| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
ammonium hydroxide
azane : Saturated acyclic nitrogen hydrides having the general formula NnHn+2. | 2.08 | 1 | 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 |
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). | 2.21 | 1 | 0 | alkane;
gas molecular entity;
mononuclear parent hydride;
one-carbon compound | bacterial metabolite;
fossil fuel;
greenhouse gas |
chlorine
chloride : A halide anion formed when chlorine picks up an electron to form an an anion. | 3.23 | 6 | 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. | 1.92 | 1 | 0 | chlorine molecular entity;
gas molecular entity;
hydrogen halide;
mononuclear parent hydride | mouse metabolite |
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. | 2.08 | 1 | 0 | alkane | xenobiotic |
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. | 2.03 | 1 | 0 | alpha-CH2-containing aldehyde;
propanals | Escherichia coli metabolite |
formaldehyde
paraform: polymerized formaldehyde; RN given refers to parent cpd; used in root canal therapy | 2.03 | 1 | 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] | 7.03 | 1 | 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 |
carbonic acid
Carbonic Acid: Carbonic acid (H2C03). The hypothetical acid of carbon dioxide and water. It exists only in the form of its salts (carbonates), acid salts (hydrogen carbonates), amines (carbamic acid), and acid chlorides (carbonyl chloride). (From Grant & Hackh's Chemical Dictionary, 5th ed) | 2.11 | 1 | 0 | carbon oxoacid;
chalcocarbonic acid | mouse metabolite |
hydrogen cyanide
Hydrogen Cyanide: Hydrogen cyanide (HCN); A toxic liquid or colorless gas. It is found in the smoke of various tobacco products and released by combustion of nitrogen-containing organic materials.. hydrogen cyanide : A one-carbon compound consisting of a methine group triple bonded to a nitrogen atom | 4.33 | 6 | 0 | hydracid;
one-carbon compound | Escherichia coli metabolite;
human metabolite;
poison |
melatonin
[no description available] | 7.17 | 1 | 0 | acetamides;
tryptamines | anticonvulsant;
central nervous system depressant;
geroprotector;
hormone;
human metabolite;
immunological adjuvant;
mouse metabolite;
radical scavenger |
phosphoric acid
phosphoric acid: concise etchant is 37% H3PO4. phosphoric acid : A phosphorus oxoacid that consists of one oxo and three hydroxy groups joined covalently to a central phosphorus atom. | 2.11 | 1 | 0 | phosphoric acids | algal metabolite;
fertilizer;
human metabolite;
NMR chemical shift reference compound;
solvent |
thiosulfates
Thiosulfates: Inorganic salts of thiosulfuric acid possessing the general formula R2S2O3.. thiosulfate(2-) : A divalent inorganic anion obtained by removal of both protons from thiosulfuric acid. | 2.02 | 1 | 0 | divalent inorganic anion;
sulfur oxide;
sulfur oxoanion | human metabolite |
sulfites
Sulfites: Inorganic salts of sulfurous acid.. sulfites : Any sulfurous acid derivative that is a salt or an ester of sulfurous acid.. organosulfonate oxoanion : An organic anion obtained by deprotonation of the sufonate group(s) of any organosulfonic acid.. sulfite : A sulfur oxoanion that is the conjugate base of hydrogen sulfite (H2SO3). | 2.02 | 1 | 0 | divalent inorganic anion;
sulfur oxide;
sulfur oxoanion | |
sulfuric acid
sulfuric acid : A sulfur oxoacid that consists of two oxo and two hydroxy groups joined covalently to a central sulfur atom. | 6.93 | 1 | 0 | sulfur oxoacid | catalyst |
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. | 2.08 | 1 | 0 | sulfur oxide | Escherichia coli metabolite;
food bleaching agent;
refrigerant |
uric acid
Uric Acid: An oxidation product, via XANTHINE OXIDASE, of oxypurines such as XANTHINE and HYPOXANTHINE. It is the final oxidation product of purine catabolism in humans and primates, whereas in most other mammals URATE OXIDASE further oxidizes it to ALLANTOIN.. uric acid : An oxopurine that is the final oxidation product of purine metabolism.. 6-hydroxy-1H-purine-2,8(7H,9H)-dione : A tautomer of uric acid having oxo groups at C-2 and C-8 and a hydroxy group at C-6.. 7,9-dihydro-1H-purine-2,6,8(3H)-trione : An oxopurine in which the purine ring is substituted by oxo groups at positions 2, 6, and 8. | 2.5 | 2 | 0 | uric acid | Escherichia coli metabolite;
human metabolite;
mouse metabolite |
mechlorethamine
nitrogen mustard : Compounds having two beta-haloalkyl groups bound to a nitrogen atom, as in (X-CH2-CH2)2NR. | 3.09 | 1 | 0 | nitrogen mustard;
organochlorine compound | alkylating agent |
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. | 6.83 | 50 | 0 | pseudohalide anion | EC 1.9.3.1 (cytochrome c oxidase) inhibitor |
methylamine
methyl group : An alkyl group that is the univalent group derived from methane by removal of a hydrogen atom. | 2.03 | 1 | 0 | methylamines;
one-carbon compound;
primary aliphatic amine | mouse metabolite |
phosgene
Phosgene: A highly toxic gas that has been used as a chemical warfare agent. It is an insidious poison as it is not irritating immediately, even when fatal concentrations are inhaled. (From The Merck Index, 11th ed, p7304). phosgene : An acyl chloride obtained by substitution of both hydrogens of formaldehyde by chlorine.. chloroketone : A ketone containing a chloro substituent. | 3.86 | 3 | 0 | acyl chloride | |
