An UPLC–MS/MS method for the quantitation of vortioxetine in rat plasma: Application to a pharmacokinetic study
2015
Gu, Er-min | Huang, Chengke | Liang, Bingqing | Yuan, Lingjing | Lan, Tian | Hu, Guoxin | Zhou, Hongyu
In this work, a simple, sensitive and fast ultra performance liquid chromatography with tandem mass spectrometry (UPLC–MS/MS) method was developed and validated for the quantitative determination of vortioxetine in rat plasma. Plasma samples were processed with a protein precipitation. The separation was achieved by an Acquity UPLC BEH C18 column (2.1mm×50mm, 1.7μm) column with a gradient mobile phase consisting of 0.1% formic acid in water and acetonitrile. Detection was carried out using positive-ion electrospray tandem mass spectrometry via multiple reaction monitoring (MRM). The validated method had an excellent linearity in the range of 0.05–20ng/mL (R2>0.997) with a lower limit of quantification (0.05ng/mL). The extraction recovery was in the range of 78.3–88.4% for vortioxetine and 80.3% for carbamazepine (internal standard, IS). The intra- and inter-day precision was below 8.5% and accuracy was from −11.2% to 9.5%. No notable matrix effect and astaticism was observed for vortioxetine. The method has been successfully applied to a pharmacokinetic study of vortioxetine in rats for the first time, which provides the basis for the further development and application of vortioxetine.
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