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Liquid chromatography–mass spectrometry method for the analysis of 1,4‐dimethylpyridinium in rat plasma – application to pharmacokinetic studies
Author(s) -
Szafarz Malgorzata,
SzymuraOleksiak Joanna,
Zakrzewska Agnieszka,
Walczak Maria,
Kus Kamil,
Gonciarz Anna
Publication year - 2013
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.2750
Subject(s) - chemistry , chromatography , formic acid , mass spectrometry , electrospray ionization , detection limit , selected reaction monitoring , electrospray , pharmacokinetics , triple quadrupole mass spectrometer , elution , acetonitrile , analytical chemistry (journal) , tandem mass spectrometry , medicine
A sensitive and specific liquid chromatography electrospray ionization–mass spectrometry method for determination of 1,4‐dimethylpyridinium (1,4‐DMP) in rat plasma has been developed and validated. Chromatography was performed on an Aquasil C 18 analytical column (4.6 × 150 mm, 5 µm, Thermo Scientific, Rockford, IL, USA) with isocratic elution using a mobile phase containing acetonitrile and water with an addition of 0.1% of formic acid. Detection was achieved by an Applied Biosystems MDS Sciex (Concord, Ontario, Canada) API 2000 triple quadrupole mass spectrometer. Electrospray ionization was used for ion production. The limit of detection in the single ion monitoring mode was found to be 10 ng/mL. The limit of quantification was 50 ng/mL. The precision and accuracy for both within‐day and between‐day determination of 1,4‐dimethylpyridinium was 2.4–7.56 and 90.93–111.48%. The results of this analytical method validation allow pharmacokinetic studies to be carried out in rats. The method was used for the pilot study of the pharmacokinetic behavior of 1,4‐DMP in rats after intravenous administration. Copyright © 2012 John Wiley & Sons, Ltd.