1,4-dioxane profile

1,4-Dioxane is a heterocyclic organic compound with the formula (CH2CH2O)2. It is a colorless liquid with a faint, ethereal odor. 1,4-Dioxane is a common solvent used in industrial and laboratory settings. It is also found as a contaminant in some consumer products, such as cosmetics and detergents. The compound is synthesized by the acid-catalyzed dehydration of diethylene glycol. 1,4-Dioxane is a suspected human carcinogen and is also a skin and eye irritant. It is studied due to its potential health risks and its prevalence in various industrial processes. 1,4-Dioxane is also an important reagent in organic synthesis and is used as a stabilizer for certain types of polymers.'

1,4-dioxane: dehydrating agent; polar solvent miscible both with water & most organic solvents [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

dioxane : Any member of the class of dioxanes that is a cyclohexane in which two carbon atoms are replaced by oxygen atoms. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

1,4-dioxane : A dioxane with oxygen atoms at positions 1 and 4. [Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

ID Source	ID
PubMed CID	31275
CHEMBL ID	453716
CHEBI ID	47032
MeSH ID	M0084336

Synonym
BIDD:ER0341
tetrahydro-p-dioxin
dioxane-1,4
wln: t6o dotj
tetrahydro-1,4-dioxin
diokan
glycol ethylene ether
dioxanne
nsc8728
diethylene ether
dioxaan-1,4
diossano-1,4
dioxan
123-91-1
1,4-dioxane
dioxan-1,4
dioxane
dioksan
diethylene dioxide
nsc-8728
nci-c03689
di(ethylene oxide)
p-dioxan
dioxyethylene ether
1,4-dioxan
1,4-diethylene dioxide
p-dioxane
inchi=1/c4h8o2/c1-2-6-4-3-5-1/h1-4h
rcra waste no. u108
1,4-diethylenedioxide
brn 0102551
einecs 204-661-8
dioxan-1,4 [german]
p-dioxan [czech]
un 1165
dioxaan-1,4 [dutch]
dioxane, technical grade
1,4-dioxanne [french]
ccris 269
dioxanne [french]
diossano-1,4 [italian]
rcra waste number u108
un1165
dioksan [polish]
ne 220
1,4-diethyleneoxide
p-dioxin, tetrahydro-
hsdb 81
glycolethylenether
nsc 8728
ai3-01055
para-dioxane
1,4-dioxane, aldrasorb(tm), 99.8%
DB03316
CHEBI:47032 ,
1,4-dioxacyclohexane
tetrahydro-para-dioxin
1-4 dioxane
1,4-dioxane, puriss., absolute, over molecular sieve (h2o <=0.01%), >=99.5% (gc)
1,4-dioxane, histological grade, >=99%
1,4-dioxane, anhydrous, 99.8%
D0860
CHEMBL453716
AKOS000120203
NCGC00248888-01
dtxcid00533
NCGC00258524-01
cas-123-91-1
tox21_200971
dtxsid4020533 ,
[1,4]dioxane
5-19-01-00016 (beilstein handbook reference)
ec 204-661-8
unii-j8a3s10o7s
j8a3s10o7s ,
1,4-dioxanne
dioxane [un1165] [flammable liquid]
FT-0606896
FT-0606897
1,4-dioxane [usp-rs]
dioxan [mart.]
1,4-dioxane [hsdb]
dioxane [mi]
1,4-dioxane [iarc]
STL264191
BRD-K42978307-001-01-0
dioxane 1.4
1,4,-dioxane
1,4- dioxane
1,4 -dioxan
[1,4]-dioxane
1,4dioxan
1-4-dioxane
1.4-dioxane
1,4dioxane
1,-4-dioxane
1,4-di-oxane
1 ,4-dioxan
paradioxane
1,4 dioxan
1,4 dioxane
1 ,4-dioxane
1, 4-dioxane
1, 4 dioxane
1,4 -dioxane
1,4-dioxin, tetrahydro-
glycol ethylene ether 8
mfcd00006571
1,4-dioxane, hplc grade
J-523874
J-004995
p-doxane
1,4-dioxane, analytical standard
1,4-dioxane, anhydrous
1,4-dioxane, for hplc
1,4-dioxane, for hplc, >=99.5%
1,4-dioxane, puriss. p.a., dried, >=99.5% (gc), <=0.005% water
1,4-dioxane, spectrophotometric grade, >=99%
1,4-dioxane, hplc grade, 99.9%
1,4-dioxane, saj first grade
1,4-dioxane, jis special grade, >=99.0%
1,4-dioxane, puriss. p.a., acs reagent, reag. iso, reag. ph. eur., >=99.5% (gc)
residual solvent class 2 - 1,4-dioxane, united states pharmacopeia (usp) reference standard
1,4-dioxane, acs reagent, >=99.0%
1,4-dioxane, >=99.5%, for titration in non-aqueous medium
1,4-dioxane, reagentplus(r), >=99%
1,4-dioxane, anhydrous, zero2(tm), 99.8%
1,4-dioxane, p.a., 99%
1,4-dioxane, for hplc, >=99.7%
1,4-dioxane, pharmaceutical secondary standard; certified reference material
1,4-dioxane, ar, >=99.5%
1,4-dioxane, lr, >=99%
1,4-dioxane, uv hplc spectroscopic, 99.9%
1,4-dioxane 1000 microg/ml in methanol
1,4-dioxane, acs grade
BCP16201
39449-24-6
54841-74-6
1,4-dioxane 1000 microg/ml in acetonitrile
Q161532
AMY33329
28552-22-9

Excerpt	Reference	Relevance
" A LOAEL (lowest observed adverse effect level) was determined at 50 ppm for the nasal endpoint of general chronic toxicity."	( Two-year inhalation study of carcinogenicity and chronic toxicity of 1,4-dioxane in male rats. Arito, H; Fukushima, S; Ikawa, N; Kano, H; Kasai, T; Nagano, K; Nagashima, H; Nishizawa, T; Sasaki, T; Umeda, Y, 2009)	0.59

Excerpt	Reference	Relevance
" In order to determine more accurately the likely human response following lifetime exposure to dioxane, a physiologically-based pharmacokinetic (PB-PK) model was developed."	( Cancer risk assessment for dioxane based upon a physiologically-based pharmacokinetic approach. Leung, HW; Paustenbach, DJ, 1990)	0.28
"A six compartment physiologically based pharmacokinetic (PB-PK) model was developed to describe the disposition of diethylene-1,4-dioxide (dioxane) and its principal metabolite beta-hydroxyethoxyacetic acid in rats, mice, and humans."	( Development of a physiologically based pharmacokinetic model for risk assessment with 1,4-dioxane. Andersen, ME; Gargas, ML; McCroskey, PS; Park, CN; Reitz, RH, 1990)	0.5
" However, because biotransformation and excretion of many chemicals are capacity-limited processes, extrapolation of toxicity to lower doses, without adequate pharmacokinetic information at those lower dose levels may result in overestimation of predicted toxicity."	( Sources of uncertainty in pharmacokinetic prediction. Braun, WH; Waechter, JM, 1983)	0.27
" Two physiologically based pharmacokinetic (PBPK) models of 1,4-dioxane and its major metabolite, hydroxyethoxyacetic acid (HEAA), were published in 1990."	( Physiologically based pharmacokinetic modeling of 1,4-Dioxane in rats, mice, and humans. Clarkson, J; Corley, RA; Gargas, ML; Locey, BJ; Poet, TS; Sager, S; Sweeney, LM; Thrall, KD; Weber, TJ, 2008)	0.84
" The ASD/CsA was characterized in terms of morphology, particle size distribution, crystallinity, dissolution behavior, physicochemical stability, and pharmacokinetic behavior in rats."	( Amorphous solid dispersion of cyclosporine A prepared with fine droplet drying process: Physicochemical and pharmacokinetic characterization. Morinaga, T; Moritani, T; Onoue, S; Sato, H; Seto, Y; Suzuki, H, 2017)	0.46

Excerpt	Reference	Relevance
"Ozonation combined with electrolysis (ozone-electrolysis) is a new advanced oxidation process for water treatment."	( Ozonation combined with electrolysis of 1,4-dioxane using a two-compartment electrolytic flow cell with solid electrolyte. Abe, M; Asano, M; Kishimoto, N; Nakagawa, T; Ono, Y; Yamada, M, 2008)	0.61

Excerpt	Reference	Relevance
" After oral administration of CsA samples (10mg-CsA/kg) in rats, the ASD/CsA showed a high and sustained plasma concentration of CsA as evidenced by a 18-fold increase in the oral bioavailability of CsA compared with amorphous CsA."	( Amorphous solid dispersion of cyclosporine A prepared with fine droplet drying process: Physicochemical and pharmacokinetic characterization. Morinaga, T; Moritani, T; Onoue, S; Sato, H; Seto, Y; Suzuki, H, 2017)	0.46

Excerpt	Relevance	Reference
" On oral dosing (10 mg/kg) to rats and dogs, 110 showed significant TXRA activity [concentration ratio > 64 (rat, 3 h) and > 59 +/- 11."	( A novel approach to dual-acting thromboxane receptor antagonist/synthase inhibitors based on the link of 1,3-dioxane-thromboxane receptor antagonists and -thromboxane synthase inhibitors. Ackerley, N; Brewster, AG; Brown, GR; Clarke, DS; Foubister, AJ; Griffin, SJ; Hudson, JA; Smithers, MJ; Whittamore, PR, 1995)	0.29
" However, in a current series of trials with TdR, it showed equivocal responses 24 or 48 hr following treatment with 2000 mg/kg in time-course experiments, and positive responses 24 hr following 1000, 1500 and 2000 mg/kg in dose-response experiments."	( Repeat-assessment of 1,4-dioxane in a rat-hepatocyte replicative DNA synthesis (RDS) test: evidence for stimulus of hepatocyte proliferation. Miyagawa, M; Shirotori, T; Tsuchitani, M; Yoshikawa, K, 1999)	0.62
"The objective of this work is to study the interaction of a copolymer, poly methyl vinyl ether/maleic anhydride (PMV/MA) used in pharmaceutical dosage form and a phospholipid L-alpha-dimiristoyl phosphatidylcholine (DMPC) with the aim of developing a bioadhesive system."	( Interaction of poly methyl vinyl ether/maleic anhydride-dimiristoyl phosphatidylcholine: a model bioadhesion study. Ballesteros, MP; Castro, RM; Lastres, JL; Nuñez, JL, 2000)	0.31
" In contrast, dosing with pozzolan decomposed up to 98."	( Decomposition of 1,4-dioxane by advanced oxidation and biochemical process. Kim, CG; Lee, BR; Seo, HJ, 2006)	0.67
" Increases in plasma levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) and a decrease in plasma glucose were noted primarily in the rats and mice dosed 25,000 ppm."	( Thirteen-week oral toxicity of 1,4-dioxane in rats and mice. Aiso, S; Fukushima, S; Kano, H; Nagano, K; Ohbayashi, H; Saito, M; Senoh, H; Umeda, Y; Yamazaki, K, 2008)	0.63
" Because our data indicate that 1,4-dioxane is a genotoxic carcinogen, we estimated the point of departure of the mutagenicity and carcinogenicity of 1,4-dioxane using the no-observed effect-level approach and the Benchmark dose approach to characterize its dose-response relationship at low doses."	( In vivo positive mutagenicity of 1,4-dioxane and quantitative analysis of its mutagenicity and carcinogenicity in rats. Fujioka, M; Fukushima, S; Gi, M; Kakehashi, A; Masumura, K; Matsumoto, M; Nohmi, T; Okuno, T; Omori, M; Wanibuchi, H, 2018)	1.05
" For the liver micronucleus test, we performed the juvenile animal method and two methods using partial hepatectomy (PH), dosing before PH or dosing after PH."	( In vivo genotoxicity of 1,4-dioxane evaluated by liver and bone marrow micronucleus tests and Pig-a assay in rats. Hattori, C; Itoh, S, 2019)	0.82
" Adding antibiotics (sulfamethoxazole and ciprofloxacin), that temporarily inhibited the nitrification process during the dosing period, showed a minor effect in 1,4-dioxane removal (6-8% decline, p < 0."	( 1,4-Dioxane removal in nitrifying sand filters treating domestic wastewater: Influence of water matrix and microbial inhibitors. Brownawell, BJ; Clyde, PM; Lee, CS; Mao, X; Venkatesan, AK; Wang, M, 2023)	2.55

Role	Description
non-polar solvent	null
carcinogenic agent	A role played by a chemical compound which is known to induce a process of carcinogenesis by corrupting normal cellular pathways, leading to the acquistion of tumoral capabilities.
metabolite	Any intermediate or product resulting from metabolism. The term 'metabolite' subsumes the classes commonly known as primary and secondary metabolites.
NMR chemical shift reference compound	Any compound that produces a peak used to reference an NMR spectrum during data pre-processing.
[role information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Class	Description
dioxane	Any member of the class of dioxanes that is a cyclohexane in which two carbon atoms are replaced by oxygen atoms.
volatile organic compound	Any organic compound having an initial boiling point less than or equal to 250 degreeC (482 degreeF) measured at a standard atmospheric pressure of 101.3 kPa.
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Pathway	Proteins	Compounds
mixed acid fermentation	32	76

Protein	Taxonomy	Measurement	Average (µ)	Min (ref.)	Avg (ref.)	Max (ref.)	Bioassay(s)
retinoic acid nuclear receptor alpha variant 1	Homo sapiens (human)	Potency	35.7358	0.0030	41.6115	22,387.1992	AID1159552; AID1159555
[prepared from compound, protein, and bioassay information from National Library of Medicine (NLM), extracted Dec-2023]

Assay ID	Title	Year	Journal	Article
AID343683	Octanol-water partition coefficient, log P of the compound	2008	Journal of medicinal chemistry, Jul-10, Volume: 51, Issue:13	Toward prediction of alkane/water partition coefficients.
AID433903	Hepatotoxicity in mouse assessed as carcinogenic potency	2009	European journal of medicinal chemistry, Sep, Volume: 44, Issue:9	Development of QSAR models for predicting hepatocarcinogenic toxicity of chemicals.
AID343684	Alkane-water partition coefficient, log P of the compound	2008	Journal of medicinal chemistry, Jul-10, Volume: 51, Issue:13	Toward prediction of alkane/water partition coefficients.
[information is prepared from bioassay data collected from National Library of Medicine (NLM), extracted Dec-2023]

