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). | 2.13 | 1 | 0 | alkane;
gas molecular entity;
mononuclear parent hydride;
one-carbon compound | bacterial metabolite;
fossil fuel;
greenhouse gas |
iodine
Iodine: A nonmetallic element of the halogen group that is represented by the atomic symbol I, atomic number 53, and atomic weight of 126.90. It is a nutritionally essential element, especially important in thyroid hormone synthesis. In solution, it has anti-infective properties and is used topically.. diiodine : Molecule comprising two covalently bonded iodine atoms with overall zero charge.. | 2.98 | 4 | 0 | diatomic iodine | nutrient |
purine
1H-purine : The 1H-tautomer of purine.. 3H-purine : The 3H-tautomer of purine.. 9H-purine : The 9H-tautomer of purine.. 7H-purine : The 7H-tautomer of purine. | 2.11 | 1 | 0 | purine | |
sulfuric acid
sulfuric acid : A sulfur oxoacid that consists of two oxo and two hydroxy groups joined covalently to a central sulfur atom. | 2.44 | 2 | 0 | sulfur oxoacid | catalyst |
2-amino-4-picoline
2-amino-4-picoline: RN given refers to parent cpd | 2.11 | 1 | 0 | | |
pargyline
Pargyline: A monoamine oxidase inhibitor with antihypertensive properties. | 2.1 | 1 | 0 | aromatic amine | |
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. | 2.05 | 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 |
galactose
galactopyranose : The pyranose form of galactose. | 7.52 | 2 | 0 | D-galactose;
galactopyranose | Escherichia coli metabolite;
mouse metabolite |
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. | 2.01 | 1 | 0 | benzenes;
primary alcohol | Aspergillus metabolite;
fragrance;
plant growth retardant;
plant metabolite;
Saccharomyces cerevisiae metabolite |
4-toluenesulfonic acid
4-toluenesulfonic acid: RN given refers to parent cpd; other RNs in 9th CI Form Index. toluene-4-sulfonic acid : An arenesulfonic acid that is benzenesulfonic acid in which the hydrogen at position 4 is replaced by a methyl group. | 2.08 | 1 | 0 | arenesulfonic acid;
toluenes | |
cordycepin
[no description available] | 7.06 | 1 | 0 | 3'-deoxyribonucleoside;
adenosines | antimetabolite;
nucleoside antibiotic |
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. | 2.15 | 1 | 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 |
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. | 2.04 | 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. | 2.03 | 1 | 0 | fluoroalkanoic acid | human xenobiotic metabolite;
NMR chemical shift reference compound;
reagent |
dichlorodicyanobenzoquinone
dichlorodicyanobenzoquinone: request from searcher | 2.03 | 1 | 0 | | |
propargyl alcohol
propargyl alcohol: irreversibly inactivates alcohol oxidase; RN given refers to parent cpd. prop-2-yn-1-ol : A terminal acetylenic compound that is prop-2-yne substituted by a hydroxy group at position 1. | 3.04 | 4 | 0 | propynol;
terminal acetylenic compound;
volatile organic compound | antifungal agent;
Saccharomyces cerevisiae metabolite |
2-methylpentane
Hexanes: Six-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives. Various polyneuropathies are caused by hexane poisoning. | 2.07 | 1 | 0 | alkane | |
thiophenol
thiophenol : A thiol in which the sulfanyl group is attached to a phenyl group. | 7.45 | 2 | 0 | aryl thiol | |
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. | 2.48 | 2 | 0 | pyrrole;
secondary amine | |
n-methylpyrrolidine
N-methylpyrrolidine: RN given refers to parent cpd | 2.02 | 1 | 0 | | |
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. | 2.1 | 1 | 0 | 1,3-oxazoles;
mancude organic heteromonocyclic parent;
monocyclic heteroarene | |
propadiene
[no description available] | 2.03 | 1 | 0 | allenes | |
oxetane
