... 24%, Lactones 6%HPLC, Ginkgolic Acid≤10ppm, Quercetin/ Kaempferol: 0.8-1.5)c.CP2010(Flavones 24%, ... Lactones 6%HPLC, Ginkgolic Acid≤10ppm, Quercetin/ Kaempferol: 0.8-1.2)d.USP31(Flavones 24%, ... Lactones 6%HPLC, Ginkgolic Acid≤5ppm, Quercetin/ Kaempferol: 0.8-1.0)e.EP6(Flavones 24%, ... Lactones 6%HPLC, Ginkgolic Acid≤1ppm, Quercetin/ Kaempferol: 0.8-1.0)Characteristic: Appearance:Yellow brown ...