(organic chemistry) The compound (3R,4R)-3-[(1-carboxyvinyl)oxy]-4-hydroxycyclohexa-1,5-diene-1-carboxylic acid, whose anion chorismate is an important biochemical intermediate in plants and microorganisms.

(inorganic chemistry) Any of several poorly-characterized acids that are hydrates of boric oxide

(organic chemistry) The compound mercaptoacetic acid formally derived from glycolic acid by replacing the hydroxyl group with a sulfhydryl group

(organic chemistry) Pyridine-2,3-dicarboxylic acid, which may be prepared by the oxidation of quinoline.

(biochemistry) One of the constituents, along with acetylglucosamine, of peptidoglycan

(biochemistry) A carboxylic acid, (2R,3S,4S,5R)-2,3,4,5,6-pentahydroxyhexanoic acid formed by oxidation of galactose

(obsolete) thiamine

(organic chemistry) Any diamino derivative of pimelic acid, but especially (2R,6S)-2,6-diaminoheptanedioic acid which has biochemical activity

(biochemistry) A non-antibiotic precursor of macrotetrolide antibiotics

(biochemistry) An intermediate in the biosynthesis of the amino acids phenylalanine and tyrosine