Commonly occurring product ions for PS(22:1(11Z)/22:4(7Z,10Z,13Z,16Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
892.6073Precursor ion [M-H]-
805.5753Loss of serine from precursor ion
491.3143Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
485.2674Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
473.3038Neutral loss of sn2 RCOOH group and serine from [M-H]-
467.2568Neutral loss of sn1 RCOOH group and serine from [M-H]-
337.3112sn1 RCOO- ion
331.2643sn2 RCOO- ion
287.2744Loss of CO2 from sn2 RCOO- ion (PUFA)
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