Cas: C47H74O17. It is extracted from astragalus membranaceus bunge.Effection as follows: 1. antihypertensive activity 2.cardiac activity 3.diuretic activity 4.significantly inhibited the formation of lipid peroxides Package type: Vacuum plastic bags,2.5kg/bags,10kg/carton,20kg/carton,25kg/carton.