Capillary electrophoresis (CE) coupled to tandem mass spectrometry was applied to the chiral separation of baclofen using sulfobutylether-beta-cyclodextrin chiral selector in partial filling counter current mode. On-line UV detection was simultaneously used. Method optimization was performed by studying the effect of cyclodextrin and BGE concentration as well as sheath liquid composition on analyte migration time and enantiomeric resolution. The cyclodextrin showed stereoselective complexation towards baclofen enantiomers, allowing chiral resolution at low concentration. The CE capillary protrusion from the ESI needle relevantly affected the chiral resolution and the analyte migration time. Complete enantiomeric separation was obtained by using 0.25 M formic acid BGE containing 1.75 mM of chiral selector and water/methanol (30:70, v/v) 3% formic acid as sheath liquid. The method exhibited a LOD of 0.1 mu g/mL (racemic concentration) in MS3 product ion scan mode of detection and was applied to the analysis of racemic baclofen in pharmaceutical formulations. (c) 2008 Elsevier B.V. All rights reserved.

Desiderio, C., Rossetti, D. V., Perri, F., Giardina, B., Messana, I., Castagnola, M., Enantiomeric separation of baclofen by capillary electrophoresis tandem mass spectrometry with sulfobutylether-beta-cyclodextrin as chiral selector in partial filling mode., <<JOURNAL OF CHROMATOGRAPHY. B>>, 2008; (875): 280-287 [http://hdl.handle.net/10807/26015]

Enantiomeric separation of baclofen by capillary electrophoresis tandem mass spectrometry with sulfobutylether-beta-cyclodextrin as chiral selector in partial filling mode.

Desiderio, Claudia;Rossetti, Diana Valeria;Perri, Fabio;Giardina, Bruno;Messana, Irene;Castagnola, Massimo
2008

Abstract

Capillary electrophoresis (CE) coupled to tandem mass spectrometry was applied to the chiral separation of baclofen using sulfobutylether-beta-cyclodextrin chiral selector in partial filling counter current mode. On-line UV detection was simultaneously used. Method optimization was performed by studying the effect of cyclodextrin and BGE concentration as well as sheath liquid composition on analyte migration time and enantiomeric resolution. The cyclodextrin showed stereoselective complexation towards baclofen enantiomers, allowing chiral resolution at low concentration. The CE capillary protrusion from the ESI needle relevantly affected the chiral resolution and the analyte migration time. Complete enantiomeric separation was obtained by using 0.25 M formic acid BGE containing 1.75 mM of chiral selector and water/methanol (30:70, v/v) 3% formic acid as sheath liquid. The method exhibited a LOD of 0.1 mu g/mL (racemic concentration) in MS3 product ion scan mode of detection and was applied to the analysis of racemic baclofen in pharmaceutical formulations. (c) 2008 Elsevier B.V. All rights reserved.
2008
Inglese
Desiderio, C., Rossetti, D. V., Perri, F., Giardina, B., Messana, I., Castagnola, M., Enantiomeric separation of baclofen by capillary electrophoresis tandem mass spectrometry with sulfobutylether-beta-cyclodextrin as chiral selector in partial filling mode., <<JOURNAL OF CHROMATOGRAPHY. B>>, 2008; (875): 280-287 [http://hdl.handle.net/10807/26015]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/26015
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact