Commonly occurring product ions for PS(O-18:0/4:1(3E)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
578.3464Precursor ion [M-H]-
491.3143Loss of serine from precursor ion
423.2881Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
405.2775Neutral loss of sn2 RCOOH group and serine from [M-H]-
152.9958Glycerol-3-phosphate ion with loss of H2O
96.9696H2PO4- ion (from phosphate)
85.0295sn2 RCOO- ion
78.9591PO3- ion (from phosphate)
Note: Structures of product ions may represent one of a number of possible isobaric molecules in some cases