Commonly occurring product ions for PC(20:0/23:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
922.7037Precursor ion [M.chloride]-
872.7114Loss of CH3 and chloride from precursor ion
801.6379Loss of choline and chloride from precursor ion
578.4191Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
560.4086Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
536.3722Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
518.3616Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
353.3425sn2 RCOO- ion
311.2956sn1 RCOO- 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