| Substance | Relationship Strength | Studies | Trials | Classes | Roles |
|---|
formaldehyde
paraform: polymerized formaldehyde; RN given refers to parent cpd; used in root canal therapy | 1.97 | 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 |
nitrates
Nitrates: Inorganic or organic salts and esters of nitric acid. These compounds contain the NO3- radical. | 1.97 | 1 | 0 | monovalent inorganic anion;
nitrogen oxoanion;
reactive nitrogen species | |
nitrites
Nitrites: Salts of nitrous acid or compounds containing the group NO2-. The inorganic nitrites of the type MNO2 (where M=metal) are all insoluble, except the alkali nitrites. The organic nitrites may be isomeric, but not identical with the corresponding nitro compounds. (Grant & Hackh's Chemical Dictionary, 5th ed) | 1.97 | 1 | 0 | monovalent inorganic anion;
nitrogen oxoanion;
reactive nitrogen species | human metabolite |
pyrazole
1H-pyrazole : The 1H-tautomer of pyrazole. | 2.38 | 2 | 0 | pyrazole | |
methapyrilene
Methapyrilene: Histamine H1 antagonist with sedative action used as a hypnotic and in allergies.. methapyrilene : A member of the class of ethylenediamine derivatives that is ethylenediamine in which one of the nitrogens is substituted by two methyl groups, and the other nitrogen is substituted by a 2-pyridyl group and a (2-thienyl)methyl group. | 1.96 | 1 | 0 | ethylenediamine derivative | anti-allergic agent;
carcinogenic agent;
H1-receptor antagonist;
sedative |
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. | 3.36 | 7 | 0 | barbiturates | anticonvulsant;
drug allergen;
excitatory amino acid antagonist;
sedative |
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. | 2.66 | 3 | 0 | nitrosamine | carcinogenic agent;
hepatotoxic agent;
mutagen |
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. | 2.37 | 2 | 0 | nitrosamine | carcinogenic agent;
mutagen |
aniline
[no description available] | 2.39 | 2 | 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. | 3.99 | 14 | 0 | nitrosamine | geroprotector;
mutagen |
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. | 1.98 | 1 | 0 | chloromethanes;
one-carbon compound | carcinogenic agent;
central nervous system drug;
inhalation anaesthetic;
non-polar solvent;
refrigerant |
n-nitrosodiphenylamine
N-nitrosodiphenylamine: RN given refers to parent cpd; structure in first source | 2.9 | 4 | 0 | phenylhydrazines | |
methylaniline
methylaniline: RN given refers to parent cpd. methylaniline : A substituted aniline carrying one or more methyl groups at unspecified positions. | 2.37 | 2 | 0 | methylaniline;
phenylalkylamine;
secondary amine | |
n-nitrosopiperidine
N-nitrosopiperidine: structure. N-nitrosopiperidine : A nitrosamine that is piperidine in which the hydrogen attached to the nitrogen is replaced by a nitroso group. One of the many carcinogens detected in cigarette smoke, it is found in meat, cheese and spices that have been treated with the preservative sodium nitrite. | 1.96 | 1 | 0 | nitrosamine;
piperidine | apoptosis inducer;
carcinogenic agent;
environmental contaminant;
mutagen |
morpholine
[no description available] | 1.97 | 1 | 0 | morpholines;
saturated organic heteromonocyclic parent | NMR chemical shift reference compound |
n,n'-dinitrosopiperazine
N,N'-dinitrosopiperazine: RN given refers to unlabeled cpd | 1.96 | 1 | 0 | | |
thiazoles
[no description available] | 1.97 | 1 | 0 | 1,3-thiazoles;
mancude organic heteromonocyclic parent;
monocyclic heteroarene | |
n-pentyl nitrite
Amyl Nitrite: A vasodilator that is administered by inhalation. It is also used recreationally due to its supposed ability to induce euphoria and act as an aphrodisiac.. n-pentyl nitrite : A nitrite ester having n-pentyl as the alkyl group. | 2.37 | 2 | 0 | nitrite esters | vasodilator agent |
