For the sensitive and selective detection of the target PAs,LC-ESI-MS/MS-MRM mode was applied, and specific transitionions were selected to reduce any potential matrix effects. Theselection of an appropriate transition ion in the MRM mode couldprovide unequivocal identification of the analytes and avoid falsepositives. For the selection of transition ions in the MRM mode,MS/MS fragmentations of PAs were preferentially investigatedaccording to their structural characteristics. The monitoring of aspecific precursor-product ion transition in the MRM mode couldsignificantly couldsignificantly enhance the analytical sensitivity and selectivity fortrace amounts of PAs in complex food matrices.The aim of this study was to develop an analytical methodfor the rapid quantification of PAs in high lipid foodstuffs by LC-MS/MS. This study included the following: (i) high efficiency ofFLP for the rapid elimination of lipids, (ii) elution profiles of PAson SCX-SPE cartridge with variation pH of eluent for cleanup ofPAs, (iii) plausible MS/MS fragmentation pathways of PAs for theselection of appropriate transition ions in MRM mode, (iv) precisequantification and identification of PAs in complex matrices by LC-ESI-MS/MS-MRM mode, (v) method validation in terms of linearity,limits of detection and quantification, and precision and accuracy,and (vi) a demonstration of the effectiveness of the establishedmethod applied for the monitoring of PAs in high lipid foodstuffs.