title: Enantiomeric separation of norgestrel by reversed phase high-performance liquid chromatography using eluents containing hydroxypropyl-beta-cyclodextrin in stereoselective skin permeation study.
abstract: The chiral separation of norgestrel enantiomers using reversed-phase high-performance liquid chromatography (RP-HPLC) was studied with hydroxypropyl-beta-cyclodextrin (HP-beta-CD) as chiral mobile phase additive. The effect of mobile phase composition, concentration of HP-beta-CD and column temperature on enantioselective separation were investigated. The quantification properties of the developed RP-HPLC method were examined. A baseline separation of norgestrel enantiomers was achieved on a Agilent ZORBAX Eclipse XDB-C8 column (150 mm x 4.6 mm i.d., 5 microm). The mobile phase was a mixture of acetonitrile and phosphate buffer (pH 5.0, 20 mM) containing 25 mM HP-beta-CD (30:70, v/v) with a flow rate of 1.0 ml/min. The UV detector was set at 240 nm. Calibration curves were linear (n=8) in the range of 0.2-25 microg/ml, the limit of detection and quantitation were 0.10 and 0.20 microg/ml, respectively, for racemic norgestrel. The values of RSD of repeatability and intermediate precision for spiked sample were less than 4.8%. The method was successfully applied to the enantioselective determination of this drug in stereoselective skin permeation study.
authors.affiliation: Department of Pharmaceutical Analysis and Drug Metabolism, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, PR China.
authors.forename: Jincui
authors.initials: J
authors.lastname: Ye
authors.forename: Guosheng
authors.initials: G
authors.lastname: Chen
authors.forename: Su
authors.initials: S
authors.lastname: Zeng
mesh_terms: D000073738:2-Hydroxypropyl-beta-cyclodextrin; D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D051379:Mice; D009644:Norgestrel / Q000302:isolation & purification* / Q000493:pharmacokinetics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012869:Skin Absorption; D013237:Stereoisomerism; D047392:beta-Cyclodextrins
chemical_list: D047392:beta-Cyclodextrins; D000073738:2-Hydroxypropyl-beta-cyclodextrin; D009644:Norgestrel