Botanical source: Polygonum cuspidatum Sieb CAS NO.: 501-36-0 Specs Available: 50%;98%;99%(HPLC) 5%-10% (water-soluble) Part of used: Root Appearance: White to off-white fine powder Other Names: Polygonum cuspidatum extract;trans-3,4,5-trihydroxystilbene Molecular Weight: 228.24 Molecular Formula: C14H12O3 Our Advantages: Scalable production capacity, strict quality control, cost efficiency from integrated factories, over 20 years of experience, advanced technology, and 24/7 after-sales support. Certificaions: FSSC2000/ISO2000/HALAL/KOSHER/HACCP Delivery terms: FedEx, DHL, EMS, UPS, TNT, all kinds of the airline, international shipping companies. Payment: TT/DP/PAY PAL/VISA/DA/LC/MASTER CARD/ESCROW