STEREOSELECTIVE DETERMINATION OF THE ENANTIOMERS OF METHADONE IN PLASMA USING HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY

被引:36
作者
SCHMIDT, N [1 ]
BRUNE, K [1 ]
GEISSLINGER, G [1 ]
机构
[1] UNIV ERLANGEN NURNBERG,DEPT EXPTL & CLIN PHARMACOL & TOXICOL,UNIV STR 22,W-8520 ERLANGEN,GERMANY
来源
JOURNAL OF CHROMATOGRAPHY-BIOMEDICAL APPLICATIONS | 1992年 / 583卷 / 02期
关键词
D O I
10.1016/0378-4347(92)80552-2
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
An enantioselective high-performance liquid chromatographic assay for the quantification of methadone in human and beagle plasma is described. The procedure involves extraction of methadone from alkalized plasma into hexane-isoamyl alcohol (99:1, v/v). Stereoselective separation was achieved with a silica column with covalently bound alpha1-acid glycoprotein (Chiral-AGP) without any derivatization procedure. The detection wavelength was set at 215 nm. Using an internal standard provided reliable control of the extraction procedure as well as quantification of the enantiomers of methadone. The limit of quantification was found to be 2.5 ng/ml. The method was demonstrated to be sufficiently sensitive for stereoselective pharmacokinetic studies of methadone.
引用
收藏
页码:195 / 200
页数:6
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