Commonly occurring product ions for PS(12:0/13:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
636.3882Precursor ion [M-H]-
549.3562Loss of serine from precursor ion
367.1891Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
353.1735Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
349.1786Neutral loss of sn1 RCOOH group and serine from [M-H]-
335.1629Neutral loss of sn2 RCOOH group and serine from [M-H]-
213.1860sn2 RCOO- ion
199.1704sn1 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