Commonly occurring product ions for PC(P-22:0/4:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
668.4427Precursor ion [M.chloride]-
618.4504Loss of CH3 and chloride from precursor ion
548.4086Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
547.3769Loss of choline and chloride from precursor ion
530.3980Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
459.3245Loss of choline, chloride and neutral loss of sn2 RCOOH group 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