RefMet Compound Details

Created with Raphaƫl 2.1.0OHOHNHO
RefMet ID, RefMet name, exact mass and formula
RefMet IDRM0135491
RefMet nameCer 18:1;O2/2:0
Alternative nameCer(d18:1/2:0)
Systematic nameN-(acetyl)-sphing-4-enine
SynonymsPubChem Synonyms
Sum CompositionCer 20:1;O2 View other entries in RefMet with this sum composition
Exact mass341.292994 (neutral)
Calculate m/z:   
View other RefMet entries with this exact (neutral) mass:   +/- 0.05 amu   +/- 0.1 amu   +/- 0.2 amu   +/- 0.5 amu
FormulaC20H39NO3View other entries in RefMet with this formula
Molecular descriptors
Molfile30574 (Download molfile/View MW Metabolite Database details)
InChIInChI=1S/C20H39NO3/c1-3-4-5-6-7-8-9-10-11-12-13-14-15-16-20(24)19(17-22)21-18(2)23/h15-16,19-20,22,24H,3-14,17H2,1-2H3,(H,21,23)/b
16-15+/t19-,20+/m0/s1
InChIKeyBLTCBVOJNNKFKC-QUDYQQOWSA-NView other enantiomers/diastereomers of this metabolite in RefMet
SMILESCCCCCCCCCCCCC/C=C/[C@H]([C@H](CO)NC(=O)C)O
Run Tanimoto similarity search (with similarity coefficient >=0.6)
Chemical/Biochemical Classification
Super ClassSphingolipids
Main ClassCeramides
Sub ClassCer (Ceramides)
Distribution of Cer 18:1;O2/2:0 in NMDR studies
SpeciesPlot Species distribution
Sample sourcePlot Sample source(tissue) distribution
PlatformPlatform (MS/NMR) used for detection
ChromatographyChromatography methods used for detection
StudiesNMDR Studies reporting Cer 18:1;O2/2:0
External Links
Pubchem CID5497136
LIPID MAPSLMSP02010014
ChEBI ID46979
KEGG IDC00422
Structural annotation level
Annotation level1   (1:Known structure; 2:Known regiochemistry; 3:Partial structure; 4:Sum-composition)

Table of KEGG reactions in human pathways involving Cer 18:1;O2/2:0

Rxn IDKEGG ReactionEnzyme
R01350 Glycerol + Fatty acid <=> TriacylglycerolGlycerol acylhydrolase
R02250 Triacylglycerol + H2O <=> 1,2-Diacyl-sn-glycerol + Fatty acidtriacylglycerol acylhydrolase
R02251 Triacylglycerol + CoA <=> 1,2-Diacyl-sn-glycerol + Acyl-CoAacyl-CoA:1,2-diacyl-sn-glycerol O-acyltransferase
R05333 Phospholipid + 1,2-Diacyl-sn-glycerol <=> Lysophospholipid + TriacylglycerolPhospholipid:1,2-diacyl-sn-glycerol O-acyltransferase

Table of KEGG human pathways containing Cer 18:1;O2/2:0

Pathway IDHuman Pathway# of reactions
hsa00561 Glycerolipid metabolism 3
hsa01100 Metabolic pathways 1
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