Timeframe	Studies, This Drug (%)	All Drugs %
pre-1990	57 (8.60)	18.7374
1990's	78 (11.76)	18.2507
2000's	195 (29.41)	29.6817
2010's	253 (38.16)	24.3611
2020's	80 (12.07)	2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Publication Type	This drug (%)	All Drugs (%)
Trials	2 (0.29%)	5.53%
Reviews	18 (2.59%)	6.00%
Case Studies	2 (0.29%)	4.05%
Observational	0 (0.00%)	0.25%
Other	673 (96.83%)	84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Substance	Relationship Strength	Studies	Trials	Classes	Roles
ethylene dichloride ethylene dichloride: RN given refers to 1,2-isomer; structure given in first source. 1,2-dichloroethane : A member of the class of chloroethanes substituted by two chloro groups at positions 1 and 2.	2.1	1	0	chloroethanes	hepatotoxic agent; mutagen; non-polar solvent
2,3-dihydroxybenzoic acid 2,3-dihydroxybenzoic acid: RN given refers to parent cpd. dihydroxybenzoic acid : Any member of the class of hydroxybenzoic acids carrying two phenolic hydroxy groups on the benzene ring and its derivatives.. 2,3-dihydroxybenzoic acid : A dihydroxybenzoic acid that is benzoic acid substituted by hydroxy groups at positions 2 and 3. It occurs naturally in Phyllanthus acidus and in the aquatic fern Salvinia molesta.	1.99	1	0	dihydroxybenzoic acid	human xenobiotic metabolite; plant metabolite
ethylene chlorohydrin Ethylene Chlorohydrin: Used as a solvent, in the manufacture of insecticides, and for treating sweet potatoes before planting. May cause nausea, vomiting, pains in head and chest, stupefaction. Irritates mucous membranes and causes kidney and liver degeneration.. chloroethanol : An organochlorine compound that is ethanol substituted by at least one chloro group.	1.93	1	0	chloroethanol	xenobiotic metabolite
3-phenylpropionic acid 3-phenylpropionic acid: RN given refers to parent cpd. 3-phenylpropionic acid : A monocarboxylic acid that is propionic acid substituted at position 3 by a phenyl group.	2	1	0	benzenes; monocarboxylic acid	antifungal agent; human metabolite; plant metabolite
4-hydroxybenzoic acid 4-hydroxybenzoic acid : A monohydroxybenzoic acid that is benzoic acid carrying a hydroxy substituent at C-4 of the benzene ring.	1.96	1	0	monohydroxybenzoic acid	algal metabolite; plant metabolite
ethylene glycol Ethylene Glycol: A colorless, odorless, viscous dihydroxy alcohol. It has a sweet taste, but is poisonous if ingested. Ethylene glycol is the most important glycol commercially available and is manufactured on a large scale in the United States. It is used as an antifreeze and coolant, in hydraulic fluids, and in the manufacture of low-freezing dynamites and resins.. ethanediol : Any diol that is ethane or substituted ethane carrying two hydroxy groups.. ethylene glycol : A 1,2-glycol compound produced via reaction of ethylene oxide with water.	8.26	6	0	ethanediol; glycol	metabolite; mouse metabolite; solvent; toxin
acetic acid Acetic Acid: Product of the oxidation of ethanol and of the destructive distillation of wood. It is used locally, occasionally internally, as a counterirritant and also as a reagent. (Stedman, 26th ed). acetic acid : A simple monocarboxylic acid containing two carbons.	3.26	6	0	monocarboxylic acid	antimicrobial food preservative; Daphnia magna metabolite; food acidity regulator; protic solvent
acetone methyl ketone : A ketone of formula RC(=O)CH3 (R =/= H).	3.95	13	0	ketone body; methyl ketone; propanones; volatile organic compound	EC 3.5.1.4 (amidase) inhibitor; human metabolite; polar aprotic solvent
adenine [no description available]	2.05	1	0	6-aminopurines; purine nucleobase	Daphnia magna metabolite; Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
ammonium hydroxide azane : Saturated acyclic nitrogen hydrides having the general formula NnHn+2.	2.42	2	0	azane; gas molecular entity; mononuclear parent hydride	EC 3.5.1.4 (amidase) inhibitor; metabolite; mouse metabolite; neurotoxin; NMR chemical shift reference compound; nucleophilic reagent; refrigerant
benzene [no description available]	4.02	14	0	aromatic annulene; benzenes; volatile organic compound	carcinogenic agent; environmental contaminant; non-polar solvent
benzoic acid Benzoic Acid: A fungistatic compound that is widely used as a food preservative. It is conjugated to GLYCINE in the liver and excreted as hippuric acid.. benzoic acid : A compound comprising a benzene ring core carrying a carboxylic acid substituent.. aromatic carboxylic acid : Any carboxylic acid in which the carboxy group is directly bonded to an aromatic ring.	1.96	1	0	benzoic acids	algal metabolite; antimicrobial food preservative; drug allergen; EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor; EC 3.1.1.3 (triacylglycerol lipase) inhibitor; human xenobiotic metabolite; plant metabolite
benzyl alcohol Benzyl Alcohol: A colorless liquid with a sharp burning taste and slight odor. It is used as a local anesthetic and to reduce pain associated with LIDOCAINE injection. Also, it is used in the manufacture of other benzyl compounds, as a pharmaceutic aid, and in perfumery and flavoring.. hydroxytoluene : Any member of the class of toluenes carrying one or more hydroxy substituents.. benzyl alcohol : An aromatic alcohol that consists of benzene bearing a single hydroxymethyl substituent.. aromatic alcohol : Any alcohol in which the alcoholic hydroxy group is attached to a carbon which is itself bonded to an aromatic ring.. aromatic primary alcohol : Any primary alcohol in which the alcoholic hydroxy group is attached to a carbon which is itself bonded to an aromatic ring.	2.42	2	0	benzyl alcohols	antioxidant; fragrance; metabolite; solvent
betaine glycine betaine : The amino acid betaine derived from glycine.	1.97	1	0	amino-acid betaine; glycine derivative	fundamental metabolite
bromide Bromides: Salts of hydrobromic acid, HBr, with the bromine atom in the 1- oxidation state. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	2.05	1	0	halide anion; monoatomic bromine
1-butanol 1-Butanol: A four carbon linear hydrocarbon that has a hydroxy group at position 1.. butan-1-ol : A primary alcohol that is butane in which a hydrogen of one of the methyl groups is substituted by a hydroxy group. It it produced in small amounts in humans by the gut microbes.	7.98	4	0	alkyl alcohol; primary alcohol; short-chain primary fatty alcohol	human metabolite; mouse metabolite; protic solvent
butyric acid Butyric Acid: A four carbon acid, CH3CH2CH2COOH, with an unpleasant odor that occurs in butter and animal fat as the glycerol ester.. butyrate : A short-chain fatty acid anion that is the conjugate base of butyric acid, obtained by deprotonation of the carboxy group.. butyric acid : A straight-chain saturated fatty acid that is butane in which one of the terminal methyl groups has been oxidised to a carboxy group.	2.05	1	0	fatty acid 4:0; straight-chain saturated fatty acid	human urinary metabolite; Mycoplasma genitalium metabolite
carbamates [no description available]	2.03	1	0	amino-acid anion
formic acid formic acid: RN given refers to parent cpd. formic acid : The simplest carboxylic acid, containing a single carbon. Occurs naturally in various sources including the venom of bee and ant stings, and is a useful organic synthetic reagent. Principally used as a preservative and antibacterial agent in livestock feed. Induces severe metabolic acidosis and ocular injury in human subjects.	7.21	1	0	monocarboxylic acid	antibacterial agent; astringent; metabolite; protic solvent; solvent
carnitine [no description available]	1.97	1	0	amino-acid betaine	human metabolite; mouse metabolite
catechol [no description available]	2.06	1	0	catechols	allelochemical; genotoxin; plant metabolite
methane Methane: The simplest saturated hydrocarbon. It is a colorless, flammable gas, slightly soluble in water. It is one of the chief constituents of natural gas and is formed in the decomposition of organic matter. (Grant & Hackh's Chemical Dictionary, 5th ed). methane : A one-carbon compound in which the carbon is attached by single bonds to four hydrogen atoms. It is a colourless, odourless, non-toxic but flammable gas (b.p. -161degreeC).	7.95	4	0	alkane; gas molecular entity; mononuclear parent hydride; one-carbon compound	bacterial metabolite; fossil fuel; greenhouse gas
chlordecone [no description available]	2.05	1	0	cyclic ketone; organochlorine compound	insecticide; persistent organic pollutant
chlorine chloride : A halide anion formed when chlorine picks up an electron to form an an anion.	2.69	3	0	halide anion; monoatomic chlorine	cofactor; Escherichia coli metabolite; human metabolite
hydrochloric acid Hydrochloric Acid: A strong corrosive acid that is commonly used as a laboratory reagent. It is formed by dissolving hydrogen chloride in water. GASTRIC ACID is the hydrochloric acid component of GASTRIC JUICE.. hydrogen chloride : A mononuclear parent hydride consisting of covalently bonded hydrogen and chlorine atoms.	2.95	4	0	chlorine molecular entity; gas molecular entity; hydrogen halide; mononuclear parent hydride	mouse metabolite
coumarin 2H-chromen-2-one: coumarin derivative	2.42	2	0	coumarins	fluorescent dye; human metabolite; plant metabolite
2-cresol 2-cresol: RN given refers to parent cpd. o-cresol : A cresol that is phenol substituted by a methyl group at position 2. It is a minor urinary metabolite of toluene.	2.06	1	0	cresol	human xenobiotic metabolite
salicylic acid Scalp: The outer covering of the calvaria. It is composed of several layers: SKIN; subcutaneous connective tissue; the occipitofrontal muscle which includes the tendinous galea aponeurotica; loose connective tissue; and the pericranium (the PERIOSTEUM of the SKULL).	7.44	2	0	monohydroxybenzoic acid	algal metabolite; antifungal agent; antiinfective agent; EC 1.11.1.11 (L-ascorbate peroxidase) inhibitor; keratolytic drug; plant hormone; plant metabolite
3-cresol 3-cresol: RN given refers to parent cpd. m-cresol : A cresol with the methyl substituent at position 3. It is a minor urinary metabolite of toluene.	2.06	1	0	cresol	human xenobiotic metabolite
gallic acid gallate : A trihydroxybenzoate that is the conjugate base of gallic acid.	2.25	1	0	trihydroxybenzoic acid	antineoplastic agent; antioxidant; apoptosis inducer; astringent; cyclooxygenase 2 inhibitor; EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor; geroprotector; human xenobiotic metabolite; plant metabolite
octanoic acid octanoic acid: RN given refers to parent cpd; structure in Merck Index, 9th ed, #1764. octanoic acid : A straight-chain saturated fatty acid that is heptane in which one of the hydrogens of a terminal methyl group has been replaced by a carboxy group. Octanoic acid is also known as caprylic acid.	2.05	1	0	medium-chain fatty acid; straight-chain saturated fatty acid	antibacterial agent; Escherichia coli metabolite; human metabolite
propionaldehyde propionaldehyde: may cause respiratory irritation; RN given refers to parent cpd; structure. propanal : An aldehyde that consists of ethane bearing a formyl substituent. The parent of the class of propanals.	2.17	1	0	alpha-CH2-containing aldehyde; propanals	Escherichia coli metabolite
3,4-dihydroxyphenylacetic acid 3,4-Dihydroxyphenylacetic Acid: A deaminated metabolite of LEVODOPA.. (3,4-dihydroxyphenyl)acetic acid : A dihydroxyphenylacetic acid having the two hydroxy substituents located at the 3- and 4-positions. It is a metabolite of dopamine.. dihydroxyphenylacetic acid : A dihydroxy monocarboxylic acid consisting of phenylacetic acid having two phenolic hydroxy substituents.	1.99	1	0	catechols; dihydroxyphenylacetic acid	human metabolite
lactic acid Lactic Acid: A normal intermediate in the fermentation (oxidation, metabolism) of sugar. The concentrated form is used internally to prevent gastrointestinal fermentation. (From Stedman, 26th ed). 2-hydroxypropanoic acid : A 2-hydroxy monocarboxylic acid that is propanoic acid in which one of the alpha-hydrogens is replaced by a hydroxy group.	3.66	9	0	2-hydroxy monocarboxylic acid	algal metabolite; Daphnia magna metabolite
dihydroxyacetone phosphate Dihydroxyacetone Phosphate: An important intermediate in lipid biosynthesis and in glycolysis.. dihydroxyacetone phosphate : A member of the class of glycerone phosphates that consists of glycerone bearing a single phospho substituent.	2.05	1	0	glycerone phosphates; primary alpha-hydroxy ketone	Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
dihydroxyacetone [no description available]	2.05	1	0	ketotriose; primary alpha-hydroxy ketone	antifungal agent; Escherichia coli metabolite; human metabolite; metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
dimethyl sulfoxide Dimethyl Sulfoxide: A highly polar organic liquid, that is used widely as a chemical solvent. Because of its ability to penetrate biological membranes, it is used as a vehicle for topical application of pharmaceuticals. It is also used to protect tissue during CRYOPRESERVATION. Dimethyl sulfoxide shows a range of pharmacological activity including analgesia and anti-inflammation.. dimethyl sulfoxide : A 2-carbon sulfoxide in which the sulfur atom has two methyl substituents.	9.33	19	0	sulfoxide; volatile organic compound	alkylating agent; antidote; Escherichia coli metabolite; geroprotector; MRI contrast agent; non-narcotic analgesic; polar aprotic solvent; radical scavenger
formaldehyde paraform: polymerized formaldehyde; RN given refers to parent cpd; used in root canal therapy	2.77	3	0	aldehyde; one-carbon compound	allergen; carcinogenic agent; disinfectant; EC 3.5.1.4 (amidase) inhibitor; environmental contaminant; Escherichia coli metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
glycine [no description available]	3.25	6	0	alpha-amino acid; amino acid zwitterion; proteinogenic amino acid; serine family amino acid	EC 2.1.2.1 (glycine hydroxymethyltransferase) inhibitor; fundamental metabolite; hepatoprotective agent; micronutrient; neurotransmitter; NMDA receptor agonist; nutraceutical
glycerol Moon: The natural satellite of the planet Earth. It includes the lunar cycles or phases, the lunar month, lunar landscapes, geography, and soil.	3.38	7	0	alditol; triol	algal metabolite; detergent; Escherichia coli metabolite; geroprotector; human metabolite; mouse metabolite; osmolyte; Saccharomyces cerevisiae metabolite; solvent
glycolic acid glycolic acid: RN given refers to parent cpd. glycolic acid : A 2-hydroxy monocarboxylic acid that is acetic acid where the methyl group has been hydroxylated.	2.17	1	0	2-hydroxy monocarboxylic acid; primary alcohol	keratolytic drug; metabolite
glyoxylic acid glyoxylic acid: RN given refers to parent cpd. glyoxylic acid : A 2-oxo monocarboxylic acid that is acetic acid bearing an oxo group at the alpha carbon atom.	2.07	1	0	2-oxo monocarboxylic acid; aldehydic acid	Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
hydrogen carbonate Bicarbonates: Inorganic salts that contain the -HCO3 radical. They are an important factor in determining the pH of the blood and the concentration of bicarbonate ions is regulated by the kidney. Levels in the blood are an index of the alkali reserve or buffering capacity.. hydrogencarbonate : The carbon oxoanion resulting from the removal of a proton from carbonic acid.	2.1	1	0	carbon oxoanion	cofactor; Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
hydrogen Hydrogen: The first chemical element in the periodic table with atomic symbol H, and atomic number 1. Protium (atomic weight 1) is by far the most common hydrogen isotope. Hydrogen also exists as the stable isotope DEUTERIUM (atomic weight 2) and the radioactive isotope TRITIUM (atomic weight 3). Hydrogen forms into a diatomic molecule at room temperature and appears as a highly flammable colorless and odorless gas.. dihydrogen : An elemental molecule consisting of two hydrogens joined by a single bond.	8.43	7	0	elemental hydrogen; elemental molecule; gas molecular entity	antioxidant; electron donor; food packaging gas; fuel; human metabolite
hydroxylamine amino alcohol : An alcohol containing an amino functional group in addition to the alcohol-defining hydroxy group.	2.04	1	0	hydroxylamines	algal metabolite; bacterial xenobiotic metabolite; EC 1.1.3.13 (alcohol oxidase) inhibitor; EC 4.2.1.22 (cystathionine beta-synthase) inhibitor; EC 4.3.1.10 (serine-sulfate ammonia-lyase) inhibitor; nitric oxide donor; nucleophilic reagent
indole [no description available]	2.47	2	0	indole; polycyclic heteroarene	Escherichia coli metabolite
malonic acid malonic acid : An alpha,omega-dicarboxylic acid in which the two carboxy groups are separated by a single methylene group.. dicarboxylic acid : Any carboxylic acid containing two carboxy groups.	2.03	1	0	alpha,omega-dicarboxylic acid	human metabolite
methanol Methanol: A colorless, flammable liquid used in the manufacture of FORMALDEHYDE and ACETIC ACID, in chemical synthesis, antifreeze, and as a solvent. Ingestion of methanol is toxic and may cause blindness.. primary alcohol : A primary alcohol is a compound in which a hydroxy group, -OH, is attached to a saturated carbon atom which has either three hydrogen atoms attached to it or only one other carbon atom and two hydrogen atoms attached to it.. methanol : The primary alcohol that is the simplest aliphatic alcohol, comprising a methyl and an alcohol group.	4.79	31	0	alkyl alcohol; one-carbon compound; primary alcohol; volatile organic compound	amphiprotic solvent; Escherichia coli metabolite; fuel; human metabolite; mouse metabolite; Mycoplasma genitalium metabolite
inositol Inositol: An isomer of glucose that has traditionally been considered to be a B vitamin although it has an uncertain status as a vitamin and a deficiency syndrome has not been identified in man. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1379) Inositol phospholipids are important in signal transduction.. inositol : Any cyclohexane-1,2,3,4,5,6-hexol.. 1D-chiro-inositol : Belonging to the inositol family of compounds, D-chiro-inositol (DCI) is an isomer of glucose. It is an important secondary messenger in insulin signal transduction.. muco-inositol : An inositol that is cyclohexane-1,2,3,4,5,6-hexol having a (1R,2R,3r,4R,5S,6r)-configuration.	1.97	1	0	cyclitol; hexol
naphthalene [no description available]	2.37	2	0	naphthalenes; ortho-fused bicyclic arene	apoptosis inhibitor; carcinogenic agent; environmental contaminant; mouse metabolite; plant metabolite; volatile oil component
nickel Nickel: A trace element with the atomic symbol Ni, atomic number 28, and atomic weight 58.69. It is a cofactor of the enzyme UREASE.. nickel ion : A nickel atom having a net electric charge.. nickel atom : Chemical element (nickel group element atom) with atomic number 28.	7.94	4	0	metal allergen; nickel group element atom	epitope; micronutrient
niacinamide nicotinamide : A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group.	2.69	3	0	pyridine alkaloid; pyridinecarboxamide; vitamin B3	anti-inflammatory agent; antioxidant; cofactor; EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor; EC 3.5.1.98 (histone deacetylase) inhibitor; Escherichia coli metabolite; geroprotector; human urinary metabolite; metabolite; mouse metabolite; neuroprotective agent; Saccharomyces cerevisiae metabolite; Sir2 inhibitor
niacin Niacin: A water-soluble vitamin of the B complex occurring in various animal and plant tissues. It is required by the body for the formation of coenzymes NAD and NADP. It has PELLAGRA-curative, vasodilating, and antilipemic properties.. vitamin B3 : Any member of a group of vitamers that belong to the chemical structural class called pyridines that exhibit biological activity against vitamin B3 deficiency. Vitamin B3 deficiency causes a condition known as pellagra whose symptoms include depression, dermatitis and diarrhea. The vitamers include nicotinic acid and nicotinamide (and their ionized and salt forms).. nicotinic acid : A pyridinemonocarboxylic acid that is pyridine in which the hydrogen at position 3 is replaced by a carboxy group.	1.94	1	0	pyridine alkaloid; pyridinemonocarboxylic acid; vitamin B3	antidote; antilipemic drug; EC 3.5.1.19 (nicotinamidase) inhibitor; Escherichia coli metabolite; human urinary metabolite; metabolite; mouse metabolite; plant metabolite; vasodilator agent
nitrates Nitrates: Inorganic or organic salts and esters of nitric acid. These compounds contain the NO3- radical.	3.01	4	0	monovalent inorganic anion; nitrogen oxoanion; reactive nitrogen species
nitroxyl nitroxyl: hydroxamic acid oxidized to nitroxyl free radical. nitroxyl : A nitrogen oxoacid consisting of an oxygen atom double-bonded to an NH group.	2.07	1	0	nitrogen oxoacid
pentachlorophenol PENTA: structure given in first source	3.06	1	0	aromatic fungicide; chlorophenol; organochlorine pesticide; pentachlorobenzenes	human xenobiotic metabolite
phenol [no description available]	2.72	3	0	phenols	antiseptic drug; disinfectant; human xenobiotic metabolite; mouse metabolite
phenethylamine phenethylamine: RN given refers to parent cpd; structure in Merck Index, 9th ed, #7016. 2-phenylethylamine : A phenylethylamine having the phenyl substituent at the 2-position.	1.94	1	0	alkaloid; aralkylamine; phenylethylamine	Escherichia coli metabolite; human metabolite; mouse metabolite
porphobilinogen [no description available]	2.11	1	0	aralkylamino compound; dicarboxylic acid; pyrroles	Escherichia coli metabolite; metabolite; mouse metabolite
propylene glycol Propylene Glycol: A clear, colorless, viscous organic solvent and diluent used in pharmaceutical preparations.. propane-1,2-diol : The simplest member of the class of propane-1,2-diols, consisting of propane in which a hydrogen at position 1 and a hydrogen at position 2 are substituted by hydroxy groups. A colourless, viscous, hygroscopic, low-melting (-59degreeC) and high-boiling (188degreeC) liquid with low toxicity, it is used as a solvent, emulsifying agent, and antifreeze.	2.03	1	0	glycol; propane-1,2-diols	allergen; human xenobiotic metabolite; mouse metabolite; protic solvent
1-propanol 1-Propanol: A colorless liquid made by oxidation of aliphatic hydrocarbons that is used as a solvent and chemical intermediate.. propan-1-ol : The parent member of the class of propan-1-ols that is propane in which a hydrogen of one of the methyl groups is replaced by a hydroxy group.	3.25	6	0	propan-1-ols; short-chain primary fatty alcohol	metabolite; protic solvent
pyridine azine : An organonitrogen compound of general structure RCH=N-N=CHR or RR'C=N-N=CRR'.	3.14	5	0	azaarene; mancude organic heteromonocyclic parent; monocyclic heteroarene; pyridines	environmental contaminant; NMR chemical shift reference compound
pyridoxal phosphate Pyridoxal Phosphate: This is the active form of VITAMIN B 6 serving as a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. During transamination of amino acids, pyridoxal phosphate is transiently converted into pyridoxamine phosphate (PYRIDOXAMINE).. pyridoxal 5'-phosphate : The monophosphate ester obtained by condensation of phosphoric acid with the primary hydroxy group of pyridoxal.	1.98	1	0	methylpyridines; monohydroxypyridine; pyridinecarbaldehyde; vitamin B6 phosphate	coenzyme; cofactor; EC 2.7.7.7 (DNA-directed DNA polymerase) inhibitor; Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
pyruvic acid Pyruvic Acid: An intermediate compound in the metabolism of carbohydrates, proteins, and fats. In thiamine deficiency, its oxidation is retarded and it accumulates in the tissues, especially in nervous structures. (From Stedman, 26th ed). pyruvic acid : A 2-oxo monocarboxylic acid that is the 2-keto derivative of propionic acid. It is a metabolite obtained during glycolysis.	2.52	2	0	2-oxo monocarboxylic acid	cofactor; fundamental metabolite
selenic acid Selenic Acid: A strong dibasic acid with the molecular formula H2SeO4. Included under this heading is the acid form, and inorganic salts of dihydrogen selenium tetraoxide.	7.1	1	0	selenium oxoacid
succinic acid Succinic Acid: A water-soluble, colorless crystal with an acid taste that is used as a chemical intermediate, in medicine, the manufacture of lacquers, and to make perfume esters. It is also used in foods as a sequestrant, buffer, and a neutralizing agent. (Hawley's Condensed Chemical Dictionary, 12th ed, p1099; McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1851). succinic acid : An alpha,omega-dicarboxylic acid resulting from the formal oxidation of each of the terminal methyl groups of butane to the corresponding carboxy group. It is an intermediate metabolite in the citric acid cycle.	2.02	1	0	alpha,omega-dicarboxylic acid; C4-dicarboxylic acid	anti-ulcer drug; fundamental metabolite; micronutrient; nutraceutical; radiation protective agent
sulfur dioxide Sulfur Dioxide: A highly toxic, colorless, nonflammable gas. It is used as a pharmaceutical aid and antioxidant. It is also an environmental air pollutant.	2.1	1	0	sulfur oxide	Escherichia coli metabolite; food bleaching agent; refrigerant
thymine [no description available]	2.03	1	0	pyrimidine nucleobase; pyrimidone	Escherichia coli metabolite; human metabolite; mouse metabolite
toluene methylbenzene : Any alkylbenzene that is benzene substituted with one or more methyl groups.	3.54	8	0	methylbenzene; toluenes; volatile organic compound	cholinergic antagonist; fuel additive; neurotoxin; non-polar solvent
uracil 2,4-dihydroxypyrimidine: a urinary biomarker for bipolar disorder	2.04	1	0	pyrimidine nucleobase; pyrimidone	allergen; Daphnia magna metabolite; Escherichia coli metabolite; human metabolite; mouse metabolite; prodrug; Saccharomyces cerevisiae metabolite
urea pseudourea: clinical use; structure. isourea : A carboximidic acid that is the imidic acid tautomer of urea, H2NC(=NH)OH, and its hydrocarbyl derivatives.	2.94	4	0	isourea; monocarboxylic acid amide; one-carbon compound	Daphnia magna metabolite; Escherichia coli metabolite; fertilizer; flour treatment agent; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
3-(2-carboxypiperazin-4-yl)propyl-1-phosphonic acid 3-(2-carboxypiperazin-4-yl)propyl-1-phosphonic acid: structure given in first source; NMDA receptor antagonist	1.96	1	0
mandelic acid SAMMA: mandelic acid condensation polymer	2.17	1	0	2-hydroxy monocarboxylic acid; benzenes	antibacterial agent; human xenobiotic metabolite
1-anilino-8-naphthalenesulfonate 1-anilino-8-naphthalenesulfonate: RN given refers to parent cpd. 8-anilinonaphthalene-1-sulfonic acid : A naphthalenesulfonic acid that is naphthalene-1-sulfonic acid substituted by a phenylamino group at position 8.	3.16	5	0	aminonaphthalene; naphthalenesulfonic acid	fluorescent probe
phenytoin [no description available]	2.05	1	0	imidazolidine-2,4-dione	anticonvulsant; drug allergen; sodium channel blocker; teratogenic agent
oxyquinoline Oxyquinoline: An antiseptic with mild fungistatic, bacteriostatic, anthelmintic, and amebicidal action. It is also used as a reagent and metal chelator, as a carrier for radio-indium for diagnostic purposes, and its halogenated derivatives are used in addition as topical anti-infective agents and oral antiamebics.. quinolin-8-ol : A monohydroxyquinoline that is quinoline substituted by a hydroxy group at position 8. Its fungicidal properties are used for the control of grey mould on vines and tomatoes.	2.17	1	0	monohydroxyquinoline	antibacterial agent; antifungal agrochemical; antiseptic drug; iron chelator
acetaminophen Acetaminophen: Analgesic antipyretic derivative of acetanilide. It has weak anti-inflammatory properties and is used as a common analgesic, but may cause liver, blood cell, and kidney damage.. paracetamol : A member of the class of phenols that is 4-aminophenol in which one of the hydrogens attached to the amino group has been replaced by an acetyl group.	2.41	2	0	acetamides; phenols	antipyretic; cyclooxygenase 1 inhibitor; cyclooxygenase 2 inhibitor; cyclooxygenase 3 inhibitor; environmental contaminant; ferroptosis inducer; geroprotector; hepatotoxic agent; human blood serum metabolite; non-narcotic analgesic; non-steroidal anti-inflammatory drug; xenobiotic
albuterol Albuterol: A short-acting beta-2 adrenergic agonist that is primarily used as a bronchodilator agent to treat ASTHMA. Albuterol is prepared as a racemic mixture of R(-) and S(+) stereoisomers. The stereospecific preparation of R(-) isomer of albuterol is referred to as levalbuterol.. albuterol : A member of the class of phenylethanolamines that is 4-(2-amino-1-hydroxyethyl)-2-(hydroxymethyl)phenol having a tert-butyl group attached to the nirogen atom. It acts as a beta-adrenergic agonist used in the treatment of asthma and chronic obstructive pulmonary disease (COPD).	3.1	1	0	phenols; phenylethanolamines; secondary amino compound	beta-adrenergic agonist; bronchodilator agent; environmental contaminant; xenobiotic
