Commonly occurring product ions for PC(18:3(9Z,12Z,15Z)/18:3(9Z,12Z,15Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
777.5314Precursor ion [M+]-
762.5079Loss of CH3 and from precursor ion
691.4344Loss of choline and from precursor ion
502.2939Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
502.2939Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
484.2834Neutral loss of sn2 RCOOH group, loss of CH3 and from precursor ion
484.2834Neutral loss of sn1 RCOOH group, loss of CH3 and from precursor ion
277.2173sn2 RCOO- ion
277.2173sn1 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