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目的:对复方磺胺甲噁唑片中甲氧苄啶的鉴别方法进行改进。方法:对鉴别的样品进行前处理,取样品适量,加氯仿溶解,将不溶于氯仿的淀粉滤过除去,滤液置水浴上蒸干,然后按药典方法进行鉴别。结果:改进法克服了按药典法鉴别时,显示的颜色与描述的颜色不一致的现象。结论:改进法简便,合理,可用于修改标准时参考。
Objective: To improve the method of identifying trimethoprim in compound sulfamethoxazole tablets. Methods: The identified samples were pretreated, take the appropriate amount of samples, dissolved in chloroform, the chloroform insoluble starch was removed by filtration, the filtrate was evaporated to dryness on a water bath, and then identified by the Pharmacopoeia method. Results: The improved method overcomes the phenomenon of inconsistency between the displayed color and the described color when identified by the Pharmacopoeia. Conclusion: The improved method is simple and reasonable, and can be used as a reference for revising the standard.