. Author manuscript; available in PMC: 2017 May 1.

Published in final edited form as: Expert Rev Proteomics. 2016 May;13(5):451–456. doi: 10.1080/14789450.2016.1177462

Table 1.

Twelve subclasses of ceramide in human SC. (Modified from Janessens et. al, 2012, J. Lipid Res)

Fatty acids	Non-hydroxy fatty acid [N]	α-hydroxy fatty acid [A]	Esterified ω-hydroxy fatty acid [EO]
Sphingoid bases	Non-hydroxy fatty acid [N]	α-hydroxy fatty acid [A]	Esterified ω-hydroxy fatty acid [EO]
Dihydrosphingosine [dS]	[NDS]	[Ads]	[EOdS]
Sphingosine [S]	[NS]	[AS]	[EOS]
Phytosphingosine [P]	[NP]	[AP]	[EOP]
6-hydroxy sphingosine [H]	[NH]	[AH]	[EOH]