amitriptyline Amitriptyline: Tricyclic antidepressant with anticholinergic and sedative properties. It appears to prevent the re-uptake of norepinephrine and serotonin at nerve terminals, thus potentiating the action of these neurotransmitters. Amitriptyline also appears to antagonize cholinergic and alpha-1 adrenergic responses to bioactive amines.. amitriptyline : An organic tricyclic compound that is 10,11-dihydro-5H-dibenzo[a,d][7]annulene substituted by a 3-(dimethylamino)propylidene group at position 5.	2.04	1	0	carbotricyclic compound; tertiary amine	adrenergic uptake inhibitor; antidepressant; environmental contaminant; tropomyosin-related kinase B receptor agonist; xenobiotic
antipyrine Antipyrine: An analgesic and antipyretic that has been given by mouth and as ear drops. Antipyrine is often used in testing the effects of other drugs or diseases on drug-metabolizing enzymes in the liver. (From Martindale, The Extra Pharmacopoeia, 30th ed, p29). antipyrine : A pyrazolone derivative that is 1,2-dihydropyrazol-3-one substituted with methyl groups at N-1 and C-5 and with a phenyl group at N-2.	2.1	1	0	pyrazolone	antipyretic; cyclooxygenase 3 inhibitor; environmental contaminant; non-narcotic analgesic; non-steroidal anti-inflammatory drug; xenobiotic
aspirin Aspirin: The prototypical analgesic used in the treatment of mild to moderate pain. It has anti-inflammatory and antipyretic properties and acts as an inhibitor of cyclooxygenase which results in the inhibition of the biosynthesis of prostaglandins. Aspirin also inhibits platelet aggregation and is used in the prevention of arterial and venous thrombosis. (From Martindale, The Extra Pharmacopoeia, 30th ed, p5). acetylsalicylate : A benzoate that is the conjugate base of acetylsalicylic acid, arising from deprotonation of the carboxy group.. acetylsalicylic acid : A member of the class of benzoic acids that is salicylic acid in which the hydrogen that is attached to the phenolic hydroxy group has been replaced by an acetoxy group. A non-steroidal anti-inflammatory drug with cyclooxygenase inhibitor activity.	1.93	1	0	benzoic acids; phenyl acetates; salicylates	anticoagulant; antipyretic; cyclooxygenase 1 inhibitor; cyclooxygenase 2 inhibitor; drug allergen; EC 1.1.1.188 (prostaglandin-F synthase) inhibitor; geroprotector; non-narcotic analgesic; non-steroidal anti-inflammatory drug; plant activator; platelet aggregation inhibitor; prostaglandin antagonist; teratogenic agent
benzocaine Benzocaine: A surface anesthetic that acts by preventing transmission of impulses along NERVE FIBERS and at NERVE ENDINGS.. dextran sulfate sodium : An organic sodium salt of dextran sulfate. It induces colitis in mice.. benzocaine : A benzoate ester having 4-aminobenzoic acid as the acid component and ethanol as the alcohol component. A surface anaesthetic, it is used to suppress the gag reflex, and as a lubricant and topical anaesthetic on the larynx, mouth, nasal cavity, respiratory tract, oesophagus, rectum, urinary tract, and vagina.	7.02	1	0	benzoate ester; substituted aniline	allergen; antipruritic drug; sensitiser; topical anaesthetic
bupivacaine Bupivacaine: A widely used local anesthetic agent.. 1-butyl-N-(2,6-dimethylphenyl)piperidine-2-carboxamide : A piperidinecarboxamide obtained by formal condensation of the carboxy group of N-butylpipecolic acid with the amino group of 2,6-dimethylaniline.. bupivacaine : A racemate composed of equimolar amounts of dextrobupivacaine and levobupivacaine. Used (in the form of its hydrochloride hydrate) as a local anaesthetic.	2.01	1	0	aromatic amide; piperidinecarboxamide; tertiary amino compound
caffeine [no description available]	2	1	0	purine alkaloid; trimethylxanthine	adenosine A2A receptor antagonist; adenosine receptor antagonist; adjuvant; central nervous system stimulant; diuretic; EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; environmental contaminant; food additive; fungal metabolite; geroprotector; human blood serum metabolite; mouse metabolite; mutagen; plant metabolite; psychotropic drug; ryanodine receptor agonist; xenobiotic
cetyltrimethylammonium ion Cetrimonium: Cetyltrimethylammonium compound whose salts and derivatives are used primarily as topical antiseptics.. cetyltrimethylammonium ion : A quaternary ammonium ion in which the substituents on nitrogen are one hexadecyl and three methyl groups.	2.73	3	0	quaternary ammonium ion
cetylpyridinium Cetylpyridinium: Cationic bactericidal surfactant used as a topical antiseptic for skin, wounds, mucous membranes, instruments, etc.; and also as a component in mouthwash and lozenges.	2.04	1	0	pyridinium ion
ciprofloxacin Ciprofloxacin: A broad-spectrum antimicrobial carboxyfluoroquinoline.. ciprofloxacin : A quinolone that is quinolin-4(1H)-one bearing cyclopropyl, carboxylic acid, fluoro and piperazin-1-yl substituents at positions 1, 3, 6 and 7, respectively.	2.1	1	0	aminoquinoline; cyclopropanes; fluoroquinolone antibiotic; N-arylpiperazine; quinolinemonocarboxylic acid; quinolone antibiotic; quinolone; zwitterion	antibacterial drug; antiinfective agent; antimicrobial agent; DNA synthesis inhibitor; EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor; environmental contaminant; topoisomerase IV inhibitor; xenobiotic
clonazepam Clonazepam: An anticonvulsant used for several types of seizures, including myotonic or atonic seizures, photosensitive epilepsy, and absence seizures, although tolerance may develop. It is seldom effective in generalized tonic-clonic or partial seizures. The mechanism of action appears to involve the enhancement of GAMMA-AMINOBUTYRIC ACID receptor responses.. clonazepam : 1,3-Dihydro-2H-1,4-benzodiazepin-2-one in which the hydrogens at positions 5 and 7 are substituted by 2-chlorophenyl and nitro groups, respectively. It is used in the treatment of all types of epilepsy and seizures, as well as myoclonus and associated abnormal movements, and panic disorders. However, its use can be limited by the development of tolerance and by sedation.	3.42	1	1	1,4-benzodiazepinone; monochlorobenzenes	anticonvulsant; anxiolytic drug; GABA modulator
conduritol epoxide conduritol epoxide: conduritol C epoxide refers to the (epi & neo)-isomers; structure. conduritol epoxide : An epoxide resulting from the epoxidation of the double bond of a conduritol.	1.97	1	0	cyclitol; epoxide; tetrol
4-cresol 4-cresol: RN given refers to parent cpd. p-cresol : A cresol that consists of toluene substituted by a hydroxy group at position 4. It is a metabolite of aromatic amino acid metabolism produced by intestinal microflora in humans and animals.	2.06	1	0	cresol	Escherichia coli metabolite; human metabolite; uremic toxin
deferoxamine Deferoxamine: Natural product isolated from Streptomyces pilosus. It forms iron complexes and is used as a chelating agent, particularly in the mesylate form.. desferrioxamine B : An acyclic desferrioxamine that is butanedioic acid in which one of the carboxy groups undergoes formal condensation with the primary amino group of N-(5-aminopentyl)-N-hydroxyacetamide and the second carboxy group undergoes formal condensation with the hydroxyamino group of N(1)-(5-aminopentyl)-N(1)-hydroxy-N(4)-[5-(hydroxyamino)pentyl]butanediamide. It is a siderophore native to Streptomyces pilosus biosynthesised by the DesABCD enzyme cluster as a high affinity Fe(III) chelator.	1.97	1	0	acyclic desferrioxamine	bacterial metabolite; ferroptosis inhibitor; iron chelator; siderophore
desipramine Desipramine: A tricyclic dibenzazepine compound that potentiates neurotransmission. Desipramine selectively blocks reuptake of norepinephrine from the neural synapse, and also appears to impair serotonin transport. This compound also possesses minor anticholinergic activity, through its affinity to muscarinic receptors.. desipramine : A dibenzoazepine consisting of 10,11-dihydro-5H-dibenzo[b,f]azepine substituted on nitrogen with a 3-(methylamino)propyl group.	2.04	1	0	dibenzoazepine; secondary amino compound	adrenergic uptake inhibitor; alpha-adrenergic antagonist; antidepressant; cholinergic antagonist; drug allergen; EC 3.1.4.12 (sphingomyelin phosphodiesterase) inhibitor; EC 3.4.21.26 (prolyl oligopeptidase) inhibitor; H1-receptor antagonist; serotonin uptake inhibitor
dichlorodiphenyl dichloroethylene Dichlorodiphenyl Dichloroethylene: An organochlorine pesticide, it is the ethylene metabolite of DDT.	2.05	1	0	chlorophenylethylene; monochlorobenzenes	human xenobiotic metabolite; persistent organic pollutant
ddt 1,1-bis(p-chlorophenyl)-2,2,2-trichloroethane: structure in first source	3.21	1	0	benzenoid aromatic compound; chlorophenylethane; monochlorobenzenes; organochlorine insecticide	bridged diphenyl acaricide; carcinogenic agent; endocrine disruptor; persistent organic pollutant
n(6),n(6)-dimethyladenine N(6),N(6)-dimethyladenine : A tertiary amine that is adenine substituted at N-6 by geminal methyl groups.	2.05	1	0	tertiary amine
ether Ether: A mobile, very volatile, highly flammable liquid used as an inhalation anesthetic and as a solvent for waxes, fats, oils, perfumes, alkaloids, and gums. It is mildly irritating to skin and mucous membranes.. ether : An organooxygen compound with formula ROR, where R is not hydrogen.. diethyl ether : An ether in which the oxygen atom is linked to two ethyl groups.	3.16	5	0	ether; volatile organic compound	inhalation anaesthetic; non-polar solvent; refrigerant
ethylenediamine ethylenediamine: RN given refers to parent cpd; edamine is the recommended contraction for the ethylenediamine radical. ethylenediamine : An alkane-alpha,omega-diamine in which the alkane is ethane.	2.02	1	0	alkane-alpha,omega-diamine	GABA agonist
fluorouracil Fluorouracil: A pyrimidine analog that is an antineoplastic antimetabolite. It interferes with DNA synthesis by blocking the THYMIDYLATE SYNTHETASE conversion of deoxyuridylic acid to thymidylic acid.. 5-fluorouracil : A nucleobase analogue that is uracil in which the hydrogen at position 5 is replaced by fluorine. It is an antineoplastic agent which acts as an antimetabolite - following conversion to the active deoxynucleotide, it inhibits DNA synthesis (by blocking the conversion of deoxyuridylic acid to thymidylic acid by the cellular enzyme thymidylate synthetase) and so slows tumour growth.	2.1	1	0	nucleobase analogue; organofluorine compound	antimetabolite; antineoplastic agent; environmental contaminant; immunosuppressive agent; radiosensitizing agent; xenobiotic
flurbiprofen Flurbiprofen: An anti-inflammatory analgesic and antipyretic of the phenylalkynoic acid series. It has been shown to reduce bone resorption in periodontal disease by inhibiting CARBONIC ANHYDRASE.. flurbiprofen : A monocarboxylic acid that is a 2-fluoro-[1,1'-biphenyl-4-yl] moiety linked to C-2 of propionic acid. A non-steroidal anti-inflammatory, analgesic and antipyretic, it is used as a pre-operative anti-miotic as well as orally for arthritis or dental pain.	2.03	1	0	fluorobiphenyl; monocarboxylic acid	antipyretic; EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor; non-narcotic analgesic; non-steroidal anti-inflammatory drug
glutaral Glutaral: One of the protein CROSS-LINKING REAGENTS that is used as a disinfectant for sterilization of heat-sensitive equipment and as a laboratory reagent, especially as a fixative.. glutaraldehyde : A dialdehyde comprised of pentane with aldehyde functions at C-1 and C-5.	2.1	1	0	dialdehyde	cross-linking reagent; disinfectant; fixative
ibuprofen Midol: combination of cinnamedrine, phenacetin, aspirin & caffeine	2.46	2	0	monocarboxylic acid	antipyretic; cyclooxygenase 1 inhibitor; cyclooxygenase 2 inhibitor; drug allergen; environmental contaminant; geroprotector; non-narcotic analgesic; non-steroidal anti-inflammatory drug; radical scavenger; xenobiotic
imipramine Imipramine: The prototypical tricyclic antidepressant. It has been used in major depression, dysthymia, bipolar depression, attention-deficit disorders, agoraphobia, and panic disorders. It has less sedative effect than some other members of this therapeutic group.. imipramine : A dibenzoazepine that is 5H-dibenzo[b,f]azepine substituted by a 3-(dimethylamino)propyl group at the nitrogen atom.	2.04	1	0	dibenzoazepine	adrenergic uptake inhibitor; antidepressant; EC 3.4.21.26 (prolyl oligopeptidase) inhibitor
2-propanol 2-Propanol: An isomer of 1-PROPANOL. It is a colorless liquid having disinfectant properties. It is used in the manufacture of acetone and its derivatives and as a solvent. Topically, it is used as an antiseptic.. propan-2-ol : A secondary alcohol that is propane in which one of the hydrogens attached to the central carbon is substituted by a hydroxy group.	3.3	6	0	secondary alcohol; secondary fatty alcohol	protic solvent
mirtazapine Mirtazapine: A piperazinoazepine tetracyclic compound that enhances the release of NOREPINEPHRINE and SEROTONIN through blockage of presynaptic ALPHA-2 ADRENERGIC RECEPTORS. It also blocks both 5-HT2 and 5-HT3 serotonin receptors and is a potent HISTAMINE H1 RECEPTOR antagonist. It is used for the treatment of depression, and may also be useful for the treatment of anxiety disorders.	2.04	1	0	benzazepine; tetracyclic antidepressant	alpha-adrenergic antagonist; anxiolytic drug; H1-receptor antagonist; histamine antagonist; oneirogen; serotonergic antagonist
moclobemide Moclobemide: A reversible inhibitor of monoamine oxidase type A; (RIMA); (see MONOAMINE OXIDASE INHIBITORS) that has antidepressive properties.. moclobemide : A member of the class of benzamides that is benzamide substituted by a chloro group at position 4 and a 2-(morpholin-4-yl)ethyl group at the nitrogen atom. It acts as a reversible monoamine oxidase inhibitor and is used in the treatment of depression.	1.99	1	0	benzamides; monochlorobenzenes; morpholines	antidepressant; environmental contaminant; xenobiotic
nalidixic acid [no description available]	1.99	1	0	1,8-naphthyridine derivative; monocarboxylic acid; quinolone antibiotic	antibacterial drug; antimicrobial agent; DNA synthesis inhibitor
activins Activins: Activins are produced in the pituitary, gonads, and other tissues. By acting locally, they stimulate pituitary FSH secretion and have diverse effects on cell differentiation and embryonic development. Activins are glycoproteins that are hetero- or homodimers of INHIBIN-BETA SUBUNITS.	1.99	1	0
nifedipine Nifedipine: A potent vasodilator agent with calcium antagonistic action. It is a useful anti-anginal agent that also lowers blood pressure.	2.01	1	0	C-nitro compound; dihydropyridine; methyl ester	calcium channel blocker; human metabolite; tocolytic agent; vasodilator agent
nifenazone nifenazone: RN given refers to parent cpd; structure	2.1	1	0	pyrazoles; ring assembly
quinone benzoquinone : The simplest members of the class of benzoquinones, consisting of cyclohexadiene which is substituted by two oxo groups.. 1,4-benzoquinone : The simplest member of the class of 1,4-benzoquinones, obtained by the formal oxidation of hydroquinone to the corresponding diketone. It is a metabolite of benzene.. quinone : Compounds having a fully conjugated cyclic dione structure, such as that of benzoquinones, derived from aromatic compounds by conversion of an even number of -CH= groups into -C(=O)- groups with any necessary rearrangement of double bonds (polycyclic and heterocyclic analogues are included).	7.54	2	0	1,4-benzoquinones	cofactor; human xenobiotic metabolite; mouse metabolite
4-dichlorobenzene dichlorobenzene : Any member of the class of chlorobenzenes carrying two chloro groups at unspecified positions.. 1,4-dichlorobenzene : A dichlorobenzene carrying chloro groups at positions 1 and 4.	2.49	2	0	dichlorobenzene	insecticide
pd 153035 4-((3-bromophenyl)amino)-6,7-dimethoxyquinazoline: structure given in first source. PD-153035 : A member of the class of quinazolines carrying a 3-bromophenylamino substituent at position 4 and two methoxy substituents at positions 6 and 7.	2	1	0	aromatic amine; aromatic ether; bromobenzenes; quinazolines; secondary amino compound	EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor; epidermal growth factor receptor antagonist
phenacetin Saridon: contains phenacetin, caffeine, propyphenazone & pyrithyldione	2.4	2	0	acetamides; aromatic ether	cyclooxygenase 3 inhibitor; non-narcotic analgesic; peripheral nervous system drug
phenindione Phenindione: An indandione that has been used as an anticoagulant. Phenindione has actions similar to WARFARIN, but it is now rarely employed because of its higher incidence of severe adverse effects. (From Martindale, The Extra Pharmacopoeia, 30th ed, p234)	2.05	1	0	aromatic ketone; beta-diketone	anticoagulant
phenobarbital Phenobarbital: A barbituric acid derivative that acts as a nonselective central nervous system depressant. It potentiates GAMMA-AMINOBUTYRIC ACID action on GABA-A RECEPTORS, and modulates chloride currents through receptor channels. It also inhibits glutamate induced depolarizations.. phenobarbital : A member of the class of barbiturates, the structure of which is that of barbituric acid substituted at C-5 by ethyl and phenyl groups.	2.01	1	0	barbiturates	anticonvulsant; drug allergen; excitatory amino acid antagonist; sedative
promethazine Promethazine: A phenothiazine derivative with histamine H1-blocking, antimuscarinic, and sedative properties. It is used as an antiallergic, in pruritus, for motion sickness and sedation, and also in animals.. promethazine : A tertiary amine that is a substituted phenothiazine in which the ring nitrogen at position 10 is attached to C-3 of an N,N-dimethylpropan-2-amine moiety.	1.99	1	0	phenothiazines; tertiary amine	anti-allergic agent; anticoronaviral agent; antiemetic; antipruritic drug; H1-receptor antagonist; local anaesthetic; sedative
pyrilamine Pyrilamine: A histamine H1 antagonist. It has mild hypnotic properties and some local anesthetic action and is used for allergies (including skin eruptions) both parenterally and locally. It is a common ingredient of cold remedies.. mepyramine : An ethylenediamine derivative that is ethylenediamine in which one of the amino nitrogens is substituted by two methyl groups and the remaining amino nitrogen is substituted by a 4-methoxybenzyl and a pyridin-2-yl group.	2.04	1	0	aromatic ether; ethylenediamine derivative	H1-receptor antagonist
risperidone Risperidone: A selective blocker of DOPAMINE D2 RECEPTORS and SEROTONIN 5-HT2 RECEPTORS that acts as an atypical antipsychotic agent. It has been shown to improve both positive and negative symptoms in the treatment of SCHIZOPHRENIA.. risperidone : A member of the class of pyridopyrimidines that is 2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one carrying an additional 2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl group at position 2.	2.04	1	0	1,2-benzoxazoles; heteroarylpiperidine; organofluorine compound; pyridopyrimidine	alpha-adrenergic antagonist; dopaminergic antagonist; EC 3.4.21.26 (prolyl oligopeptidase) inhibitor; H1-receptor antagonist; psychotropic drug; second generation antipsychotic; serotonergic antagonist
sulfadiazine Sulfadiazine: One of the short-acting SULFONAMIDES used in combination with PYRIMETHAMINE to treat toxoplasmosis in patients with acquired immunodeficiency syndrome and in newborns with congenital infections.. sulfadiazine : A sulfonamide consisting of pyrimidine with a 4-aminobenzenesulfonamido group at the 2-position.. diazine : The parent structure of the diazines.	1.98	1	0	pyrimidines; substituted aniline; sulfonamide antibiotic; sulfonamide	antiinfective agent; antimicrobial agent; antiprotozoal drug; coccidiostat; drug allergen; EC 1.1.1.153 [sepiapterin reductase (L-erythro-7,8-dihydrobiopterin forming)] inhibitor; EC 2.5.1.15 (dihydropteroate synthase) inhibitor; environmental contaminant; xenobiotic
succinylsulfathiazole succinylsulfathiazole: intestinal antimicrobial agent; structure	6.98	1	0	1,3-thiazoles
sulfameter Sulfameter: Long acting sulfonamide used in leprosy, urinary, and respiratory tract infections.. sulfamethoxydiazine : A sulfonamide consisting of pyrimidine having a methoxy substituent at the 5-position and a 4-aminobenzenesulfonamido group at the 2-position.	2.11	1	0	pyrimidines; sulfonamide antibiotic; sulfonamide	antiinfective agent; leprostatic drug; renal agent
sulfamethazine Sulfamethazine: A sulfanilamide anti-infective agent. It has a spectrum of antimicrobial action similar to other sulfonamides.. sulfamethazine : A sulfonamide consisting of pyrimidine with methyl substituents at the 4- and 6-positions and a 4-aminobenzenesulfonamido group at the 2-position.	1.98	1	0	pyrimidines; sulfonamide antibiotic; sulfonamide	antibacterial drug; antiinfective agent; antimicrobial agent; carcinogenic agent; drug allergen; EC 2.5.1.15 (dihydropteroate synthase) inhibitor; environmental contaminant; ligand; xenobiotic
sulfamethoxazole Sulfamethoxazole: A bacteriostatic antibacterial agent that interferes with folic acid synthesis in susceptible bacteria. Its broad spectrum of activity has been limited by the development of resistance. (From Martindale, The Extra Pharmacopoeia, 30th ed, p208). sulfamethoxazole : An isoxazole (1,2-oxazole) compound having a methyl substituent at the 5-position and a 4-aminobenzenesulfonamido group at the 3-position.	1.98	1	0	isoxazoles; substituted aniline; sulfonamide antibiotic; sulfonamide	antibacterial agent; antiinfective agent; antimicrobial agent; drug allergen; EC 1.1.1.153 [sepiapterin reductase (L-erythro-7,8-dihydrobiopterin forming)] inhibitor; EC 2.5.1.15 (dihydropteroate synthase) inhibitor; environmental contaminant; epitope; P450 inhibitor; xenobiotic
sulfasalazine Sulfasalazine: A drug that is used in the management of inflammatory bowel diseases. Its activity is generally considered to lie in its metabolic breakdown product, 5-aminosalicylic acid (see MESALAMINE) released in the colon. (From Martindale, The Extra Pharmacopoeia, 30th ed, p907). sulfasalazine : An azobenzene consisting of diphenyldiazene having a carboxy substituent at the 4-position, a hydroxy substituent at the 3-position and a 2-pyridylaminosulphonyl substituent at the 4'-position.	2.05	1	0
sulfisoxazole Sulfisoxazole: A short-acting sulfonamide antibacterial with activity against a wide range of gram- negative and gram-positive organisms.. sulfisoxazole : A sulfonamide antibacterial with an oxazole substituent. It has antibiotic activity against a wide range of gram-negative and gram-positive organisms.	2.05	1	0	isoxazoles; sulfonamide antibiotic; sulfonamide	antibacterial drug; drug allergen
1,4-bis(2-(3,5-dichloropyridyloxy))benzene 1,4-bis(2-(3,5-dichloropyridyloxy))benzene: potent phenobarbital-like inducer of microsomal monooxygenase activity; structure given in first source	2.01	1	0
theobromine Theobromine: 3,7-Dimethylxanthine. The principle alkaloid in Theobroma cacao (the cacao bean) and other plants. A xanthine alkaloid that is used as a bronchodilator and as a vasodilator. It has a weaker diuretic activity than THEOPHYLLINE and is also a less powerful stimulant of smooth muscle. It has practically no stimulant effect on the central nervous system. It was formerly used as a diuretic and in the treatment of angina pectoris and hypertension. (From Martindale, The Extra Pharmacopoeia, 30th ed, pp1318-9). theobromine : A dimethylxanthine having the two methyl groups located at positions 3 and 7. A purine alkaloid derived from the cacao plant, it is found in chocolate, as well as in a number of other foods, and is a vasodilator, diuretic and heart stimulator.	2	1	0	dimethylxanthine	adenosine receptor antagonist; bronchodilator agent; food component; human blood serum metabolite; mouse metabolite; plant metabolite; vasodilator agent
bromoform bromoform: structure	2.17	1	0	bromohydrocarbon; bromomethanes
triclosan [no description available]	3.21	1	0	aromatic ether; dichlorobenzene; monochlorobenzenes; phenols	antibacterial agent; antimalarial; drug allergen; EC 1.3.1.9 [enoyl-[acyl-carrier-protein] reductase (NADH)] inhibitor; EC 1.5.1.3 (dihydrofolate reductase) inhibitor; fungicide; persistent organic pollutant; xenobiotic
trifluralin Trifluralin: A microtubule-disrupting pre-emergence herbicide.. trifluralin : A substituted aniline that is N,N-dipropylaniline substituted by a nitro groups at positions 2 and 6 and a trifluoromethyl group at position 4. It is an agrochemical used as a pre-emergence herbicide.	2.05	1	0	(trifluoromethyl)benzenes; C-nitro compound; substituted aniline	agrochemical; environmental contaminant; herbicide; xenobiotic
urethane [no description available]	2.17	1	0	carbamate ester	fungal metabolite; mutagen
sorbitol D-glucitol : The D-enantiomer of glucitol (also known as D-sorbitol).	2.06	1	0	glucitol	cathartic; Escherichia coli metabolite; food humectant; human metabolite; laxative; metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite; sweetening agent
thymidine [no description available]	2	1	0	pyrimidine 2'-deoxyribonucleoside	Escherichia coli metabolite; human metabolite; metabolite; mouse metabolite
benzimidazole 1H-benzimidazole : The 1H-tautomer of benzimidazole.	2.11	1	0	benzimidazole; polycyclic heteroarene
hydroxyproline Hydroxyproline: A hydroxylated form of the imino acid proline. A deficiency in ASCORBIC ACID can result in impaired hydroxyproline formation.. hydroxyproline : A proline derivative that is proline substituted by at least one hydroxy group.	2.03	1	0	4-hydroxyproline; L-alpha-amino acid zwitterion	human metabolite; mouse metabolite; plant metabolite
thyroxine Thyroxine: The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (MONOIODOTYROSINE) and the coupling of iodotyrosines (DIIODOTYROSINE) in the THYROGLOBULIN. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form TRIIODOTHYRONINE which exerts a broad spectrum of stimulatory effects on cell metabolism.. thyroxine : An iodothyronine compound having iodo substituents at the 3-, 3'-, 5- and 5'-positions.	1.93	1	0	2-halophenol; iodophenol; L-phenylalanine derivative; non-proteinogenic L-alpha-amino acid; thyroxine zwitterion; thyroxine	antithyroid drug; human metabolite; mouse metabolite; thyroid hormone
diethylnitrosamine Diethylnitrosamine: A nitrosamine derivative with alkylating, carcinogenic, and mutagenic properties.. N-nitrosodiethylamine : A nitrosamine that is N-ethylethanamine substituted by a nitroso group at the N-atom.	2.37	2	0	nitrosamine	carcinogenic agent; hepatotoxic agent; mutagen
carbon tetrachloride Carbon Tetrachloride: A solvent for oils, fats, lacquers, varnishes, rubber waxes, and resins, and a starting material in the manufacturing of organic compounds. Poisoning by inhalation, ingestion or skin absorption is possible and may be fatal. (Merck Index, 11th ed). tetrachloromethane : A chlorocarbon that is methane in which all the hydrogens have been replaced by chloro groups.	3.84	3	0	chlorocarbon; chloromethanes	hepatotoxic agent; refrigerant
alanine Alanine: A non-essential amino acid that occurs in high levels in its free state in plasma. It is produced from pyruvate by transamination. It is involved in sugar and acid metabolism, increases IMMUNITY, and provides energy for muscle tissue, BRAIN, and the CENTRAL NERVOUS SYSTEM.. alanine : An alpha-amino acid that consists of propionic acid bearing an amino substituent at position 2.	2.01	1	0	alanine zwitterion; alanine; L-alpha-amino acid; proteinogenic amino acid; pyruvate family amino acid	EC 4.3.1.15 (diaminopropionate ammonia-lyase) inhibitor; fundamental metabolite
chloramphenicol Amphenicol: Chloramphenicol and its derivatives.	2.15	1	0	C-nitro compound; carboxamide; diol; organochlorine compound	antibacterial drug; antimicrobial agent; Escherichia coli metabolite; geroprotector; Mycoplasma genitalium metabolite; protein synthesis inhibitor
cyanides Cyanides: Inorganic salts of HYDROGEN CYANIDE containing the -CN radical. The concept also includes isocyanides. It is distinguished from NITRILES, which denotes organic compounds containing the -CN radical.. cyanides : Salts and C-organyl derivatives of hydrogen cyanide, HC#N.. isocyanide : The isomer HN(+)#C(-) of hydrocyanic acid, HC#N, and its hydrocarbyl derivatives RNC (RN(+)#C(-)).. cyanide : A pseudohalide anion that is the conjugate base of hydrogen cyanide.	2.44	2	0	pseudohalide anion	EC 1.9.3.1 (cytochrome c oxidase) inhibitor
sulfamic acid sulfamic acid: standard in alkalimetry; RN given refers to parent cpd; structure. sulfamic acid : The simplest of the sulfamic acids consisting of a single sulfur atom covalently bound by single bonds to hydroxy and amino groups and by double bonds to two oxygen atoms.	1.92	1	0	sulfamic acids
sucrose Saccharum: A plant genus of the family POACEAE widely cultivated in the tropics for the sweet cane that is processed into sugar.	2.72	3	0	glycosyl glycoside	algal metabolite; Escherichia coli metabolite; human metabolite; mouse metabolite; osmolyte; Saccharomyces cerevisiae metabolite; sweetening agent
2,3,4,6-tetrachlorophenol 2,3,4,6-tetrachlorophenol: RN given refers to parent cpd; see also record for tetrachlorophenol with locants for chloro groups not specified. 2,3,4,6-tetrachlorophenol : A tetrachlorophenol in which the chlorines are located at positions 2, 3, 4, and 6.	2.05	1	0	tetrachlorophenol	xenobiotic metabolite
