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. | 2.04 | 1 | 0 | chloroethanes | hepatotoxic agent; mutagen; non-polar solvent |
1,2,4-trichlorobenzene 1,2,4-trichlorobenzene : A trichlorobenzene with chloro substituents at positions 1, 2 and 4. | 2.04 | 1 | 0 | trichlorobenzene | |
benzene [no description available] | 2.44 | 2 | 0 | aromatic annulene; benzenes; volatile organic compound | carcinogenic agent; environmental contaminant; non-polar solvent |
octane Octanes: Eight-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives.. octane : A straight chain alkane composed of 8 carbon atoms. | 2.46 | 2 | 0 | alkane | xenobiotic |
indole [no description available] | 2.02 | 1 | 0 | indole; polycyclic heteroarene | Escherichia coli metabolite |
naphthalene [no description available] | 2.44 | 2 | 0 | naphthalenes; ortho-fused bicyclic arene | apoptosis inhibitor; carcinogenic agent; environmental contaminant; mouse metabolite; plant metabolite; volatile oil component |
niacinamide nicotinamide : A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group. | 2.04 | 1 | 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 |
orotic acid Orotic Acid: An intermediate product in PYRIMIDINE synthesis which plays a role in chemical conversions between DIHYDROFOLATE and TETRAHYDROFOLATE.. orotic acid : A pyrimidinemonocarboxylic acid that is uracil bearing a carboxy substituent at position C-6. | 2.04 | 1 | 0 | pyrimidinemonocarboxylic acid | Escherichia coli metabolite; metabolite; mouse metabolite |
4-aminobenzoic acid 4-Aminobenzoic Acid: An aminobenzoic acid isomer that combines with pteridine and GLUTAMIC ACID to form FOLIC ACID. The fact that 4-aminobenzoic acid absorbs light throughout the UVB range has also resulted in its use as an ingredient in SUNSCREENS.. 4-ammoniobenzoate : A zwitterion obtained by transfer of a proton from the carboxy to the amino group of 4-aminobenzoic acid.. 4-aminobenzoic acid : An aminobenzoic acid in which the amino group is para to the carboxy group. | 2.04 | 1 | 0 | aminobenzoic acid; aromatic amino-acid zwitterion | allergen; Escherichia coli metabolite; plant metabolite |
phenanthrene phenanthrene : A polycyclic aromatic hydrocarbon composed of three fused benzene rings which takes its name from the two terms 'phenyl' and 'anthracene.' | 2.04 | 1 | 0 | ortho-fused polycyclic arene; ortho-fused tricyclic hydrocarbon; phenanthrenes | environmental contaminant; mouse metabolite |
phenol [no description available] | 2.02 | 1 | 0 | phenols | antiseptic drug; disinfectant; human xenobiotic metabolite; mouse metabolite |
dimethyl sulfide dimethyl sulfide: structure. dimethyl sulfide : A methyl sulfide in which the sulfur atom is substituted by two methyl groups. It is produced naturally by some marine algae.. methyl sulfide : Any aliphatic sulfide in which at least one of the organyl groups attached to the sulfur is a methyl group. | 2.04 | 1 | 0 | aliphatic sulfide | algal metabolite; bacterial xenobiotic metabolite; EC 3.5.1.4 (amidase) inhibitor; Escherichia coli metabolite; marine metabolite |
thiamine thiamine(1+) : A primary alcohol that is 1,3-thiazol-3-ium substituted by (4-amino-2-methylpyrimidin-5-yl)methyl, methyl and 2-hydroxyethyl groups at positions 3, 4 and 5, respectively. | 2.04 | 1 | 0 | primary alcohol; vitamin B1 | Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite |
toluene methylbenzene : Any alkylbenzene that is benzene substituted with one or more methyl groups. | 3.14 | 5 | 0 | methylbenzene; toluenes; volatile organic compound | cholinergic antagonist; fuel additive; neurotoxin; non-polar solvent |
benzo(a)pyrene Benzo(a)pyrene: A potent mutagen and carcinogen. It is a public health concern because of its possible effects on industrial workers, as an environmental pollutant, an as a component of tobacco smoke.. benzo[a]pyrene : An ortho- and peri-fused polycyclic arene consisting of five fused benzene rings. | 2.04 | 1 | 0 | ortho- and peri-fused polycyclic arene | carcinogenic agent; mouse metabolite |
vitamin k 3 Vitamin K 3: A synthetic naphthoquinone without the isoprenoid side chain and biological activity, but can be converted to active vitamin K2, menaquinone, after alkylation in vivo. | 2.04 | 1 | 0 | 1,4-naphthoquinones; vitamin K | angiogenesis inhibitor; antineoplastic agent; EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor; human urinary metabolite; nutraceutical |
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. | 2.04 | 1 | 0 | dichlorobenzene | insecticide |
