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Determination of Tropisetron in Human Plasma by Liquid Chromatography Tandem Mass Spectrometry

A fast and sensitive liquid chromatography tandem mass spectrometric method has been developed and validated for the determination of tropisetron in human plasma. The HPLC separation was performed on a Phenomenex Synergi Fusion RP80 column using acetonitrile −13 mM ammonium acetate – acetic acid (30:70:0.035, v/v) as the isocratic mobile phase. The assay was linear over the concentration range 0.5–128 ng/mL. The intra- and inter-assay precision was less than 11.6% for tropisetron. The method was successfully used to characterize the pharmacokinetic profiles of tropisetron in 20 healthy volunteers after an intravenous infusion of 5 mg tropisetron.