Synonyms: Hydrocinnamicacid, 3,4,5-trimethoxy- (6CI,7CI,8CI); 3,4,5-Trimethoxy-b-phenylpropionic acid;3,4,5-Trimethoxybenzenepropanoic acid; 3,4,5-Trimethoxyhydrocinnamic acid;3,4,5-Trimethoxyphenylpropionic acid; 3-(3,4,5-Trimethoxyphenyl)propanoic acid;3-(3,4,5-Trimethoxyphenyl)propionic acid; NSC 169988