chloropicrin
chloropicrin: major descriptor (66-85); on-line search HYDROCARBONS, CHLORINATED (66-85); Index Medicus search CHLOROPICRIN (66-85). chloropicrin : A C-nitro compound that is nitromethane in which all three hydrogens are replaced by chlorines. It is a severe irritant, and can cause immediate, severe inflammation of the eyes, nose and throat, and significant injuries to the upper and lower respiratory tract. Formerly stockpiled as a chemical warfare agent, it has been widely used in the US as a soil fumigant, particularly for strawberry crops. It is not approved for use within the European Union. | 2.45 | 2 | 0 | C-nitro compound;
one-carbon compound;
organochlorine compound | antifungal agrochemical;
fumigant insecticide;
nematicide |
propionitrile
propionitrile: structure. propionitrile : A nitrile that is acrylonitrile in which the carbon-carbon double bond has been reduced to a single bond. | 2.03 | 1 | 0 | aliphatic nitrile;
volatile organic compound | polar aprotic solvent |
cyanogen
cyanogen: structure. oxalonitrile : A dinitrile that is ethane substituted by two cyano groups. | 2.63 | 3 | 0 | dinitrile;
pseudohalogen | |
mustard gas
Mustard Gas: Severe irritant and vesicant of skin, eyes, and lungs. It may cause blindness and lethal lung edema and was formerly used as a war gas. The substance has been proposed as a cytostatic and for treatment of psoriasis. It has been listed as a known carcinogen in the Fourth Annual Report on Carcinogens (NTP-85-002, 1985) (Merck, 11th ed).. bis(2-chloroethyl) sulfide : An ethyl sulfide that is diethyl sulfide in which a hydrogen from each of the terminal methyl groups is replaced by a chlorine. It is a powerful vesicant regulated under the Chemical Weapons Convention. | 3.09 | 1 | 0 | ethyl sulfide;
organochlorine compound | alkylating agent;
carcinogenic agent;
vesicant |
cyanogen bromide
Cyanogen Bromide: Cyanogen bromide (CNBr). A compound used in molecular biology to digest some proteins and as a coupling reagent for phosphoroamidate or pyrophosphate internucleotide bonds in DNA duplexes. | 2.94 | 4 | 0 | | |
dichloroacetonitrile
dichloroacetonitrile: by-product of water chlorination; structure given in first source | 2.97 | 4 | 0 | aliphatic nitrile | |
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. | 7.8 | 3 | 0 | chlorine oxoacid;
reactive oxygen species | EC 2.5.1.18 (glutathione transferase) inhibitor;
EC 3.1.1.7 (acetylcholinesterase) inhibitor;
human metabolite |
bromic acid
[no description available] | 2.11 | 1 | 0 | bromine oxoacid | |
chromates
Chromates: Salts of chromic acid containing the CrO(2-)4 radical.. chromate(2-) : A chromium oxoanion resulting from the removal of two protons from chromic acid. | 1.95 | 1 | 0 | chromium oxoanion;
divalent inorganic anion | oxidising agent |
chlorine
Chlorine: An element with atomic symbol Cl, atomic number 17, and atomic weight 35, and member of the halogen family. | 4.04 | 14 | 0 | diatomic chlorine;
gas molecular entity | bleaching agent |
chloramine
[no description available] | 3.25 | 6 | 0 | halide | |
fluorides
[no description available] | 2.15 | 1 | 0 | halide anion;
monoatomic fluorine | |
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. | 2.03 | 1 | 0 | benzenes;
phenyl acetates | |
nitrogen chloride
nitrogen chloride: strong irritant & lacrimator | 2.76 | 3 | 0 | nitrogen halide | |
fullerene c60
Fullerenes: A polyhedral CARBON structure composed of around 60-80 carbon atoms in pentagon and hexagon configuration. They are named after Buckminster Fuller because of structural resemblance to geodesic domes. Fullerenes can be made in high temperature such as arc discharge in an inert atmosphere.. fullerene : A compound composed solely of an even number of carbon atoms, which form a cage-like fused-ring polycyclic system with twelve five-membered rings and the rest six-membered rings. The term has been broadened to include any closed cage structure consisting entirely of three-coordinate carbon atoms. | 2.15 | 1 | 0 | fullerene | geroprotector |
metabisulfite
metabisulfite: see also related Na metabisulfite & K metabisulfite | 2.02 | 1 | 0 | sulfur oxide;
sulfur oxoanion | |
chloramine-t
chloramine-T: RN given refers to unlabeled parent cpd. chloramine T : An organic sodium salt derivative of toluene-4-sulfonamide with a chloro substituent in place of an amino hydrogen. | 2.05 | 1 | 0 | organic sodium salt | allergen;
antifouling biocide;
disinfectant |
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) | 3.55 | 2 | 0 | metalloid atom;
pnictogen | micronutrient |
lewisite
lewisite: RN given refers to cpd without isomeric designation | 3.09 | 1 | 0 | | |
corrin
corrin : A tetrapyrrole fundamental parent that is the core macrocycle of vitamin B12. | 7.07 | 1 | 0 | | |
vitamin b 12
Vitamin B 12: A cobalt-containing coordination compound produced by intestinal micro-organisms and found also in soil and water. Higher plants do not concentrate vitamin B 12 from the soil and so are a poor source of the substance as compared with animal tissues. INTRINSIC FACTOR is important for the assimilation of vitamin B 12. | 2.52 | 2 | 0 | | |
vermiculite
[no description available] | 2.6 | 1 | 0 | | |