Commonly occurring product ions for PS(17:0/4:1(3E)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
578.3100Precursor ion [M-H]-
491.2779Loss of serine from precursor ion
423.2517Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
405.2412Neutral loss of sn2 RCOOH group and serine from [M-H]-
269.2486sn1 RCOO- ion
239.0326Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
221.0221Neutral loss of sn1 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