Commonly occurring product ions for PC(20:5(5Z,8Z,11Z,14Z,17Z)/21:0)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
884.5942Precursor ion [M.chloride]-
834.6018Loss of CH3 and chloride from precursor ion
763.5283Loss of choline and chloride from precursor ion
550.3878Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
532.3773Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
526.2939Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
508.2834Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
325.3112sn2 RCOO- ion
301.2173sn1 RCOO- ion
257.2275Loss 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