Commonly occurring product ions for PE(28:0/22:5(4Z,7Z,10Z,13Z,16Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
932.7114Precursor ion [M-H]-
620.4661Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
602.4555Neutral loss of sn2 RCOOH group from [M-H]-
526.2939Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
508.2834Neutral loss of sn1 RCOOH group from [M-H]-
423.4208sn1 RCOO- ion
329.2486sn2 RCOO- ion
285.2588Loss of CO2 from sn2 RCOO- ion (PUFA)
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