BIOANALYTICAL METHOD DEVELOPMENT AND VALIDATION OF ENTRECTINIB IN RAT PLASMA BY LIQUID CHROMATOGRAPHY–TANDEM MASS SPECTROMETRY
DOI:
https://doi.org/10.22159/ajpcr.2020.v13i11.39005Keywords:
Nil, Entrectinib, D4 - entrectinibAbstract
Objective: The objective of the study was to develop and validate the bioanalytical liquid chromatography–mass spectrometry (LCMS/MS) method for the estimation of entrectinib in bulk and pharmaceutical drugs in rat plasma.
Methods: Chromatographic separation of entrectinib with D4-entrectinib as internal standard (IS) was achieved using Waters Alliance high-performance liquid chromatography system, quaternary gradient pump of e2695, using Luna, 250×4.6 mm, 5 μm column and the mobile phase containing 0.1% formic acid and acetonitrile (ACN) within the ratio of 70:30% v/v. The flow was 1.0 ml/min; detection was carried out by absorption at 294 nm using a photodiode array detector at ambient temperature.
Results: The peak of entrectinib was eluted at retention times of 5.225 min. The multiple reaction monitoring was 560.6/475.1 (m/z) for entrectinib and 580.6/496.3 (m/z) for IS entrectinib (D4). The linearity range was 1–20 ng/ml with a regression coefficient of 0.999. % relative standard deviation of peak areas of all measurements always <2.0.
Conclusion: The method was successfully validated and it had been found to be within limits for accuracy, precision, and linearity and it is stable under analytical conditions used.
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