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- Carlsson, Ylva, et al.
(författare)
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Non-aquoeus capillary electrophoretic separation of enantiomeric amines with (-)-2,3:4,6-di-O-isopropylidene-2-keto-L-gulonic acid as chiral counter ion
- 2001
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Ingår i: Journal of Chromatography A. - : Elsevier. - 0021-9673. ; 922:1-2, s. 303-311
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Tidskriftsartikel (refereegranskat)abstract
- (2)-2,3:4,6-Di-O-isopropylidene-2-keto-L-gulonic acid [(2)-DIKGA] has been introduced as a chiral counter ion innon-aqueous capillary electrophoresis. High enantioresolutions (R $3) were obtained for amines, e.g., pronethalol, labetalol Sand bambuterol. Methanol containing NaOH and (2)-DIKGA was used as the background electrolyte. The counter ionconcentration and the nature of the injection medium were found to affect the chiral separation. Covalent coating of thefused-silica capillary reduced the electro-osmotic flow resulting in improved enantioresolutions.
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