Commonly occurring product ions for PC(18:1(9Z)/20:5(5Z,8Z,11Z,14Z,17Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
805.5627Precursor ion [M+]-
790.5392Loss of CH3 and from precursor ion
719.4657Loss of choline and from precursor ion
526.2939Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
508.2834Neutral loss of sn1 RCOOH group, loss of CH3 and from precursor ion
506.3252Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and from precursor ion
488.3147Neutral loss of sn2 RCOOH group, loss of CH3 and from precursor ion
301.2173sn2 RCOO- ion
281.2486sn1 RCOO- ion
257.2275Loss of CO2 from sn2 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