Studies on antihemorrhagic substances in herbs classified as hemostatics in Chinese medicine. VI On the antihemorrhagic principle in Sophora japonica L.

Abstract
The antihemorrhagic principle of Sophora japonica L. was isolated from the aqueous extract of dried buds by partition and Sephadex LH-20 column chromatography, and identified as quercetin [2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one].