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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 22 (1999), S. 449-453 
    ISSN: 0935-6304
    Keywords: Capillary electrophoresis ; experimental design ; cyclodextrin ; chiral separation ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ---Orthogonal design and uniform design were used for the optimization of separation of enantiomers using 2,6-di-O-methyl-β-cyclodextrin (DM-β-CD) as a chiral selector by capillary zone electrophoresis. The concentration of DM-β-CD, buffer pH, running voltage, and capillary temperature were selected as variable parameters, their different effects on peak resolution were studied by the design methods. It was concluded that orthogonal design offers a rapid and efficient means for testing the importance of individual parameters and for determining the optimum operating conditions. However, for a large number of both factors and levels, uniform design is more efficient. The effect of addition of methanol and citric acid buffer on the separation of enantiomers was also examined.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    ISSN: 0173-0835
    Keywords: Capillary electrophoresis ; Enantiomer separation ; Chiral drugs ; Hydroxypropyl-γ-cyclodextrin ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: In an extended chiral drug screening program, enantioseparation of 86 racemic drugs was tested with hydroxypropyl-γ-cyclodextrin as chiral solvating agent (CSA). A total of 30 drugs out of 86 could be resolved in this straightforward approach. The number of experiments performed under identical conditions allows a statistical treatment of the data. The enantioseparation of the analytes is correlated with their interaction strength with the CSA. Hence, the concentration of the CSA is a crucial parameter for optimization of the enantioseparation, as shown by a subset of 23 examples.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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