procaine Procaine: A local anesthetic of the ester type that has a slow onset and a short duration of action. It is mainly used for infiltration anesthesia, peripheral nerve block, and spinal block. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1016).. procaine : A benzoate ester, formally the result of esterification of 4-aminobenzoic acid with 2-diethylaminoethanol but formed experimentally by reaction of ethyl 4-aminobenzoate with 2-diethylaminoethanol. | 2.04 | 1 | 0 | benzoate ester; substituted aniline; tertiary amino compound | central nervous system depressant; drug allergen; local anaesthetic; peripheral nervous system drug |
1,2,5,6-dibenzanthracene 1,2,5,6-dibenzanthracene: RN given refers to parent cpd | 2.04 | 1 | 0 | ortho-fused polycyclic arene | 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. | 2.04 | 1 | 0 | chlorocarbon; chloromethanes | hepatotoxic agent; refrigerant |
benz(a)anthracene benz(a)anthracene: 4 fused rings of which one is angular in contrast to the linear NAPHTHACENES. tetraphene : An angular ortho-fused polycyclic arene consisting of four fused benzene rings. | 2.04 | 1 | 0 | ortho-fused polycyclic arene; tetraphenes | |
ethinyl estradiol Ethinyl Estradiol: A semisynthetic alkylated ESTRADIOL with a 17-alpha-ethinyl substitution. It has high estrogenic potency when administered orally, and is often used as the estrogenic component in ORAL CONTRACEPTIVES.. 17alpha-ethynylestradiol : A 3-hydroxy steroid that is estradiol substituted by a ethynyl group at position 17. It is a xenoestrogen synthesized from estradiol and has been shown to exhibit high estrogenic potency on oral administration. | 2.01 | 1 | 0 | 17-hydroxy steroid; 3-hydroxy steroid; terminal acetylenic compound | xenoestrogen |
benzoxazolone benzoxazolone: RN given refers to parent cpd; structure. 2-benzoxazolinone : A member of the class of benzoxazoles that is 2,3-dihydro-1,3-benzoxazole carrying an oxo group at position 2. | 2.02 | 1 | 0 | benzoxazole | allelochemical; phytoalexin |
adenosine monophosphate Adenosine Monophosphate: Adenine nucleotide containing one phosphate group esterified to the sugar moiety in the 2'-, 3'-, or 5'-position. | 2.04 | 1 | 0 | adenosine 5'-phosphate; purine ribonucleoside 5'-monophosphate | adenosine A1 receptor agonist; cofactor; EC 3.1.3.1 (alkaline phosphatase) inhibitor; EC 3.1.3.11 (fructose-bisphosphatase) inhibitor; fundamental metabolite; micronutrient; nutraceutical |
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. | 2.04 | 1 | 0 | chloroethanes | polar solvent |
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. | 2.04 | 1 | 0 | chloroethanes | antipruritic drug; inhalation anaesthetic; local anaesthetic |
trichlorofluoromethane trichlorofluoromethane: refrigerant, aerosol propellant; RN given refers to parent cpd; structure. trichlorofluoromethane : A one-carbon compound that is methane in which the hydrogens have been replaced by three chlorine and one fluorine atom. | 2.04 | 1 | 0 | chlorofluorocarbon; halomethane | environmental contaminant; NMR chemical shift reference compound; NMR solvent; refrigerant |
pentachloroethane [no description available] | 2.04 | 1 | 0 | chloroethanes | non-polar solvent |
isopentane [no description available] | 2.04 | 1 | 0 | alkane | refrigerant |
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. | 2.04 | 1 | 0 | chloroethenes | inhalation anaesthetic; mouse 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. | 2.04 | 1 | 0 | chloroethanes | |
pantothenic acid Pantothenic Acid: A butyryl-beta-alanine that can also be viewed as pantoic acid complexed with BETA ALANINE. It is incorporated into COENZYME A and protects cells against peroxidative damage by increasing the level of GLUTATHIONE.. pantothenic acid : A member of the class of pantothenic acids that is an amide formed from pantoic acid and beta-alanine.. vitamin B5 : Any member of a group of vitamers that belong to the chemical structural class called pantothenic acids that exhibit biological activity against vitamin B5 deficiency. Deficiency of vitamin B5 is rare due to its widespread distribution in whole grain cereals, legumes and meat. Symptoms associated with vitamin B5 deficiency are difficult to asses since they are subtle and resemble those of other B vitamin deficiencies. The vitamers include (R)-pantothenic acid and its ionized and salt forms.. (R)-pantothenate : A pantothenate that is the conjugate base of (R)-pantothenic acid, obtained by deprotonation of the carboxy group.. (R)-pantothenic acid : A pantothenic acid having R-configuration. | 2.04 | 1 | 0 | pantothenic acid; vitamin B5 | antidote to curare poisoning; geroprotector; human blood serum metabolite |
acenaphthene [no description available] | 2.04 | 1 | 0 | acenaphthenes | |
