Commonly occurring product ions for DG(20:4(5E,8E,11E,14E)/12:0/0:0)

m/z	Ion Description
561.4513	Precursor ion [M+H]+
560.4441	Precursor ion [M+NH4]+
543.4408	Precursor ion [M+H]+ with loss of H2O
361.2737	Neutral loss of sn2 RCOOH + NH3 from [M+NH4]+
343.2631	sn1 acyl chain ([RC=O +74]+ with loss of H2O)
287.2369	sn1 acyl chain ([RC=O]+)
269.2264	sn1 acyl chain ([RC=O]+ with loss of H2O)
257.2111	Neutral loss of sn1 RCOOH + NH3 from [M+NH4]+
239.2006	sn2 acyl chain ([RC=O +74]+ with loss of H2O)
183.1743	sn2 acyl chain ([RC=O]+)
165.1638	sn2 acyl chain ([RC=O]+ with loss of H2O)