LI Xiong, YANG Liu, ZENG Xing, et al. Determination Content of Isofraxidin and Rosmarinic Acid in Qingre Xiaoyanning Capsules by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2010, 16(11): 53-55.
LI Xiong, YANG Liu, ZENG Xing, et al. Determination Content of Isofraxidin and Rosmarinic Acid in Qingre Xiaoyanning Capsules by HPLC[J]. Chinese journal of experimental traditional medical formulae, 2010, 16(11): 53-55.DOI:
Objective: To establish an HPLC method for simultaneous determination of isofraxidin and rosmarinic acid in Qingre Xiaoyanning Capsules. Method: A HPLC method was used with a Waters XBridge C18 column(4.60 mm×250 mm
5 μm) and acetonitrile-0.1% phosphoric acid (21[DK1]∶79) as the mobile phase.The flow rate was 1.0 mL·min-1 and the detection wavelength was 340 nm. Result: The linear ranges of isofraxidin and rosmarinic acid were 0.32-3.2 μg(r=0.999 8) and 0.256 6-2.566 μg (r=0.999 9)
respectively. The average recoveries (n =6) were 97.3% (RSD 1.6%) and 98.9% (RSD 1.3%)
respectively. Conclusion: This HPLC method is simple
accurate and relilable
and can be used for the quality control of Qingre Xiaoyanning Capsules.