Enantioselective drug monitoring of (R)- and (S)- propranolol in human plasma via derivatization with optically active (R,R)-O,O-diacetyl tartaric acid anhydride.

W Lindner, M Rath, K Stoschitzky, G Uray

文献索引：J. Chromatogr. A. 487 , 375, (1989)

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摘要

A sensitive high-performance liquid chromatographic method was developed for the stereoselective assay of (R)- and (S)-propranolol in human plasma. The method involves diethyl ether extraction of the drugs and a racemic internal standard, N-tert.-butylpropranolol, followed by derivatization of the compounds with the chiral reagent (R,R)-O,O-diacetyl tartaric acid anhydride. The resulting diastereomeric derivatives were separated isocratically on a reversed-phase column. Quantitation was achieved by the peak-height ratio method with reference to the internal standard. The assay was accurate and reproducible in the concentration range 1-100 ng of (R)- and (S)-propranolol per ml plasma, using fluorescence detection at lambda ex 290 nm and lambda em 335 nm. The applicability of this method was demonstrated for the determination of concentration-time profiles of propranolol enantiomers in the course of comparative pharmacokinetic studies.

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