Commonly occurring product ions for PC(20:2(5Z,8Z)/2:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
624.3438Precursor ion [M.chloride]-
574.3514Loss of CH3 and chloride from precursor ion
532.3409Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
514.3303Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
503.2779Loss of choline and chloride from precursor ion
307.2643sn1 RCOO- ion
284.0905Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
266.0799Neutral loss of sn1 RCOOH group, loss of CH3 and chloride 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