Commonly occurring product ions for PS(18:3(6Z,9Z,12Z)/22:2(13Z,16Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
836.5447Precursor ion [M-H]-
749.5127Loss of serine from precursor ion
489.2987Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
471.2881Neutral loss of sn1 RCOOH group and serine from [M-H]-
431.2204Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
413.2099Neutral loss of sn2 RCOOH group and serine from [M-H]-
335.2956sn2 RCOO- ion
277.2173sn1 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