uridine [no description available]	7.05	1	0	uridines	drug metabolite; fundamental metabolite; human metabolite
bromodeoxyuridine Bromodeoxyuridine: A nucleoside that substitutes for thymidine in DNA and thus acts as an antimetabolite. It causes breaks in chromosomes and has been proposed as an antiviral and antineoplastic agent. It has been given orphan drug status for use in the treatment of primary brain tumors.	2.02	1	0	pyrimidine 2'-deoxyribonucleoside	antimetabolite; antineoplastic agent
n-nitrosomorpholine N-nitrosomorpholine : A nitrosamine that is morpholine in which the hydrogen attached to the nitrogen is replaced by a nitroso group. A carcinogen and mutagen, it is found in snuff tobacco.	2.07	1	0	nitrosamine	carcinogenic agent; mutagen
edetic acid Edetic Acid: A chelating agent that sequesters a variety of polyvalent cations such as CALCIUM. It is used in pharmaceutical manufacturing and as a food additive.	2.02	1	0	ethylenediamine derivative; polyamino carboxylic acid; tetracarboxylic acid	anticoagulant; antidote; chelator; copper chelator; geroprotector
phenylethyl alcohol Phenylethyl Alcohol: An antimicrobial, antiseptic, and disinfectant that is used also as an aromatic essence and preservative in pharmaceutics and perfumery.. 2-phenylethanol : A primary alcohol that is ethanol substituted by a phenyl group at position 2.	2.02	1	0	benzenes; primary alcohol	Aspergillus metabolite; fragrance; plant growth retardant; plant metabolite; Saccharomyces cerevisiae metabolite
tyrosine Tyrosine: A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin.. tyrosine : An alpha-amino acid that is phenylalanine bearing a hydroxy substituent at position 4 on the phenyl ring.	2.39	2	0	amino acid zwitterion; erythrose 4-phosphate/phosphoenolpyruvate family amino acid; L-alpha-amino acid; proteinogenic amino acid; tyrosine	EC 1.3.1.43 (arogenate dehydrogenase) inhibitor; fundamental metabolite; micronutrient; nutraceutical
aniline [no description available]	2.9	4	0	anilines; primary arylamine
dimethylnitrosamine Dimethylnitrosamine: A nitrosamine derivative with alkylating, carcinogenic, and mutagenic properties. It causes serious liver damage and is a hepatocarcinogen in rodents.	4.33	3	0	nitrosamine	geroprotector; mutagen
phenylalanine Phenylalanine: An essential aromatic amino acid that is a precursor of MELANIN; DOPAMINE; noradrenalin (NOREPINEPHRINE), and THYROXINE.. L-phenylalanine : The L-enantiomer of phenylalanine.. phenylalanine : An aromatic amino acid that is alanine in which one of the methyl hydrogens is substituted by a phenyl group.	2.92	4	0	amino acid zwitterion; erythrose 4-phosphate/phosphoenolpyruvate family amino acid; L-alpha-amino acid; phenylalanine; proteinogenic amino acid	algal metabolite; EC 3.1.3.1 (alkaline phosphatase) inhibitor; Escherichia coli metabolite; human xenobiotic metabolite; micronutrient; mouse metabolite; nutraceutical; plant metabolite; Saccharomyces cerevisiae metabolite
chloroform Chloroform: A commonly used laboratory solvent. It was previously used as an anesthetic, but was banned from use in the U.S. due to its suspected carcinogenicity.. chloroform : A one-carbon compound that is methane in which three of the hydrogens are replaced by chlorines.	4.82	10	0	chloromethanes; one-carbon compound	carcinogenic agent; central nervous system drug; inhalation anaesthetic; non-polar solvent; refrigerant
hexachloroethane [no description available]	2.05	1	0	chlorocarbon; chloroethanes	carcinogenic agent; refrigerant
dimethylformamide Dimethylformamide: A formamide in which the amino hydrogens are replaced by methyl groups.. N,N-dimethylformamide : A member of the class of formamides that is formamide in which the amino hydrogens are replaced by methyl groups.	10.2	15	0	formamides; volatile organic compound	geroprotector; hepatotoxic agent; polar aprotic solvent
phenacyl bromide phenacyl bromide: structure. phenacyl bromide : An alpha-bromoketone that is acetophenone substituted by a bromo group at position 2.	2.07	1	0	acetophenones; alpha-bromoketone	metabolite
histidine Histidine: An essential amino acid that is required for the production of HISTAMINE.. L-histidine : The L-enantiomer of the amino acid histidine.. histidine : An alpha-amino acid that is propanoic acid bearing an amino substituent at position 2 and a 1H-imidazol-4-yl group at position 3.	2.38	2	0	amino acid zwitterion; histidine; L-alpha-amino acid; polar amino acid zwitterion; proteinogenic amino acid	algal metabolite; Escherichia coli metabolite; human metabolite; micronutrient; mouse metabolite; nutraceutical; Saccharomyces cerevisiae metabolite
n-pentanol n-pentanol: RN given refers to parent cpd. pentan-1-ol : A short-chain primary fatty alcohol that is pentane in which a hydrogen of one of the methyl groups is substituted by a hydroxy group. It has been isolated from Melicope ptelefolia.	1.98	1	0	pentanol; short-chain primary fatty alcohol	human metabolite; plant metabolite
1,1,1-trichloroethane Trichloroethanes: Chlorinated ethanes which are used extensively as industrial solvents. They have been utilized in numerous home-use products including spot remover preparations and inhalant decongestant sprays. These compounds cause central nervous system and cardiovascular depression and are hepatotoxic. Include 1,1,1- and 1,1,2-isomers.. 1,1,1-trichloroethane : A member of the class of chloroethanes carrying three chloro substituents at position 1.	3.84	10	0	chloroethanes	polar solvent
perthane perthane: structure	2.05	1	0
tryptophan Tryptophan: An essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals.. tryptophan : An alpha-amino acid that is alanine bearing an indol-3-yl substituent at position 3.	2.9	4	0	erythrose 4-phosphate/phosphoenolpyruvate family amino acid; L-alpha-amino acid zwitterion; L-alpha-amino acid; proteinogenic amino acid; tryptophan zwitterion; tryptophan	antidepressant; Escherichia coli metabolite; human metabolite; micronutrient; mouse metabolite; nutraceutical; plant metabolite; Saccharomyces cerevisiae metabolite
arginine Arginine: An essential amino acid that is physiologically active in the L-form.. arginine : An alpha-amino acid that is glycine in which the alpha-is substituted by a 3-guanidinopropyl group.	2.38	2	0	arginine; glutamine family amino acid; L-alpha-amino acid; proteinogenic amino acid	biomarker; Escherichia coli metabolite; micronutrient; mouse metabolite; nutraceutical
ethane Ethane: A two carbon alkane with the formula H3C-CH3.. ethane : An alkane comprising of two carbon atoms.	2.77	3	0	alkane; gas molecular entity	plant metabolite; refrigerant
ethylene Plastipore: high density polyethylene sponge biocompatible material; used as posts in dental bridges	2.37	2	0	alkene; gas molecular entity	plant hormone; refrigerant
acetylene [no description available]	2.01	1	0	alkyne; gas molecular entity; terminal acetylenic compound
boranes Boranes: The collective name for the boron hydrides, which are analogous to the alkanes and silanes. Numerous boranes are known. Some have high calorific values and are used in high-energy fuels. (From Grant & Hackh's Chemical Dictionary, 5th ed). borane : The simplest borane, consisting of a single boron atom carrying three hydrogens.. boranes : The molecular hydrides of boron.	2.61	2	0	boranes; mononuclear parent hydride
propane Propane: A three carbon alkane with the formula H3CCH2CH3.	3	4	0	alkane; gas molecular entity	food propellant
ethyl chloride Ethyl Chloride: A gas that condenses under slight pressure. Because of its low boiling point ethyl chloride sprayed on skin produces an intense cold by evaporation. Cold blocks nerve conduction. Ethyl chloride has been used in surgery but is primarily used to relieve local pain in sports medicine.. chloroethane : The simplest and least toxic member of the class of chloroethanes, that is ethane in which a single hydrogen is substituted by a chlorine. A colourless gas at room temperature and pressure (boiling point 12degreeC), it is used as a mild topical anaesthetic to numb the skin prior to ear piercing, skin biopsies, etc., and is also used in the treatment of sports injuries. It was formerly used in the production of tetraethyllead.	2.05	1	0	chloroethanes	antipruritic drug; inhalation anaesthetic; local anaesthetic
acetonitrile acetonitrile: RN given refers to unlabeled cpd. acetonitrile : A nitrile that is hydrogen cyanide in which the hydrogen has been replaced by a methyl group.	4.92	35	0	aliphatic nitrile; volatile organic compound	EC 3.5.1.4 (amidase) inhibitor; NMR chemical shift reference compound; polar aprotic solvent
methylene chloride Methylene Chloride: A chlorinated hydrocarbon that has been used as an inhalation anesthetic and acts as a narcotic in high concentrations. Its primary use is as a solvent in manufacturing and food technology.. dichloromethane : A member of the class of chloromethanes that is methane in which two of the hydrogens have been replaced by chlorine. A dense, non-flammible colourless liquid at room temperature (b.p. 40degreeC, d = 1.33) which is immiscible with water, it is widely used as a solvent, a paint stripper, and for the removal of caffeine from coffee and tea.	4.64	8	0	chloromethanes; volatile organic compound	carcinogenic agent; polar aprotic solvent; refrigerant
cyclopropane cyclopropane : A cycloalkane composed of three carbon atoms to form a ring.	2	1	0	cycloalkane; cyclopropanes	inhalation anaesthetic
ethylene oxide Ethylene Oxide: A colorless and flammable gas at room temperature and pressure. Ethylene oxide is a bactericidal, fungicidal, and sporicidal disinfectant. It is effective against most micro-organisms, including viruses. It is used as a fumigant for foodstuffs and textiles and as an agent for the gaseous sterilization of heat-labile pharmaceutical and surgical materials. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p794). oxirane : A saturated organic heteromonocyclic parent that is a three-membered heterocycle of two carbon atoms and one oxygen atom.	3.06	5	0	gas molecular entity; oxacycle; saturated organic heteromonocyclic parent	allergen; mouse metabolite; mutagen
boron trifluoride [no description available]	2.17	1	0	boron fluoride	NMR chemical shift reference compound
bromodichloromethane bromodichloromethane: RN given refers to parent cpd. bromodichloromethane : A halomethane that is dichloromethane in which oneof the hydrogens has been replaced by a bromine atom. It occurs as a contaminant in drinking water.	2.05	1	0	halomethane	environmental contaminant; reagent
vinylidene chloride vinylidene chloride: potent hepatotoxin. 1,1-dichloroethene : A member of the class of chloroethenes that is ethene in which both of the hydrogens attached to one of the carbons are replaced by chlorines.	2.82	3	0	chloroethenes	carcinogenic agent; mouse metabolite; mutagen
nitromethane nitromethane: structure. nitromethane : A primary nitroalkane that is methane in which one of the hydrogens is replace by a nitro group. A polar solvent (b.p. 101 degreeC), it is an important starting material in organic synthesis. It is also used as a fuel for rockets and radio-controlled models.	2.04	1	0	primary nitroalkane; volatile organic compound	EC 4.3.1.3 (histidine ammonia-lyase) inhibitor; explosive; NMR chemical shift reference compound; polar aprotic solvent
tert-butyl alcohol tert-Butyl Alcohol: An isomer of butanol that contains a tertiary butyl group that consists of three methyl groups, each separately attached to a central (tertiary) carbon.. tert-butanol : A tertiary alcohol alcohol that is isobutane substituted by a hydroxy group at position 2.	2.08	1	0	tertiary alcohol	human xenobiotic metabolite
trifluoroethanol Trifluoroethanol: A non-aqueous co-solvent that serves as tool to study protein folding. It is also used in various pharmaceutical, chemical and engineering applications.	2.9	4	0	fluoroalcohol
pentachloroethane [no description available]	2.05	1	0	chloroethanes	non-polar solvent
trichloroacetic acid Trichloroacetic Acid: A strong acid used as a protein precipitant in clinical chemistry and also as a caustic for removing warts.. trichloroacetic acid : A monocarboxylic acid that is acetic acid in which all three methyl hydrogens are substituted by chlorine.	3.21	1	0	monocarboxylic acid; organochlorine compound	carcinogenic agent; metabolite; mouse metabolite
trifluoroacetic acid Trifluoroacetic Acid: A very strong halogenated derivative of acetic acid. It is used in acid catalyzed reactions, especially those where an ester is cleaved in peptide synthesis.. trifluoroacetic acid : A monocarboxylic acid that is the trifluoro derivative of acetic acid.	2.44	2	0	fluoroalkanoic acid	human xenobiotic metabolite; NMR chemical shift reference compound; reagent
phencyclidine Phencyclidine: A hallucinogen formerly used as a veterinary anesthetic, and briefly as a general anesthetic for humans. Phencyclidine is similar to KETAMINE in structure and in many of its effects. Like ketamine, it can produce a dissociative state. It exerts its pharmacological action through inhibition of NMDA receptors (RECEPTORS, N-METHYL-D-ASPARTATE). As a drug of abuse, it is known as PCP and Angel Dust.. phencyclidine : A member of the class of piperidines that is piperidine in which the nitrogen is substituted with a 1-phenylcyclohexyl group. Formerly used as an anaesthetic agent, it exhibits both hallucinogenic and neurotoxic effects.	2.11	1	0	benzenes; piperidines	anaesthetic; neurotoxin; NMDA receptor antagonist; psychotropic drug
tromethamine Tromethamine: An organic amine proton acceptor. It is used in the synthesis of surface-active agents and pharmaceuticals; as an emulsifying agent for cosmetic creams and lotions, mineral oil and paraffin wax emulsions, as a biological buffer, and used as an alkalizer. (From Merck, 11th ed; Martindale, The Extra Pharmacopoeia, 30th ed, p1424)	2.01	1	0	primary amino compound; triol	buffer
isoprene isoprene: used in manufacture of ''synthetic'' rubber, butyl rubber; copolymer in production of elastomers; structure. isoprene : A hemiterpene with the formula CH2=C(CH3)CH=CH2; the monomer of natural rubber and a common structure motif to the isoprenoids, a large class of other naturally occurring compounds.	2.07	1	0	alkadiene; hemiterpene; volatile organic compound	plant metabolite
methylethyl ketone methylethyl ketone: solvent; colorless synthetic resins, smokeless powders; may be irritating to eyes, mucous membranes; may be toxic in high concentrations; structure. butanone : Any ketone that is butane substituted by an oxo group at unspecified position.. butan-2-one : A dialkyl ketone that is a four-carbon ketone carrying a single keto- group at position C-2.	2.01	1	0	butanone; dialkyl ketone; methyl ketone; volatile organic compound	bacterial metabolite; polar aprotic solvent
chloroacetone [no description available]	2.07	1	0	alpha-chloroketone
1,1,2-trichloroethane 1,1,2-trichloroethane: RN given refers to cpd with locants as specified. 1,1,2-trichloroethane : A member of the class of chloroethanes that is ethane substituted by chloro groups at positions 1, 1 and 2.	2.05	1	0	chloroethanes
trichloroethylene Trichloroethylene: A highly volatile inhalation anesthetic used mainly in short surgical procedures where light anesthesia with good analgesia is required. It is also used as an industrial solvent. Prolonged exposure to high concentrations of the vapor can lead to cardiotoxicity and neurological impairment.. triol : A chemical compound containing three hydroxy groups.	6.06	20	0	chloroethenes	inhalation anaesthetic; mouse metabolite
acrylic acid acrylic acid: RN given refers to parent cpd. acrylic acid : A alpha,beta-unsaturated monocarboxylic acid that is ethene substituted by a carboxy group.	2.1	1	0	alpha,beta-unsaturated monocarboxylic acid	metabolite
1,1,2,2-tetrachloroethane 1,1,2,2-tetrachloroethane: see also record for tetrachloroethane. 1,1,2,2-tetrachloroethane : A member of the class of chloroethanes that is ethane substituted by chloro groups at positions 1, 1, 2 and 2.	2.05	1	0	chloroethanes
1-amino-2,4-dibromoanthraquinone 1-amino-2,4-dibromoanthraquinone: intermediate in the production of dyes	2.05	1	0	anthraquinone
diphenadione diphenadione: major descriptor (66-86); on-line search PHENINDIONE (66-74); PHENINDIONE/AA (75-86); INDEX MEDICUS search DIPHENADIONE (66-86); RN given refers to parent cpd	2.05	1	0	beta-triketone; diarylmethane
dichlorodicyanobenzoquinone dichlorodicyanobenzoquinone: request from searcher	2.43	2	0
hexachlorobutadiene hexachlorobutadiene: a potent nephrotoxicant in rats; structure	8.46	2	0	organochlorine compound
n-vinyl-2-pyrrolidinone N-vinyl-2-pyrrolidinone: monomer of POVIDONE; structure given in first source	2.78	3	0	pyrrolidin-2-ones
2-anisidine 2-anisidine: RN given refers to parent cpd; structure. o-anisidine : A substituted aniline that is aniline in which the hydrogen ortho to the amino group has been replaced by a methoxy group. It is used as a chemical intermediate in the synthesis of azo pigments and dyes.	2	1	0	monomethoxybenzene; primary amino compound; substituted aniline	genotoxin; reagent
xanthone xanthone : The parent compound of the xanthone class consisting of xanthene bearing a single oxo substituent at position 9.	2.05	1	0	xanthones	insecticide
beta-glucono-1,5-lactone beta-glucono-1,5-lactone: structure. D-glucono-1,5-lactone : An aldono-1,5-lactone obtained from D-gluconic acid.	1.96	1	0	aldono-1,5-lactone; gluconolactone	animal metabolite; mouse metabolite
michler's ketone [no description available]	2.05	1	0	benzophenones
quinoxalines quinoxaline : A naphthyridine in which the nitrogens are at positions 1 and 4.	2.04	1	0	mancude organic heterobicyclic parent; naphthyridine; ortho-fused heteroarene
quinoline [no description available]	2.04	1	0	azaarene; mancude organic heterobicyclic parent; ortho-fused heteroarene; quinolines
2-nitroanisole 2-nitroanisole : A member of the class of 2-nitroanisoles that is anisole in which one of the hydrogens ortho to the methoxy group is replaced by a nitro group.	2.04	1	0	2-nitroanisoles	carcinogenic agent
4-phenylphenol 4-phenylphenol: RN given refers to cpd without isomeric designation. biphenyl-4-ol : A member of the class of hydroxybiphenyls that is biphenyl carrying a hydroxy group at position 4.	1.98	1	0	hydroxybiphenyls
xanthenes Xanthenes: Compounds with three aromatic rings in linear arrangement with an OXYGEN in the center ring.	2	1	0	xanthene
benzidine benzidine: RN given refers to parent cpd. benzidine : A member of the class of biphenyls that is 1,1'-biphenyl in which the hydrogen at the para-position of each phenyl group has been replaced by an amino group.	2.17	1	0	biphenyls; substituted aniline	carcinogenic agent
4,4'-dihydroxybiphenyl biphenyl-4,4'-diol : A member of the class of hydroxybiphenyls that is biphenyl with hydroxy groups at positions 4 and 4'.	2.03	1	0	hydroxybiphenyls
propylparaben Parabens: Methyl, propyl, butyl, and ethyl esters of p-hydroxybenzoic acid. They have been approved by the FDA as antimicrobial agents for foods and pharmaceuticals. (From Hawley's Condensed Chemical Dictionary, 11th ed, p872)	1.96	1	0	benzoate ester; paraben; phenols	antifungal agent; antimicrobial agent
cdec CDEC: structure	2.05	1	0	thiocarbonyl compound
benzothiazole benzothiazole: structure. benzothiazole : An organic heterobicyclic compound that is a fusion product between benzene and thiazole. The parent of the class of benzothiazoles.	2.04	1	0	benzothiazoles	environmental contaminant; plant metabolite; xenobiotic
2,4-diaminotoluene 2,4-diaminotoluene: RN given refers to unlabeled parent cpd; structure. 2,4-diaminotoluene : An aminotoluene that is para-toluidine with an additional amino group at position 2.	2.39	2	0	aminotoluene	metabolite
4-chloro-1,2-diaminobenzene 4-chloro-1,2-diaminobenzene: RN given refers to parent cpd	2.05	1	0	monochlorobenzenes
styrene oxide styrene oxide: structure. styrene oxide : An epoxide that is oxirane in which one of the hydrogens has been replaced by a phenyl group.	2.1	1	0	epoxide	human xenobiotic metabolite
1,2,3-trichloropropane [no description available]	2.45	2	0	organochlorine compound
alpha-chlorohydrin alpha-Chlorohydrin: A chlorinated PROPANEDIOL with antifertility activity in males used as a chemosterilant in rodents.. 3-chloropropane-1,2-diol : A chloropropane-1,2-diol that is propane-1,2-diol substituted by a chloro group at position 3.	2	1	0	chloropropane-1,2-diol
4-butyrolactone 4-Butyrolactone: One of the FURANS with a carbonyl thereby forming a cyclic lactone. It is an endogenous compound made from gamma-aminobutyrate and is the precursor of gamma-hydroxybutyrate. It is also used as a pharmacological agent and solvent.. tetrahydrofuranone : Any oxolane having an oxo- substituent at any position on the tetrahydrofuran ring.. gamma-butyrolactone : A butan-4-olide that is tetrahydrofuran substituted by an oxo group at position 2.	2.05	1	0	butan-4-olide	metabolite; neurotoxin
butyl methacrylate [no description available]	2.07	1	0	enoate ester
ethylene dimethacrylate ethylene glycol dimethacrylate : The enoate ester that is the 1,2-bis(methacryloyl) derivative of ethylene glycol.	2.08	1	0	enoate ester	allergen; cross-linking reagent; polymerisation monomer
furaldehyde Furaldehyde: A heterocyclic compound consisting of a furan where the hydrogen at position 2 is substituted by a formyl group.. furfural : An aldehyde that is furan with the hydrogen at position 2 substituted by a formyl group.	2.47	2	0	aldehyde; furans	Maillard reaction product; metabolite
acetophenone acetophenone : A methyl ketone that is acetone in which one of the methyl groups has been replaced by a phenyl group.	2.04	1	0	acetophenones	animal metabolite; photosensitizing agent; xenobiotic
benzoyl chloride benzoyl chloride: potential carcinogens in manufacturing process. benzoyl chloride : An acyl chloride consisting of benzene in which a hydrogen is replaced by an acyl chloride group. It is an important chemical intermediate for the manufacture of other chemicals, dyes, perfumes, herbicides and pharmaceuticals.	2.06	1	0	acyl chloride; benzenes	carcinogenic agent
nitrobenzene nitrobenzene : A nitroarene consisting of benzene carrying a single nitro substituent. An industrial chemical used widely in the production of aniline.	2.45	2	0	nitroarene; nitrobenzenes
5-nitro-2-toluidine 5-nitro-2-toluidine: structure given in first source; RN given refers to parent cpd. 5-nitro-o-toluidine : A C-nitro compound in which the nitro compound is meta to the amino group and para to the methyl group of o-toluidine.	2.05	1	0	C-nitro compound
5-nitro-2-methoxyaniline 5-nitro-2-methoxyaniline: RN given refers to parent cpd	2.05	1	0	4-nitroanisoles; substituted aniline
2-diethylaminoethanol 2-diethylaminoethanol: RN given refers to unlabeled parent cpd. 2-diethylaminoethanol : A member of the class of ethanolamines that is aminoethanol in which the hydrogens of the amino group are replaced by ethyl groups.	1.95	1	0	ethanolamines; primary alcohol; tertiary amino compound
ethylbenzene [no description available]	2.05	1	0	alkylbenzene
styrene Styrene: A colorless, toxic liquid with a strong aromatic odor. It is used to make rubbers, polymers and copolymers, and polystyrene plastics.. styrene : A vinylarene that is benzene carrying a vinyl group. It has been isolated from the benzoin resin produced by Styrax species.	3.52	2	0	styrenes; vinylarene; volatile organic compound	mouse metabolite; mutagen; plant metabolite
benzonitrile benzonitrile : A nitrile that is hydrogen cyanide in which the hydrogen has been replaced by a phenyl group.	2.04	1	0	benzenes; nitrile
4-cyanopyridine 4-cyanopyridine: spectroscopic probe for cytochrome P450 BM3	2.04	1	0
anisole anisole : A monomethoxybenzene that is benzene substituted by a methoxy group.	3.01	4	0	monomethoxybenzene	plant metabolite
quinuclidines Quinuclidines: A class of organic compounds which contain two rings that share a pair of bridgehead carbon atoms and contains an amine group.	2.15	1	0	quinuclidines; saturated organic heterobicyclic parent
triclocarban triclocarban: bacteriostat; antiseptic in soaps & other cleansing solns; germicide; structure. triclocarban : A member of the class of phenylureas that is urea substituted by a 4-chlorophenyl group and a 3,4-dichlorophenyl group at positions 1 and 3 respectively.	3.21	1	0	dichlorobenzene; monochlorobenzenes; phenylureas	antimicrobial agent; antiseptic drug; disinfectant; environmental contaminant; xenobiotic
di-(4-aminophenyl)ether di-(4-aminophenyl)ether: structure	2.05	1	0	aromatic ether
nonoxynol Nonoxynol: Nonionic surfactant mixtures varying in the number of repeating ethoxy (oxy-1,2-ethanediyl) groups. They are used as detergents, emulsifiers, wetting agents, defoaming agents, etc. Nonoxynol-9, the compound with 9 repeating ethoxy groups, is a spermatocide, formulated primarily as a component of vaginal foams and creams.	6.97	1	0
diethyl malonate diethyl malonate: isomer of diethylmalonic acid; one of most used compounds in drug synthesis, don't confuse with ethylmalonic acid	2.06	1	0	dicarboxylic acid
epichlorohydrin Epichlorohydrin: A chlorinated epoxy compound used as an industrial solvent. It is a strong skin irritant and carcinogen.. epichlorohydrin : An epoxide that is 1,2-epoxypropene in which one of the methyl hydrogens is substituted by chlorine.	2	1	0	epoxide; organochlorine compound
butane butane : A straight chain alkane composed of 4 carbon atoms.	2.6	1	0	alkane; gas molecular entity	food propellant; refrigerant
1,3-butadiene buta-1,3-diene : A butadiene with unsaturation at positions 1 and 3.	2.05	1	0	butadiene	carcinogenic agent; mutagen
acrylonitrile [no description available]	2.02	1	0	aliphatic nitrile; volatile organic compound	antifungal agent; carcinogenic agent; fungal metabolite; mutagen; polar aprotic solvent
methyl formate methyl formate: RN given refers to parent cpd. methyl formate : A formate ester resulting from the formal condensation of formic acid with methanol. A low-boiling (31.5 degreeC) colourless, flammable liquid, it has been used as a fumigant and larvicide for tobacco and food crops.	2.05	1	0	formate ester; methyl ester; volatile organic compound	fumigant; insecticide; polar aprotic solvent; refrigerant
2-methylpentane Hexanes: Six-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives. Various polyneuropathies are caused by hexane poisoning.	4.33	4	1	alkane
3-hydroxybutanal [no description available]	2.07	1	0
vinyl acetate [no description available]	2.05	1	0	acetate ester
mesitylene mesitylene: structure. 1,3,5-trimethylbenzene : A trimethylbenzene carrying methyl substituents at positions 1, 3 and 5.	2.06	1	0	trimethylbenzene
cyclohexanol Cyclohexanols: Monohydroxy derivatives of cyclohexanes that contain the general formula R-C6H11O. They have a camphorlike odor and are used in making soaps, insecticides, germicides, dry cleaning, and plasticizers.. cyclohexanols : An alcohol in which one or more hydroxy groups are attached to a cyclohexane skeleton.	2.05	1	0	cyclohexanols; secondary alcohol	solvent
cyclohexanone [no description available]	2.47	2	0	cyclohexanones	human xenobiotic metabolite
2-chloropyridine 2-chloropyridine: structure given in first source	2.04	1	0	monochloropyridine
pentane Pentanes: Five-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives.. pentane : A straight chain alkane consisting of 5 carbon atoms.	2.07	1	0	alkane; volatile organic compound	non-polar solvent; refrigerant
dicyanmethane malononitrile : A dinitrile that is methane substituted by two cyano groups.	2.07	1	0	aliphatic nitrile; dinitrile
pyrroles 1H-pyrrole : A tautomer of pyrrole that has the double bonds at positions 2 and 4.. pyrrole : A five-membered monocyclic heteroarene comprising one NH and four CH units which forms the parent compound of the pyrrole group of compounds. Its five-membered ring structure has three tautomers. A 'closed class'.. azole : Any monocyclic heteroarene consisting of a five-membered ring containing nitrogen. Azoles can also contain one or more other non-carbon atoms, such as nitrogen, sulfur or oxygen.	2.44	2	0	pyrrole; secondary amine
tetrahydrofuran oxolane : A cyclic ether that is butane in which one hydrogen from each methyl group is substituted by an oxygen.	4.87	33	0	cyclic ether; oxolanes; saturated organic heteromonocyclic parent; volatile organic compound	polar aprotic solvent
thiophenes Thiophenes: A monocyclic heteroarene furan in which the oxygen atom is replaced by a sulfur.. thiophenes : Compounds containing at least one thiophene ring.	2.76	3	0	mancude organic heteromonocyclic parent; monocyclic heteroarene; thiophenes; volatile organic compound	non-polar solvent
n-hexane hexane : An unbranched alkane containing six carbon atoms.	2.72	3	0	alkane; volatile organic compound	neurotoxin; non-polar solvent
