Commonly occurring product ions for PC(O-22:0/4:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
670.4584Precursor ion [M.chloride]-
620.4661Loss of CH3 and chloride from precursor ion
550.4242Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
549.3926Loss of choline and chloride from precursor ion
532.4136Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
461.3401Loss 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)
87.0452sn2 RCOO- ion
78.9591PO3- ion (from phosphate)
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases