ceramide CHEBI:7242 PMID:7542630 ceramides Wikipedia:Ceramide CHEBI:17761 LIPID_MAPS_class:LMSP02 Ceramide Ceramides (N-acyl-sphingoid bases) are a major subclass of sphingoid base derivatives with an amide-linked fatty acid. The fatty acids are typically saturated or monounsaturated with chain lengths from 14 to 26 carbon atoms; the presence of a hydroxyl group on carbon 2 is fairly common. Ceramides are generally precursors of more complex sphingolipids. In the illustrated generalised structure, R(1) = OH, OX (where X = acyl, glycosyl, phosphate, phosphonate, etc.), or H. C4H6NO2R3 KEGG:C00195 CHEBI:23074 Cer N-acylated sphingoid chebi_ontology a ceramide CHEBI:13954 100.09590 CHEBI:12487 0 100.03985 O[C@H]([*])[C@H](C[*])NC([*])=O lipid