1,2-dimethoxyethane 1,2-dimethoxyethane: RN given refers to cpd with specified locants for methoxy moieties. 1,2-dimethoxyethane : A diether that is the 1,2-dimethyl ether of ethane-1,2-diol.	2.46	2	0	diether	non-polar solvent
cyclohexane Cyclohexane: C6H12. cyclohexane : An alicyclic hydrocarbon comprising a ring of six carbon atoms; the cyclic form of hexane, used as a raw material in the manufacture of nylon.	3.25	6	0	cycloalkane; volatile organic compound	non-polar solvent
cyclohexene cyclohexene : A cycloalkene that is cylohexane with a single double bond.	2.06	1	0	cycloalkene
piperidine [no description available]	2.01	1	0	azacycloalkane; piperidines; saturated organic heteromonocyclic parent; secondary amine	base; catalyst; human metabolite; non-polar solvent; plant metabolite; protic solvent; reagent
morpholine [no description available]	2.08	1	0	morpholines; saturated organic heteromonocyclic parent	NMR chemical shift reference compound
diethylene glycol glycol ether : A hydroxyether which contains both an ether and alcohol functional groups. It is one of the most versatile classes of organic solvents which are commonly used in paints, cleaners, adhesives, pharmaceuticals and cosmetics.	2.07	1	0	hydroxyether
n-decyl alcohol n-decyl alcohol: RN given refers to parent cpd. decanol : A fatty alcohol consisting of a hydroxy function at any position of an unbranched saturated chain of ten carbon atoms.. decan-1-ol : A fatty alcohol consisting of a hydroxy function at C-1 of an unbranched saturated chain of ten carbon atoms.	2.04	1	0	decanol; primary alcohol	metabolite; pheromone; protic solvent
tetrafluoroethylene tetrafluoroethylene: RN given refers to parent cpd; structure	2.05	1	0	fluorocarbon
2-aminoanthraquinone [no description available]	2.05	1	0	anthraquinone
benzoin [no description available]	2.07	1	0	benzoins; secondary alpha-hydroxy ketone	EC 3.1.1.1 (carboxylesterase) inhibitor
isoquinoline [no description available]	2.04	1	0	azaarene; isoquinolines; mancude organic heterobicyclic parent; ortho-fused heteroarene
cresidine cresidine: structure	2.05	1	0	methoxybenzenes
2,4-dichlorophenol 2,4-dichlorophenol: RN given refers to unlabeled parent+ cpd; structure. 2,4-dichlorophenol : A dichlorophenol that is phenol carrying chloro substituents at positions 2 and 4.	2.05	1	0	dichlorophenol
triethylamine [no description available]	2.39	2	0	tertiary amine
amiben Amiben: RN given refers to parent cpd	2.05	1	0	chlorobenzoic acid
1-naphthylamine 1-Naphthylamine: A suspected industrial carcinogen (and listed as such by OSHA). Its N-hydroxy metabolite is strongly carcinogenic and mutagenic.. naphthylamine : A primary arylamine that is naphthalene substituted by an amino group at unspecified position.. 1-naphthylamine : A naphthylamine that is naphthalene substituted by an amino group at position 1.	2	1	0	naphthylamine	human xenobiotic metabolite
2,4,5-trimethylaniline 2,4,5-trimethylaniline: RN given refers to parent cpd	2.05	1	0	substituted aniline
n,n-bis(2-hydroxyethyl)glycine N,N-bis(2-hydroxyethyl)glycine: RN given refers to parent cpd. N,N-bis(2-hydroxyethyl)glycine : A bicine that is a Good's buffer substance, pKa = 8.35 at 20 degreeC.	2.02	1	0	bicine
4,4'-thiodianiline 4,4'-thiodianiline: structure	2.05	1	0	substituted aniline
n-(hydroxyethyl)ethylenediaminetriacetic acid N-(hydroxyethyl)ethylenediaminetriacetic acid: RN given refers to parent cpd	2.02	1	0
n-butyl acrylate butyl acrylate : An acrylate ester obtained by the formal condensation of the hydroxy group of butan-1-ol with the carboxy group of acrylic acid.	2.07	1	0	acrylate ester
ethyl acetate ethyl acetate : The acetate ester formed between acetic acid and ethanol.	2.95	4	0	acetate ester; ethyl ester; volatile organic compound	EC 3.4.19.3 (pyroglutamyl-peptidase I) inhibitor; metabolite; polar aprotic solvent; Saccharomyces cerevisiae metabolite
n-heptane Heptanes: Seven-carbon alkanes with the formula C7H16.. heptane : A straight-chain alkane with seven carbon atoms. It has been found in Jeffrey pine (Pinus jeffreyi).	3.12	5	0	alkane; volatile organic compound	non-polar solvent; plant metabolite
isopropyl palmitate isopropyl palmitate : A fatty acid ester obtained by the formal condensation of carboxy group of palmitic acid with propan-2-ol. Metabolite observed in cancer metabolism.	2.04	1	0	fatty acid ester; isopropyl ester	human metabolite
perylene Perylene: A 20-carbon dibenz(de,kl)anthracene that can be viewed as a naphthalene fused to a phenalene or as dinaphthalene. It is used as fluorescent lipid probe in the cytochemistry of membranes and is a polycyclic hydrocarbon pollutant in soil and water. Derivatives may be carcinogenic.. perylene : An ortho- and peri-fused polycyclic arene comprising of five benzene rings that is anthracene in which the d,e and k,l sides are fused to benzene rings.	2.02	1	0	ortho- and peri-fused polycyclic arene; perylenes
cinnoline cinnoline: structure in first source. cinnoline : An azaarene that is the 1,2-diaza analogue of naphthalene. The parent of the class of cinnolines.	2.04	1	0	azaarene; cinnolines; mancude organic heterobicyclic parent; ortho-fused heteroarene
quinazolines Quinazolines: A group of aromatic heterocyclic compounds that contain a bicyclic structure with two fused six-membered aromatic rings, a benzene ring and a pyrimidine ring.. quinazoline : A mancude organic heterobicyclic parent that is naphthalene in which the carbon atoms at positions 1 and 3 have been replaced by nitrogen atoms.. quinazolines : Any organic heterobicyclic compound based on a quinazoline skeleton and its substituted derivatives.	2	1	0	azaarene; mancude organic heterobicyclic parent; ortho-fused heteroarene; quinazolines
acridines Acridines: Compounds that include the structure of acridine.. acridine : A polycyclic heteroarene that is anthracene in which one of the central CH groups is replaced by a nitrogen atom.	2.01	1	0	acridines; mancude organic heterotricyclic parent; polycyclic heteroarene	genotoxin
benzoxazoles 1,3-benzoxazole : A benzoxazole in which the benzene ring is fused to a 1,3-oxazole ring across positions 4 and 5.. benzoxazole : Compounds based on a fused 1,2- or 1,3-oxazole and benzene bicyclic ring skeleton.	2.04	1	0	1,3-benzoxazoles; mancude organic heterobicyclic parent
adamantane Adamantane: A tricyclo bridged hydrocarbon.	2.1	1	0	adamantanes; polycyclic alkane
oxazoles Oxazoles: Five-membered heterocyclic ring structures containing an oxygen in the 1-position and a nitrogen in the 3-position, in distinction from ISOXAZOLES where they are at the 1,2 positions.. 1,3-oxazole : A five-membered monocyclic heteroarene that is an analogue of cyclopentadiene with O in place of CH2 at position 1 and N in place of CH at position 3.. oxazole : An azole based on a five-membered heterocyclic aromatic skeleton containing one N and one O atom.	2.05	1	0	1,3-oxazoles; mancude organic heteromonocyclic parent; monocyclic heteroarene
thiazoles [no description available]	2.76	3	0	1,3-thiazoles; mancude organic heteromonocyclic parent; monocyclic heteroarene
12-crown-4 12-crown-4: structure in first source. 12-crown-4 : A crown ether that is cyclododecane in which the carbon atoms at positions 1, 4, 7 and 10 have been replaced by oxygen atoms.	7.6	1	0	crown ether; saturated organic heteromonocyclic parent
hydrazine diamine : Any polyamine that contains two amino groups.	2.01	1	0	azane; hydrazines	EC 4.3.1.10 (serine-sulfate ammonia-lyase) inhibitor
silicon carbide silicon carbide: fibers used for reinforcement of porcelain crowns; a feldspathic body (gingival) porcelain; used to coat titanium hip prostheses	2.06	1	0	organosilicon compound
2-aminopurine 2-Aminopurine: A purine that is an isomer of ADENINE (6-aminopurine).. aminopurine : Any purine having at least one amino substituent.. 2-aminopurine : The parent compound of the 2-aminopurines, comprising a purine core carrying an amino substituent at the 2-position.	2	1	0	2-aminopurines; nucleobase analogue	antimetabolite
limestone Calcium Carbonate: Carbonic acid calcium salt (CaCO3). An odorless, tasteless powder or crystal that occurs in nature. It is used therapeutically as a phosphate buffer in hemodialysis patients and as a calcium supplement.. calcium carbonate : A calcium salt with formula CCaO3.	2.03	1	0	calcium salt; carbonate salt; inorganic calcium salt; one-carbon compound	antacid; fertilizer; food colouring; food firming agent
sodium carbonate sodium carbonate: used topically for dermatitides, mouthwash, vaginal douche; veterinary use as emergency emetic; RN given refers to carbonic acid, di-Na salt; structure	2.04	1	0	carbonate salt; organic sodium salt
phenylcarbamic acid [no description available]	2.03	1	0	amino acid
4-hydroxyphenylethanol 4-hydroxyphenylethanol: in chest gland secretion of galagos. 2-(4-hydroxyphenyl)ethanol : A phenol substituted at position 4 by a 2-hydroxyethyl group.	2.02	1	0	phenols	anti-arrhythmia drug; antioxidant; cardiovascular drug; fungal metabolite; geroprotector; plant metabolite; protective agent
caprolactone hexano-6-lactone : A epsilon-lactone that is oxepane substituted by an oxo group at position 2.	2.08	1	0	epsilon-lactone
oleanolic acid [no description available]	2.08	1	0	hydroxy monocarboxylic acid; pentacyclic triterpenoid	plant metabolite
chlorobenzilate chlorobenzilate: structure	2.05	1	0	diarylmethane
flavone flavone: RN given refers to unlabeled cpd; structure given in first source. flavone : The simplest member of the class of flavones that consists of 4H-chromen-4-one bearing a phenyl substituent at position 2.	2.04	1	0	flavones	metabolite; nematicide
gluconic acid gluconic acid: zinc gluconate has anti-inflammatory activity; RN given refers to (D)-isomer; all RRs refers to (D)-isomer unless otherwise noted. ketogluconic acid : A gluconic acid that contains a ketonic carbonyl group.. D-gluconic acid : A gluconic acid having D-configuration.	1.96	1	0	gluconic acid	chelator; Penicillium metabolite
copper gluconate Gluconates: Derivatives of gluconic acid (the structural formula HOCH2(CHOH)4COOH), including its salts and esters.	1.96	1	0	organic molecular entity
1,2-dichloroethylene 1,2-dichloroethylene: RN given refers to cpd without isomeric designation	2.25	1	0	chloroethenes
malondialdehyde Malondialdehyde: The dialdehyde of malonic acid.. malonaldehyde : A dialdehyde that is propane substituted by two oxo groups at the terminal carbon atoms respectively. A biomarker of oxidative damage to lipids caused by smoking, it exists in vivo mainly in the enol form.	2.58	2	0	dialdehyde	biomarker
n-hexadecane n-hexadecane: structure. hexadecane : A straight-chain alkane with 16 carbon atoms. It is a component of essential oil isolated from long pepper.	2.04	1	0	long-chain alkane	non-polar solvent; plant metabolite; volatile oil component
neutral red Neutral Red: A vital dye used as an indicator and biological stain. Various adverse effects have been observed in biological systems.. neutral red : A hydrochloride obtained by combining the free base of neutral red with one equivalent of hydrochloric acid. Neutral red acts as a pH indicator, changing from red to yellow between pH 6.8 and 8.0.	1.99	1	0	hydrochloride	acid-base indicator; dye; two-colour indicator
5-nitroacenaphthene [no description available]	2.05	1	0	nitronaphthalene
ferrocin c N-methyl-2-quinolone: structure in first source	2.04	1	0
n,n-dimethylbenzamide [no description available]	2.04	1	0
4-methoxy-3-phenylenediamine 4-methoxy-3-phenylenediamine: RN given refers to parent cpd	1.96	1	0	methoxybenzenes
acetylcysteine N-acetyl-L-cysteine : An N-acetyl-L-amino acid that is the N-acetylated derivative of the natural amino acid L-cysteine.	2.13	1	0	acetylcysteine; L-cysteine derivative; N-acetyl-L-amino acid	antidote to paracetamol poisoning; antiinfective agent; antioxidant; antiviral drug; ferroptosis inhibitor; geroprotector; human metabolite; mucolytic; radical scavenger; vulnerary
ethylene glycol diethyl ether [no description available]	2.01	1	0
1,1,1,2-tetrachloroethane 1,1,1,2-tetrachloroethane: see also record for tetrachloroethane	2.05	1	0	chloroethanes
erythromycin Erythromycin: A bacteriostatic antibiotic macrolide produced by Streptomyces erythreus. Erythromycin A is considered its major active component. In sensitive organisms, it inhibits protein synthesis by binding to 50S ribosomal subunits. This binding process inhibits peptidyl transferase activity and interferes with translocation of amino acids during translation and assembly of proteins.. erythromycin : Any of several wide-spectrum macrolide antibiotics obtained from actinomycete Saccharopolyspora erythraea (formerly known as Streptomyces erythraeus).. erythromycin A : An erythromycin that consists of erythronolide A having 2,6-dideoxy-3-C-methyl-3-O-methyl-alpha-L-ribo-hexopyranosyl and 3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranosyl residues attahced at positions 4 and 6 respectively.	2.03	1	0	cyclic ketone; erythromycin
formal glycol [no description available]	3.16	5	0	cyclic acetal; dioxolane
2-piperidone 2-piperidone: structure given in first source. piperidin-2-one : A delta-lactam that is piperidine which is substituted by an oxo group at position 2.	2	1	0	delta-lactam; piperidones	EC 1.2.1.88 (L-glutamate gamma-semialdehyde dehydrogenase) inhibitor
tetramethoxysilane [no description available]	2.04	1	0
methylnitrosourea Methylnitrosourea: A nitrosourea compound with alkylating, carcinogenic, and mutagenic properties.. N-methyl-N-nitrosourea : A member of the class of N-nitrosoureas that is urea in which one of the nitrogens is substituted by methyl and nitroso groups.	2	1	0	N-nitrosoureas	alkylating agent; carcinogenic agent; mutagen; teratogenic agent
dimethyl methylphosphonate [no description available]	2.01	1	0
triphenylphosphine oxide triphenylphosphine oxide: used in the extraction, separation & spectrophotometric determination of cadmium & mercury in environmental samples. triphenylphosphane oxide : A phosphine oxide in which the substituents on phosphorus are three phenyl groups.	2.04	1	0	phosphine oxide	NMR chemical shift reference compound
acryloyl chloride [no description available]	2.1	1	0
n-methylpyrrolidone 1-methylpyrrolidin-2-one: structure in first source. N-methylpyrrolidin-2-one : A member of the class of pyrrolidine-2-ones that is pyrrolidin-2-one in which the hydrogen attached to the nitrogen is replaced by a methyl group.	2.31	1	0	lactam; N-alkylpyrrolidine; pyrrolidin-2-ones	polar aprotic solvent
4-phenylpyridine [no description available]	7.06	1	0	phenylpyridine
diphenyl sulfoxide diphenyl sulfoxide: electron acceptor for liver aldehyde oxidase	2.04	1	0	sulfoxide
4-(4-nitrobenzyl)pyridine [no description available]	2.1	1	0
n-nitrosodiethanolamine [no description available]	1.96	1	0	nitroso compound
4-acetylpyridine [no description available]	2.04	1	0
methyl phenyl sulfoxide (methylsulfinyl)benzene : A sulfoxide resulting from the formal oxidation of the sulfur atom of thioanisole.	2.04	1	0	benzenes; sulfoxide
durapatite Durapatite: The mineral component of bones and teeth; it has been used therapeutically as a prosthetic aid and in the prevention and treatment of osteoporosis.. hydroxylapatite : A phosphate mineral with the formula Ca5(PO4)3(OH).	3.26	6	0
potassium hydroxide potassium hydroxide: RN given refers to cpd with MF of K-OH	2.07	1	0	alkali metal hydroxide
sodium hydroxide Sodium Hydroxide: A highly caustic substance that is used to neutralize acids and make sodium salts. (From Merck Index, 11th ed)	2.89	4	0	alkali metal hydroxide
zinc oxide Zinc Oxide: A mild astringent and topical protectant with some antiseptic action. It is also used in bandages, pastes, ointments, dental cements, and as a sunblock.	6.99	1	0	zinc molecular entity
hydrofluoric acid Hydrofluoric Acid: Hydrofluoric acid. A solution of hydrogen fluoride in water. It is a colorless fuming liquid which can cause painful burns.. hydrogen fluoride : A diatomic molecule containing covalently bonded hydrogen and fluorine atoms.. organofluorine compound : An organofluorine compound is a compound containing at least one carbon-fluorine bond.	2.11	1	0	hydrogen halide; mononuclear parent hydride	NMR chemical shift reference compound
d-alpha tocopherol Vitamin E: A generic descriptor for all TOCOPHEROLS and TOCOTRIENOLS that exhibit ALPHA-TOCOPHEROL activity. By virtue of the phenolic hydrogen on the 2H-1-benzopyran-6-ol nucleus, these compounds exhibit varying degree of antioxidant activity, depending on the site and number of methyl groups and the type of ISOPRENOIDS.. tocopherol : A collective name for a group of closely related lipids that contain a chroman-6-ol nucleus substituted at position 2 by a methyl group and by a saturated hydrocarbon chain consisting of three isoprenoid units. They are designated as alpha-, beta-, gamma-, and delta-tocopherol depending on the number and position of additional methyl substituents on the aromatic ring. Tocopherols occur in vegetable oils and vegetable oil products, almost exclusively with R,R,R configuration. Tocotrienols differ from tocopherols only in having three double bonds in the hydrocarbon chain.. vitamin E : Any member of a group of fat-soluble chromanols that exhibit biological activity against vitamin E deficiency. The vitamers in this class consists of a chroman-6-ol core which is substituted at position 2 by a methyl group and (also at position 2) either a saturated or a triply-unsaturated hydrocarbon chain consisting of three isoprenoid units. The major function of vitamin E is to act as a natural antioxidant by scavenging free radicals and molecular oxygen.. (R,R,R)-alpha-tocopherol : An alpha-tocopherol that has R,R,R configuration. The naturally occurring stereoisomer of alpha-tocopherol, it is found particularly in sunflower and olive oils.	2	1	0	alpha-tocopherol	algal metabolite; antiatherogenic agent; anticoagulant; antioxidant; antiviral agent; EC 2.7.11.13 (protein kinase C) inhibitor; immunomodulator; micronutrient; nutraceutical; plant metabolite
pseudouridine [no description available]	2.07	1	0	pseudouridines	fundamental metabolite
isonicotinamide isonicotinamide : A pyridinecarboxamide that is the monocarboxylic acid amide derivative of isonicotinic acid.	1.94	1	0	pyridinecarboxamide
methyl tert-butyl ether methyl tert-butyl ether: used to dissolve gallstones; gasoline additive. methyl tert-butyl ether : An ether having methyl and tert-butyl as the two alkyl components.	4.06	4	0	ether	fuel additive; metabolite; non-polar solvent
bromoxynil bromoxynil: RN given refers to parent cpd; structure. 3,5-dibromo-4-hydroxybenzonitrile : A dibromobenzene that is 2,6-dibromophenol substituted by a cyano group at position 4.	2.02	1	0	dibromobenzene; hydroxynitrile; phenols	environmental contaminant; herbicide; xenobiotic
2,3,7,8-tetrachlorodibenzodioxine Tetrachlorodibenzodioxin: A mixture of isomers.	2.05	1	0	polychlorinated dibenzodioxine
nitrofen nitrofen: structure	2.05	1	0	organic molecular entity	EC 1.3.3.4 (protoporphyrinogen oxidase) inhibitor; herbicide
ethyldimethylaminopropyl carbodiimide Ethyldimethylaminopropyl Carbodiimide: Carbodiimide cross-linking reagent.	2.02	1	0
meldrum's acid Meldrum's acid: structure given in first source	2.1	1	0
1,5-naphthalenediamine 1,5-diaminonaphthalene: structure in first source. naphthalene-1,5-diamine : A naphthalenediamine compound having amino substituents in the 1- and 5-positions.	2.05	1	0	naphthalenediamine	carcinogenic agent
fluorescein Fluorescein: A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium such as the aqueous humor.. fluorescein (lactone form) : A xanthene dye that is highly fluorescent, detectable even when present in minute quantities. Used forensically to detect traces of blood, in analytical chemistry as an indicator in silver nitrate titrations and in microscopy.	2	1	0	2-benzofurans; gamma-lactone; organic heteropentacyclic compound; oxaspiro compound; polyphenol; xanthene dye	fluorescent dye; radioopaque medium
1-methylpyrene [no description available]	2.07	1	0	pyrenes
n-methylamino-2-nitro-4-n',n'-bis(2-hydroxyethyl)aminobenzene N-methylamino-2-nitro-4-N',N'-bis(2-hydroxyethyl)aminobenzene: structure	2.05	1	0	C-nitro compound
mannose mannopyranose : The pyranose form of mannose.	2.02	1	0	D-aldohexose; D-mannose; mannopyranose	metabolite
chlorophacinone chlorophacinone: structure	2.05	1	0	beta-triketone; diarylmethane
carbonates Carbonates: Salts or ions of the theoretical carbonic acid, containing the radical CO2(3-). Carbonates are readily decomposed by acids. The carbonates of the alkali metals are water-soluble; all others are insoluble. (From Grant & Hackh's Chemical Dictionary, 5th ed). carbonates : Organooxygen compounds that are salts or esters of carbonic acid, H2CO3.	2.44	2	0	carbon oxoanion
n-methylaspartate N-Methylaspartate: An amino acid that, as the D-isomer, is the defining agonist for the NMDA receptor subtype of glutamate receptors (RECEPTORS, NMDA).. N-methyl-D-aspartic acid : An aspartic acid derivative having an N-methyl substituent and D-configuration.	2.05	1	0	amino dicarboxylic acid; D-alpha-amino acid; D-aspartic acid derivative; secondary amino compound	neurotransmitter agent
manganese Manganese: A trace element with atomic symbol Mn, atomic number 25, and atomic weight 54.94. It is concentrated in cell mitochondria, mostly in the pituitary gland, liver, pancreas, kidney, and bone, influences the synthesis of mucopolysaccharides, stimulates hepatic synthesis of cholesterol and fatty acids, and is a cofactor in many enzymes, including arginase and alkaline phosphatase in the liver. (From AMA Drug Evaluations Annual 1992, p2035). manganese(4+) : A manganese cation that is monoatomic and has a formal charge of +4.	1.97	1	0	elemental manganese; manganese group element atom	Escherichia coli metabolite; micronutrient
mercury Mercury: A silver metallic element that exists as a liquid at room temperature. It has the atomic symbol Hg (from hydrargyrum, liquid silver), atomic number 80, and atomic weight 200.59. Mercury is used in many industrial applications and its salts have been employed therapeutically as purgatives, antisyphilitics, disinfectants, and astringents. It can be absorbed through the skin and mucous membranes which leads to MERCURY POISONING. Because of its toxicity, the clinical use of mercury and mercurials is diminishing.. mercury(0) : Elemental mercury of oxidation state zero.	2.68	3	0	elemental mercury; zinc group element atom	neurotoxin
palladium Palladium: A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.. palladium : Chemical element (nickel group element atom) with atomic number 46.	8.44	7	0	metal allergen; nickel group element atom; platinum group metal atom
rhenium Rhenium: A metal, atomic number 75, atomic weight 186.207, symbol Re.	2.05	1	0	manganese group element atom
ruthenium Ruthenium: A hard, brittle, grayish-white rare earth metal with an atomic symbol Ru, atomic number 44, and atomic weight 101.07. It is used as a catalyst and hardener for PLATINUM and PALLADIUM.	2.02	1	0	iron group element atom; platinum group metal atom
samarium Samarium: An element of the rare earth family of metals. It has the atomic symbol Sm, atomic number 62, and atomic weight 150.36. The oxide is used in the control rods of some nuclear reactors.	2.11	1	0	f-block element atom; lanthanoid atom
titanium Titanium: A dark-gray, metallic element of widespread distribution but occurring in small amounts with atomic number, 22, atomic weight, 47.867 and symbol, Ti; specific gravity, 4.5; used for fixation of fractures.	3.15	5	0	titanium group element atom
cadmium Cadmium: An element with atomic symbol Cd, atomic number 48, and atomic weight 112.41. It is a metal and ingestion will lead to CADMIUM POISONING.. elemental cadmium : An element in the zinc group of the periodic table with atomic number 48, atomic mass 112, M.P. 321degreeC, and B.P. 765degreeC). An odourless, tasteless, and highly poisonous soft, ductile, lustrous metal with electropositive properties. It has eight stable isotopes: (106)Cd, (108)Cd,(110)Cd, (111)Cd, (112)Cd, (113)Cd, (114)Cd and (116)Cd, with (112)Cd and (114)Cd being the most common.	2.72	3	0	cadmium molecular entity; zinc group element atom
chromium Chromium: A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.. chromium ion : An chromium atom having a net electric charge.. chromium atom : A chromium group element atom that has atomic number 24.	7.25	1	0	chromium group element atom; metal allergen	micronutrient
europium Europium: An element of the rare earth family of metals. It has the atomic symbol Eu, atomic number 63, and atomic weight 152. Europium is used in the form of its salts as coatings for cathode ray tubes and in the form of its organic derivatives as shift reagents in NMR spectroscopy.	2.17	1	0	f-block element atom; lanthanoid atom
gold Gold: A yellow metallic element with the atomic symbol Au, atomic number 79, and atomic weight 197. It is used in jewelry, goldplating of other metals, as currency, and in dental restoration. Many of its clinical applications, such as ANTIRHEUMATIC AGENTS, are in the form of its salts.	2.44	2	0	copper group element atom; elemental gold
uranium Uranium: A radioactive element of the actinide series of metals. It has an atomic symbol U, atomic number 92, and atomic weight 238.03. U-235 is used as the fissionable fuel in nuclear weapons and as fuel in nuclear power reactors.	2.04	1	0	actinoid atom; f-block element atom; monoatomic uranium
phosphoric acid, trisodium salt [no description available]	2.06	1	0	sodium phosphate
sodium nitrate sodium nitrate : The inorganic nitrate salt of sodium.	2.02	1	0	inorganic nitrate salt; inorganic sodium salt	fertilizer; NMR chemical shift reference compound
hypochlorous acid Hypochlorous Acid: An oxyacid of chlorine (HClO) containing monovalent chlorine that acts as an oxidizing or reducing agent.. hypochlorous acid : A chlorine oxoacid with formula HOCl; a weak, unstable acid, it is the active form of chlorine in water.	2.08	1	0	chlorine oxoacid; reactive oxygen species	EC 2.5.1.18 (glutathione transferase) inhibitor; EC 3.1.1.7 (acetylcholinesterase) inhibitor; human metabolite
bromine Bromine: A halogen with the atomic symbol Br, atomic number 35, and atomic weight 79.904. It is a volatile reddish-brown liquid that gives off suffocating vapors, is corrosive to the skin, and may cause severe gastroenteritis if ingested.	7.05	1	0	diatomic bromine
tricalcium phosphate tricalcium phosphate: a form of tricalcium phosphate used as bioceramic bone replacement material; see also records for alpha-tricalcium phosphate, beta-tricalcium phosphate, calcium phosphate; apatitic tricalcium phosphate Ca9(HPO4)(PO4)5(OH) is the calcium orthophosphate leading to beta tricalcium phosphate Ca3(PO4)2 (b-TCP). calcium phosphate : A calcium salt composed of calcium and phosphate/diphosphate ions; present in milk and used for the mineralisation of calcified tissues.	2.4	2	0	calcium phosphate
silver nitrate Silver Nitrate: A silver salt with powerful germicidal activity. It has been used topically to prevent OPHTHALMIA NEONATORUM.	1.96	1	0	inorganic nitrate salt; silver salt	astringent
deuterium Deuterium: The stable isotope of hydrogen. It has one neutron and one proton in the nucleus.	3.27	6	0	dihydrogen
fluorine Fluorine: A nonmetallic, diatomic gas that is a trace element and member of the halogen family. It is used in dentistry as fluoride (FLUORIDES) to prevent dental caries.	2.08	1	0	diatomic fluorine; gas molecular entity	NMR chemical shift reference compound
chlorine Chlorine: An element with atomic symbol Cl, atomic number 17, and atomic weight 35, and member of the halogen family.	2.39	2	0	diatomic chlorine; gas molecular entity	bleaching agent
nitrous acid Nitrous Acid: Nitrous acid (HNO2). A weak acid that exists only in solution. It can form water-soluble nitrites and stable esters. (From Merck Index, 11th ed)	2	1	0	nitrogen oxoacid
deuterium oxide Deuterium Oxide: The isotopic compound of hydrogen of mass 2 (deuterium) with oxygen. (From Grant & Hackh's Chemical Dictionary, 5th ed) It is used to study mechanisms and rates of chemical or nuclear reactions, as well as biological processes.	2.4	2	0	deuterated compound; water	NMR solvent
ozone Ozone: The unstable triatomic form of oxygen, O3. It is a powerful oxidant that is produced for various chemical and industrial uses. Its production is also catalyzed in the ATMOSPHERE by ULTRAVIOLET RAY irradiation of oxygen or other ozone precursors such as VOLATILE ORGANIC COMPOUNDS and NITROGEN OXIDES. About 90% of the ozone in the atmosphere exists in the stratosphere (STRATOSPHERIC OZONE).. ozone : An elemental molecule with formula O3. An explosive, pale blue gas (b.p. -112degreeC) that has a characteristic, pungent odour, it is continuously produced in the upper atmosphere by the action of solar ultraviolet radiation on atmospheric oxygen. It is an antimicrobial agent used in the production of bottled water, as well as in the treatment of meat, poultry and other foodstuffs.	4.13	14	0	elemental molecule; gas molecular entity; reactive oxygen species; triatomic oxygen	antiseptic drug; disinfectant; electrophilic reagent; greenhouse gas; mutagen; oxidising agent; tracer
