Commonly occurring product ions for PC(16:0/18:1(9Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
759.5784Precursor ion [M+]-
744.5549Loss of CH3 and from precursor ion
673.4814Loss of choline and from precursor ion
506.3252Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
488.3147Neutral loss of sn1 RCOOH group, loss of CH3 and from precursor ion
480.3096Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
462.2990Neutral loss of sn2 RCOOH group, loss of CH3 and from precursor ion
281.2486sn2 RCOO- ion
255.2330sn1 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