Liquid chromatographic analysis of propranolol enantiomers in human blood using precolumn derivatization with (+)-1-(9-fluorenyl)ethyl chloroformate. |
| |
| Authors: | A Roux G Blanchot A Baglin B Flouvat |
| |
| Affiliation: | Laboratoire de Toxicologie et de Pharmacocinétique, H?pital Ambroise Paré, Boulogne Billancourt, France. |
| |
| Abstract: | A method for the determination of the R-(+) and S-(-) enantiomers of propranolol in blood was developed. After extraction with heptane-isopentanol and derivatization with (+)-1-(9-fluorenyl)ethyl chloroformate, excess reagent was removed using solid-phase extraction. The enantiomers were separated on an achiral, reversed-phase, radially compressed column, and detected by fluorescence with excitation and emission wavelengths of 260 and 340 nm, respectively. The limit of quantification was 0.5 ng/ml. This method was used for pharmacokinetic analysis of propranolol enantiomers after administration of immediate-release (80 mg) or sustained-release (160 mg) racemic propranolol. |
| |
| Keywords: | |
|
|
