Commonly occurring product ions for PC(O-18:0/31:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
992.8183Precursor ion [M.chloride]-
942.8260Loss of CH3 and chloride from precursor ion
871.7525Loss of choline and chloride from precursor ion
494.3616Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
476.3510Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
465.4677sn2 RCOO- ion
405.2775Loss of choline, chloride and neutral loss of sn2 RCOOH group from precursor ion
224.0693Glycerophosphocholine with loss of CH3 and H2O
168.0431Phosphocholine with loss of CH3
152.9958Glycerol-3-phosphate ion with loss of H2O
96.9696H2PO4- ion (from phosphate)
78.9591PO3- ion (from phosphate)
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases