Commonly occurring product ions for PS(14:1(9Z)/22:5(4Z,7Z,10Z,13Z,16Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
778.4665Precursor ion [M-H]-
691.4344Loss of serine from precursor ion
483.2517Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
465.2412Neutral 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]-
329.2486sn2 RCOO- ion
285.2588Loss 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