(organic chemistry) a ketocarboxylic acid formally derived from pentanoic acid by replacing a methylene group with a carbonyl group

(organic chemistry) A particular triterpenoid carboxylic acid that is an immunomodulator

(organic chemistry) An ellagitannin that has some antioxidant action

(organic chemistry) An aromatic carboxylic acid that is analogous to vitamin E

(organic chemistry) Synonym of acrylic acid (IUPAC nomenclature)

plural of nonulosonic acid

(organic chemistry) Synonym of dicarboxylic acid

(organic chemistry) Any amino acid in which the amino group is attached to the carbon atom of a double bond (R¹-NH-C(R²)=CHCOOH)

(organic chemistry) Any dioic acid in which the carboxylate groups are separated by a double bond

(organic chemistry) Any of several isomeric carboxylic acids, derived from heptanoic acid, having a triple bond