7,8-dimethyl-10-[(2R,3R,4S)-2,3,4,5-tetrahydroxypentyl]benzo[g]pteridine-2,4-dione [no description available] | 2.04 | 1 | 0 | flavin | |
fluorene [no description available] | 2.04 | 1 | 0 | ortho-fused polycyclic arene; ortho-fused tricyclic hydrocarbon | |
1,2,3-trichlorobenzene trichlorobenzene: commercial grade of trichlorobenzene containing 70% 1,2,4-trichlorobenzene & 30% 1,2,3-trichlorobenzene; see also record for 1,2,4-trichlorobenzene. trichlorobenzene : Any member of the class of chlorobenzenes carrying three chloro substituents at unspecified positions.. 1,2,3-trichlorobenzene : A trichlorobenzene carrying chloro substituents at positions 1, 2 and 3. | 2.04 | 1 | 0 | trichlorobenzene | |
hexamethylbenzene hexamethylbenzene : A methylbenzene that is benzene in which all six hydrogens have been replaced by methyl groups. | 2.04 | 1 | 0 | methylbenzene | |
1-methylnaphthalene 1-methylnaphthalene : A methylnaphthalene carrying a methyl substituent at position 1. | 2.44 | 2 | 0 | methylnaphthalene | carcinogenic agent; plant metabolite |
1-chloronaphthalene 1-chloronaphthalene: word preservative; in xylamon the active ingredient is 60% 1-chloronaphthalene; structure in Merck Index, 9th ed, #2126 | 2.44 | 2 | 0 | | |
1-naphthol 1-naphthol: RN given refers to parent cpd. 1-naphthol : A naphthol carrying a hydroxy group at position 1.. hydroxynaphthalene : Any member of the class of naphthalenes that is naphthalene carrying one or more hydroxy groups. | 2.02 | 1 | 0 | naphthol | genotoxin; human xenobiotic metabolite |
2-methylnaphthalene 2-methylnaphthalene: RN given refers to parent cpd. 2-methylnaphthalene : A methylnaphthalene carrying a methyl substituent at position 2. | 2.44 | 2 | 0 | methylnaphthalene | |
2-chloronaphthalene 2-chloronaphthalene: structure in first source | 2.04 | 1 | 0 | | |
2-methylquinoline 2-methylquinoline: RN given refers to parent cpd. methylquinoline : Any member of the class of quinolines carrying at least one methyl substituent.. quinaldine : A quinoline compound in which the quinoline skeleton is substituted at C-2 with a methyl group. | 2.02 | 1 | 0 | quinolines | |
naphthacene tetracene : An acene that consists of four ortho-fused benzene rings in a rectilinear arrangement. | 2.04 | 1 | 0 | acene; tetracenes | |
diphenyl diphenyl: RN given refers to unlabeled cpd; structure | 2.44 | 2 | 0 | aromatic fungicide; benzenes; biphenyls | antifungal agrochemical; antimicrobial food preservative |
2-methoxynaphthalene [no description available] | 2.02 | 1 | 0 | naphthalenes | |
indene indene: structure in first source. 1H-indene : An ortho-fused bicyclic arene comprising of benzene and cyclopentene rings. | 2.02 | 1 | 0 | indene; ortho-fused bicyclic arene | |
benzothiophene [no description available] | 2.02 | 1 | 0 | 1-benzothiophenes; benzothiophene | |
2-xylene 2-xylene: RN given refers to parent cpd. o-xylene : A xylene substituted by methyl groups at positions 1 and 2. | 2.44 | 2 | 0 | xylene | |
2-chlorotoluene 2-chlorotoluene: RN given refers to parent cpd | 2.04 | 1 | 0 | | |
2-dichlorobenzene 2-dichlorobenzene: structure. 1,2-dichlorobenzene : A dichlorobenzene carrying chloro substituents at positions 1 and 2. | 2.04 | 1 | 0 | dichlorobenzene | hepatotoxic agent; metabolite |
pseudocumene 1,2,4-trimethylbenzene : A trimethylbenzene carrying methyl groups at positions 1, 2 and 4. | 2.04 | 1 | 0 | trimethylbenzene | neurotoxin |
durene durene: structure. durene : A tetramethylbenzene carrying methyl groups at positions 1, 2, 4 and 5. | 2.04 | 1 | 0 | tetramethylbenzene | |
1,2,4,5-tetrachlorobenzene 1,2,4,5-tetrachlorobenzene : A tetrachlorobenzene carrying chloro groups at positions 1, 2, 4 and 5. | 2.04 | 1 | 0 | tetrachlorobenzene | |
tert-butylbenzene [no description available] | 2.4 | 2 | 0 | | |
cumene cumene : An alkylbenzene that is benzene carrying an isopropyl group. | 2.04 | 1 | 0 | alkylbenzene | |
4-cymene 4-cymene: structure. p-cymene : A monoterpene that is toluene substituted by an isopropyl group at position 4. | 2.04 | 1 | 0 | monoterpene; toluenes | human urinary metabolite; plant metabolite; volatile oil component |
ethylbenzene [no description available] | 2.95 | 4 | 0 | alkylbenzene | |
1,2-dihydrostilbene 1,2-dihydrostilbene: intermdiate in biosynthesis of dihydrophenanthrenes from phenylalanine. 1,2-dihydrostilbene : A diphenylethane that is the 1,2-dihydro derivative of stilbene. | 2.04 | 1 | 0 | diphenylethane | |
n-propylbenzene n-propylbenzene: RN given refers to parent cpd. propylbenzene : An alkylbenzene that is benzene having one of its aromatic hydrogens substituted by a propyl group. | 2.97 | 4 | 0 | alkylbenzene | |
