12 CE in impurity profiling of drugs

Add time:09/27/2019    Source:sciencedirect.com

This chapter illustrates possible applications of capillary electrophoresis in impurity profiling. Due to the large peak capacity of the technique, it is extremely well suited to separate the main drug compound from its possible impurities that often have a very related chemical structure. Moreover, the high efficiencies obtained, as well as the low reagent consumption make it a viable alternative to liquid chromatography in many cases of drug analysis.After a short introduction into the relevance of impurity profiling for regulatory authorities, public health, and the pharmaceutical industry, an overview is presented based on the various modes of capillary electrophoresis that have been used in drug impurity analysis. The applications of capillary zone electrophoresis, non-aqueous capillary electrophoresis, micellar electrokinetic capillary chromatography, microemulsion electrokinetic capillary chromatography, capillary gel electrophoresis, and capillary electrochromatography are presented consecutively.

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