Giant Knotweed Extract Resveratrol Product Specification:20%, 50%, 98%, 99% Resveratrol Latin Name:Polygonum Cuspidatum Appearance:Brown to White Powder Plant Part Used:Root & Rhizome Extract ... Solution:Ethanol CAS#:501-36-0 What is Resveratrol ? Resveratrol belongs to a ... fine quality of the product, Nutramax’s resveratrol have good antioxidant capacity, with effectiveness of ...