Quantitative analysis of calycosin glycoside and formononetin in Radix Astragali from different sources Quantitative analysis of calycosin-7-O-β-D-glucoside and formononetin in Astraglus membranaceus var. mongholicus by different processing methods Investigation on Chemical Thmponentsof Derixtion of Radix Paeeniae and Radix Glycyrrhizae Determination of biochanin A and formononetin in Trifolium pratense extract by HPLC-ELSD and DAD Correlation of contents between soil nutrients and calycosin and formononetin in Hedysari Radix Chemical constituents in flavonoids from root of Glycyrrhiza uralensis Correlation on quality and ecotype of Astragalus membranaceus var. mongholicus Isolation of flavonoids from Spatholobus suberectus by high speed countercurrent chromatography and study on their anti-tumor activities Isolation of flavonoids from Spatholobus suberectus by high speed countercurrent chromatography and study on their anti-tumor activities RADIOIMMUNOASSAY FOR FORMONONETIN Studies on the Chemical Constituents of Sparganium stoloniferum Buch.-Ham. In vitro dissolution of Qishe Pills Quality evaluation system of Astragali Radix by chemometrics Chemical constituents from Periploca forestti Determination of four flavonoids from Yupingfeng prescription in different compatibility proportion by HPLC Determination of four flavonoids from Yupingfeng prescription in different compatibility proportion by HPLC Determination of daidzein,genistein,formononetin,and biochanin A in Millettla nitida var.hirsutissima extract by RP-HPLC Enzymatic extraction process of calycosin glucoside and pormononetin in Astragali Radix with quadratic general rotary unitized design