Commonly occurring product ions for PC(18:4(6Z,9Z,12Z,15Z)/18:1(11Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
814.5159Precursor ion [M.chloride]-
764.5236Loss of CH3 and chloride from precursor ion
693.4501Loss of choline and chloride from precursor ion
506.3252Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
500.2783Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
488.3147Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
482.2677Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
281.2486sn2 RCOO- ion
275.2017sn1 RCOO- ion
231.2118Loss of CO2 from sn1 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