Optimization of capillary electrophoretic enantioseparation for basic drugs with native β-CD as a chiral selector

✍ Scribed by Nerissa L. Deñola; Noel S. Quiming; Alicia P. Catabay; Yoshihiro Saito; Kiyokatsu Jinno

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 222 KB
• Volume: 27
• Category: Article
• ISSN: 0173-0835
• DOI: 10.1002/elps.200500943

✦ Synopsis

Abstract

This study presents the advantages of the 20 µm inner diameter (id) capillary for the enantioseparation of ten basic drugs with native β‐CD as the chiral selector. The apparent binding constants of each enantiomeric pair were determined to calculate the optimum β‐CD concentration ([β‐CD]~opt~) and the optimization was subsequently carried out. Comparison of the 20 µm id with 50 µm id were made in terms of the results obtained in the optimization and detection limits. Applying the optimum conditions for each compound, reproducible results (RSD from 0–3; n>5) were obtained for the 20 µm id capillary. Although the sensitivity is lower in the 20 µm id capillary, the LOD determined using this capillary is still found to be acceptable for the ten basic drugs studied. Enhanced resolution and faster analysis times were the main advantages observed with the use of this capillary in enantioseparation.