Commonly occurring product ions for PC(20:0/22:1(13Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
906.6724Precursor ion [M.chloride]-
856.6801Loss of CH3 and chloride from precursor ion
785.6066Loss of choline and chloride from precursor ion
562.3878Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
544.3773Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
536.3722Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
518.3616Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
337.3112sn2 RCOO- ion
311.2956sn1 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