Commonly occurring product ions for PS(37:0/32:0) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
1253.0768Precursor ion [M-H]-
1166.0448Loss of serine from precursor ion
703.5647Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
685.5542Neutral loss of sn2 RCOOH group and serine from [M-H]-
633.4865Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
615.4759Neutral loss of sn1 RCOOH group and serine from [M-H]-
549.5616sn1 RCOO- ion
479.4834sn2 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