Commonly occurring product ions for PC(18:4(9E,11E,13E,15E)/0:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
550.2706Precursor ion [M.chloride]-
500.2783Loss of CH3 and chloride from precursor ion
429.2048Loss of choline and chloride from precursor ion
275.2017sn1 RCOO- ion
242.0799Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
231.2118Loss of CO2 from sn1 RCOO- ion (PUFA)
224.0693Glycerophosphocholine with loss of CH3 and H2O
224.0693Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
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