Brand: nanjian Pharmaceutical intermediate 3,4-dimethoxycinnamic acid CAS No.: 6443-72-7 CAS No.: 6443-72-7 Assay: 99%min Appearance: white or light yellow crystal Molecular Formula: C11H12O4 Molecular weight: 208 Package: 25Kg/drum or according to your packing demand Usage: organic chemical intermediates