xi-gamma-Undecalactone [no description available] | 2.02 | 1 | 0 | lactone | |
1,4-dibromobenzene [no description available] | 2.04 | 1 | 0 | dibromobenzene | |
4-xylene p-xylene : A xylene with methyl groups at positions 1 and 4. | 2.75 | 3 | 0 | xylene | |
4-chlorotoluene 4-chlorotoluene: RN given refers to unlabeled cpd | 2.04 | 1 | 0 | monochlorobenzenes | |
ethylene dibromide Ethylene Dibromide: An effective soil fumigant, insecticide, and nematocide. In humans, it causes severe burning of skin and irritation of the eyes and respiratory tract. Prolonged inhalation may cause liver necrosis. It is also used in gasoline. Members of this group have caused liver and lung cancers in rodents. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), 1,2-dibromoethane may reasonably be anticipated to be a carcinogen.. 1,2-dibromoethane : A bromoalkane that is ethane carrying bromo substituents at positions 1 and 2. It is produced by marine algae. | 2.04 | 1 | 0 | bromoalkane; bromohydrocarbon | algal metabolite; carcinogenic agent; fumigant; marine metabolite; mouse metabolite; mutagen |
butane butane : A straight chain alkane composed of 4 carbon atoms. | 2.04 | 1 | 0 | alkane; gas molecular entity | food propellant; refrigerant |
1-butene but-1-ene : A butene with unsaturation at position 1. | 2.04 | 1 | 0 | butene | |
2-methylpentane Hexanes: Six-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives. Various polyneuropathies are caused by hexane poisoning. | 2.46 | 2 | 0 | alkane | |
gamma-valerolactone gamma-valerolactone: metabolite of n-hexane; RN given refers to cpd with methyl moiety in position 5. gamma-valerolactone : A butan-4-olide that is dihydrofuran-2(3H)-one substituted by a methyl group at position 5. It has been found in the urine samples of humans exposed to n-hexane. | 2.02 | 1 | 0 | butan-4-olide | flavouring agent; human xenobiotic metabolite |
3-xylene m-xylene : A xylene carrying methyl groups at positions 1 and 3. | 2.44 | 2 | 0 | xylene | |
3-chlorophenol 3-chlorophenol : A monochlorophenol carrying the chloro substituent at position 3. | 2.02 | 1 | 0 | monochlorophenol | |
mesitylene mesitylene: structure. 1,3,5-trimethylbenzene : A trimethylbenzene carrying methyl substituents at positions 1, 3 and 5. | 2.04 | 1 | 0 | trimethylbenzene | |
1,3,5-trichlorobenzene 1,3,5-trichlorobenzene: structure in first source. 1,3,5-trichlorobenzene : A trichlorobenzene carrying chloro substituents at positions 1, 3 and 5. | 2.04 | 1 | 0 | trichlorobenzene | |
bromobenzene [no description available] | 2.04 | 1 | 0 | bromoarene; bromobenzenes; volatile organic compound | hepatotoxic agent; mouse metabolite; non-polar solvent |
chlorobenzene [no description available] | 2.04 | 1 | 0 | monochlorobenzenes | solvent |
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. | 2.04 | 1 | 0 | alkane; volatile organic compound | non-polar solvent; refrigerant |
1-pentene 1-pentene: structure in first source | 2.04 | 1 | 0 | | |
butyl chloride butyl chloride: structure | 2.04 | 1 | 0 | | |
n-hexane hexane : An unbranched alkane containing six carbon atoms. | 2.46 | 2 | 0 | alkane; volatile organic compound | neurotoxin; 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. | 2.46 | 2 | 0 | cycloalkane; volatile organic compound | non-polar solvent |
cyclohexene cyclohexene : A cycloalkene that is cylohexane with a single double bond. | 2.04 | 1 | 0 | cycloalkene | |
1-octene 1-octene: RN given refers to parent cpd. 1-octene : An octene with an unsaturation C-1. | 2.02 | 1 | 0 | octene | |
nonane iotrochotin: toxin from the Caribbean sponge Iotrochota birotulata, which selectively permeabilizes synaptosomes. nonane : A straight chain alkane composed of 9 carbon atoms. | 2.04 | 1 | 0 | alkane | plant metabolite; volatile oil component |
hexachlorobenzene Hexachlorobenzene: An agricultural fungicide and seed treatment agent.. hexachlorobenzene : A member of the class of chlorobenzenes that is benzene in which all of the hydrogens are replaced by chlorines. An agricultural fungicide introduced in the mid-1940s and formerly used as a seed treatment, its use has been banned since 1984 under the Stockholm Convention on Persistent Organic Pollutants. | 2.04 | 1 | 0 | aromatic fungicide; chlorobenzenes | antifungal agrochemical; carcinogenic agent; persistent organic pollutant |
anthracene acene : A polycyclic aromatic hydrocarbon consisting of fused benzene rings in a rectilinear arrangement.. acenes : Polycyclic aromatic hydrocarbons consisting of fused benzene rings in a rectilinear arrangement and their substitution derivatives. | 2.04 | 1 | 0 | acene; anthracenes; ortho-fused tricyclic hydrocarbon | |
