Commonly occurring product ions for PC(O-16:0/18:2(9Z,12Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
743.5834Precursor ion [M+]-
728.5600Loss of CH3 and from precursor ion
657.4865Loss of choline and from precursor ion
466.3303Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
448.3197Neutral loss of sn2 RCOOH group, loss of CH3 and from precursor ion
377.2462Loss of choline, and neutral loss of sn2 RCOOH group from precursor ion
279.2330sn2 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