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Type: Artigo de periódico
Title: Determination of pantoprazole in human plasma by LC-MS-MS using lansoprazole as internal standard
Author: Peres, O
Oliveira, CH
Barrientos-Astigarraga, RE
Rezende, VM
Mendes, GD
de Nucci, G
Abstract: An analytical method based on liquid chromatography with positive ion electrospray ionization (ESI) coupled to tandem mass spectrometry detection was developed for the determination of pantoprazole (CAS 102625-70-7) in human plasma using lansoprazole (CAS 103577-45-3) as the internal standard. The analyte and internal standard were extracted from the plasma samples by liquid/liquid extraction using diethyl-ether/dichloromethane (70:30; v/v) and chromatographed on a C-8 analytical column. The mobile phase consisted of acetonitrile/water/methanol (57:25:18; v/v/v) + 10 mmol/l acetic acid + 20 mmol/l ammonium acetate. The method has a chromatographic total run time of 4.5 min and was linear within the range 5.0-5,000 ng/mL. Detection was performed on a triple quadrupole tandem mass spectrometer by Multiple Reaction Monitoring (MRM). The intra- and inter-run precisions calculated from quality control (QC) samples were 4.2% and 3.2%, respectively. The accuracies as determined from QC samples were -5.0% (intra-run) and 2.0% (inter-run). The method herein described was employed in a bioequivalence study of two tablet formulations of pantoprazole.
Subject: CAS 102625-70-7
pantoprazole, determination in human plasma
proton pump inhibitor
Country: Alemanha
Editor: Ecv-editio Cantor Verlag Medizin Naturwissenschaften
Citation: Arzneimittel-forschung-drug Research. Ecv-editio Cantor Verlag Medizin Naturwissenschaften, v. 54, n. 6, n. 314, n. 319, 2004.
Rights: aberto
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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