oxetane: structure. oxetane : A saturated organic heteromonocyclic parent that is a four-membered ring comprising of three carbon atoms and an oxygen atom. | 2.11 | 1 | 0 | oxetanes;
saturated organic heteromonocyclic parent | |
silver
Silver: An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA. | 2.07 | 1 | 0 | copper group element atom;
elemental silver | Escherichia coli metabolite |
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. | 7.46 | 2 | 0 | copper group element atom;
elemental gold | |
silver nitrate
Silver Nitrate: A silver salt with powerful germicidal activity. It has been used topically to prevent OPHTHALMIA NEONATORUM. | 2.08 | 1 | 0 | inorganic nitrate salt;
silver salt | astringent |
galactose
aldohexose : A hexose with a (potential) aldehyde group at one end. | 2.02 | 1 | 0 | | |
iodine
[no description available] | 2.11 | 1 | 0 | halide anion;
monoatomic iodine | human metabolite |
sodium azide
Sodium Azide: A cytochrome oxidase inhibitor which is a nitridizing agent and an inhibitor of terminal oxidation. (From Merck Index, 12th ed). sodium azide : The sodium salt of hydrogen azide (hydrazoic acid). | 2.1 | 1 | 0 | inorganic sodium salt | antibacterial agent;
explosive;
mitochondrial respiratory-chain inhibitor;
mutagen |
azides
Azides: Organic or inorganic compounds that contain the -N3 group.. azide : Any nitrogen molecular entity containing the group -N3. | 2.52 | 2 | 0 | pseudohalide anion | mitochondrial respiratory-chain inhibitor |
adenosine
quinquefolan B: isolated from roots of Panax quinquefolium L.; RN not in Chemline 10/87; RN from Toxlit | 7.47 | 2 | 0 | adenosines;
purines D-ribonucleoside | analgesic;
anti-arrhythmia drug;
fundamental metabolite;
human metabolite;
vasodilator agent |
trichloroacetamide
[no description available] | 2.04 | 1 | 0 | | |
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. | 3.44 | 7 | 0 | one-carbon compound;
perfluoroalkanesulfonic acid | |
glucose, (beta-d)-isomer
beta-D-glucose : D-Glucopyranose with beta configuration at the anomeric centre.. (1->4)-beta-D-glucan : A beta-D-glucan in which the glucose units are connected by (1->4) linkages.. (1->3)-beta-D-glucan : A beta-D-glucan in which the glucose units are connected by (1->3) linkages. | 2.42 | 2 | 0 | D-glucopyranose | epitope;
mouse metabolite |
trimethylsilyl trifluoromethanesulfonate
trimethylsilyl trifluoromethanesulfonate: deprotecting cpd for peptides | 2.74 | 3 | 0 | | |
bromosuccinimide
Bromosuccinimide: A brominating agent that replaces hydrogen atoms in benzylic or allylic positions. It is used in the oxidation of secondary alcohols to ketones and in controlled low-energy brominations. (From Miall's Dictionary of Chemistry, 5th ed; Hawley's Condensed Chemical Dictionary, 12th ed,). | 2.78 | 3 | 0 | dicarboximide;
organobromine compound;
pyrrolidinone | reagent |
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. | 2.53 | 2 | 0 | 1,2,3-triazole | |
formamidine
formamidine: RN given refers to parent compound. formamidine : The smallest member of the class of carboxamidines being formic acid with the O and OH groups from the carboxy function replaced by NH and NH2 groups respectively. The parent of the class of formamidines. | 2.13 | 1 | 0 | carboxamidine;
formamidines;
one-carbon compound | EC 1.14.13.39 (nitric oxide synthase) inhibitor |
azidotrimethylsilane
azidotrimethylsilane: structure in first source | 2.52 | 2 | 0 | | |
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). | 2.13 | 1 | 0 | carbene;
methanediyl | |
hypoiodous acid
[no description available] | 2.31 | 1 | 0 | iodine oxoacid | |
dehydroalanine
2-ammonioprop-2-enoate : An amino acid zwitterion resulting from a transfer of a proton from the carboxy group to the amino group of 2-aminoacrylic acid.. 2-aminoacrylic acid : A 2,3-dehydroamino acid that is alanine which has been dehydrogenated to introduce a double bond between positions 2 and 3. | 2.05 | 1 | 0 | 2,3-dehydroamino acid;
