Commonly occurring product ions for PC(31:0/4:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
810.5785Precursor ion [M.chloride]-
760.5862Loss of CH3 and chloride from precursor ion
690.5443Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
689.5127Loss of choline and chloride from precursor ion
672.5338Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
465.4677sn1 RCOO- ion
312.1218Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
294.1112Neutral 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)
87.0452sn2 RCOO- ion
78.9591PO3- ion (from phosphate)
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases