Abstract: | Objective:Establish high performance liquid chromatography(HPLC) method for the determination of Baicalin content in Yinhuang Capsule.Methods:Use Alltima Shim-pack VP-ODSC10 column(250 mm×4.6 mm,5 μm) as detached dowel and a mixture of methanol and phosphoric acid(5050) as mobile phase with flow rate of 1.0 mL·min^-1.As detector a spectrophotometer set at 280nm.Results:Baicalin shows good linear correlation at 0.223~1.366 μg range.The regression equation is Y=2.40×104X+3.132×106(r=0.999 9).The average recovery is 99.88% and RSD is 0.89%.Reproducibility RSD is 0.3%.Conclusion:HPLC method for the determination of Baicalin content in Yinhuang Capsule is simple,rapid,sensitive,accurate and reproducible. |