Commonly occurring product ions for PS(22:2(13Z,16Z)/37:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
1108.8890Precursor ion [M-H]-
1021.8570Loss of serine from precursor ion
703.5647Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
685.5542Neutral loss of sn1 RCOOH group and serine from [M-H]-
549.5616sn2 RCOO- ion
489.2987Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
471.2881Neutral loss of sn2 RCOOH group and serine from [M-H]-
335.2956sn1 RCOO- ion
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