has role homovanillate guaiacols monocarboxylic acid (3,4-dihydroxyphenyl)acetic acid homovanillic acid 4-Hydroxy-3-methoxybenzeneacetic acid CHEBI:545959 KEGG:C05582 Vanillacetic acid 2-(4-hydroxy-3-methoxyphenyl)acetic acid MetaCyc:CPD-7651 Wikipedia:Homovanillic_acid CHEBI:5758 3-Methoxy-4-hydroxyphenylacetic acid HMDB:HMDB0000118 KNApSAcK:C00029504 A monocarboxylic acid that is the 3-O-methyl ether of (3,4-dihydroxyphenyl)acetic acid. It is a catecholamine metabolite. Homovanillic acid (4-hydroxy-3-methoxyphenyl)acetic acid HVA 3-Methoxy-4-hydroxyphenylacetate mouse metabolite human metabolite