2-naphthol 2-naphthol: RN given refers to parent cpd. 2-naphthol : A naphthol carrying a hydroxy group at position 2.. naphthols : Any hydroxynaphthalene derivative that has a single hydroxy substituent. | 2.02 | 1 | 0 | naphthol | antinematodal drug; genotoxin; human urinary metabolite; human xenobiotic metabolite; mouse metabolite; radical scavenger |
sec-butylbenzene sec-butylbenzene : An alkylbenzene that is benzene substituted by a butan-2-yl group. | 1.97 | 1 | 0 | alkylbenzene | |
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). | 2.04 | 1 | 0 | alkane; volatile organic compound | non-polar solvent; plant metabolite |
1,12-benzoperylene 1,12-benzoperylene: structure; see also record for benzoperylene | 2.04 | 1 | 0 | ortho- and peri-fused polycyclic arene | |
benzo(e)pyrene benzo(e)pyrene: RN given refers to parent cpd. benzo[e]pyrene : An ortho- and peri-fused polycyclic arene consisting of five fused benzene rings. It is listed as a Group 3 carcinogen by the IARC. | 2.04 | 1 | 0 | ortho- and peri-fused polycyclic arene | carcinogenic agent; mutagen |
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. | 2.04 | 1 | 0 | ortho- and peri-fused polycyclic arene; perylenes | |
benzo(j)fluoranthene benzo(j)fluoranthene: dihydrodiol metabolites identified as mutagens; structure given in first source | 2.04 | 1 | 0 | naphthalenes | |
benzo(b)fluoranthene benzo[b]fluoranthene : An ortho- and peri-fused polycyclic arene that consists of a benzene ring fused with a acephenanthrylene ring. | 2.04 | 1 | 0 | ortho- and peri-fused polycyclic arene | mutagen |
fluoranthene fluoranthene: structure. fluoranthene : An ortho- and peri-fused polycyclic arene consisting of a naphthalene and benzene unit connected by a five-membered ring. | 2.04 | 1 | 0 | ortho- and peri-fused polycyclic arene | |
benzo(k)fluoranthene [no description available] | 2.04 | 1 | 0 | naphthalenes | |
triphenylene triphenylene: structure. triphenylene : An ortho-fused polycyclic arene consisting of four fused benzene rings. | 2.04 | 1 | 0 | ortho-fused polycyclic arene | |
chrysene chrysene: structure in Merck Index, 9th ed, #2252. chrysene : An ortho-fused polycyclic arene found commonly in the coal tar. | 2.04 | 1 | 0 | ortho-fused polycyclic arene | plant metabolite |
dibenzo(aj)anthracene dibenzo(aj)anthracene: structure in first source | 2.04 | 1 | 0 | phenanthrenes | |
benzo(a)fluorene benzo(a)fluorene: structure in first source | 2.04 | 1 | 0 | carbotetracyclic compound | |
benzo(b)fluorene benzo(b)fluorene: structure in first source | 2.04 | 1 | 0 | carbotetracyclic compound | |
benzofuran benzofuran: RN & structure given in first source. 1-benzofuran : A benzofuran consisting of fused benzene and furan rings. It is the parent compound of the class of 1-benzofurans. | 2.02 | 1 | 0 | 1-benzofurans; benzofuran | |
adamantane Adamantane: A tricyclo bridged hydrocarbon. | 2.04 | 1 | 0 | adamantanes; polycyclic alkane | |
cyclopentane Cyclopentanes: A group of alicyclic hydrocarbons with the general formula R-C5H9.. cyclopentanes : Cyclopentane and its derivatives formed by substitution. | 2.04 | 1 | 0 | cycloalkane; cyclopentanes; volatile organic compound | non-polar solvent |
cyclooctane [no description available] | 2.04 | 1 | 0 | | |
2-fluoroaniline 2-fluoroaniline: structure given in first source; RN given refers to parent compound. 2-fluoroaniline : A derivative of aniline in which the hydrogen at position 2 has been substituted by fluorine. It is used as a pharmaceutical intermediate | 2.02 | 1 | 0 | fluoroaniline; primary arylamine | |
diethyl sulfide ethyl sulfide : An aliphatic sulfide in which the sulfur atom is bonded to at least one ethyl group.. diethyl sulfide : An ethyl sulfide compound having two ethyl groups attached to a sulfur atom. | 2.04 | 1 | 0 | ethyl sulfide | |
fluorobenzenes Fluorobenzenes: Derivatives of BENZENE that contain FLUORINE.. monofluorobenzene : The simplest member of the class of monofluorobenzenes that is benzene carrying a single fluoro substituent.. fluorobenzenes : Any fluoroarene that is a benzene or a substituted benzene carrying at least one fluoro group. | 2.04 | 1 | 0 | monofluorobenzenes | NMR chemical shift reference compound |
cholanthrene cholanthrene: structure given in first source | 2.04 | 1 | 0 | | |
menadiol [no description available] | 2.04 | 1 | 0 | methylnaphthalenes; naphthalenediols; naphthohydroquinone | |
indan indan: structure in first source. indane : An ortho-fused bicyclic hydrocarbon consisting of a benzene ring fused to a cyclopentane ring; a high-boiling (176 (o)C) colourless liquid. | 2.02 | 1 | 0 | indanes; ortho-fused bicyclic hydrocarbon | |
