Product name: Polygonum Cuspidatum Sieb.et Zucc. Resveratrol Extract Powder 
Plant origin: root & Rhizome of Polygonum cuspidatum
Plant of origin: Shaanxi,China(Mainland)
Effective constituent: polydatin
Testing method: HPLC
Appearance: white fine powder

Molecular Formula:C14H12O3

Molecular Weight:228.25

Cas No.:501-36-0
Function and uses: 

1.Polydatin can used to anticancer;
2.Polydatin has effect on cardiovascular system;
3.Polydatin own the nourishing and protecting liver;
4.Polydatin has the useage of antibacterial and antifungal;
5.Polydatin has impact on the metabolism of osseous issue;
6.Polydatin own the effective of ntioxidant and quench free-radicals.
Scope of application: 

Studies suggest that the giant knotweed extract polydatin has anti-atherosclerotic activity and that it might have some immune-stimulating and anti-cancer effects. Human studies are few in number and inconclusive due to short duration and poor design.

Above information has not been approved by State Food and Drug Administration yet. From published document and for reference only