title: High-performance liquid chromatographic determination of sotalol in plasma. I. Application to the disposition of sotalol enantiomers in humans.
abstract: Two high-performance liquid chromatographic analytical methods have been developed for the measurement of dl-sotalol or d-sotalol and l-sotalol in plasma, using dl-atenolol as internal standard. Quantitation of dl-sotalol was carried out, following solid-phase extraction, on a 5-microns C18 reversed-phase column, with a mobile phase containing acetonitrile, ion-pairing reagent and distilled water, using ultraviolet detection at 235 nm. Quantitation of d-sotalol and l-sotalol was based on derivatisation with the chiral agent S-(-)-alpha-methylbenzyl isocyanate, followed by chromatographic separation on a 3-microns C18 reversed-phase column, with a mobile phase containing methanol, glacial acetic acid and distilled water, with fluorimetric detection at 220 nm excitation and 300 nm emission. A preliminary application of the latter method suggests that the disposition of sotalol in humans is not enantioselective.
authors.affiliation: Department of Clinical Pharmacology, Queen Elizabeth Hospital, Woodville South, South Australia.
authors.forename: B C
authors.initials: BC
authors.lastname: Sallustio
authors.forename: R G
authors.initials: RG
authors.lastname: Morris
authors.forename: J D
authors.initials: JD
authors.lastname: Horowitz
mesh_terms: D000368:Aged; D002851:Chromatography, High Pressure Liquid; D006801:Humans; D008297:Male; D008875:Middle Aged; D013015:Sotalol / Q000097:blood* / Q000493:pharmacokinetics; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism
chemical_list: D013015:Sotalol