(3,4-Dimethoxyphenyl)acetic acid 3,4-(Dimethoxy)benzeneacetic acid 3,4-(Dimethoxyphenyl) acetic acid 93-40-3 Acetic acid, (3,4-dimethoxyphenyl)- Benzeneacetic acid, 3,4-dimethoxy- Homoveratric Acid NSC27897