alpha-aminopyridine
alpha-aminopyridine: RN given refers to parent cpd; structure in Merck Index, 9th ed, #485. aminopyridine : Compounds containing a pyridine skeleton substituted by one or more amine groups. | 1.96 | 1 | 0 | | |
thiazolidines
Thiazolidines: Reduced (protonated) form of THIAZOLES. They can be oxidized to THIAZOLIDINEDIONES. | 1.97 | 1 | 0 | thiazolidine | |
diisopropylnitrosamine
[no description available] | 1.96 | 1 | 0 | | |
n-nitroso(di-n-propyl)amine
[no description available] | 1.96 | 1 | 0 | nitroso compound | |
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. | 1.96 | 1 | 0 | N-nitrosoureas | alkylating agent;
carcinogenic agent;
mutagen;
teratogenic agent |
dibutylnitrosamine
dibutylnitrosamine: structure | 1.96 | 1 | 0 | nitroso compound | |
n-nitrosopyrrolidine
N-Nitrosopyrrolidine: Carcinogenic nitrosamine that may be formed from preservatives in meats during their preparation or in the liver during metabolism. | 2.37 | 2 | 0 | pyrrolidines | |
n-nitrosoperhydroazepine
[no description available] | 1.96 | 1 | 0 | | |
nitrosobenzylmethylamine
nitrosobenzylmethylamine: structure | 2.37 | 2 | 0 | | |
n-nitrosodiethanolamine
[no description available] | 2.36 | 2 | 0 | nitroso compound | |
n-nitroso-2,6-dimethylmorpholine
N-nitroso-2,6-dimethylmorpholine: RN given refers to parent cpd without isomeric designation | 1.96 | 1 | 0 | | |
butylhydroxybutylnitrosamine
Butylhydroxybutylnitrosamine: A substituted carcinogenic nitrosamine.. N-butyl-N-(4-hydroxybutyl)nitrosamine : A nitrosamine that has butyl and 4-hydroxybutyl substituents. In mice, it causes high-grade, invasive cancers in the urinary bladder, but not in any other tissues. | 1.96 | 1 | 0 | nitrosamine;
primary alcohol | carcinogenic agent |
n-nitroso-n-methylvinylamine
N-nitroso-N-methylvinylamine: structure given in first source | 1.96 | 1 | 0 | nitroso compound | |
n-nitrosodibenzylamine
N-nitrosodibenzylamine: structure | 1.96 | 1 | 0 | | |
n-nitroso-n-methylcyclohexylamine
[no description available] | 1.96 | 1 | 0 | | |
1-nitrosopiperazine
[no description available] | 1.96 | 1 | 0 | phytanoyl-CoAs | |
nitrosomethyl-n-butylamine
nitrosomethyl-N-butylamine: RN given refers to parent cpd | 1.96 | 1 | 0 | | |
meladrazine
nitrosoproline: RN given refers to 1-nitroso-L-proline | 1.96 | 1 | 0 | | |
s-methylcysteine
S-methylcysteine: RN given refers to parent cpd without isomeric designation. S-methylcysteine : A cysteine derivative that is L-cysteine in which the hydrogen attached to the sulfur is replaced by a methyl group. | 1.96 | 1 | 0 | S-alkyl-L-cysteine zwitterion;
S-alkyl-L-cysteine | human urinary metabolite;
plant metabolite |
deuterium
Deuterium: The stable isotope of hydrogen. It has one neutron and one proton in the nucleus. | 1.95 | 1 | 0 | dihydrogen | |
methylethylnitrosamine
[no description available] | 2.37 | 2 | 0 | nitroso compound | |
n-ethyl-n-hydroxyethylnitrosamine
N-ethyl-N-(2-hydroxyethyl)nitrosamine : A nitrosamine that is N-nitrosodiethylamine in which one of the ethyl froups has been replaced by a 2-hydroxyethyl group. It is used to induce renal and liver tumours in rodents. | 1.96 | 1 | 0 | nitrosamine;
primary alcohol | carcinogenic agent |
n-amyl-n-methylnitrosamine
N-methyl-N-pentylnitrosamine : A nitrosamine that has methyl and pentyl substituents. It is a potent oesophageal carcinogen. | 1.96 | 1 | 0 | nitrosamine | carcinogenic agent |
vinylethylnitrosamine
[no description available] | 1.96 | 1 | 0 | | |
n-nitrososarcosine
N-nitrososarcosine : A nitrosamine that is sarcosine in which the hydrogen attached to the nitrogen has been replaced by a nitroso group. | 1.96 | 1 | 0 | nitrosamine;
