Commonly occurring product ions for PC(22:0/22:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
936.7194Precursor ion [M.chloride]-
886.7270Loss of CH3 and chloride from precursor ion
815.6535Loss of choline and chloride from precursor ion
564.4035Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
564.4035Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
546.3929Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
546.3929Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
339.3269sn2 RCOO- ion
339.3269sn1 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