Abstract
Aim: The present study aimed to develop a UHPLC-MS/MS method for determination of vistusertib in biological matrix, and to describe the pharmacokinetic behavior of vistusertib in SD rats. Methodology & results: After protein precipitation with acetone and acetonitrile (1:1), the chromatographic separation was achieved on an Agilent Poroshell 120 EC-C18 column and detected with a SCIEX QTRAP 4500 mass spectrometer under positive ionization mode. The developed UHPLC-MS/MS method showed an excellent linearity within the range of 1.0-3000ng/ml with good accuracy and precision. Vistusertib showed a rapid absorption and reached the maximum concentration of 3532.2±678.0ng/ml 20-30min after oral administration in Sprague-Dawley rats. Conclusion: The established analytical method was fast, sensitive and robust, and successfully applied to describe the pharmacokinetic behavior of vistusertib following an oral administration in rats.
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