title: High-performance liquid chromatographic analysis of pindolol enantiomers in human serum and urine using a reversed-phase cellulose-based chiral column.
abstract: Simple, sensitive and reliable high-performance liquid chromatographic methods are reported for the determination of pindolol enantiomers in human serum and urine. The methods involved a solid-phase extraction of serum and a direct injection of urine samples. The separation of R(+)- and S(-)-pindolol was accomplished on a reversed-phase cellulose-based chiral column with a mobile phase of 40:60 (v/v) acetonitrile-0.3 M aqueous sodium perchlorate at a flow-rate of 0.5 ml/min. The detection was achieved by monitoring the fluorescence emission of pindolol enantiomers at 310 nm with excitation at 270 nm. The limits of detection were 1.2 ng/ml of R(+)- and 4.3 ng/ml of S(-)-pindolol in serum, and 21 ng/ml of R(+)- and 76 ng/ml of S(-)-pindolol in urine. The external standard method was used for quantitation. The methods have been applied to the analysis of human serum and urine samples in a pharmacokinetic study.
authors.affiliation: Department of Medicinal Chemistry, College of Pharmacy, University of Georgia, Athens 30602-2352, USA.
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: J T
authors.initials: JT
authors.lastname: Stewart
authors.forename: M
authors.initials: M
authors.lastname: Ujhelyi
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000032:analysis* / Q000097:blood / Q000737:chemistry / Q000652:urine; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D010869:Pindolol / Q000032:analysis* / Q000097:blood / Q000652:urine; D015203:Reproducibility of Results; D013050:Spectrometry, Fluorescence; D013237:Stereoisomerism
chemical_list: D000319:Adrenergic beta-Antagonists; D010869:Pindolol