Enhancement of selectivity and resolution in the enantioseparation of uncharged compounds using mixtures of oppositely charged cyclodextrins in capillary electrophoresis (original) (raw)
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Use of cationic cyclodextrin for enantioseparation by capillary electrophoresis
Journal of Chromatography A, 1998
The usability of 2-hydroxy-3-trimethylammoniopropyl-β-cyclodextrin for chiral discrimination of various basic and acidic substances is described. The dependence of chiral separation on cyclodextrin (CD) concentration and pH value was investigated. Altering the pH value the migration order of the enantiomers of acidic analytes could be changed. Due to the quaternary ammonium structure of the CD molecule, a reversal of the electroosmotic
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