Abstract
Opposite affinity pattern of enantiomers of the antiparkinsonian chiral drug deprenyl (DEP) was observed towards various neutral and charged derivatives of -CD. The effect of the enantiomer migration order on the LOD of enantiomeric impurity of R-DEP (selegiline) was studied for the standard substances and in the tablets from three different suppliers. The influence of injection mode on the LOD of a minor enantiomeric impurity was also studied and the CE method was compared with the pharmacopoeial HPLC method using a commercially available chiral column Chiralcel OD-H. The optimized CE method was more suitable for low-level enantiomeric impurity determination in selegiline compared to the pharmacopoeial HPLC method.
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