cadmium chloride Cadmium Chloride: A cadmium halide in the form of colorless crystals, soluble in water, methanol, and ethanol. It is used in photography, in dyeing, and calico printing, and as a solution to precipitate sulfides. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed). cadmium dichloride : A cadmium coordination entity in which cadmium(2+) and Cl(-) ions are present in the ratio 2:1. Although considered to be ionic, it has considerable covalent character to its bonding.	2.07	1	0	cadmium coordination entity
beta-hydroxyethoxyacetic acid beta-hydroxyethoxyacetic acid: metabolite of both dioxane and diethylene glycol	2.46	2	0
titanium dioxide titanium dioxide: used medically as protectant against externally caused irritation & sunlight; high concentrations of dust may cause irritation to respiratory tract; RN given refers to titanium oxide (TiO2); structure. titanium dioxide : A titanium oxide with the formula TiO2. A naturally occurring oxide sourced from ilmenite, rutile and anatase, it has a wide range of applications.	2.97	4	0	titanium oxides	food colouring
tiletamine hydrochloride Cyclohexanones: Cyclohexane ring substituted by one or more ketones in any position.. cyclohexanones : Any alicyclic ketone based on a cyclohexane skeleton and its substituted derivatives thereof.	2.47	2	0
2,3-dihydroxypyridine 2,3-dihydroxypyridine: affects thyroid function. pyridine-2,3-diol : A dihydroxypyridine in which the two hydroxy groups are located at positions 2 and 3.	2.01	1	0	dihydroxypyridine
fluorides [no description available]	2.06	1	0	halide anion; monoatomic fluorine
18-crown-6 18-crown-6 : A crown ether that is cyclooctadecane in which the carbon atoms at positions 1, 4, 7, 10, 13 and 16 have been replaced by oxygen atoms.	7.6	1	0	crown ether; saturated organic heteromonocyclic parent	phase-transfer catalyst
tert-butyldimethylsilyl chloride tert-butyldimethylsilyl chloride: structure in first source. tert-butyldimethylsilyl chloride : A silyl chloride consisting of a central silicon atom covalently bound to one chloro, one tert-butyl and two methyl groups. tert-Butyldimethylsilyl chloride is a derivatisation agent used in gas chromatography/mass spectrometry applications.	2.05	1	0	silyl chloride	chromatographic reagent
chromium chromium hexavalent ion: a human respiratory carcinogen	7.25	1	0	chromium cation; monoatomic hexacation
iodine [no description available]	2.11	1	0	halide anion; monoatomic iodine	human metabolite
fenitrothion Fenitrothion: An organothiophosphate cholinesterase inhibitor that is used as an insecticide.. fenitrothion : An organic thiophosphate that is O,O-dimethyl O-phenyl phosphorothioate substituted by a methyl group at position 3 and a nitro group at position 4.	2.06	1	0	C-nitro compound; organic thiophosphate	acaricide; agrochemical; EC 3.1.1.7 (acetylcholinesterase) inhibitor; EC 3.1.1.8 (cholinesterase) inhibitor; insecticide
1,2-diphenylhydrazine [no description available]	2.05	1	0
phenyl acetate phenyl acetate: The ester formed between phenol and acetic acid. Don't confuse with phenylacetic acid derivatives listed under PHENYLACETATES.. phenyl acetate : An acetate ester obtained by the formal condensation of phenol with acetic acid.	3.73	10	0	benzenes; phenyl acetates
methylformamide N-methylformamide : A member of the class of formamides having a N-methyl substituent.	2.6	1	0	formamides
chloroprene Chloroprene: Toxic, possibly carcinogenic, monomer of neoprene, a synthetic rubber; causes damage to skin, lungs, CNS, kidneys, liver, blood cells and fetuses. Synonym: 2-chlorobutadiene.	2.05	1	0	chloroolefin
tetrachloroethylene Tetrachloroethylene: A chlorinated hydrocarbon used as an industrial solvent and cooling liquid in electrical transformers. It is a potential carcinogen.	9.01	4	0	chlorocarbon; chloroethenes	nephrotoxic agent
dimethylacetamide hallucinogen : Drugs capable of inducing illusions, hallucinations, delusions, paranoid ideations and other alterations of mood and thinking.. N,N-dimethylacetamide : A member of the class of acetamides that is acetamide in which the hydrogens attached to the N atom have been replaced by two methyl groups respectively. Metabolite observed in cancer metabolism.	2.74	3	0	acetamides; monocarboxylic acid amide	human metabolite
pyrene pyrene: structure in Merck Index, 9th ed, #7746. pyrene : An ortho- and peri-fused polycyclic arene consisting of four fused benzene rings, resulting in a flat aromatic system.	2.48	2	0	ortho- and peri-fused polycyclic arene	fluorescent probe; persistent organic pollutant
alkenes [no description available]	2.73	3	0
glutamic acid Glutamic Acid: A non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM.. glutamic acid : An alpha-amino acid that is glutaric acid bearing a single amino substituent at position 2.	7.43	2	0	glutamic acid; glutamine family amino acid; L-alpha-amino acid; proteinogenic amino acid	Escherichia coli metabolite; ferroptosis inducer; micronutrient; mouse metabolite; neurotransmitter; nutraceutical
azides Azides: Organic or inorganic compounds that contain the -N3 group.. azide : Any nitrogen molecular entity containing the group -N3.	2.51	2	0	pseudohalide anion	mitochondrial respiratory-chain inhibitor
acetylgalactosamine Acetylgalactosamine: The N-acetyl derivative of galactosamine.	2.05	1	0	N-acetyl-D-hexosamine; N-acetylgalactosamine	Escherichia coli metabolite; human metabolite; mouse metabolite
15-crown-5 15-crown-5 : A saturated organic heteromonocyclic parent that is cyclopentadecane in which the carbon atoms at positions 1, 4, 7, 10 and 13 have been replaced by oxygen atoms to give a crown ether.	7.6	1	0	crown ether; saturated organic heteromonocyclic parent
7,8-dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide 7,8-Dihydro-7,8-dihydroxybenzo(a)pyrene 9,10-oxide: 7,8,8a,9a-Tetrahydrobenzo(10,11)chryseno (3,4-b)oxirene-7,8-diol. A benzopyrene derivative with carcinogenic and mutagenic activity.	2.42	2	0	epoxide	intercalator
salmeterol xinafoate Salmeterol Xinafoate: A selective ADRENERGIC BETA-2 RECEPTOR agonist that functions as a BRONCHODILATOR when administered by inhalation. It is used to manage the symptoms of ASTHMA and CHRONIC OBSTRUCTIVE PULMONARY DISEASE.	3.1	1	0	naphthoic acid
fura-2 Fura-2: A fluorescent calcium chelating agent which is used to study intracellular calcium in tissues.	2	1	0
finasteride Finasteride: An orally active 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE inhibitor. It is used as a surgical alternative for treatment of benign PROSTATIC HYPERPLASIA.. finasteride : An aza-steroid that is a synthetic drug for the treatment of benign prostatic hyperplasia.	2.03	1	0	3-oxo steroid; aza-steroid; delta-lactam	androgen antagonist; antihyperplasia drug; EC 1.3.1.22 [3-oxo-5alpha-steroid 4-dehydrogenase (NADP(+))] inhibitor
adenosine quinquefolan B: isolated from roots of Panax quinquefolium L.; RN not in Chemline 10/87; RN from Toxlit	2.43	2	0	adenosines; purines D-ribonucleoside	analgesic; anti-arrhythmia drug; fundamental metabolite; human metabolite; vasodilator agent
nitroaniline nitroaniline: RN given refers to cpd with unspecified locant for nitro moiety. nitroaniline : A substituted aniline that carries one or more nitro groups.	2.73	3	0
sudan black b Sudan black B : A member of the class of perimidines that is 2,2-dimethyl-2,3-dihydro-1H-perimidine carrying a [4-(phenyldiazenyl)naphthalen-1-yl]diazenyl substituent at position 6. A fat-soluble dye predominantly used for demonstrating triglycerides in frozen sections and for staining of protein bound lipids in paraffin sections.	1.93	1	0	azobenzenes; bis(azo) compound; perimidines	histological dye
acridine orange Acridine Orange: A cationic cytochemical stain specific for cell nuclei, especially DNA. It is used as a supravital stain and in fluorescence cytochemistry. It may cause mutations in microorganisms.. acridine orange : Fluorescent dye useful for cell cycle determination. It is cell-permeable, and interacts with DNA and RNA by intercalation or electrostatic attractions respectively.. acridine orange free base : A member of the class of aminoacridines that is acridine carrying two dimethylamino substituents at positions 3 and 6. The hydrochloride salt is the fluorescent dye 'acridine orange', used for cell cycle determination.	1.98	1	0	aminoacridines; aromatic amine; tertiary amino compound	fluorochrome; histological dye
trifluoromethanesulfonic acid trifluoromethanesulfonic acid: deblocking reagent for peptide synthesis; RN given refers to parent cpd. triflic acid : A one-carbon compound that is methanesulfonic acid in which the hydrogens attached to the methyl carbon have been replaced by fluorines.	2.03	1	0	one-carbon compound; perfluoroalkanesulfonic acid
sodium persulfate sodium persulfate: RN given refers to peroxydisulfuric acid, di-Na salt	2.15	1	0
norharman norharman: RN given refers to parent cpd. beta-carboline : The parent compound of the beta-carbolines, a tricyclic structure comprising an indole ring system ortho- fused to C-3 and C-4 of a pyridine ring.	2.02	1	0	beta-carbolines; mancude organic heterotricyclic parent	fungal metabolite; marine metabolite
thiazolyl blue thiazolyl blue: RN & II refers to bromide. 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide : The bromide salt of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium.	2.11	1	0	organic bromide salt	colorimetric reagent; dye
chloranilic acid chloranilic acid: structure	1.99	1	0
divinyl benzene [no description available]	2.08	1	0	styrenes
anthranil 2,1-benzoxazole : A benzoxazole in which the benzene ring is fused to a 1,2-oxazole ring across positions 3 and 4.	2.04	1	0	2,1-benzoxazoles; mancude organic heterobicyclic parent
triazoles Triazoles: Heterocyclic compounds containing a five-membered ring with two carbon atoms and three nitrogen atoms with the molecular formula C2H3N3.. triazoles : An azole in which the five-membered heterocyclic aromatic skeleton contains three N atoms and two C atoms.	2.45	2	0	1,2,3-triazole
nebularine nebularine: structure. nebularine : A purine ribonucleoside that is 9H-purine attached to a beta-D-ribofuranosyl residue at position 9 via a glycosidic (N-glycosyl) linkage.	1.98	1	0	purine ribonucleoside; purines D-ribonucleoside	fungal metabolite
trimethyl phosphine [no description available]	2.25	1	0	tertiary phosphine
glycine methyl ester glycine methyl ester: RN given refers to parent cpd. methyl glycinate : A glycinyl ester obtained by the formal condensation of the carboxy group of glycine with methanol.	1.95	1	0	glycinyl ester	metabolite
4-methoxybenzonitrile 4-methoxybenzonitrile: RN given refers to parent cpd	2.04	1	0
trichlorosucrose trichlorosucrose: sweetness intensity roughly 600 times that of sucrose and is nonnutritive and noncaloric; largely unabsorbed in the gastrointestinal tract. sucralose : A disaccharide derivative consisting of 4-chloro-4-deoxy-alpha-D-galactopyranose and 1,6-dichloro-1,6-dideoxy-beta-D-fructofuranose units linked by a glycosidic bond.	2.41	1	0	disaccharide derivative; organochlorine compound	environmental contaminant; sweetening agent; xenobiotic
voriconazole Voriconazole: A triazole antifungal agent that specifically inhibits STEROL 14-ALPHA-DEMETHYLASE and CYTOCHROME P-450 CYP3A.. voriconazole : A triazole-based antifungal agent used for the treatment of esophageal candidiasis, invasive pulmonary aspergillosis, and serious fungal infections caused by Scedosporium apiospermum and Fusarium spp. It is an inhibitor of cytochrome P450 2C9 (CYP2C9) and CYP3A4.	2.07	1	0	conazole antifungal drug; difluorobenzene; pyrimidines; tertiary alcohol; triazole antifungal drug	P450 inhibitor
uroporphyrin i uroporphyrin I: RN given refers to parent cpd	1.93	1	0
diphenic anhydride diphenic anhydride: structure given in first source	2.06	1	0
2,6-difluoropyridine [no description available]	2.04	1	0
oxazolidin-2-one Oxazolidinones: Derivatives of oxazolidin-2-one. They represent an important class of synthetic antibiotic agents.. oxazolidin-2-one : An oxazolidinone that is 1,3-oxazolidine with an oxo substituent at position 2.. oxazolidinone : An oxazolidine containing one or more oxo groups.	2.05	1	0	carbamate ester; oxazolidinone	metabolite
4-nitrophenyl butyrate p-nitrophenyl butyrate : A butyrate ester resulting from the formal condensation of the hydroxy group of 4-nitrophenol with the carboxy group of butyric acid.	2.21	1	0	butyrate ester; C-nitro compound
1-benzylimidazole 1-benzylimidazole: inhibits human thromboxane synthetase	2.04	1	0
ribose-5-phosphate ribose-5-phosphate: RN given refers to cpd without isomeric designation	2.07	1	0	D-ribose 5-phosphate
tes 2-((1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)amino)ethanesulfonic acid: structure in first source. N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid : A Good's buffer substance, pKa = 7.5 at 20 degreeC.	2.08	1	0	amino sulfonic acid; ethanolamines; TES
4-nitrophenyl-n-acetyl-beta-d-galactosaminide 4-nitrophenyl-2-acetamido-2-deoxygalactopyranoside: RN given refers to (beta)-anomer. 4-nitrophenyl N-acetyl-beta-D-galactosaminide : An N-acetyl-beta-D-galactosaminide having a 4-nitrophenyl substituent at the anomeric position.	2.05	1	0	N-acetyl-beta-D-galactosaminide
6-chloroindole [no description available]	2.04	1	0	indoles
2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide: thiation agent; structure in first source	2.03	1	0
fibrinogen Fibrinogen: Plasma glycoprotein clotted by thrombin, composed of a dimer of three non-identical pairs of polypeptide chains (alpha, beta, gamma) held together by disulfide bonds. Fibrinogen clotting is a sol-gel change involving complex molecular arrangements: whereas fibrinogen is cleaved by thrombin to form polypeptides A and B, the proteolytic action of other enzymes yields different fibrinogen degradation products.. D-iditol : The D-enantiomer of iditol.	2.41	2	0	iditol	fungal metabolite
n-acetyltryptophanamide [no description available]	2.02	1	0	acetamides; L-tryptophan derivative; primary carboxamide; secondary carboxamide
pyrimidine dimers Pyrimidine Dimers: Dimers found in DNA chains damaged by ULTRAVIOLET RAYS. They consist of two adjacent PYRIMIDINE NUCLEOTIDES, usually THYMINE nucleotides, in which the pyrimidine residues are covalently joined by a cyclobutane ring. These dimers block DNA REPLICATION.	2.11	1	0
glucuronic acid Glucuronic Acid: A sugar acid formed by the oxidation of the C-6 carbon of GLUCOSE. In addition to being a key intermediate metabolite of the uronic acid pathway, glucuronic acid also plays a role in the detoxification of certain drugs and toxins by conjugating with them to form GLUCURONIDES.. D-glucuronic acid : The D-enantiomer of glucuronic acid.. D-glucopyranuronic acid : A D-glucuronic acid in cyclic pyranose form.	2.5	2	0	D-glucuronic acid	algal metabolite
nitrophenylgalactosides Nitrophenylgalactosides: Includes ortho-, meta-, and para-nitrophenylgalactosides.. 2-nitrophenyl beta-D-galactoside : A beta-D-galactoside having a 2-nitrophenyl substituent at the anomeric position.	1.98	1	0	beta-D-galactoside; C-nitro compound	chromogenic compound
cobalt Cobalt: A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. Deficiency in animals leads to anemia; its excess in humans can lead to erythrocytosis.. cobalt(1+) : A monovalent inorganic cation obtained from cobalt.. cobalt atom : A cobalt group element atom that has atomic number 27.	2.69	3	0	cobalt group element atom; metal allergen	micronutrient
fluo-3 Fluo-3: fluorescent Ca(2+) indicator; permits continuous monitoring of Ca without interference with use of UV-sensitive caged compounds	2	1	0	xanthene dye	fluorochrome
beta-carboline-3-carboxylic acid methyl ester beta-carboline-3-carboxylic acid methyl ester: structure given in first source	2.01	1	0	beta-carbolines
dityrosine dityrosine: o,o'-biphenol analog of tyrosine; isolated from insoluble protein of human cataractous lenses; structure. dityrosine : A biphenyl compound comprising two tyrosine residues linked at carbon-3 of their benzene rings.	2	1	0	biphenyls; non-proteinogenic alpha-amino acid; tyrosine derivative	biomarker
phenylalanyl-prolyl-arginine-chloromethyl ketone phenylalanyl-prolyl-arginine-chloromethyl ketone: do not confuse with Pro-Phe-Arg-CH2-Cl or with Phe-Phe-Arg-CH2-Cl, both sometimes also referred to as PPACK	1.98	1	0
dimethyldioxirane dimethyldioxirane: structure given in first source; powerful oxidizing agent	2.03	1	0
paliperidone 3-{2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl}-9-hydroxy-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one : A member of the class of pyridopyrimidines that is 9-hydroxy-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one carrying an additional 2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl group at position 2.. paliperidone : A racemate comprising equimolar amounts of (R)- and (S)-paliperidone. Paliperidone is the primary active metabolite of the older antipsychotic risperidone and is used for treatment of schizophrenia.	2.04	1	0	1,2-benzoxazoles; heteroarylpiperidine; organofluorine compound; pyridopyrimidine; secondary alcohol
sr 33557 fantofarone: structure given in first source	1.98	1	0
caprylates Caprylates: Derivatives of caprylic acid. Included under this heading are a broad variety of acid forms, salts, esters, and amides that contain a carboxy terminated eight carbon aliphatic structure.. octanoate : A straight-chain saturated fatty acid anion that is the conjugate base of octanoic acid (caprylic acid); believed to block adipogenesis.	2.05	1	0	fatty acid anion 8:0; straight-chain saturated fatty acid anion	human metabolite; Saccharomyces cerevisiae metabolite
emeriamine emeriamine: derived from fungal metabolite emericedin; structure given in first source	1.97	1	0
2-aminoacridone [no description available]	2.03	1	0	acridines
sulforhodamine 101 [no description available]	2	1	0	organic heteroheptacyclic compound	fluorochrome
phenoxy radical phenoxy radical : An organic radical generated from phenol.	2.04	1	0	organic radical
carbene carbene: electrically neutral species H2C: and its derivatives, in which the carbon is covalently bonded to two univalent groups of any kind or a divalent group and bears two nonbonding electrons; carbene is the name of the parent hydride :CH2 ; hence, the name dichlorocarbene for :CCl2. However, names for acyclic and cyclic hydrocarbons containing one or more divalent carbon atoms are derived from the name of the corresponding all-4-hydrocarbon using the suffix -ylidene; methylene carbene also available. carbene : The electrically neutral species H2C(2.) and its derivatives, in which the carbon is covalently bonded to two univalent groups of any kind or a divalent group and bears two nonbonding electrons, which may be spin-paired (singlet state) or spin-non-paired (triplet state).	2.01	1	0	carbene; methanediyl
peroxynitrous acid Peroxynitrous Acid: A potent oxidant synthesized by the cell during its normal metabolism. Peroxynitrite is formed from the reaction of two free radicals, NITRIC OXIDE and the superoxide anion (SUPEROXIDES).	2	1	0	nitrogen oxoacid
perchlorate perchlorate: the explosive component of rocket fuel; an environmental contaminant that disrupts THYROID HORMONES. perchlorate : A monovalent inorganic anion obtained by deprotonation of perchloric acid.	3.21	1	0	chlorine oxoanion; monovalent inorganic anion
polytrimethylene carbonate trimethylene carbonate: structure in first source	2.03	1	0
2-(2-(5-carboxy)oxazole)-5-hydroxy-6-aminobenzofuran-n,n,o-triacetic acid 2-(2-(5-carboxy)oxazole)-5-hydroxy-6-aminobenzofuran-N,N,O-triacetic acid: structure given in first source	2	1	0
benzoylarginine ethyl ester benzoylarginine ethyl ester: used as substrate for trypsin; RN given refers to parent cpd	1.93	1	0
l 663581 L 663581: structure given in first source; partial agonist at the benzodiazepine receptor	2.04	1	0
aspartame [no description available]	1.98	1	0	carboxylic acid; dipeptide zwitterion; dipeptide; methyl ester	apoptosis inhibitor; EC 3.1.3.1 (alkaline phosphatase) inhibitor; environmental contaminant; micronutrient; nutraceutical; sweetening agent; xenobiotic
quinone methide quinone methide: intermediate in eumelanin biosynthesis; structure given in first source. quinomethane : A methylidenecyclohexadienone, formally derived from a benzoquinone by replacement of one of the quinone oxygens by a methylidene group.	7.41	1	0	quinomethane
dithiane dithiane: structure in first source	2.07	1	0	dithiane
cyclohexadienone cyclohexadienone: structure in first source	7.41	1	0
sperm motility inhibitor 2 [no description available]	2.11	1	0
hydroxyl radical Hydroxyl Radical: The univalent radical OH. Hydroxyl radical is a potent oxidizing agent.	3.69	9	0	oxygen hydride; oxygen radical; reactive oxygen species
peroxymonosulfate peroxymonosulfate: oxidizing agent in prevention of tooth discoloration; RN given refers to ion(2-)	2.82	2	0	sulfur oxide; sulfur oxoanion
fenton's reagent Fenton's reagent: used for oxidizing sugars & alcohols	3.77	10	0
asenapine asenapine : A racemate consisting of equal amounts of (R,R)- and (S,S)-asenapine. Used as its maleate salt for the acute treatment of schizophrenia and acute treatment of manic or mixed episodes associated with bipolar I disorder with or without psychotic features.. (S,S)-asenapine : A 5-chloro-2-methyl-2,3,3a,12b-tetrahydrodibenzo[2,3:6,7]oxepino[4,5-c]pyrrole in which both of the stereocentres have S configuration.	2.04	1	0	5-chloro-2-methyl-2,3,3a,12b-tetrahydrodibenzo[2,3:6,7]oxepino[4,5-c]pyrrole
silver fluoride [no description available]	2.06	1	0	fluoride salt; silver salt
org 4428 [no description available]	2.04	1	0
5-methyl-2-pyrimidinone 5-methyl-2-pyrimidinone: structure given in first source	2.08	1	0
lignin Lignin: The most abundant natural aromatic organic polymer found in all vascular plants. Lignin together with cellulose and hemicellulose are the major cell wall components of the fibers of all wood and grass species. Lignin is composed of coniferyl, p-coumaryl, and sinapyl alcohols in varying ratios in different plant species. (From Merck Index, 11th ed). lignin : A polyphenylpropanoid derived from three monolignol monomers: trans-p-coumaryl alcohol, coniferol and trans-sinapyl alcohol. There is extensive cross-linking and no defined primary structure.	3.87	11	0
organophosphonates hydrogenphosphite : A divalent inorganic anion resulting from the removal of a proton from two of the hydroxy groups of phosphorous acid.	2.06	1	0	divalent inorganic anion; phosphite ion
etravirine [no description available]	2.31	1	0	aminopyrimidine; aromatic ether; dinitrile; organobromine compound	antiviral agent; HIV-1 reverse transcriptase inhibitor
deoxycholic acid Deoxycholic Acid: A bile acid formed by bacterial action from cholate. It is usually conjugated with glycine or taurine. Deoxycholic acid acts as a detergent to solubilize fats for intestinal absorption, is reabsorbed itself, and is used as a choleretic and detergent.. deoxycholic acid : A bile acid that is 5beta-cholan-24-oic acid substituted by hydroxy groups at positions 3 and 12 respectively.	1.99	1	0	bile acid; C24-steroid; dihydroxy-5beta-cholanic acid	human blood serum metabolite
1,4-phenylenebis(boronic acid) 1,4-phenylenebis(boronic acid): structure in first source	2.06	1	0
3-nitrotyrosine 3-nitrotyrosine: RN given refers to parent cpd without isomeric designation. 3-nitrotyrosine : A nitrotyrosine comprising tyrosine having a nitro group at the 3-position on the phenyl ring.	2	1	0	2-nitrophenols; C-nitro compound; nitrotyrosine; non-proteinogenic alpha-amino acid
5-hydroxymethylfurfural 5-hydroxymethylfurfural: has antisickling activity; HMF is the causative component in honey that affects the presystemic metabolism and pharmacokinetics of GZ in-vivo. 5-hydroxymethylfurfural : A member of the class of furans that is furan which is substituted at positions 2 and 5 by formyl and hydroxymethyl substituents, respectively. Virtually absent from fresh foods, it is naturally generated in sugar-containing foods during storage, and especially by drying or cooking. It is the causative component in honey that affects the presystemic metabolism and pharmacokinetics of GZ in-vivo.	2.07	1	0	arenecarbaldehyde; furans; primary alcohol	indicator; Maillard reaction product
zinc tetraphenylporphyrin [no description available]	2.04	1	0
permanganate [no description available]	7.21	1	0	manganese oxoacid
lithium chloride Lithium Chloride: A salt of lithium that has been used experimentally as an immunomodulator.. lithium chloride : A metal chloride salt with a Li(+) counterion.	1.97	1	0	inorganic chloride; lithium salt	antimanic drug; geroprotector
arabinose [no description available]	2.17	1	0	L-arabinose	Escherichia coli metabolite; mouse metabolite
epiglucan epiglucan: a highly side-chain/branched alkali-insoluble cell wall glucan from fungus such as Epicoccum nigrum, Botrytis cinerea, ascomycetes & basidiomycetes; also isolated S-4001 from Lei Wan (polyporus mylitiae), HA-beta-glucan from mushroom Pleutotus ostreatus (Fr.) Quel., and translam from seaweed Laminaria cichorioides; with commercially important functional properties including emulsification and friction reduction.	2.03	1	0
tartaric acid tartaric acid: RN given refers to cpd with unspecified isomeric designation. D-tartaric acid : The D-enantiomer of tartaric acid.	2.01	1	0	tartaric acid	Escherichia coli metabolite
(+)-limonene (4R)-limonene : An optically active form of limonene having (4R)-configuration.	2.05	1	0	limonene	plant metabolite
cellulase Cellulase: An endocellulase with specificity for the hydrolysis of 1,4-beta-glucosidic linkages in CELLULOSE, lichenin, and cereal beta-glucans.. beta-cellotriose : A cellotriose with a beta-configuration at the anomeric position.	2.11	1	0	cellotriose
betadex beta-Cyclodextrins: Cyclic GLUCANS consisting of seven (7) glucopyranose units linked by 1,4-glycosidic bonds.	3.15	5	0	cyclodextrin
ergosterol [no description available]	7.07	1	0	3beta-hydroxy-Delta(5)-steroid; 3beta-sterol; ergostanoid; phytosterols	fungal metabolite; Saccharomyces cerevisiae metabolite
resveratrol trans-resveratrol : A resveratrol in which the double bond has E configuration.	7.31	1	0	resveratrol	antioxidant; phytoalexin; plant metabolite; quorum sensing inhibitor; radical scavenger
retinol Vitamin A: Retinol and derivatives of retinol that play an essential role in metabolic functioning of the retina, the growth of and differentiation of epithelial tissue, the growth of bone, reproduction, and the immune response. Dietary vitamin A is derived from a variety of CAROTENOIDS found in plants. It is enriched in the liver, egg yolks, and the fat component of dairy products.. vitamin A : Any member of a group of fat-soluble retinoids produced via metabolism of provitamin A carotenoids that exhibit biological activity against vitamin A deficiency. Vitamin A is involved in immune function, vision, reproduction, and cellular communication.. all-trans-retinol : A retinol in which all four exocyclic double bonds have E- (trans-) geometry.. retinol : A retinoid consisting of 3,7-dimethylnona-2,4,6,8-tetraen-1-ol substituted at position 9 by a 2,6,6-trimethylcyclohex-1-en-1-yl group (geometry of the four exocyclic double bonds is not specified).	1.99	1	0	retinol; vitamin A	human metabolite; mouse metabolite; plant metabolite
ferulic acid ferulate : A monocarboxylic acid anion obtained by the deprotonation of the carboxy group of ferulic acid.	2.46	2	0	ferulic acids	anti-inflammatory agent; antioxidant; apoptosis inhibitor; cardioprotective agent; MALDI matrix material; plant metabolite
trans-4-coumaric acid hydroxycinnamic acid : Any member of the class of cinnamic acids carrying one or more hydroxy substituents.. trans-4-coumaric acid : The trans-isomer of 4-coumaric acid.. 4-coumaric acid : A coumaric acid in which the hydroxy substituent is located at C-4 of the phenyl ring.	2.46	2	0	4-coumaric acid	food component; mouse metabolite; plant metabolite
glycosides [no description available]	2.01	1	0
chalcone trans-chalcone : The trans-isomer of chalcone.	2.04	1	0	chalcone	EC 3.2.1.1 (alpha-amylase) inhibitor
retinaldehyde Retinaldehyde: A diterpene derived from the carotenoid VITAMIN A which functions as the active component of the visual cycle. It is the prosthetic group of RHODOPSIN (i.e., covalently bonded to ROD OPSIN as 11-cis-retinal). When stimulated by visible light, rhodopsin transforms this cis-isomer of retinal to the trans-isomer (11-trans-retinal). This transformation straightens-out the bend of the retinal molecule and causes a change in the shape of rhodopsin triggering the visual process. A series of energy-requiring enzyme-catalyzed reactions convert the 11-trans-retinal back to the cis-isomer.. all-trans-retinal : A retinal in which all four exocyclic double bonds have E- (trans-) geometry.	1.99	1	0	retinal; vitamin A	gap junctional intercellular communication inhibitor; human metabolite; mouse metabolite
