Latin Name: Polygonum Cuspidatum Cas: 501-36-0 Appearance：Offwhite yellowish Powder Test Method：HPLC Part of the Plant Used: Root & Rhizome of Polygonum cuspidatum Sieb. et Zucc. Extract Method: Alcohol Applicable field：Medicine Assay： 10%－99% Active material: Resveratrol Molecular Formula : C14H12O3 Molecular Weight: 228.24 Melting point: 253℃-255℃ Solubility: soluble in diethyl ether, Chloroform, Etheyl alcohol, Acetone Packing: Double-deck plastic bag, pack with aluminium foil paper outside Particle size: 100 mesh Shelf Life : 2 years under well Storage situation and stored away from direct sun light.