... 24%,Total Lactones6%, Quercetin Glycoside/ Kaempferol Glycoside=0.8-1.2 , Bilobalides min2.6% , Rutin min3%,Ginkgolic Acid<0 ... .5ppm (USP standard)12) Pure ginkgo biloba extract:Total Flavone Glycosides 24%,Total Lactones6%, Quercetin ... ginkgo biloba extract:Total Flavone Glycosides 24%,Total Lactones6%, Quercetin Glycoside/ Kaempferol Glycoside=0.8-1.2, Ginkgolic Acid ...