Commonly occurring product ions for PC(13:0/4:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
558.2968Precursor ion [M.chloride]-
508.3045Loss of CH3 and chloride from precursor ion
438.2626Loss of sn2 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
437.2310Loss of choline and chloride from precursor ion
420.2521Neutral loss of sn2 RCOOH group, loss of CH3 and chloride from precursor ion
312.1218Loss of sn1 acyl chain as ketene (RCH=C=O), CH3 and chloride from precursor ion
294.1112Neutral loss of sn1 RCOOH group, loss of CH3 and chloride from precursor ion
224.0693Glycerophosphocholine with loss of CH3 and H2O
213.1860sn1 RCOO- ion
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