Synonyms: 3,4-Dimethoxyphenyl-2-propenoic acid;2-Propenoic acid, 3-(3,4-dimethoxyphenyl)-;Cinnamic acid, 3,4-dimethoxy-;2-Propenoic acid, 3- (3,4-dimethoxyphenyl)-;3-(3,4-Dimethoxyphenyl)propenoic acid;Caffeic acid dimethyl ether;Cinnamic acid, 3,4-dimethoxy- (8CI);