Commonly occurring product ions for PS(14:1(9Z)/18:4(6Z,9Z,12Z,15Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
724.4195Precursor ion [M-H]-
637.3875Loss of serine from precursor ion
429.2048Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
411.1942Neutral loss of sn1 RCOOH group and serine from [M-H]-
379.1891Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
361.1786Neutral loss of sn2 RCOOH group and serine from [M-H]-
275.2017sn2 RCOO- ion
231.2118Loss of CO2 from sn2 RCOO- ion (PUFA)
225.1860sn1 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