Commonly occurring product ions for PE(17:0/20:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
760.5862Precursor ion [M-H]-
508.3409Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
490.3303Neutral loss of sn1 RCOOH group from [M-H]-
466.2939Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
448.2834Neutral loss of sn2 RCOOH group from [M-H]-
311.2956sn2 RCOO- ion
269.2486sn1 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