Commonly occurring product ions for PC(11:0/21:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
733.5627Precursor ion [M+]-
718.5392Loss of CH3 and from precursor ion
647.4657Loss of choline and from precursor ion
550.3878Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
532.3773Neutral loss of sn1 RCOOH group, loss of CH3 and from precursor ion
410.2313Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
392.2208Neutral loss of sn2 RCOOH group, loss of CH3 and from precursor ion
325.3112sn2 RCOO- ion
224.0693Glycerophosphocholine with loss of CH3 and H2O
185.1547sn1 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