Ethyl (E)-3-(3,4,5-trimethoxyphenyl)prop-2-enoate , its cas register number 1878-29-1. It also can be called 2-Propenoic acid, 3-(3,4,5-trimethoxyphenyl)-, ethyl ester, (2E)- ; and Ethyl (2E)-3-(3,4,5-trimethoxyphenyl)acrylate .