UPLC–MS/MS Method for Determination of Bepotastine in Human Plasma
A sensitive and rapid method for quantitation of bepotastine in human plasma has been established using ultra performance liquid chromatography–electrospray ionization tandem mass spectrometry (UPLC–ESI–MS/MS). Valsartan was used as an internal standard. Bepotastine and internal standard in plasma s...
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Veröffentlicht in: | Journal of chromatographic science 2014-09, Vol.52 (8), p.886-893 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A sensitive and rapid method for quantitation of bepotastine in human plasma has been established using ultra performance liquid chromatography–electrospray ionization tandem mass spectrometry (UPLC–ESI–MS/MS). Valsartan was used as an internal standard. Bepotastine and internal standard in plasma sample were extracted using ethylacetate (liquid–liquid extraction). A centrifuged upper layer was then evaporated and reconstituted with the mobile phase of acetonitrile—5 mM ammonium formate (pH 3.5) (85:15, v/v). The reconstituted samples were injected into a phenyl column. Using MS/MS in the multiple reaction monitoring mode, bepotastine and valsartan were detected without severe interference from human plasma matrix. Bepotastine produced a protonated precursor ion ([M+H]+) at m/z 389 and a corresponding product ion at m/z 167. And the internal standard produced a protonated precursor ion ([M+H]+) at m/z 436 and a corresponding product ion at m/z 291. Detection of bepotastine in human plasma by the UPLC–ESI–MS/MS method was accurate and precise with a quantitation limit of 0.2 ng/mL. The validation, reproducibility, stability and recovery of the method were evaluated. The method has been successfully applied to pharmacokinetic studies of bepotastine in human plasma. |
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ISSN: | 0021-9665 1945-239X |
DOI: | 10.1093/chromsci/bmt135 |