... Resveratrol/Trans-Resveratrol Specification: 98% ,50% Test Method: HPLC Active Ingredient: Resveratrol/Trans-ResveratrolSpecification: 98% ,50%Test Method: HPLCGiant Knotweed Extract ResveratrolResveratrolProduct No.: OHI ... anthraquinones and their glycosides, napthoquinone, 3,5,4¡Â-trihydroxy stilbene (i.e., resveratrol), piceid, fallacinol, citreorosein, questin, questinol, protocatechuic acid, ...