non-proteinogenic amino acid derivative | carcinogenic agent |
trinitrosotrimethylenetriamine
[no description available] | 1.96 | 1 | 0 | 1,3,5-triazinanes;
nitrosamine | |
diallylnitrosamine
[no description available] | 1.96 | 1 | 0 | | |
n-nitroso-n'-methylpiperazine
[no description available] | 1.96 | 1 | 0 | | |
n'-nitrosonornicotine
N'-nitrosonornicotine: structure; a potent carcinogen in laboratory animals | 1.96 | 1 | 0 | pyridines;
pyrrolidines | |
n-nitrosoephedrine
[no description available] | 1.96 | 1 | 0 | | |
n-nitrosoheptamethyleneimine
[no description available] | 1.96 | 1 | 0 | nitrosamine | |
diisopropanolnitrosamine
diisopropanolnitrosamine: experimental carcinogen. N,N-bis(2-hydroxypropyl)nitrosamine : A nitrosamine that is dipropylamine in which the hydrogen attached to the nitrogen has been replaced by a nitroso group. It is a genotoxic carcinogen, targeting the lung, liver, thyroid, and kidney. | 1.96 | 1 | 0 | diol;
nitrosamine;
secondary alcohol | carcinogenic agent |
n-nitrosomethyldodecylamine
N-nitrosomethyldodecylamine: product of reaction of dimethyl-n-dodecylamine with nitrous acid | 1.96 | 1 | 0 | | |
n,n-dinitrosohomopiperazine
[no description available] | 1.96 | 1 | 0 | | |
methyl(acetoxymethyl)nitrosamine
methyl(acetoxymethyl)nitrosamine: RN given refers to parent cpd; structure in seventh source | 1.96 | 1 | 0 | | |
nitrosobis(2-oxopropyl)amine
nitrosobis(2-oxopropyl)amine: structure. nitrosobis(2-oxopropyl)amine : A nitrosamine that is iminodiacetone that is substituted by a nitroso group at the N-atom. It induces pancreatic ductal adenocarcinomas in Syrian golden hamsters (other rodents are not susceptible). | 1.96 | 1 | 0 | ketone;
nitrosamine | carcinogenic agent |
4-(n-methyl-n-nitrosamino)-1-(3-pyridyl)-1-butanone
4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanone: structure; from tobacco smoke | 2 | 1 | 0 | nitrosamine;
pyridines | |
n-nitrosothiazolidine
N-nitrosothiazolidine: structure given in first source | 1.97 | 1 | 0 | nitrosamine;
thiazolidines | |
n-nitrosoguvacoline
N-nitrosoguvacoline: formed by nitrosation of arecoline | 1.96 | 1 | 0 | citraconoyl group | |
o-(6)-methylguanine
O-(6)-methylguanine: structure. 6-O-methylguanine : A methylguanine in which the methyl group is positioned on the oxygen at position 6. Formed in DNA by alkylation of the oxygen atom of guanine, most often by N-nitroso compounds and sometimes due to methylation by other compounds such as endogenous S-adenosylmethionine, it base-pairs to thymine rather than cytidine, causing a G:C to A:T transition in DNA.. methylguanine : A 2-aminopurine that is guanine bearing a single methyl substituent. | 1.96 | 1 | 0 | methylguanine | mutagen |
n-nitrososarcosine ethyl ester
[no description available] | 1.96 | 1 | 0 | | |
2-hydroxypropyl-n-propylnitrosamine
[no description available] | 1.96 | 1 | 0 | | |
2-oxopropyl-n-propylnitrosamine
[no description available] | 1.96 | 1 | 0 | | |
n-nitrosothiazolidine-4-carboxylic acid
N-nitrosothiazolidine-4-carboxylic acid: found in human urine | 1.97 | 1 | 0 | organonitrogen compound;
organooxygen compound | |
3-nitrosomethylaminopyridine
3-nitrosomethylaminopyridine: structure | 1.96 | 1 | 0 | | |
2-nitrosomethylaminopyridine
2-nitrosomethylaminopyridine: structure | 1.96 | 1 | 0 | | |
4-nitrosomethylaminopyridine
4-nitrosomethylaminopyridine: structure | 1.96 | 1 | 0 | | |
singlet oxygen
Singlet Oxygen: An excited state of molecular oxygen generated photochemically or chemically. Singlet oxygen reacts with a variety of biological molecules such as NUCLEIC ACIDS; PROTEINS; and LIPIDS; causing oxidative damages. | 2.11 | 1 | 0 | chalcogen;
