Abstract
In this study, a new approach to the enantioseparation of nefopam hydrochloride by means of affinity electrokinetic chromatography (AEKC) with chondroitin sulfate A belonging to linear ionic polysaccharides has been developed. The difference in the antinociceptive activity of the enantiomers of nefopam was demonstrated in some studies, and the method established in this paper allowed complete separation of nefopam. Especially, there are no reports concerned with the enantioselective separation of nefopam using chondroitin sulfate A as chiral selectors in CE. During the course of this work, both migration time and enantioseparation of nefopam were influenced by several parameters such as pH of the BGE, selector concentration, capillary temperature and applied voltage. Consequently, these parameters were systematically optimized in order to obtain the optimum enantioseparation of nefopam. Moreover, comparison of the influences of the studied parameters was further investigated using univariate analysis of variance as a calculation method by Statistical Product and Service Solutions (SPSS) in this paper. Finally, a mechanism of enantiorecognition in AEKC towards the enantiomers of nefopam with chondroitin sulfate A was described.
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