穿琥宁溶液的稳定性研究

目的研究穿琥宁溶液在不同条件下的稳定性。方法采用经典恒温法考察了穿琥宁在不同pH值的磷酸盐缓冲液,相同pH值的不同缓冲盐溶液及不同浓度的枸橼酸盐缓冲液中的稳定性。结果穿琥宁在pH6.5时最为稳定;枸橼酸盐缓冲液能延缓其水解;枸橼酸盐的浓度不影响药物稳定性。结论穿琥宁溶液在不同条件下稳定性不同,该结果为穿琥宁的分析及相关制剂的研究提供了参考。

Study on the Stability of Potassium Dehydroandrographolide Succinate Solution in Different Conditions

Objective To study the stability of potassium dehydroandrographolide succinate solution in different conditions.Methods The classical thermostatic test was adopted to investigate the stability of potassium dehydroandrographolide succinate in phosphate buffer solutions of different pH values,in different buffer solutions of the same pH value and in citrate buffer solutions of different concentrations.Results The stability of potassium dehydroandrographolide succinate solution was different at different pH values and was the best at pH 6.5.In various buffer solutions of pH 6.5,the hydrolyzation of potassium dehydroandrographolide succinate solution was delayed by citrate buffer solution,and the stability of the solution had no correlation with the concentration of citrate buffer solution.Conclusion The stability of potassium dehydroandrographolide succinate solution varies in different conditions.This will supply a reference for the study on potassium dehydroandrographolide succinate solution and its similar preparations.