Commonly occurring product ions for PE(O-20:0/11:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
662.5130Precursor ion [M-H]-
494.3616Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
476.3510Neutral loss of sn2 RCOOH group from [M-H]-
185.1547sn2 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