title: Development of a method for simultaneous determination of eflucimibe and its three major metabolites in rat plasma by liquid chromatography/electrospray tandem mass spectrometry: a preliminary study.
abstract: A high-performance liquid chromatography/electrospray ionisation tandem mass spectrometry (HPLC/ESI-MS/MS) method has been developed for the simultaneous determination of eflucimibe, a powerful acyl-coenzyme A cholesterol O-acyltransferase (ACAT) inhibitor, and its main metabolites, in plasma. The ESI and MS/MS parameters were investigated and optimised for each of the four compounds in the positive ion mode. Plasma samples were deproteinised by precipitation with acetonitrile and directly analysed by HPLC/ESI-MS/MS in less than 4 min. Quantitation was performed in the multiple reaction monitoring (MRM) mode for highest sensitivity, selecting the protonated molecules [M+H](+) as precursor ions. The method was demonstrated to be specific and sensitive, and a linear response was observed within a 1-25 ng/mL concentration range. Correlation coefficients (r(2)) greater than 0.9960 were obtained by least-squares regression, and limits of detection down to 0.2 ng/mL were calculated. Therefore, this HPLC/ESI-MS/MS method appears to be an efficient tool, able to provide valuable information for a pharmacological purpose.
authors.affiliation: Institut de Chimie Organique et Analytique (I.C.O.A.), Université d'Orléans, UMR CNRS 6005, BP 6759, 45067 Orléans Cedex 2, France.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Mesplet
authors.forename: Philippe
authors.initials: P
authors.lastname: Morin
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Ribet
mesh_terms: D000813:Anilides / Q000097:blood*; D000818:Animals; D000924:Anticholesteremic Agents / Q000097:blood*; D002851:Chromatography, High Pressure Liquid; D051381:Rats; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
chemical_list: D000813:Anilides; D000924:Anticholesteremic Agents; C418062:eflucimibe