Commonly occurring product ions for PC(O-18:0/2:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
551.3956Precursor ion [M+]-
536.3722Loss of CH3 and from precursor ion
494.3616Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
476.3510Neutral loss of sn2 RCOOH group, loss of CH3 and from precursor ion
465.2987Loss of choline and from precursor ion
405.2775Loss of choline, and neutral loss of sn2 RCOOH group from precursor 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)
59.0139sn2 RCOO- ion
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases