高效液相法测定双黄连含片中连翘苷的含量

 目的建立高效液相法测定双黄连含片中连翘含量。方法NOVA-PAKC18（250mm*4.6mm,10um）色谱柱，流动相为已腈-水（25：75），流速为1.0mL·min-1，检测波长为277nm.结果连翘苷在0.432～2.590ug范围内呈良好的线性关系，回归方程式Y=595.57X+1.619(r=10000)，平均回收率为97.50%，RSD为1.41%，重现性RSD为1.98%。结论本法简便，快速，灵敏，准确。重现性好，可作为双黄连含片中连翘苷的质量标准。

Determination of phillyrin in Shuanghuanglian tablets by HPLC

OBJECTIVE A RP-HPLC method was established for the determination of phillyrin in Shuanghuanglian tablets.METHOD The Nova-Pak C18 column (250 mmX 4.6 mm, 10 f*m) was used. The mobile phase was consisted of acetonitrile-water(25:75) with the flow rate at 1.0 mL- min～1 and the UV detection wavelength was at 277 nm, RESULTS The calibration curve was in good linearity over the range of 0.432~2.59 /ig.and the regression equation was V = 595.57 X + 1.619( r = 1.000 0). The average recovery was 97.50% (RSD = 1.41 % n = 5) ,RSD of reproduction was 1. 98% ( n = 5). CONCLUSION The method is simple,quick,sensitive,accurate,reproducible and can be used to control the quality of Shuanghuanglian tablets.