Commonly occurring product ions for PS(18:1(9Z)/20:1(11Z))) (View full structure)

m/zIon DescriptionStructure (click to enlarge)
814.5604Precursor ion [M-H]-
727.5283Loss of serine from precursor ion
463.2830Loss of sn1 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
445.2725Neutral loss of sn1 RCOOH group and serine from [M-H]-
435.2517Loss of sn2 acyl chain as ketene (RCH=C=O) and serine from [M-H]-
417.2412Neutral loss of sn2 RCOOH group and serine from [M-H]-
309.2799sn2 RCOO- ion
281.2486sn1 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