Commonly occurring product ions for PS(16:0/4:1(3E)) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
564.2943Precursor ion [M-H]-
477.2623Loss of serine from precursor ion
409.2361Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
391.2255Neutral loss of sn2 RCOOH group and serine from [M-H]-
255.2330sn1 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