monoatomic oxygen;
nonmetal atom | macronutrient |
aflatoxin b1
Aflatoxin B1: A potent hepatotoxic and hepatocarcinogenic mycotoxin produced by the Aspergillus flavus group of fungi. It is also mutagenic, teratogenic, and causes immunosuppression in animals. It is found as a contaminant in peanuts, cottonseed meal, corn, and other grains. The mycotoxin requires epoxidation to aflatoxin B1 2,3-oxide for activation. Microsomal monooxygenases biotransform the toxin to the less toxic metabolites aflatoxin M1 and Q1.. aflatoxin B1 : An aflatoxin having a tetrahydrocyclopenta[c]furo[3',2':4,5]furo[2,3-h]chromene skeleton with oxygen functionality at positions 1, 4 and 11. | 1.96 | 1 | 0 | aflatoxin;
aromatic ether;
aromatic ketone | carcinogenic agent;
human metabolite |
n,n-diamylnitrosamine
[no description available] | 1.96 | 1 | 0 | | |
1,2-dilauroylphosphatidylcholine
1,2-dilauroylphosphatidylcholine: RN given refers to cpd without isomeric designation. 1,2-dilauroyl-sn-glycero-3-phosphocholine(1+) : A A 1,2-diacyl-sn-glycero-3-phosphocholine(1+) that is the dilauroyl diester of phosphatidiylcholine. | 1.99 | 1 | 0 | 1,2-diacyl-sn-glycero-3-phosphocholine(1+) | |
chlorogenic acid
caffeoylquinic acid: Antiviral Agent; structure in first source. chlorogenate : A monocarboxylic acid anion that is the conjugate base of chlorogenic acid; major species at pH 7.3. | 6.95 | 1 | 0 | cinnamate ester;
tannin | food component;
plant metabolite |
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. | 2.37 | 2 | 0 | nitrogen oxide | |
cysteine
Cysteine: A thiol-containing non-essential amino acid that is oxidized to form CYSTINE.. L-cysteinium : The L-enantiomer of cysteinium.. cysteine : A sulfur-containing amino acid that is propanoic acid with an amino group at position 2 and a sulfanyl group at position 3. | 1.96 | 1 | 0 | cysteinium | fundamental metabolite |
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). | 1.98 | 1 | 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 |
nad
NAD(1-) : An anionic form of nicotinamide adenine dinucleotide arising from deprotonation of the two OH groups of the diphosphate moiety. | 1.98 | 1 | 0 | organophosphate oxoanion | cofactor;
human metabolite;
hydrogen acceptor;
Saccharomyces cerevisiae metabolite |
phosphatidylcholines
Phosphatidylcholines: Derivatives of PHOSPHATIDIC ACIDS in which the phosphoric acid is bound in ester linkage to a CHOLINE moiety. | 1.99 | 1 | 0 | 1,2-diacyl-sn-glycero-3-phosphocholine | |
guanine
[no description available] | 1.96 | 1 | 0 | 2-aminopurines;
oxopurine;
purine nucleobase | algal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite |
7-methylguanine
7-methylguanine: RN given refers to unlabeled cpd; structure. 7-methylguanine : A methylguanine that is guanine substituted by a methyl group at position 7. It is a metabolite obtained during the methylation of DNA.. 2-imino-7-methyl-1,2,3,7-tetrahydro-6H-purin-6-one : A 7-methylguanine that is 1,2,3,7-tetrahydro-6H-purin-6-one substituted by an imino group at position 2 and a methyl group at position 7.. 2-amino-7-methyl-7H-purin-6-ol : A 7-methylguanine that is 7H-purine substituted by an amino group at position 2, a methyl group at position 7 and a hydroxy group at position 6.. 2-amino-7-methyl-1,7-dihydro-6H-purin-6-one : A 7-methylguanine that is 1,7-dihydro-6H-purin-6-one substituted by an amino group at position 2 and a methyl group at position 7. | 1.96 | 1 | 0 | 7-methylguanine | |
phosphorus radioisotopes
Phosphorus Radioisotopes: Unstable isotopes of phosphorus that decay or disintegrate emitting radiation. P atoms with atomic weights 28-34 except 31 are radioactive phosphorus isotopes. | 2 | 1 | 0 | | |