alpha,beta-unsaturated monocarboxylic acid;
amino acid zwitterion;
enamine;
non-proteinogenic alpha-amino acid | alkylating agent;
human metabolite;
mouse metabolite |
n-succinimidyl 3-(trimethylstannyl)benzoate
N-succinimidyl 3-(trimethylstannyl)benzoate: structure given in first source | 7 | 1 | 0 | | |
xylose
xylopyranose: structure in first source | 2.02 | 1 | 0 | D-xylose | |
cellulose triacetate
cellulose triacetate: for hemodialysis filtration | 2.11 | 1 | 0 | | |
2-oxindole
2-oxindole: RN given refers to parent cpd; structure. indolin-2-one : An indolinone carrying an oxo group at position 2. | 2.08 | 1 | 0 | gamma-lactam;
indolinone | |
dihydropyridines
Dihydropyridines: Pyridine moieties which are partially saturated by the addition of two hydrogen atoms in any position. | 7.08 | 1 | 0 | | |
n-acetylneuraminic acid
N-Acetylneuraminic Acid: An N-acyl derivative of neuraminic acid. N-acetylneuraminic acid occurs in many polysaccharides, glycoproteins, and glycolipids in animals and bacteria. (From Dorland, 28th ed, p1518). N-acetylneuraminic acid : An N-acylneuraminic acid where the N-acyl group is specified as acetyl. | 2.03 | 1 | 0 | N-acetylneuraminic acids | antioxidant;
bacterial metabolite;
EC 3.2.1.18 (exo-alpha-sialidase) inhibitor;
human metabolite;
mouse metabolite |
glycosides
[no description available] | 3.14 | 5 | 0 | | |
sesquiterpenes
[no description available] | 2.08 | 1 | 0 | | |
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. | 2.1 | 1 | 0 | aminoxyls;
piperidines | catalyst;
ferroptosis inhibitor;
radical scavenger |
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. | 2.08 | 1 | 0 | alkali metal atom | |
indium
Indium: A metallic element, atomic number 49, atomic weight 114.818, symbol In. It is named from its blue line in the spectrum.. indium atom : A metallic element first identified and named from the brilliant indigo (Latin indicum) blue line in its flame spectrum. | 2.05 | 1 | 0 | boron group element atom | |
astatine
Astatine: Astatine. A radioactive halogen with the atomic symbol At, and atomic number 85. Its isotopes range in mass number from 200 to 219 and all have an extremely short half-life. Astatine may be of use in the treatment of hyperthyroidism because it emits ALPHA PARTICLES. | 2 | 1 | 0 | elemental astatine | |
seleninic acid
[no description available] | 2.11 | 1 | 0 | selenium oxoacid | |
avermectin b(1)a
avermectin B(1)a: RN given refers to avermectin B(1)a; see also avermectins & demethylavermectins | 2.02 | 1 | 0 | avermectin | |
oxepins
Oxepins: Compounds based on a 7-membered heterocyclic ring including an oxygen. They can be considered a medium ring ether. A natural source is the MONTANOA plant genus. Some dibenzo-dioxepins, called depsidones, are found in GARCINIA plants. | 2.02 | 1 | 0 | | |
beta-escin
[no description available] | 2.04 | 1 | 0 | | |
idopyranose
L-idose : The L-stereoisomer of idose.. L-idopyranose : The pyranose form of L-idose. | 2.02 | 1 | 0 | L-idose | |
dextrothyroxine
[no description available] | 2.02 | 1 | 0 | | |
cellulose
DEAE-Cellulose: Cellulose derivative used in chromatography, as ion-exchange material, and for various industrial applications. | 2.11 | 1 | 0 | glycoside | |
glycolipids
[no description available] | 2.04 | 1 | 0 | | |
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. | 2.13 | 1 | 0 | benzenes;
hydroxycoumarin;
methyl ketone | |
tris(4-bromophenyl)ammoniumyl hexachloroantimonate
tris(4-bromophenyl)ammoniumyl hexachloroantimonate: structure given in first source; used to activate thioglycosides towards glycosylation; do not confuse with BAHA cpd | 2.03 | 1 | 0 | | |