Grape skin p.E., 5% resveratrol Cas#: 501-36-0 Main contents: resveratrol Plant resource:vitis vinifera Main specification:resveratrol hplc 5% Appearance:dark purple powder Plant part used:peel Extract solution: grain alcohol Molecular formula and weight: c14h12o3, 228.25 Melting point: 230; Where will grape skin extract be used for? effect on cardiovascular system anti-cancer nourish and protect liver impact on the metabolism of osseous issue anti-oxidant and quench free-radicals anti-bacterial and anti-fungal. Packed in paper-drums and two plastic-bags inside according to customer requirements.