Record Information
Creation date2011-09-21 00:31:22 UTC
Update date2017-03-11 23:00:28 UTC
Primary IDFDB023542
Secondary Accession NumbersNot Available
Chemical Information
FooDB NameCeramide (d18:1/26:0)
DescriptionCer(d18:1/26:0), also known as N-hexacosanoyl-sphing-4-enine, is a ceramide (Cer). Ceramides are members of the class of compounds known as sphingolipids (SPs), or glycosylceramides. SPs are lipids containing a backbone of sphingoid bases (e.g. sphingosine or sphinganine) that are often covalently bound to a fatty acid derivative through N-acylation. SPs are found in cell membranes, particularly in peripheral nerve cells and the cells found in the central nervous system (including the brain and spinal cord). Sphingolipids are extremely versatile molecules that have functions controlling fundamental cellular processes such as cell division, differentiation, and cell death. Impairments associated with sphingolipid metabolism are associated with many common human diseases such as diabetes, various cancers, microbial infections, diseases of the cardiovascular and respiratory systems, Alzheimer’s disease and other neurological syndromes. The biosynthesis and catabolism of sphingolipids involves a large number of intermediate metabolites where many different enzymes are involved. Simple sphingolipids, which include the sphingoid bases and ceramides, make up the early products of the sphingolipid synthetic pathways, while complex sphingolipids may be formed by the addition of head groups to the ceramide template (Wikipedia). In humans, ceramides are phosphorylated to ceramide phosphates (CerPs) through the action of a specific ceramide kinase (CerK). Ceramide phosphates are important metabolites of ceramides as they act as a mediators of the inflammatory response. Ceramides are also one of the hydrolysis byproducts of sphingomyelins (SMs) through the action of the enzyme sphingomyelin phosphodiesterase, which has been identified in the subcellular fractions of human epidermis (PMID: 25935) and many other tissues. Ceramides can also be synthesized from serine and palmitate in a de novo pathway and are regarded as important cellular signals for inducing apoptosis (PMID: 14998372). Ceramides are key in the biosynthesis of glycosphingolipids and gangliosides. In terms of its appearance and structure, Cer(d18:1/26:0) is a colorless solid that consists of an unsaturated 18-carbon sphingoid base with an attached saturated hexacosanoyl fatty acid side chain. In most mammalian SPs, the 18-carbon sphingoid bases are predominant (PMID: 9759481).
CAS Number104404-17-3
C26 CerChEBI
Ceramide (D18:1/26:0)HMDB
Predicted Properties
Water Solubility2.1e-05 g/LALOGPS
pKa (Strongest Acidic)13.62ChemAxon
pKa (Strongest Basic)0.02ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area69.56 ŲChemAxon
Rotatable Bond Count40ChemAxon
Refractivity211.79 m³·mol⁻¹ChemAxon
Polarizability94.6 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC44H87NO3
IUPAC nameN-[(2S,3R,4E)-1,3-dihydroxyoctadec-4-en-2-yl]hexacosanamide
InChI IdentifierInChI=1S/C44H87NO3/c1-3-5-7-9-11-13-15-17-18-19-20-21-22-23-24-25-26-28-30-32-34-36-38-40-44(48)45-42(41-46)43(47)39-37-35-33-31-29-27-16-14-12-10-8-6-4-2/h37,39,42-43,46-47H,3-36,38,40-41H2,1-2H3,(H,45,48)/b39-37+/t42-,43+/m0/s1
Average Molecular Weight678.1665
Monoisotopic Molecular Weight677.668595655
Description Belongs to the class of organic compounds known as ceramides. These are lipid molecules containing a sphingosine in which the amine group is linked to a fatty acid.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
Sub ClassCeramides
Direct ParentCeramides
Alternative Parents
  • Ceramide
  • Fatty amide
  • N-acyl-amine
  • Fatty acyl
  • Carboxamide group
  • Secondary alcohol
  • Secondary carboxylic acid amide
  • Carboxylic acid derivative
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Alcohol
  • Organic nitrogen compound
  • Carbonyl group
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Physiological effect

Health effect:

Organoleptic effect:


Route of exposure:


Biological location:


Naturally occurring process:


Industrial application:

Biological role:

Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
Physical stateSolid
Physical DescriptionNot Available
Mass CompositionNot Available
Melting PointNot Available
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
TypeDescriptionSplash KeyView
Predicted GC-MSCeramide (d18:1/26:0), TMS_1_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TMS_1_2, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TMS_1_3, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TMS_2_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TMS_2_2, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TMS_2_3, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TBDMS_1_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TBDMS_1_2, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSCeramide (d18:1/26:0), TBDMS_1_3, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
TypeDescriptionSplash KeyView
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-004i-0000009000-fc12ec7f373bc36fecac2017-10-04View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-01t9-0050009000-d7f4ac7869d9a81bad7d2017-10-04View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-03e9-0090006000-71ee599024cabab4acfa2017-10-04View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-004i-0000009000-43e8b87ae8fa46301afa2021-09-21View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-01t9-0050009000-1a4d3a44ae60d8fbe1af2021-09-21View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-03e9-0090006000-be9ad25efee6e2eb7acd2021-09-21View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-0000009000-db0e7db2b458c26e0c5f2021-09-23View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-0000009000-db0e7db2b458c26e0c5f2021-09-23View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014i-0000009000-3eacb775e96413fc24952021-09-23View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-004i-0000009000-ce52ccd5949c4f7977aa2021-09-25View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-004i-0010009000-804b0d55a7076709aa862021-09-25View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004o-0022009000-7e3a5ca47cc429f981c72021-09-25View Spectrum
NMRNot Available
ChemSpider ID4446683
ChEMBL IDNot Available
KEGG Compound IDC00195
Pubchem Compound ID5283570
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer IDNot Available
DrugBank IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDNot Available
EAFUS IDNot Available
Dr. Duke IDNot Available
BIGG IDNot Available
KNApSAcK IDNot Available
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDNot Available
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Biological Effects and Interactions
Health Effects / BioactivitiesNot Available
NameGene NameUniProt ID
Lactase-phlorizin hydrolaseLCTP09848
Acid ceramidaseASAH1Q13510
Putative neutral ceramidase CASAH2CP0C7U2
Alkaline ceramidase 2ACER2Q5QJU3
Neutral ceramidaseASAH2Q9NR71
Alkaline ceramidase 1ACER1Q8TDN7
Phosphatidylcholine:ceramide cholinephosphotransferase 2SGMS2Q8NHU3
Phosphatidylcholine:ceramide cholinephosphotransferase 1SGMS1Q86VZ5
Ganglioside GM2 activatorGM2AP17900
Sphingosine-1-phosphate lyase 1SGPL1O95470
N-acetylglucosaminyl-phosphatidylinositol de-N-acetylasePIGLQ9Y2B2
Sphingomyelin phosphodiesteraseSMPD1P17405
Ceramide glucosyltransferaseUGCGQ16739
Phosphatidylinositol N-acetylglucosaminyltransferase subunit QPIGQQ9BRB3
Phosphatidylinositol N-acetylglucosaminyltransferase subunit APIGAP37287
Phosphatidylinositol N-acetylglucosaminyltransferase subunit HPIGHQ14442
Phosphatidylinositol N-acetylglucosaminyltransferase subunit PPIGPP57054
Phosphatidylinositol N-acetylglucosaminyltransferase subunit CPIGCQ92535
2-hydroxyacylsphingosine 1-beta-galactosyltransferaseUGT8Q16880
Collagen type IV alpha-3-binding proteinCOL4A3BPQ9Y5P4
T-cell surface glycoprotein CD1e, membrane-associatedCD1EP15812
Epididymal secretory protein E1NPC2P61916
Ceramide synthase 1CERS1P27544
Antigen-presenting glycoprotein CD1dCD1DP15813
GPI mannosyltransferase 1PIGMQ9H3S5
Phosphatidylinositol-glycan biosynthesis class W proteinPIGWQ7Z7B1
Phosphatidylinositol-glycan biosynthesis class X proteinPIGXQ8TBF5
GPI mannosyltransferase 4PIGZQ86VD9
Lactosylceramide 1,3-N-acetyl-beta-D-glucosaminyltransferaseB3GNT5Q9BYG0
Beta-1,3-galactosyltransferase 5B3GALT5Q9Y2C3
GPI mannosyltransferase 3PIGBQ92521
Phosphatidylinositol-glycan biosynthesis class F proteinPIGFQ07326
GPI ethanolamine phosphate transferase 2PIGGQ5H8A4
GPI ethanolamine phosphate transferase 1PIGNO95427
GPI ethanolamine phosphate transferase 3PIGOQ8TEQ8
GPI transamidase component PIG-SPIGSQ96S52
GPI transamidase component PIG-TPIGTQ969N2
Phosphatidylinositol glycan anchor biosynthesis class U proteinPIGUQ9H490
GPI mannosyltransferase 2PIGVQ9NUD9
Phosphatidylinositol N-acetylglucosaminyltransferase subunit YPIGYQ3MUY2
Non-lysosomal glucosylceramidaseGBA2Q9HCG7
Protein FANNSMAFQ92636
GPI-anchor transamidasePIGKQ92643
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference