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Separation of (R)- and (S)-naproxen using micellar chromatography and an alpha 1-acid-glycoprotein column: application for chiral monitoring in human liver microsomes by coupled-column chromatography
Department of Analytical Pharmaceutical Chemistry, Uppsala University Biomedical Centre, Uppsala Sweden.
Department of Analytical Pharmaceutical Chemistry, Uppsala University Biomedical Centre, Uppsala Sweden.
Department of Analytical Pharmaceutical Chemistry, Uppsala University Biomedical Centre, Uppsala Sweden.
1992 (Engelska)Ingår i: Journal of Biochemical and Biophysical Methods, ISSN 0165-022X, E-ISSN 1872-857X, Vol. 25, nr 4, s. 273-84Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A column-switching system for fast determination of (R)- and (S)-naproxen in liver microsomes has been developed. The centrifuged sample was injected directly onto a pre-column with octadecylcoated silica. The retained analytes were then directed to an alpha 1-AGP column using a mobile phase composed of phosphate buffer (pH 6.5), dimethylocytylamine (30 mM) and the nonionic surfactant, Tween 20 (40 g/l). The method gave high absolute recoveries and good repeatabilities: 99.6% (1.7% relative standard deviation) and 94.9% (2.4% R.S.D.) for the (R)- and (S)-naproxen, respectively. The use of a surfactant in combination with an aliphatic amine in the mobile phase involves reduced retention times with retained enantioselectivity. Furthermore, the presence of the surfactant makes it possible to inject biological samples directly into the chromatographic system.

Ort, förlag, år, upplaga, sidor
1992. Vol. 25, nr 4, s. 273-84
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URN: urn:nbn:se:ltu:diva-5037DOI: 10.1016/0165-022X(92)90021-2Lokalt ID: 30e78000-e766-11db-8a98-000ea68e967bOAI: oai:DiVA.org:ltu-5037DiVA, id: diva2:977911
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Godkänd; 1992; 20070410 (andbra)

Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-01-12Bibliografiskt granskad

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