Commonly occurring product ions for PS(26:0/29:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
1056.8577Precursor ion [M-H]-
969.8257Loss of serine from precursor ion
591.4395Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
573.4290Neutral loss of sn1 RCOOH group and serine from [M-H]-
549.3926Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
531.3820Neutral loss of sn2 RCOOH group and serine from [M-H]-
437.4364sn2 RCOO- ion
395.3895sn1 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