Resveratrol’s formal chemical name is (E)-5-(4-hydroxystyryl)benzene-1,3-diol. Its other names are Trans-3,5,4′-trihydroxystilbene; 3,4′,5-stilbenetriol; trans-resveratrol and (E)-5-(p-hydroxystyryl)resorcinol. Resveratrol exists mainly in the form of four: CIS Resveratrol, trans-resveratrol, CIS resveratrol glucoside and trans-resveratrol glucoside. The later form in the intestinal tract in action you can release a Resveratrol, TRANS-isomers of physiological activity than CIS-isomer, nature has mainly TRANS exists. General resveratrol contain 5%-10% of the CIS Resveratrol, trans-resveratrol is bio-active and has clear free radicals ability than CIS resveratrol. [ CAS] 501-36-0 [ Molecular formula] C14H12O3 [ Plant origin] Grape skin; Polygonum cuspidatum; [ Efficacy function] anti-aging, prevent cancer, prevent the oxidation of low density lipoprotein, the impact of lipid and arachidonic acid metabolism, anti-thrombotic, anti-platelet aggregation, anti-inflammatory, anti-allergic effects [ Active ingredients] Trans -resveratrol [Character] Yellow brown to off white powder [ Test method] HPLC [Specification] Resveratrol 50% Resveratrol 98% Resveratrol 99%