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Enantiomeric Separation of Basic Drugs with Partially Filled Serum Albumin as Chiral Selector in Capillary Electrophoresis

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Abstract

A reliable method is presented for the chiral separation of three basic drugs (mexiletine, chlorpheniramine and propranolol) with serum albumins (human and porcine, HSA and PSA) as chiral selectors by capillary electrophoresis in combination with the partial filling technique. Based on the systematic optimization of operation variables, the chiral separation of mexiletine, chlorpheniramine and propranolol was achieved in the pH 7.4 phosphate buffer by using HSA, PSA and PSA as selectors, respectively. The chiral recognition ability of HSA and PSA was compared. HSA and PSA show a different chiral recognition ability for each of the three drugs. In addition, the association constants between enantiomeric drugs and proteins were determined to be 2.00 and 3.80 × 102 M–1 for mexiletine and HSA, 0.59 and 1.12 × 103 M–1 for chlorpheniramine and PSA, and 0.87 and 1.42 × 103 M–1 for propranolol and PSA. The method for the chiral separation and determination of association constants possesses the advantages of simple performance, effective avoiding of the interference of the UV detection from protein, and lowering of the reagent consumption.

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Authors and Affiliations

  1. Institute of Analytical Science, Department of Chemistry, Nanjing University, Nanjing, 210093, China

    Hui Xu, Xiaodong Yu & Hongyuan Chen

Authors
  1. Hui Xu
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  2. Xiaodong Yu
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  3. Hongyuan Chen
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Correspondence to Hongyuan Chen.

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Xu, H., Yu, X. & Chen, H. Enantiomeric Separation of Basic Drugs with Partially Filled Serum Albumin as Chiral Selector in Capillary Electrophoresis. ANAL. SCI. 20, 1409–1413 (2004). https://doi.org/10.2116/analsci.20.1409

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  • DOI: https://doi.org/10.2116/analsci.20.1409

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