Commonly occurring product ions for PC(22:4(7Z,10Z,13Z,16Z)/12:0)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
788.5003Precursor ion [M.chloride]-
738.5079Loss of CH3 and chloride from precursor ion
667.4344Loss 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
424.2470Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
406.2364Neutral 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)
224.0693Glycerophosphocholine with loss of CH3 and H2O
199.1704sn2 RCOO- 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