Commonly occurring product ions for PC(22:4(7Z,10Z,13Z,16Z)/16:1(9Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
842.5472Precursor ion [M.chloride]-
792.5549Loss of CH3 and chloride from precursor ion
721.4814Loss 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
478.2939Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
460.2834Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
331.2643sn1 RCOO- ion
287.2744Loss of CO2 from sn1 RCOO- ion (PUFA)
253.2173sn2 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