Commonly occurring product ions for PC(33:0/20:4(7E,10E,13E,16E)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
1054.7976Precursor ion [M.chloride]-
1004.8053Loss of CH3 and chloride from precursor ion
933.7318Loss of choline and chloride from precursor ion
718.5756Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
700.5651Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
528.3096Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
510.2990Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
493.4990sn1 RCOO- ion
303.2330sn2 RCOO- ion
259.2431Loss of CO2 from sn2 RCOO- ion (PUFA)
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