Commonly occurring product ions for PS(18:2(9Z,12Z)/22:1(11Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
840.5760Precursor ion [M-H]-
753.5440Loss of serine from precursor ion
491.3143Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
473.3038Neutral loss of sn1 RCOOH group and serine from [M-H]-
433.2361Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
415.2255Neutral loss of sn2 RCOOH group and serine from [M-H]-
337.3112sn2 RCOO- ion
279.2330sn1 RCOO- 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