Objective To establish a method for the determination of gallic acid in Gongyanping Dispersible Tablet by HPLC.Method A HPLC method was performed on Hypersil ODS column(4.0?250 mm,5 ?m).The mobile phase was acetonitrile(0.2 %CH3OH)-water solution of 0.1 %triethylamine and 0.1 %phosphoric acid(1 ∶99).The detection wavelength was 220 nm and flow rate was 1.0 mL/min.Results Gallic acid showed a good linearity in the range of 0.022～0.352 ?g,r=0.999 9.The average recovery was 99.70 %,and RSD was 1.61 %.Conclusion This method is effective and can be used for the quality control of Gallic acid in Gongyanping Dispersible Tablet.

Objective To establish a method for the determination of geniposide in Bazheng Dispersible Tablet by HPI,C. Methods The HPLC was performed on a Hypersil ODS column(250 mm?4 mm,5?m).The mobile phase was acetoni- tril-water(11:89).The detection wavelength was at 238 nm and flow rate was 1.0 mL/min.Results Geniposide showed a good linearity in the range of 0.046～0.46?g,and r=0.999 9.The average recovery was 99.54%,and RSD was 1.42%。Conclusion This method is accurate and can be used for the quality control of Bazheng Dispersible Tablet.

Objective To determinate the content of Danshensu in Xingkenin g Capsules by HPLC.Methods HPLC with Hypersil ODS2 column was used, MeOH- 1 % acetic acid( 12:88) as a mobile phase and detection wavelength at 280nm.Re sults The linear range of Danshensu was in the range of 0.256～ 1.278 ? g. Th e average recovery of Danshensu was 102.73 % with a RSD of 1.34 % .Conclusio n The method is simple with a good reproducibility and can be used for the qu ality control of Xingkening Capsules.