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

m/zIon DescriptionStructure (click to enlarge)
764.5236Precursor ion [M-H]-
528.3096Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
510.2990Neutral loss of sn2 RCOOH group from [M-H]-
450.2626Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
432.2521Neutral loss of sn1 RCOOH group from [M-H]-
331.2643sn1 RCOO- ion
287.2744Loss of CO2 from sn1 RCOO- ion (PUFA)
253.2173sn2 RCOO- ion
152.9958Glycerol-3-phosphate ion with loss of H2O
140.0118Ethanolamine phosphate ion
122.0013Ethanolamine 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