(organic chemistry) Any hydroxy derivative of glutaric acid, but especially 2-hydroxyglutaric acid which has biological activity

(organic chemistry) Any of three isomeric carboxylic acids related to hydroxybenzoic acids by replacing the hydroxy group with a thiol

(organic chemistry) A polyunsaturated fatty acid, (5Z,9Z,12Z)-octadeca-5,9,12-trienoic acid, found mainly in pine nuts.

(organic chemistry) A carotenoid carboxylic acid derived from lycopene

(pharmacology) A molecule used as a contrast medium.

(pharmacology) The chlorinated phosphonic acid CCl₂(PO(OH)₂)₂.

(organic chemistry) Any of a family of phenolic carboxylic acids, found in coffee, that have antioxidant properties

(organic chemistry) A hydroxy acid found in the oil of most species of Lesquerella (= Physaria; the bladderpods).

(organic chemistry) Any amino derivative of levulinic acid, but especially 5-aminolevulinic acid which is an intermediate in the biosynthesis of porphyrin

(organic chemistry) A bile acid that is a taurine derivative of ursodeoxycholic acid