(organic chemistry) A lactam form of the amino acid glutamic acid

plural of pyroglutamic acid

(organic chemistry) The keto carboxylic acid, (CH₃)₂-CO-COOH, that is a metabolite of valine

(organic chemistry) Any of several oxalo- derivatives of crotonic acid, but especially 4-oxalocrotonic acid, COOH-CO-CH₂-CH=CH-COOH, which has a biochemical function.

(chemistry) Any carboxylic acid in which a halogen atom takes the place of a hydrogen atom in acetic acid; a common undesirable by-product of the chlorination of drinking water.

(organic chemistry) A compound of glucosamine and lactic acid that occurs as a component of peptidoglycan

(organic chemistry, pharmacology) A synthetic crystalline compound with anticonvulsant properties, used (generally as salts) in the treatment of epilepsy.

(biochemistry) Any of a family of steroid acids derived from sterols by oxidation with a cytochrome

(biochemistry) A nucleotide composed of thymine, ribose and phosphoric acid.

(organic chemistry) Any of several phenyl derivatives of butanoic acid, but especially 4-phenylbutanoic acid, many of whose derivatives have biochemical activity