flavin-adenine dinucleotide Flavin-Adenine Dinucleotide: A condensation product of riboflavin and adenosine diphosphate. The coenzyme of various aerobic dehydrogenases, e.g., D-amino acid oxidase and L-amino acid oxidase. (Lehninger, Principles of Biochemistry, 1982, p972)	2.06	1	0	flavin adenine dinucleotide; vitamin B2	cofactor; Escherichia coli metabolite; human metabolite; mouse metabolite; prosthetic group
sesquiterpenes [no description available]	2.17	1	0
phenylalanine methyl ester phenylalanine methyl ester: RN given refers to (L)-isomer. methyl L-phenylalaninate : An alpha-amino acid ester that is the methyl ester of L-phenylalanine.	1.93	1	0	alpha-amino acid ester; L-phenylalanine derivative
curcumin Curcumin: A yellow-orange dye obtained from tumeric, the powdered root of CURCUMA longa. It is used in the preparation of curcuma paper and the detection of boron. Curcumin appears to possess a spectrum of pharmacological properties, due primarily to its inhibitory effects on metabolic enzymes.. curcumin : A beta-diketone that is methane in which two of the hydrogens are substituted by feruloyl groups. A natural dyestuff found in the root of Curcuma longa.	2	1	0	aromatic ether; beta-diketone; diarylheptanoid; enone; polyphenol	anti-inflammatory agent; antifungal agent; antineoplastic agent; biological pigment; contraceptive drug; dye; EC 1.1.1.205 (IMP dehydrogenase) inhibitor; EC 1.1.1.21 (aldehyde reductase) inhibitor; EC 1.1.1.25 (shikimate dehydrogenase) inhibitor; EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor; EC 1.8.1.9 (thioredoxin reductase) inhibitor; EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor; EC 3.5.1.98 (histone deacetylase) inhibitor; flavouring agent; food colouring; geroprotector; hepatoprotective agent; immunomodulator; iron chelator; ligand; lipoxygenase inhibitor; metabolite; neuroprotective agent; nutraceutical; radical scavenger
capsaicin ALGRX-4975: an injectable capsaicin (TRPV1 receptor agonist) formulation for longlasting pain relief. capsaicinoid : A family of aromatic fatty amides produced as secondary metabolites by chilli peppers.	7.41	1	0	capsaicinoid	non-narcotic analgesic; TRPV1 agonist; voltage-gated sodium channel blocker
oxazolone Oxazolone: Immunologic adjuvant and sensitizing agent.	2.07	1	0
ethylenethiourea Ethylenethiourea: A degradation product of ethylenebis(dithiocarbamate) fungicides. It has been found to be carcinogenic and to cause THYROID hyperplasia.	2.05	1	0	imidazolidines
thiourea Thiourea: A photographic fixative used also in the manufacture of resins. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), this substance may reasonably be anticipated to be a carcinogen (Merck Index, 9th ed). Many of its derivatives are ANTITHYROID AGENTS and/or FREE RADICAL SCAVENGERS.. thiourea : The simplest member of the thiourea class, consisting of urea with the oxygen atom substituted by sulfur.	7.44	2	0	one-carbon compound; thioureas; ureas	antioxidant; chromophore
D-fructopyranose [no description available]	2.07	1	0	cyclic hemiketal; D-fructose; fructopyranose	sweetening agent
tempo TEMPO: structure. TEMPO : A member of the class of aminoxyls that is piperidine that carries an oxidanediyl group at position 1 and methyl groups at positions 2, 2, 6, and 6, respectively.	2.05	1	0	aminoxyls; piperidines	catalyst; ferroptosis inhibitor; radical scavenger
valinomycin Valinomycin: A cyclododecadepsipeptide ionophore antibiotic produced by Streptomyces fulvissimus and related to the enniatins. It is composed of 3 moles each of L-valine, D-alpha-hydroxyisovaleric acid, D-valine, and L-lactic acid linked alternately to form a 36-membered ring. (From Merck Index, 11th ed) Valinomycin is a potassium selective ionophore and is commonly used as a tool in biochemical studies.. valinomycin : A twelve-membered cyclodepsipeptide composed of three repeating D-alpha-hydroxyisovaleryl-D-valyl-L-lactoyl-L-valyl units joined in sequence. An antibiotic found in several Streptomyces strains.	2.69	3	0	cyclodepsipeptide; macrocycle	antimicrobial agent; antiviral agent; bacterial metabolite; potassium ionophore
laccase Laccase: A copper-containing oxidoreductase enzyme that catalyzes the oxidation of 4-benzenediol to 4-benzosemiquinone. It also has activity towards a variety of O-quinols and P-quinols. It primarily found in FUNGI and is involved in LIGNIN degradation, pigment biosynthesis and detoxification of lignin-derived products.	2.98	3	0
lithium Lithium: An element in the alkali metals family. It has the atomic symbol Li, atomic number 3, and atomic weight [6.938; 6.997]. Salts of lithium are used in treating BIPOLAR DISORDER.	1.97	1	0	alkali metal atom
nitrogen dioxide Nitrogen Dioxide: Nitrogen oxide (NO2). A highly poisonous gas. Exposure produces inflammation of lungs that may only cause slight pain or pass unnoticed, but resulting edema several days later may cause death. (From Merck, 11th ed) It is a major atmospheric pollutant that is able to absorb UV light that does not reach the earth's surface.	2	1	0	nitrogen oxide
quinine [no description available]	2.1	1	0	cinchona alkaloid	antimalarial; muscle relaxant; non-narcotic analgesic
calixarenes Calixarenes: Phenolic metacyclophanes derived from condensation of PHENOLS and ALDEHYDES. The name derives from the vase-like molecular structures. A bracketed [n] indicates the number of aromatic rings.. calixarenes : Originally macrocyclic compounds capable of assuming a basket (or "calix") shaped conformation. They are formed from p-hydrocarbyl phenols and formaldehyde. The term now applies to a variety of derivatives by substitution of the hydrocarbon cyclo{oligo[(1,3-phenylene)methylene]}.. calixarene : A macrocycle composed of 1,3-phenylene groups linked by methylene groups. The number of 1,3-phenylene units in the macrocycle is denoted by the "n" in calix[n]arene name.	2.8	3	0
sodium dodecyl sulfate Sodium Dodecyl Sulfate: An anionic surfactant, usually a mixture of sodium alkyl sulfates, mainly the lauryl; lowers surface tension of aqueous solutions; used as fat emulsifier, wetting agent, detergent in cosmetics, pharmaceuticals and toothpastes; also as research tool in protein biochemistry.. sodium dodecyl sulfate : An organic sodium salt that is the sodium salt of dodecyl hydrogen sulfate.	3.63	9	0	organic sodium salt	detergent; protein denaturant
alpha-chymotrypsin Chymotrypsin: A serine endopeptidase secreted by the pancreas as its zymogen, CHYMOTRYPSINOGEN and carried in the pancreatic juice to the duodenum where it is activated by TRYPSIN. It selectively cleaves aromatic amino acids on the carboxyl side.	3.23	6	0
naphthoquinones Naphthoquinones: Naphthalene rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.	3.85	3	0
hydroxyethylcellulose hydroxyethylcellulose: component of contact lens wetting solutions; aldiamed is an artificial saliva; RN given refers to parent cpd. hydroxyethylcellulose : A polysaccharide derivative that is cellulose in which hydroxyethyl groups are bound to some of the hydroxyl groups of the glucopyranose monomers.	2.1	1	0
2-nitro-4-phenylenediamine 2-nitro-4-phenylenediamine: 2-nitro-1,4-benzenediamine; RN given refers to parent cpd. 2-nitro-p-phenylenediamine : A primary amino compound that is p-phenylenediamine in which one of the hydrogens attached to the benzene ring is replaced by a nitro group. It is a cosmetic hair dye intermediate that is used in permanent hair colouring products (diluted 1:1 with an oxidising agent prior to application).	1.96	1	0	C-nitro compound; primary amino compound
quercetin [no description available]	2.15	1	0	7-hydroxyflavonol; pentahydroxyflavone	antibacterial agent; antineoplastic agent; antioxidant; Aurora kinase inhibitor; chelator; EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor; geroprotector; phytoestrogen; plant metabolite; protein kinase inhibitor; radical scavenger
beta carotene beta Carotene: A carotenoid that is a precursor of VITAMIN A. Beta carotene is administered to reduce the severity of photosensitivity reactions in patients with erythropoietic protoporphyria (PORPHYRIA, ERYTHROPOIETIC).. provitamin A : A provitamin that can be converted into vitamin A by enzymes from animal tissues.	2.36	2	0	carotenoid beta-end derivative; cyclic carotene	antioxidant; biological pigment; cofactor; ferroptosis inhibitor; human metabolite; mouse metabolite; plant metabolite; provitamin A
hymecromone Hymecromone: A coumarin derivative possessing properties as a spasmolytic, choleretic and light-protective agent. It is also used in ANALYTICAL CHEMISTRY TECHNIQUES for the determination of NITRIC ACID.	2.44	2	0	hydroxycoumarin	antineoplastic agent; hyaluronic acid synthesis inhibitor
rutin Hydroxyethylrutoside: Monohydroxyethyl derivative of rutin. Peripheral circulation stimulant used in treatment of venous disorders.	2.15	1	0	disaccharide derivative; quercetin O-glucoside; rutinoside; tetrahydroxyflavone	antioxidant; metabolite
harmine Harmine: Alkaloid isolated from seeds of PEGANUM HARMALA; ZYGOPHYLLACEAE. It is identical to banisterine, or telepathine, from Banisteria caapi and is one of the active ingredients of hallucinogenic drinks made in the western Amazon region from related plants. It has no therapeutic use, but (as banisterine) was hailed as a cure for postencephalitic PARKINSON DISEASE in the 1920's.. harmine : A harmala alkaloid in which the harman skeleton is methoxy-substituted at C-7.	2.02	1	0	harmala alkaloid	anti-HIV agent; EC 1.4.3.4 (monoamine oxidase) inhibitor; metabolite
7-hydroxycoumarin 7-oxycoumarin: derivatives have anti-oxidant properties. umbelliferone : A hydroxycoumarin that is coumarin substituted by a hydroxy group ay position 7.	1.99	1	0	hydroxycoumarin	fluorescent probe; food component; plant metabolite
chrysin chrysin : A dihydroxyflavone in which the two hydroxy groups are located at positions 5 and 7.	2.15	1	0	7-hydroxyflavonol; dihydroxyflavone	anti-inflammatory agent; antineoplastic agent; antioxidant; EC 2.7.11.18 (myosin-light-chain kinase) inhibitor; hepatoprotective agent; plant metabolite
morin morin: a light yellowish pigment found in the wood of old fustic (Chlorophora tinctoria). morin : A pentahydroxyflavone that is 7-hydroxyflavonol bearing three additional hydroxy substituents at positions 2' 4' and 5.	2.15	1	0	7-hydroxyflavonol; pentahydroxyflavone	angiogenesis modulating agent; anti-inflammatory agent; antibacterial agent; antihypertensive agent; antineoplastic agent; antioxidant; EC 5.99.1.2 (DNA topoisomerase) inhibitor; hepatoprotective agent; metabolite; neuroprotective agent
cinnamyl anthranilate [no description available]	2.05	1	0	benzoate ester
lead Lead: A soft, grayish metal with poisonous salts; atomic number 82, atomic weight 207.2, symbol Pb.	7.15	1	0	carbon group element atom; elemental lead; metal atom	neurotoxin
cesium Cesium: A member of the alkali metals. It has an atomic symbol Cs, atomic number 50, and atomic weight 132.91. Cesium has many industrial applications, including the construction of atomic clocks based on its atomic vibrational frequency.	2.03	1	0	alkali metal atom
chlorferron chlorferron: metabolite of coumaphos	2.06	1	0	organochlorine compound
rubidium Rubidium: An element that is an alkali metal. It has an atomic symbol Rb, atomic number 37, and atomic weight 85.47. It is used as a chemical reagent and in the manufacture of photoelectric cells.	1.98	1	0	alkali metal atom
aluminum Aluminum: A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98.	1.97	1	0	boron group element atom; elemental aluminium; metal atom
arsenic Arsenic: A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed)	7.15	1	0	metalloid atom; pnictogen	micronutrient
calcium bromide calcium bromide: can cause skin injuries	2.05	1	0	calcium salt
naltrexone Naltrexone: Derivative of noroxymorphone that is the N-cyclopropylmethyl congener of NALOXONE. It is a narcotic antagonist that is effective orally, longer lasting and more potent than naloxone, and has been proposed for the treatment of heroin addiction. The FDA has approved naltrexone for the treatment of alcohol dependence.. naltrexone : An organic heteropentacyclic compound that is naloxone substituted in which the allyl group attached to the nitrogen is replaced by a cyclopropylmethyl group. A mu-opioid receptor antagonist, it is used to treat alcohol dependence.	2.05	1	0	cyclopropanes; morphinane-like compound; organic heteropentacyclic compound	antidote to opioid poisoning; central nervous system depressant; environmental contaminant; mu-opioid receptor antagonist; xenobiotic
sulfur Sulfur: An element that is a member of the chalcogen family. It has an atomic symbol S, atomic number 16, and atomic weight [32.059; 32.076]. It is found in the amino acids cysteine and methionine.	2.07	1	0	chalcogen; nonmetal atom	macronutrient
dimyristoylphosphatidylcholine 1,2-di-O-myristoyl-sn-glycero-3-phosphocholine : A 1,2-diacyl-sn-glycero-3-phosphocholine where the two phosphatidyl acyl groups are specified as tetradecanoyl (myristoyl).. dimyristoyl phosphatidylcholine : A phosphatidylcholine where the phosphatidyl acyl groups are specified as tetradecanoyl (myristoyl).	2	1	0	1,2-diacyl-sn-glycero-3-phosphocholine; phosphatidylcholine 28:0; tetradecanoate ester	antigen; mouse metabolite
silicon Silicon: A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight [28.084; 28.086].	2.05	1	0	carbon group element atom; metalloid atom; nonmetal atom
boron Boron: A trace element with the atomic symbol B, atomic number 5, and atomic weight [10.806; 10.821]. Boron-10, an isotope of boron, is used as a neutron absorber in BORON NEUTRON CAPTURE THERAPY.	7.8	3	0	boron group element atom; metalloid atom; nonmetal atom	micronutrient
1,1'-diethyl-2,2'-cyanine pseudoisocyanine: metachromatic quinoline tissue stain; may polymerize to yield different colors; also used in fluorescence cytochemistry may bind to DNA; minor descriptor (79-86); on-line & INDEX MEDICUS search QUINOLINES (79-86); RN given refers to parent cpd	2.04	1	0	1,1'-diethyl-2,2'-cyanine; quinolines
ammonium sulfate Ammonium Sulfate: Sulfuric acid diammonium salt. It is used in CHEMICAL FRACTIONATION of proteins.. ammonium sulfate : An inorganic sulfate salt obtained by reaction of sulfuric acid with two equivalents of ammonia. A high-melting (decomposes above 280degreeC) white solid which is very soluble in water (70.6 g/100 g water at 0degreeC; 103.8 g/100 g water at 100degreeC), it is widely used as a fertilizer for alkaline soils.	1.97	1	0	ammonium salt; inorganic sulfate salt	fertilizer
tetrodotoxin Tetrodotoxin: An aminoperhydroquinazoline poison found mainly in the liver and ovaries of fishes in the order TETRAODONTIFORMES, which are eaten. The toxin causes paresthesia and paralysis through interference with neuromuscular conduction.. tetrodotoxin : A quinazoline alkaloid that is a marine toxin isolated from fish such as puffer fish. It has been shown to exhibit potential neutotoxicity due to its ability to block voltage-gated sodium channels.	2.1	1	0	azatetracycloalkane; oxatetracycloalkane; quinazoline alkaloid	animal metabolite; bacterial metabolite; marine metabolite; neurotoxin; voltage-gated sodium channel blocker
selenium Selenium: An element with the atomic symbol Se, atomic number 34, and atomic weight 78.97. It is an essential micronutrient for mammals and other animals but is toxic in large amounts. Selenium protects intracellular structures against oxidative damage. It is an essential component of GLUTATHIONE PEROXIDASE.	2.07	1	0	chalcogen; nonmetal atom	micronutrient
trimethoxysilane [no description available]	2.06	1	0
oxalates Oxalates: Derivatives of OXALIC ACID. Included under this heading are a broad variety of acid forms, salts, esters, and amides that are derived from the ethanedioic acid structure.	2.57	2	0
bacteriochlorophylls Bacteriochlorophylls: Pyrrole containing pigments found in photosynthetic bacteria.	2.02	1	0
oleanane oleanane: from the aerial roots of Ficus microcarpa; structure in first source	2.08	1	0	terpenoid fundamental parent; triterpene
mannich bases Mannich Bases: Ketonic amines prepared from the condensation of a ketone with formaldehyde and ammonia or a primary or secondary amine. A Mannich base can act as the equivalent of an alpha,beta unsaturated ketone in synthesis or can be reduced to form physiologically active amino alcohols.	2.1	1	0
disilver oxide [no description available]	2.25	1	0
mocetinostat mocetinostat: undergoing phase II clinical trials for treatment of cancer. mocetinostat : A benzamide obtained by formal condensation of the carboxy group of 4-({[4-(pyridin-3-yl)pyrimidin-2-yl]amino}methyl)benzoic acid with one of the amino groups of benzene-1,2-diamine. It is an orally active and isotype-selective HDAC inhibitor which exhibits antitumour activity (IC50 = 0.15, 0.29, 1.66 and 0.59 muM for HDAC1, HDAC2, HDAC3 and HDAC11).	2.44	2	0	aminopyrimidine; benzamides; pyridines; secondary amino compound; secondary carboxamide; substituted aniline	antineoplastic agent; apoptosis inducer; autophagy inducer; cardioprotective agent; EC 3.5.1.98 (histone deacetylase) inhibitor; hepatotoxic agent
lamellarin d lamellarin D: a benzo-isoquinoline-coumarin	2.02	1	0
zeolites [no description available]	2.47	2	0
aluminum oxide Aluminum Oxide: An oxide of aluminum, occurring in nature as various minerals such as bauxite, corundum, etc. It is used as an adsorbent, desiccating agent, and catalyst, and in the manufacture of dental cements and refractories.	2.06	1	0
phosphoramidite phosphoramidite: structure in first source. phosphoramidite : A compound with the general formula (RO)2PNR2. Phosphoramidites can be regarded as phosphites that have an NR2 instead of an OH group, or as amides of phosphorous acid.	2.04	1	0
alnumycin alnumycin: a naphthoquinone antibiotic from Streptomyces sp; structure given in first source	2.46	2	0
oxadiazoles Oxadiazoles: Compounds containing five-membered heteroaromatic rings containing two carbons, two nitrogens, and one oxygen atom which exist in various regioisomeric forms.	2.45	2	0
ribose ribopyranose : The pyranose form of ribose.	2.07	1	0	D-ribose; ribopyranose
acebutolol alpha-D-glucosyl-(1->4)-alpha-D-mannose : An alpha-D-glucosyl-(1->4)-D-mannopyranose in which the anomeric hydroxy group has alpha configuration.	1.96	1	0	alpha-D-glucosyl-(1->4)-D-mannopyranose
sepharose agarose : A linear polysaccharide made up from alternating D-galactose and 3,6-anhydro-alpha-L-galactopyranose residues joined by alpha-(1->3)- and beta-(1->4)-linkages.	2.02	1	0
resorcinarene resorcinarene: structure in first source	7.57	2	0
acid phosphatase Acid Phosphatase: An enzyme that catalyzes the conversion of an orthophosphoric monoester and water to an alcohol and orthophosphate. EC 3.1.3.2.	2.13	1	0
pyrromethene 567 pyrromethene 567: structure in first source	2.11	1	0
friedelane friedelane: from leaves of Maytenus aquifolium (Celastraceae); structure in first source. friedelane : A triterpene that is docosahydropicene substituted by 8 methyl groups at positions 2, 2, 4a, 6a, 8a, 9, 12b and 14a.	2.08	1	0	triterpene	metabolite
nad NAD(1-) : An anionic form of nicotinamide adenine dinucleotide arising from deprotonation of the two OH groups of the diphosphate moiety.	2.06	1	0	organophosphate oxoanion	cofactor; human metabolite; hydrogen acceptor; Saccharomyces cerevisiae metabolite
gramicidin a Gramicidin: A group of peptide antibiotics from BACILLUS brevis. Gramicidin C or S is a cyclic, ten-amino acid polypeptide and gramicidins A, B, D are linear. Gramicidin is one of the two principal components of TYROTHRICIN.	2.68	3	0
oligonucleotides [no description available]	7.07	1	0
cellulose DEAE-Cellulose: Cellulose derivative used in chromatography, as ion-exchange material, and for various industrial applications.	2.92	4	0	glycoside
phosphatidylcholines Phosphatidylcholines: Derivatives of PHOSPHATIDIC ACIDS in which the phosphoric acid is bound in ester linkage to a CHOLINE moiety.	2.4	2	0	1,2-diacyl-sn-glycero-3-phosphocholine
platencin platencin: inhibits both FabF and FabH; structure in first source. platencin : A monocarboxylic acid amide obtained by the formal condensation of the amino group of 3-amino-2,4-dihydroxybenzoic acid with the carboxy group of the polycyclic cage component. It is an antibiotic isolated from Streptomyces platensis and exhibits inhibitory activity against fatty acid synthase.	2.1	1	0	aromatic amide; cyclic ketone; dihydroxybenzoic acid; monocarboxylic acid amide; polycyclic cage	antibacterial agent; antimicrobial agent; bacterial metabolite; EC 2.3.1.85 (fatty acid synthase) inhibitor
chitosan [no description available]	2.77	3	0
chiniofon Hydroxyquinolines: The 8-hydroxy derivatives inhibit various enzymes and their halogenated derivatives, though neurotoxic, are used as topical anti-infective agents, among other uses.	2.1	1	0
4,4-difluoro-4-bora-3a,4a-diaza-s-indacene [no description available]	2.11	1	0	BODIPY compound
piperidines Piperidines: A family of hexahydropyridines.	2.42	2	0
mannosylglycerate 2-(alpha-D-mannosyl)-D-glycerate : Conjugate base of 2-(alpha-D-mannosyl)-D-glyceric acid	2.02	1	0	carbohydrate acid anion
methylcellulose Methylcellulose: Methylester of cellulose. Methylcellulose is used as an emulsifying and suspending agent in cosmetics, pharmaceutics and the chemical industry. It is used therapeutically as a bulk laxative.	2.03	1	0
heme Heme: The color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins.. ferroheme : Any iron(II)--porphyrin coordination complex.. ferroheme b : Heme b in which the iron has oxidation state +2.. heme : A heme is any tetrapyrrolic chelate of iron.	1.96	1	0
ascorbic acid Ascorbic Acid: A six carbon compound related to glucose. It is found naturally in citrus fruits and many vegetables. Ascorbic acid is an essential nutrient in human diets, and necessary to maintain connective tissue and bone. Its biologically active form, vitamin C, functions as a reducing agent and coenzyme in several metabolic pathways. Vitamin C is considered an antioxidant.. L-ascorbic acid : The L-enantiomer of ascorbic acid and conjugate acid of L-ascorbate.. L-ascorbate : The L-enantiomer of ascorbate and conjugate base of L-ascorbic acid, arising from selective deprotonation of the 3-hydroxy group. Required for a range of essential metabolic reactions in all animals and plants.. vitamin C : Any member of a group of vitamers that belong to the chemical structural class called butenolides that exhibit biological activity against vitamin C deficiency in animals. The vitamers include L-ascorbic acid and its salt, ionized and oxidized forms.	2.72	3	0	ascorbic acid; vitamin C	coenzyme; cofactor; flour treatment agent; food antioxidant; food colour retention agent; geroprotector; plant metabolite; skin lightening agent
tetracycline Tetracycline: A naphthacene antibiotic that inhibits AMINO ACYL TRNA binding during protein synthesis.. tetracycline : A broad-spectrum polyketide antibiotic produced by the Streptomyces genus of actinobacteria.	2.38	2	0
mobic Meloxicam: A benzothiazine and thiazole derivative that acts as a NSAID and cyclooxygenase-2 (COX-2) inhibitor. It is used in the treatment of RHEUMATOID ARTHRITIS; OSTEOARTHRITIS; and ANKYLOSING SPONDYLITIS.. meloxicam : A benzothiazine that is piroxicam in which the pyridin-2-yl group is replaced by a 5-methyl-1,3-thiazol-2-yl group. A non-steroidal anti-inflammatory drug and selective inhibitor of COX-2, it is used particularly for the management of rheumatoid arthritis.	2.04	1	0	1,3-thiazoles; benzothiazine; monocarboxylic acid amide	analgesic; antirheumatic drug; cyclooxygenase 2 inhibitor; non-steroidal anti-inflammatory drug
warfarin Warfarin: An anticoagulant that acts by inhibiting the synthesis of vitamin K-dependent coagulation factors. Warfarin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, pulmonary embolism, and atrial fibrillation with embolization. It is also used as an adjunct in the prophylaxis of systemic embolism after myocardial infarction. Warfarin is also used as a rodenticide.. warfarin : A racemate comprising equal amounts of (R)- and (S)-warfarin. Extensively used as both an anticoagulant drug and as a pesticide against rats and mice.. 4-hydroxy-3-(3-oxo-1-phenylbutyl)-1-benzopyran-2-one : A member of the class of coumarins that is 4-hydroxycoumarin which is substituted at position 3 by a 1-phenyl-3-oxo-1-butyl group.	3.15	5	0	benzenes; hydroxycoumarin; methyl ketone
6-o-palmitoylascorbic acid [no description available]	2	1	0	fatty acid ester
ascorbic acid 2-o-glucoside ascorbic acid 2-O-glucoside: has same vitamin C activity as L-ascorbic acid	2.05	1	0	glycoside
clay Clay: A naturally-occurring rock or soil constituent characterized by particles with a diameter of less than 0.005 mm. It is composed primarily of hydrous aluminum silicates, trace amounts of metal OXIDES, and organic matter.	7.41	1	0
transforming growth factor beta Transforming Growth Factor beta: A factor synthesized in a wide variety of tissues. It acts synergistically with TGF-alpha in inducing phenotypic transformation and can also act as a negative autocrine growth factor. TGF-beta has a potential role in embryonal development, cellular differentiation, hormone secretion, and immune function. TGF-beta is found mostly as homodimer forms of separate gene products TGF-beta1, TGF-beta2 or TGF-beta3. Heterodimers composed of TGF-beta1 and 2 (TGF-beta1.2) or of TGF-beta2 and 3 (TGF-beta2.3) have been isolated. The TGF-beta proteins are synthesized as precursor proteins.	2.4	2	0
phthalocyanine phthalocyanine : A tetrapyrrole fundamental parent that consists of four isoindole-type units, with the connecting carbon atoms in the macrocycle replaced by nitrogen.	2.11	1	0	phthalocyanines; tetrapyrrole fundamental parent
cyclopenta(cd)pyrene 3,4-oxide cyclopenta(cd)pyrene 3,4-oxide: structure given in first source	2.03	1	0
cyclosporine Cyclosporine: A cyclic undecapeptide from an extract of soil fungi. It is a powerful immunosupressant with a specific action on T-lymphocytes. It is used for the prophylaxis of graft rejection in organ and tissue transplantation. (From Martindale, The Extra Pharmacopoeia, 30th ed).	2.15	1	0
muramidase Muramidase: A basic enzyme that is present in saliva, tears, egg white, and many animal fluids. It functions as an antibacterial agent. The enzyme catalyzes the hydrolysis of 1,4-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrin. EC 3.2.1.17.	2.89	4	0
amyloid beta-peptides amyloid beta-protein (1-40): although acutely neurotoxic in both rat & monkey cerebral cortex, neuronal degeneration in primates resembles more closely to that found in Alzheimer's disease; amino acid sequence has been determined	2.21	1	0
lupane lupane: has antineoplastic activity; structure in first source	2.08	1	0
deoxyguanosine [no description available]	2.17	1	0	purine 2'-deoxyribonucleoside; purines 2'-deoxy-D-ribonucleoside	Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
inosine [no description available]	2.07	1	0	inosines; purines D-ribonucleoside	Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite
8-hydroxy-2'-deoxyguanosine 8-Hydroxy-2'-Deoxyguanosine: Common oxidized form of deoxyguanosine in which C-8 position of guanine base has a carbonyl group.. 8-hydroxy-2'-deoxyguanosine : Guanosine substituted at the purine 8-position by a hydroxy group. It is used as a biomarker of oxidative DNA damage.	2.17	1	0	guanosines	biomarker
acetylcellulose acetylcellulose: coating compound. cellulose acetate : A glucan derivative obtained through the esterification of cellulose by acetic anhydride or acetic acid, resulting in the substitution of some of the hydroxy groups of cellulose by acetyl groups. It is used in a variety of applications including base material for photographic film, clothing, membrane filters, coatings, food packaging, and as a frame material for eyeglasses.	2	1	0
concanavalin a Concanavalin A: A MANNOSE/GLUCOSE binding lectin isolated from the jack bean (Canavalia ensiformis). It is a potent mitogen used to stimulate cell proliferation in lymphocytes, primarily T-lymphocyte, cultures.	1.98	1	0
pyrimidinones Pyrimidinones: Heterocyclic compounds known as 2-pyrimidones (or 2-hydroxypyrimidines) and 4-pyrimidones (or 4-hydroxypyrimidines) with the general formula C4H4N2O.	2.48	2	0
phenanthrenes Phenanthrenes: POLYCYCLIC AROMATIC HYDROCARBONS composed of three fused BENZENE rings.. phenanthrenes : Any benzenoid aromatic compound that consists of a phenanthrene skeleton and its substituted derivatives thereof.	2.51	2	0

