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- W1992168586 abstract "β-cyclodextrin (CD) and its derivatives HP-β-CD, DM-β-CD, and TM-β-CD have been employed as chiral selectors for the separation of three nonsteroidal antiinflammatory drugs (NSAIDs) and anticoagulant at relatively low concentration (8–15 mM) by capillary zone electrophoresis (CZE). In this study, baseline separation was achieved for ibuprofen, ketoprofen, naproxen, and warfarin. It was found that the addition of 0.1% hydroxypropyl methyl cellulose (HPMC) was effective for separation. Under these conditions, the S-(+) enantiomer eluted before R-(−) in terms of ibuprofen; the calculated energy values obtained from the molecular modeling correlated well with the elution order. An equation for calculating the pKa values by capillary electrophoresis was introduced, and the pKa values of the four chiral drugs at 25°C were obtained based on the equation. The value pKa + 0.5 is proposed to be the suitable pH of the background electrolyte for the separation of chiral compounds containing a carboxylic group. Chirality 11:56–62, 1999. © 1999 Wiley-Liss, Inc." @default.
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- W1992168586 date "1999-01-01" @default.
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- W1992168586 title "Enantiomeric resolution of some nonsteroidal antiinflammatory and anticoagulant drugs using ?-cyclodextrins by capillary electrophoresis" @default.
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- W1992168586 doi "https://doi.org/10.1002/(sici)1520-636x(1999)11:1<56::aid-chir10>3.0.co;2-f" @default.
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