Abstract
A liquid chromatography-mass spectrometry (LC-MS) assay was developed and validated for the quantification of lurasidone, an atypical antipsychotic drug, in rat plasma, bile, and urine. Rat plasma, bile, or urine samples were processed by liquid–liquid extraction and injected onto an LC-MS system for the quantification of lurasidone and ziprasidone (an internal standard). Lurasidone and ziprasidone were separated from endogenous substances using a Gemini C6-Phenyl column with mixture of acetonitrile and 0.1 % formic acid (80:20, v/v) as the mobile phase. Quantification was performed using the selected ion monitoring mode at m/z 493 for lurasidone and m/z 413 for the IS. The detector response was specific and linear for lurasidone in the concentration range 5–5,000 ng mL−1 The intra- and inter-day accuracy and precision of the method were determined to be within the acceptable criteria for assay validation guidelines. In addition, lurasidone was stable under a variety of processing and handling conditions. Lurasidone concentrations could be readily measured in rat plasma, bile, and urine samples up to 24 h after an intravenous or oral administration, suggesting that the assay can be used in pharmacokinetic studies of lurasidone in rats.
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Chae, YJ., Koo, TS. & Lee, KR. A Sensitive and Selective LC-MS Method for the Determination of Lurasidone in Rat Plasma, Bile, and Urine. Chromatographia 75, 1117–1128 (2012). https://doi.org/10.1007/s10337-012-2294-5
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DOI: https://doi.org/10.1007/s10337-012-2294-5