Tentative identification of gefitinib metabolites in non-small-cell lung cancer patient plasma using ultra-performance liquid chromatography coupled with triple quadrupole time-of-flight mass spectrometry
Fig 1
(A) Chemical structure of gefitinib and assigned atomic numbers. (B) Full-scan mass spectrum of gefitinib. (C) MS/MS spectrum at m/z 447.1600 and fragment pattern assignment of gefitinib.