Commonly occurring product ions for PA(16:0/18:2(9Z,12Z)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
671.4657Precursor ion [M-H]-
433.2361Loss of sn1 acyl chain as ketene (RCH=C=O) from [M-H]-
415.2255Neutral loss of sn1 RCOOH group from [M-H]-
409.2361Loss of sn2 acyl chain as ketene (RCH=C=O) from [M-H]-
391.2255Neutral loss of sn2 RCOOH group from [M-H]-
279.2330sn2 RCOO- ion
255.2330sn1 RCOO- ion
171.0064Glycerol-3-phosphate ion
152.9958Glycerol-3-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