title: Simultaneous determination of a new dihydropyridine calcium antagonist (MPC-1304) and its metabolite in dog plasma by high-performance liquid chromatography with electrochemical detection.
abstract: A rapid and sensitive high-performance liquid chromatographic analysis, with electrochemical detection, has been developed for the simultaneous determination of a new calcium-channel antagonist, (+/-)-methyl 2-oxopropyl-1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridinedi carboxylate (I, MPC-1304), and its active metabolite in dog plasma. The plasma extract with toluene was chromatographed on a reversed-phase column and detected by an electrochemical detector at + 0.92 V. Calibration curves were linear from 2.0 to 100.0 ng/ml, and the detection limit was ca. 0.25 ng/ml. This method is applicable to the simultaneous determination of I and its metabolite in dog plasma following the oral administration of I.
authors.affiliation: Pharmaceutical Research Laboratory, Taiho Pharmaceutical Co., Ltd., Tokushima, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Iida
authors.forename: Y
authors.initials: Y
authors.lastname: Kinouchi
authors.forename: Y
authors.initials: Y
authors.lastname: Takeichi
authors.forename: T
authors.initials: T
authors.lastname: Imai
authors.forename: M
authors.initials: M
authors.lastname: Otagiri
mesh_terms: D000818:Animals; D002121:Calcium Channel Blockers / Q000097:blood*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004095:Dihydropyridines / Q000097:blood*; D004285:Dogs; D004563:Electrochemistry; D014050:Toluene
chemical_list: D002121:Calcium Channel Blockers; D004095:Dihydropyridines; D014050:Toluene; C059427:aranidipine