3,4,5-trimethoxycinnamic acid Pharmaceutical intermediate CAS#:90-50-6 CAS#:90-50-6 Assay: 98% min Appearance: white or light yellow crystal Molecular formula: C12H14O5 Molecular weight: 238 Mp: 124-128degree C Package: 5Kg/drum or according to your packing demand Usage: organic chemical intermediates for Cinepazide or Gliclazide