Resveratrol 98% 1, GMP and NSF-GMP certified 2,Pure natural resveratrol 98% 3,Healthcare ingredient 4,GMP Contract Manufa [Product ... [Specification]10%-98% trans-resveratrol[Characters]Off-white to white powder[Solubility]Easily soluble in ether,chlorofrom, methanol,ethanol,acetone etc ... , America NSF-GMP, ISO9001 and ISO14001 certified company (4)Pure natural product