(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

(organic chemistry, countable) Any of four isomeric derivatives C₇H₇NO₃ of salicylic acid that have a single amino group.

(organic chemistry) The simplest aromatic sulfonic acid, a colourless deliquescent sheet crystal or white wax solid that is soluble in water and ethanol.

undecylenic acid

A toxin that accumulates in bivalves and causes diarrhetic shellfish poisoning.