Pyrazine
Pyrazine is a diazine that is benzene in which the carbon atoms at positions 1 and 4 have been replaced by nitrogen atoms. It has a role as a Daphnia magna metabolite. It is a memb…
Organic Compounds
Carbon-containing compounds found in nature and synthesized in labs
308 chemicals in this category
Pyrazole
1H-pyrazole is the 1H-tautomer of pyrazole. It is a conjugate base of a pyrazolium. It is a conjugate acid of a pyrazol-1-ide. It is a tautomer of a 3H-pyrazole and a 4H-pyrazole.
Pyrene
Pyrene is an ortho- and peri-fused polycyclic arene consisting of four fused benzene rings, resulting in a flat aromatic system. It has a role as a fluorescent probe and a persiste…
Pyridoxine
Pyridoxine is a hydroxymethylpyridine with hydroxymethyl groups at positions 4 and 5, a hydroxy group at position 3 and a methyl group at position 2. The 4-methanol form of vitamin…
Pyrimidine
Pyrimidine is the parent compound of the pyrimidines; a diazine having the two nitrogens at the 1- and 3-positions. It has a role as a Daphnia magna metabolite. It is a diazine and…
Pyrrole
1H-pyrrole is a tautomer of pyrrole that has the double bonds at positions 2 and 4. It is a secondary amine and a pyrrole. It is a tautomer of a 3H-pyrrole and a 2H-pyrrole.
Pyrrolidine
Pyrrolidine is a cyclic amine whose five-membered ring contains four carbon atoms and one nitrogen atom; the parent compound of the pyrrolidine family. It is a saturated organic he…
Quercetin
Quercetin is a pentahydroxyflavone having the five hydroxy groups placed at the 3-, 3'-, 4'-, 5- and 7-positions. It is one of the most abundant flavonoids in edible vegetables, fr…
Quinine
Quinine is a cinchona alkaloid that is cinchonidine in which the hydrogen at the 6-position of the quinoline ring is substituted by methoxy. It has a role as a non-narcotic analges…
Quinoline
Quinoline and its strong acid salts can cause cancer according to an independent committee of scientific and health experts.
Resorcinol
Resorcinol is a benzenediol that is benzene dihydroxylated at positions 1 and 3. It has a role as a sensitiser and an erythropoietin inhibitor. It is a phenolic donor, a benzenedio…
Resveratrol
Resveratrol is a stilbenol that is stilbene in which the phenyl groups are substituted at positions 3, 5, and 4' by hydroxy groups. It has a role as a glioma-associated oncogene in…
Retinol
All-trans-retinol is a retinol in which all four exocyclic double bonds have E- (trans-) geometry. It has a role as a mouse metabolite, a plant metabolite and a human metabolite. I…
Riboflavin
Riboflavin is D-Ribitol in which the hydroxy group at position 5 is substituted by a 7,8-dimethyl-2,4-dioxo-3,4-dihydrobenzo[g]pteridin-10(2H)-yl moiety. It is a nutritional factor…
Serotonin
Serotonin is a primary amino compound that is the 5-hydroxy derivative of tryptamine. It has a role as a neurotransmitter, a mouse metabolite and a human metabolite. It is a monoam…
Sildenafil
Sildenafil is a pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfo…
Skatole
Skatole is a methylindole carrying a methyl substituent at position 3. It is produced during the anoxic metabolism of L-tryptophan in the mammalian digestive tract. It has a role a…
Sorbitol
D-glucitol is the D-enantiomer of glucitol (also known as D-sorbitol). It has a role as a metabolite, a laxative, a sweetening agent, a cathartic, a mouse metabolite, a Saccharomyc…
Squalene
Squalene is a triterpene consisting of 2,6,10,15,19,23-hexamethyltetracosane having six double bonds at the 2-, 6-, 10-, 14-, 18- and 22-positions with (all-E)-configuration. It ha…
Streptomycin
Streptomycin is a amino cyclitol glycoside that consists of streptidine having a disaccharyl moiety attached at the 4-position. The parent of the streptomycin class. It has a role …