coumaran 2,3-dihydrobenzofuran : A member of the class of 1-benzofurans that is the 2,3-dihydroderivative of benzofuran. | 2.02 | 1 | 0 | 1-benzofurans | metabolite |
caprolactone hexano-6-lactone : A epsilon-lactone that is oxepane substituted by an oxo group at position 2. | 2.02 | 1 | 0 | epsilon-lactone | |
hemimellitene hemimellitene: structure. 1,2,3-trimethylbenzene : A trimethylbenzene carrying methyl groups at positions 1, 2 and 3. It has been found in Centaurium erythraea. | 2.04 | 1 | 0 | trimethylbenzene | neurotoxin; plant metabolite |
1-chloropropane 1-chloropropane: structure in first source | 2.04 | 1 | 0 | | |
2,2,4-trimethylpentane 2,2,4-trimethylpentane: nephrotoxic. isooctane : An alkane that consists of pentane bearing two methyl substituents at position 2 and a single methyl substituent at position 4. | 2.04 | 1 | 0 | alkane; volatile organic compound | fuel additive; nephrotoxin; non-polar solvent |
1,3-dichlorobenzene 1,3-dichlorobenzene : A dichlorobenzene carrying chloro substituents at positions 1 and 3. | 2.04 | 1 | 0 | dichlorobenzene | |
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. | 2.08 | 1 | 0 | dialdehyde | biomarker |
1-chlorohexane [no description available] | 2.04 | 1 | 0 | | |
1,4-dimethylnaphthalene 1,4-dimethylnaphthalene : A dimethylnaphthalene carrying methyl groups at positions 1 and 4. | 2.44 | 2 | 0 | dimethylnaphthalene | |
1,2-dimethylnaphthalene 1,2-dimethylnaphthalene : A dimethylnaphthalene carrying methyl groups at positions 1 and 2.. dimethylnaphthalene : Any member of the class of naphthalenes carrying two methyl groups at unspecified positions. | 2.02 | 1 | 0 | dimethylnaphthalene | |
1,6-dimethylnaphthalene 1,6-dimethylnaphthalene: structure in first source | 2.02 | 1 | 0 | dimethylnaphthalene | |
2,6-dimethylnaphthalene 2,6-dimethylnaphthalene: RN given refers to parent cpd. 2,6-dimethylnaphthalene : A dimethylnaphthalene carrying methyl groups at positions 2 and 6. | 2.44 | 2 | 0 | dimethylnaphthalene | environmental contaminant |
1,2-dibromobenzene dibromobenzene : Any member of the class of bromobenzenes that consists of a benzene or a substituted benzene ring carrying two bromo groups at unspecified positions. | 2.04 | 1 | 0 | dibromobenzene | |
iodobenzene iodobenzene: RN given refers to unlabeled parent cpd | 2.04 | 1 | 0 | | |
1-hexene 1-hexene: structure in first source. 1-hexene : An alkene that is hexane carrying a double bond at position 1. | 2.04 | 1 | 0 | alkene | |
pentachlorobenzene pentachlorobenzene: structure. pentachlorobenzene : A member of the class of pentachlorobenzenes that is benzene in which five of the hydrogens are replaced by chlorines. Now classed as a persistent organic pollutant under the Stockholm Convention. | 2.04 | 1 | 0 | pentachlorobenzenes | persistent organic pollutant |
3-methylquinoline [no description available] | 2.02 | 1 | 0 | methylquinoline | xenobiotic |
2-methylanthracene 2-methylanthracene: structure given in first source | 2.04 | 1 | 0 | | |
3-ethyltoluene [no description available] | 2.02 | 1 | 0 | toluenes | |
4-ethyltoluene [no description available] | 2.02 | 1 | 0 | | |
1,2,3,4-tetrachlorobenzene 1,2,3,4-tetrachlorobenzene : A tetrachlorobenzene carrying chloro groups at positions 1, 2 , 3 and 4.. tetrachlorobenzene : Any member of the class of chlorobenzenes carrying four chloro groups at unspecified positions. | 2.04 | 1 | 0 | tetrachlorobenzene | |
1,2,3,5-tetrachlorobenzene 1,2,3,5-tetrachlorobenzene : A tetrachlorobenzene carrying chloro groups at positions 1, 2, 3 and 5. | 2.04 | 1 | 0 | tetrachlorobenzene | |
4-hexanolide gamma-caprolactone : A gamma-lactone that is oxolan-2-one substituted by an ethyl group at position 5. | 2.02 | 1 | 0 | butan-4-olide | human blood serum metabolite |
decan-4-olide gamma-decalactone : A gamma-lactone that is oxolan-2-one substituted by a hexyl group at position 5. | 2.02 | 1 | 0 | gamma-lactone; tetrahydrofuranone | anticonvulsant; flavouring agent; food additive |
9-methylanthracene [no description available] | 2.04 | 1 | 0 | | |
9,10-dimethylanthracene 9,10-dimethylanthracene: RN given refers to parent ion | 2.04 | 1 | 0 | | |
2,6-dimethylquinoline 2,6-dimethylquinoline: from roots of Peucedanum praeruptorum II | 2.02 | 1 | 0 | | |
undecane undecane : A straight-chain alkane with 11 carbon atoms. | 2.04 | 1 | 0 | alkane | |
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. | 2.04 | 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 |
6-methylchrysene 6-methylchrysene: RN given refers to parent cpd; structure given in first source | 2.04 | 1 | 0 | carbopolycyclic compound | |
