Commonly occurring product ions for PE(18:2(9Z,12Z)/18:2(9Z,12Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
738.5079Precursor ion [M-H]-
476.2783Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
476.2783Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
458.2677Neutral loss of sn1 RCOOH group from [M-H]-
458.2677Neutral loss of sn2 RCOOH group from [M-H]-
279.2330sn1 RCOO- ion
279.2330sn2 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