... .CGMP, Halal, Kosher, CMP, ISO9001 Main specification: 20%, 50%, 98%,99% resveratrol Appearance: Brown to white Powder Plant resource: Polygonum Cuspidatum ... Plant part used : root& rhizome Extract solution: ethanol CAS: 501-36-0 Solubility: Good in water Introduction: Resveratrol is a naturally ...