decane decane : A straight-chain alkane with 10 carbon atoms. | 2.04 | 1 | 0 | alkane | |
4-chlorobiphenyl 4-chlorobiphenyl : A monochlorobiphenyl carrying a chloro substituent at position 4. | 2.02 | 1 | 0 | monochlorobiphenyl | |
gamma-dodecalactone gamma-dodecalactone: structure in first source. gamma-dodecalactone : A gamma-lactone that is oxolan-2-one substituted by an octyl group at position 5. | 2.02 | 1 | 0 | gamma-lactone | bacterial metabolite; fungal metabolite; volatile oil component |
12-methylbenzanthracene [no description available] | 2.04 | 1 | 0 | | |
2-methylphenanthrene [no description available] | 2.04 | 1 | 0 | | |
7-methylbenzanthracene [no description available] | 2.04 | 1 | 0 | | |
tert-butylcyclohexane [no description available] | 2.02 | 1 | 0 | | |
5-methylchrysene 5-methylchrysene: methylchrysenes in tobacco smoke are suspected to contribute to tumorigenicity of this inhalant; RN given refers to unlabeled cpd; structure | 2.04 | 1 | 0 | carbopolycyclic compound | |
5,6-dimethylchrysene 5,6-dimethylchrysene: structure given in first source | 2.04 | 1 | 0 | | |
7-ethylbenz(a)anthracene [no description available] | 2.04 | 1 | 0 | | |
4-anisaldehyde 4-anisaldehyde: RN given refers to cpd with specified locants for methoxy moieties; structure in Merck, 9th ed, #696. p-methoxybenzaldehyde : A member of the class of benzaldehydes consisting of benzaldehyde itself carrying a methoxy substituent at position 4. | 2.02 | 1 | 0 | benzaldehydes | bacterial metabolite; human urinary metabolite; insect repellent; plant metabolite |
tetrachloroethylene Tetrachloroethylene: A chlorinated hydrocarbon used as an industrial solvent and cooling liquid in electrical transformers. It is a potential carcinogen. | 2.04 | 1 | 0 | chlorocarbon; chloroethenes | nephrotoxic agent |
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. | 2.04 | 1 | 0 | ortho- and peri-fused polycyclic arene | fluorescent probe; persistent organic pollutant |
alkenes [no description available] | 2.02 | 1 | 0 | | |
2,3,4,5-tetrachlorobiphenyl tetrachlorobiphenyl : Any polychlorobiphenyl with molecular formula C12H6Cl4. | 2.04 | 1 | 0 | tetrachlorobenzene; tetrachlorobiphenyl | |
2,5-dichlorobiphenyl 2,5-dichlorobiphenyl : A dichlorobiphenyl that is p-dichlorobenzene in which one of the hydrogens has been replaced by a phenyl group. | 2.04 | 1 | 0 | dichlorobenzene; dichlorobiphenyl | |
2,4'-dichlorobiphenyl 2,4'-dichlorobiphenyl: RN given refers to unlabeled cpd. 2,4'-dichlorobiphenyl : A dichlorobiphenyl that is chlorobenzene in which the hydrogen at position 2 has been replaced by a 4-chlorophenyl group. | 2.04 | 1 | 0 | dichlorobiphenyl; monochlorobenzenes | |
2,4,6-trichlorobiphenyl 2,4,6-trichlorobiphenyl: structure given in first source | 2.04 | 1 | 0 | | |
2(3h)-benzofuranone 2(3H)-benzofuranone: structure in first source | 2.02 | 1 | 0 | | |
nicotine (S)-nicotine : A 3-(1-methylpyrrolidin-2-yl)pyridine in which the chiral centre has S-configuration. The naturally occurring and most active enantiomer of nicotine, isolated from Nicotiana tabacum. | 2.02 | 1 | 0 | 3-(1-methylpyrrolidin-2-yl)pyridine | anxiolytic drug; biomarker; immunomodulator; mitogen; neurotoxin; nicotinic acetylcholine receptor agonist; peripheral nervous system drug; phytogenic insecticide; plant metabolite; psychotropic drug; teratogenic agent; xenobiotic |
1,2,4-trimethylcyclohexane 1,2,4-trimethylcyclohexane: structure given in first source | 2.08 | 1 | 0 | | |
hydroxyl radical Hydroxyl Radical: The univalent radical OH. Hydroxyl radical is a potent oxidizing agent. | 2.08 | 1 | 0 | oxygen hydride; oxygen radical; reactive oxygen species | |
biotin vitamin B7 : Any member of a group of vitamers that belong to the chemical structural class called biotins that exhibit biological activity against vitamin B7 deficiency. Vitamin B7 deficiency is very rare in individuals who take a normal balanced diet. Foods rich in biotin are egg yolk, liver, cereals, vegetables (spinach, mushrooms) and rice. Symptoms associated with vitamin B7 deficiency include thinning hair, scaly skin rashes around eyes, nose and mouth, and brittle nails. The vitamers include biotin and its ionized and salt forms. | 2.04 | 1 | 0 | biotins; vitamin B7 | coenzyme; cofactor; Escherichia coli metabolite; fundamental metabolite; human metabolite; mouse metabolite; nutraceutical; prosthetic group; Saccharomyces cerevisiae metabolite |
2-chlorobiphenyl 2-chlorobiphenyl: RN from Toxlit. 2-chlorobiphenyl : A monochlorobiphenyl carrying a single chloro substituent at position 2.. monochlorobiphenyl : A chlorobiphenyl carrying a single chloro substituent at unspecified position.. chlorobiphenyl : A chloroarene that consists of a biphenyl skeleton substituted by one or more chloro groups. | 2.44 | 2 | 0 | monochlorobiphenyl | |
