(E)-3-(4-Hydroxy-3,5-dimethoxyphenyl)-2-propenal 2-Propenal, 3-(4-hydroxy-3,5-dimethoxyphenyl)-, (E)- 3,5-Dimethoxy-4-hydroxycinnamaldehyde (E) 4206-58-0 Sinapaldehyde Sinapyl aldehyde