Simultaneous determination of the counter ion and possible impurity from the synthetic route in the pharmaceutical substance prasugrel hydrochloride

•Simultaneous determination of counter ion and impurity of prasugrel hydrochloride.•Sample preparation procedure prevents sample degradation and allows it to dissolve.•The developed method fulfilled all validation acceptance criteria.•The method is suitable for standard quality control as well as stability testing.

A fast and selective capillary electrophoresis method was developed and validated for the simultaneous determination of the hydrochloride and acetic acid content in prasugrel hydrochloride. Because of the poor chromophore, the indirect detection was chosen. Among different compositions studied as the background electrolyte, the pyromellitic acid with diethylamine (DEA) and myristyltrimethylammonium bromide (TTAB) was chosen. During the validation the specificity, linearity, accuracy, precision, range, and stability of the sample solution were confirmed. The results indicate that the method is suitable for the determination of the counter ion and impurity from the synthetic route of the pharmaceutical drug substance in the same assay

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