7-dehydrocholesterol [no description available] | 2.04 | 1 | 0 | 3beta-hydroxy-Delta(5)-steroid; 3beta-sterol; cholestanoid; Delta(5),Delta(7)-sterol | human metabolite; mouse metabolite |
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). | 2.04 | 1 | 0 | retinol; vitamin A | human metabolite; mouse metabolite; plant metabolite |
cotinine Cotinine: The N-glucuronide conjugate of cotinine is a major urinary metabolite of NICOTINE. It thus serves as a biomarker of exposure to tobacco SMOKING. It has CNS stimulating properties.. (-)-cotinine : An N-alkylpyrrolidine that consists of N-methylpyrrolidinone bearing a pyridin-3-yl substituent at position C-5 (the 5S-enantiomer). It is an alkaloid commonly found in Nicotiana tabacum. | 2.02 | 1 | 0 | N-alkylpyrrolidine; pyridines; pyrrolidin-2-ones; pyrrolidine alkaloid | antidepressant; biomarker; human xenobiotic metabolite; plant metabolite |
vitamin d 2 Ergocalciferols: Derivatives of ERGOSTEROL formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. They differ from CHOLECALCIFEROL in having a double bond between C22 and C23 and a methyl group at C24.. vitamin D2 : A vitamin D supplement and has been isolated from alfalfa. | 2.04 | 1 | 0 | hydroxy seco-steroid; seco-ergostane; vitamin D | bone density conservation agent; nutraceutical; plant metabolite; rodenticide |
cholecalciferol Cholecalciferol: Derivative of 7-dehydroxycholesterol formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. It differs from ERGOCALCIFEROL in having a single bond between C22 and C23 and lacking a methyl group at C24.. calciol : A hydroxy seco-steroid that is (5Z,7E)-9,10-secocholesta-5,7,10(19)-triene in which the pro-S hydrogen at position 3 has been replaced by a hydroxy group. It is the inactive form of vitamin D3, being hydroxylated in the liver to calcidiol (25-hydroxyvitamin D3), which is then further hydroxylated in the kidney to give calcitriol (1,25-dihydroxyvitamin D3), the active hormone. | 2.04 | 1 | 0 | D3 vitamins; hydroxy seco-steroid; seco-cholestane; secondary alcohol; steroid hormone | geroprotector; human metabolite |
rutin Hydroxyethylrutoside: Monohydroxyethyl derivative of rutin. Peripheral circulation stimulant used in treatment of venous disorders. | 2.04 | 1 | 0 | disaccharide derivative; quercetin O-glucoside; rutinoside; tetrahydroxyflavone | antioxidant; metabolite |
vitamin k 1 Vitamin K 1: A family of phylloquinones that contains a ring of 2-methyl-1,4-naphthoquinone and an isoprenoid side chain. Members of this group of vitamin K 1 have only one double bond on the proximal isoprene unit. Rich sources of vitamin K 1 include green plants, algae, and photosynthetic bacteria. Vitamin K1 has antihemorrhagic and prothrombogenic activity.. phylloquinone : A member of the class of phylloquinones that consists of 1,4-naphthoquinone having methyl and phytyl groups at positions 2 and 3 respectively. The parent of the class of phylloquinones. | 2.04 | 1 | 0 | phylloquinones; vitamin K | cofactor; human metabolite; plant metabolite |
vitamin a2 vitamin A2: RN given refers to cpd without isomeric designation. all-trans-3,4-didehydroretinol : A retinoid derived from 3,4-desaturation of the beta-ionone ring of all-trans-retinol. | 2.04 | 1 | 0 | retinoid; vitamin A | human xenobiotic metabolite; marine xenobiotic metabolite; mouse metabolite |
glycolipids [no description available] | 2 | 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. | 2.04 | 1 | 0 | ascorbic acid; vitamin C | coenzyme; cofactor; flour treatment agent; food antioxidant; food colour retention agent; geroprotector; plant metabolite; skin lightening agent |
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. | 2.17 | 1 | 0 | | |
folic acid folcysteine: used to promote fertility in chickens. vitamin B9 : Any B-vitamin that exhibits biological activity against vitamin B9 deficiency. Vitamin B9 refers to the many forms of folic acid and its derivatives, including tetrahydrofolic acid (the active form), methyltetrahydrofolate (the primary form found in blood), methenyltetrahydrofolate, folinic acid amongst others. They are present in abundance in green leafy vegetables, citrus fruits, and animal products. Lack of vitamin B9 leads to anemia, a condition in which the body cannot produce sufficient number of red blood cells. Symptoms of vitamin B9 deficiency include fatigue, muscle weakness, and pale skin. | 2.04 | 1 | 0 | folic acids; N-acyl-amino acid | human metabolite; mouse metabolite; nutrient |