Commonly occurring product ions for PC(22:2(13Z,16Z)/22:4(7Z,10Z,13Z,16Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
924.6255Precursor ion [M.chloride]-
874.6331Loss of CH3 and chloride from precursor ion
803.5596Loss of choline and chloride from precursor ion
560.3722Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
556.3409Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
542.3616Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
538.3303Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
335.2956sn1 RCOO- ion
331.2643sn2 RCOO- ion
287.2744Loss of CO2 from sn2 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