Commonly occurring product ions for PC(22:4(7Z,10Z,13Z,16Z)/20:1(11Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
898.6098Precursor ion [M.chloride]-
848.6175Loss of CH3 and chloride from precursor ion
777.5440Loss of choline and chloride from precursor ion
556.3409Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
538.3303Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
534.3565Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
516.3460Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
331.2643sn1 RCOO- ion
309.2799sn2 RCOO- ion
287.2744Loss of CO2 from sn1 RCOO- ion (PUFA)
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