Condition	Relationship Strength	Studies
Allodynia [description not available]	2.41	1
Benign Neoplasms [description not available]	5.7	7
Neoplasms New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms.	5.7	7
Innate Inflammatory Response [description not available]	2.5	2
Inflammation A pathological process characterized by injury or destruction of tissues caused by a variety of cytologic and chemical reactions. It is usually manifested by typical signs of pain, heat, redness, swelling, and loss of function.	7.5	2
Carcinogenesis The origin, production or development of cancer through genotypic and phenotypic changes which upset the normal balance between cell proliferation and cell death. Carcinogenesis generally requires a constellation of steps, which may occur quickly or over a period of many years.	2.63	2
Cancer of Liver [description not available]	4.17	6
Liver Neoplasms Tumors or cancer of the LIVER.	4.17	6
Grippe [description not available]	2.31	1
Influenza, Human An acute viral infection in humans involving the respiratory tract. It is marked by inflammation of the NASAL MUCOSA; the PHARYNX; and conjunctiva, and by headache and severe, often generalized, myalgia.	2.31	1
Experimental Hepatoma [description not available]	2.73	3
Hyperplasia An increase in the number of cells in a tissue or organ without tumor formation. It differs from HYPERTROPHY, which is an increase in bulk without an increase in the number of cells.	2.52	2
Autism Spectrum Disorder Wide continuum of associated cognitive and neurobehavioral disorders, including, but not limited to, three core-defining features: impairments in socialization, impairments in verbal and nonverbal communication, and restricted and repetitive patterns of behaviors. (from DSM-V)	2.17	1
Autism [description not available]	2.17	1
Autistic Disorder A disorder beginning in childhood. It is marked by the presence of markedly abnormal or impaired development in social interaction and communication and a markedly restricted repertoire of activity and interest. Manifestations of the disorder vary greatly depending on the developmental level and chronological age of the individual. (DSM-V)	2.17	1
Chromosomal Breakage [description not available]	2.21	1
Kidney Diseases Pathological processes of the KIDNEY or its component tissues.	2.21	1
Sensitivity and Specificity Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)	4.04	14
Ache [description not available]	2.11	1
Pain An unpleasant sensation induced by noxious stimuli which are detected by NERVE ENDINGS of NOCICEPTIVE NEURONS.	2.11	1
Body Weight The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.	2.67	3
Chronic Illness [description not available]	2.05	1
Condition, Preneoplastic [description not available]	2.05	1
Chronic Disease Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care (Dictionary of Health Services Management, 2d ed). For epidemiological studies chronic disease often includes HEART DISEASES; STROKE; CANCER; and diabetes (DIABETES MELLITUS, TYPE 2).	2.05	1
Precancerous Conditions Pathological conditions that tend eventually to become malignant.	2.05	1
Electrolytes Substances that dissociate into two or more ions, to some extent, in water. Solutions of electrolytes thus conduct an electric current and can be decomposed by it (ELECTROLYSIS). (Grant & Hackh's Chemical Dictionary, 5th ed)	2.05	1
Acute Liver Injury, Drug-Induced [description not available]	2.06	1
Carbon Tetrachloride Poisoning Poisoning that results from ingestion, injection, inhalation, or skin absorption of CARBON TETRACHLORIDE.	2.06	1
Chemical and Drug Induced Liver Injury A spectrum of clinical liver diseases ranging from mild biochemical abnormalities to ACUTE LIVER FAILURE, caused by drugs, drug metabolites, herbal and dietary supplements and chemicals from the environment.	2.06	1
Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	2.4	2
Muscle Contraction A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.	2.07	1
Retinal Pigment Epithelial Detachment [description not available]	1.93	1
Retinal Degeneration A retrogressive pathological change in the retina, focal or generalized, caused by genetic defects, inflammation, trauma, vascular disease, or aging. Degeneration affecting predominantly the macula lutea of the retina is MACULAR DEGENERATION. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p304)	1.93	1
Retinal Detachment Separation of the inner layers of the retina (neural retina) from the pigment epithelium. Retinal detachment occurs more commonly in men than in women, in eyes with degenerative myopia, in aging and in aphakia. It may occur after an uncomplicated cataract extraction, but it is seen more often if vitreous humor has been lost during surgery. (Dorland, 27th ed; Newell, Ophthalmology: Principles and Concepts, 7th ed, p310-12).	1.93	1
Burns, Chemical Burns caused by contact with or exposure to CAUSTICS or strong ACIDS.	1.94	1
Contact Dermatitis [description not available]	1.94	1
Burns Injuries to tissues caused by contact with heat, steam, chemicals (BURNS, CHEMICAL), electricity (BURNS, ELECTRIC), or the like.	1.94	1
Dermatitis Any inflammation of the skin.	1.94	1
Dermatitis, Contact A type of acute or chronic skin reaction in which sensitivity is manifested by reactivity to materials or substances coming in contact with the skin. It may involve allergic or non-allergic mechanisms.	1.94	1
Cardiac Death [description not available]	1.93	1
Diseases, Occupational [description not available]	3.28	2
Chalazia [description not available]	2.01	1
Ptosis, Eyelid [description not available]	2.01	1
Acariasis [description not available]	2.01	1
Blepharoptosis Drooping of the upper lid due to deficient development or paralysis of the levator palpebrae muscle.	2.01	1
Chalazion A non-neoplastic cyst of the MEIBOMIAN GLANDS of the eyelid.	2.01	1
Chromosome-Defective Micronuclei [description not available]	2.91	4
Anasarca [description not available]	2.04	1
Edema Abnormal fluid accumulation in TISSUES or body cavities. Most cases of edema are present under the SKIN in SUBCUTANEOUS TISSUE.	2.04	1
Dehydration The condition that results from excessive loss of water from a living organism.	1.92	1
Cancer of Kidney [description not available]	2.87	1
Kidney Neoplasms Tumors or cancers of the KIDNEY.	2.87	1
Adverse Drug Event [description not available]	2.87	1
Experimental Neoplasms [description not available]	4.06	3
Drug-Related Side Effects and Adverse Reactions Disorders that result from the intended use of PHARMACEUTICAL PREPARATIONS. Included in this heading are a broad variety of chemically-induced adverse conditions due to toxicity, DRUG INTERACTIONS, and metabolic effects of pharmaceuticals.	2.87	1
Nephritis Inflammation of any part of the KIDNEY.	1.95	1
Serum Sickness Immune complex disease caused by the administration of foreign serum or serum proteins and characterized by fever, lymphadenopathy, arthralgia, and urticaria. When they are complexed to protein carriers, some drugs can also cause serum sickness when they act as haptens inducing antibody responses.	1.95	1
Cancer of Nose [description not available]	2.38	2
Abnormalities, Autosome [description not available]	2.91	1
Cell Transformation, Neoplastic Cell changes manifested by escape from control mechanisms, increased growth potential, alterations in the cell surface, karyotypic abnormalities, morphological and biochemical deviations from the norm, and other attributes conferring the ability to invade, metastasize, and kill.	2.39	2
Genetic Non-Disjunction [description not available]	2.01	1
Hepatocellular Carcinoma [description not available]	1.97	1
Carcinoma, Hepatocellular A primary malignant neoplasm of epithelial liver cells. It ranges from a well-differentiated tumor with EPITHELIAL CELLS indistinguishable from normal HEPATOCYTES to a poorly differentiated neoplasm. The cells may be uniform or markedly pleomorphic, or form GIANT CELLS. Several classification schemes have been suggested.	1.97	1
Fetal Resorption The disintegration and assimilation of the dead FETUS in the UTERUS at any stage after the completion of organogenesis which, in humans, is after the 9th week of GESTATION. It does not include embryo resorption (see EMBRYO LOSS).	1.96	1
Abnormalities, Drug-Induced Congenital abnormalities caused by medicinal substances or drugs of abuse given to or taken by the mother, or to which she is inadvertently exposed during the manufacture of such substances. The concept excludes abnormalities resulting from exposure to non-medicinal chemicals in the environment.	1.96	1
HbS Disease [description not available]	1.96	1
Extravascular Hemolysis [description not available]	1.96	1
Thalassemias [description not available]	1.96	1
Anemia, Sickle Cell A disease characterized by chronic hemolytic anemia, episodic painful crises, and pathologic involvement of many organs. It is the clinical expression of homozygosity for hemoglobin S.	1.96	1
Hemolysis The destruction of ERYTHROCYTES by many different causal agents such as antibodies, bacteria, chemicals, temperature, and changes in tonicity.	1.96	1
Thalassemia A group of hereditary hemolytic anemias in which there is decreased synthesis of one or more hemoglobin polypeptide chains. There are several genetic types with clinical pictures ranging from barely detectable hematologic abnormality to severe and fatal anemia.	1.96	1

1,4-dioxane

Description

Cross-References

Synonyms (142)

Research Excerpts

Toxicity

Pharmacokinetics

Compound-Compound Interactions

Bioavailability

Dosage Studied

Roles (4)

Drug Classes (2)

Pathways (1)

Protein Targets (1)

Potency Measurements

Bioassays (3)

Research

Studies (663)

Market Indicators

Research Demand Index: 77.16

Study Types