. Author manuscript; available in PMC: 2010 Sep 15.

Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2009 Feb 21;877(26):2673–2695. doi: 10.1016/j.jchromb.2009.02.033

Table 2.

Head group-related ions observed in the product-ion spectra of the [M − H + 2Li]⁺ ions

Phospholipid	Head group (YH)	g	f
GPEtn		[M + 2Li -H - 43]⁺	[M + 2Li -H - 129]⁺
GPSer		[M + 2Li -H - 87]⁺	-
GPGro		[M + 2Li -H - 74]⁺	[M + 2Li -H - 160]⁺
GPIns		[M + 2Li -H - 162]⁺	[M + 2Li -H - 248]⁺
GPA	H	[M + 2Li -H]⁺	[M + 2Li -H - 86]⁺