(3,4-Dihydroxyphenyl)acetic acid 102-32-9 3,4-Dihydroxybenzeneacetic acid 3,4-Dihydroxyphenylacetic acid Acetic acid, (3,4-dihydroxyphenyl)- Ba 2773 Benzeneacetic acid, 3,4-dihydroxy- DOPAC Dihydroxyphenylacetic acid Dopacetic acid Homoprotocatechuic acid NSC73191