3,4,5-trimethoxycinnamic acid Chemical Name: 3,4,5-trimethoxycinnamic acid Molecular Formula: C12H14O5 Formula Weight: 238.24 CAS No.: 90-50-6 Appearance:white or canary crystal powder,it can be solved in ethanol, ethyl acetate and other organic solvent. Assay :99% Usage£ºIt can be used for organic synthesize intermediate