Commonly occurring product ions for PS(11:0/25:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
790.5604Precursor ion [M-H]-
703.5283Loss of serine from precursor ion
535.3769Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
517.3664Neutral loss of sn1 RCOOH group and serine from [M-H]-
381.3738sn2 RCOO- ion
339.1578Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
321.1473Neutral loss of sn2 RCOOH group and serine from [M-H]-
185.1547sn1 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