RefMet Compound Details

RefMet ID, RefMet name, exact mass and formula
RefMet ID	RM0135509
RefMet name	Cer 18:0;O2/22:0
Alternative name	Cer(d18:0/22:0)
Systematic name	N-(docosanoyl)-sphinganine
Synonyms	PubChem Synonyms
Sum Composition	Cer 40:0;O2	View other entries in RefMet with this sum composition
Exact mass	623.621644 (neutral)	Calculate m/z: (Choose adduct) [M+H]+ [M+H-H2O]+ [M.]+ [M+2H]2+ [M+3H]3+ [M+4H]4+ [M+K]+ [M+2K]2+ [M+2K-H]+ [M+Na]+ [M+2Na]2+ [M+2Na-H]+ [M+Li]+ [M+2Li]2+ [M+NH4]+ [M.CH3]+ [M+Ag]+ [M+H+CH3OH]+ [M+H+CH3CN]+ [M+H+2CH3CN]+ [M+Na+CH3CN]+ [M.NaFormate+H]+ [M.NH4Formate+H]+ [M.TMSi]+ [M.tBuDMSi]+ [M+H-Hexose]+ [M+H-EtnP]+ [M+H-SerP]+ [M-H]- [M-H-H2O]- [M-CH3]- [M-2H]2- [M-3H]3- [M-4H]4- [M+Cl]- [M+OAc]- [M+Na-2H]- [M+K-2H]- [M.Formate]- [M.NaFormate-H]- [M.NH4Formate-H]- [M.F]- [M-H-Ser]- [M.HF2]- M(neutral)    View other RefMet entries with this exact (neutral) mass:   +/- 0.05 amu   +/- 0.1 amu   +/- 0.2 amu   +/- 0.5 amu
Formula	C40H81NO3	View other entries in RefMet with this formula
Molecular descriptors
Molfile	30656 (Download molfile/View MW Metabolite Database details)
InChI	InChI=1S/C40H81NO3/c1-3-5-7-9-11-13-15-17-18-19-20-21-22-24-26-28-30-32-34-36-40(44)41-38(37-42)39(43)35-33-31-29-27-25-23-16-14-1 2-10-8-6-4-2/h38-39,42-43H,3-37H2,1-2H3,(H,41,44)/t38-,39+/m0/s1
InChIKey	SXPRAKSDHOEHIG-ZESVVUHVSA-N	View other enantiomers/diastereomers of this metabolite in RefMet
SMILES	CCCCCCCCCCCCCCCCCCCCCC(=O)N[C@@H](CO)[C@@H](CCCCCCCCCCCCCCC)O Run Tanimoto similarity search (with similarity coefficient >=0.6)
Chemical/Biochemical Classification
Super Class	Sphingolipids
Main Class	Ceramides
Sub Class	DHCer (Dihydroceramides)
Distribution of Cer 18:0;O2/22:0 in NMDR studies
Species	Plot Species distribution
Sample source	Plot Sample source(tissue) distribution
Platform	Platform (MS/NMR) used for detection
Chromatography	Chromatography methods used for detection
Studies	NMDR Studies reporting Cer 18:0;O2/22:0
External Links
Pubchem CID	5283575
LIPID MAPS	LMSP02020010
ChEBI ID	67021
KEGG ID	C12126
HMDB ID	HMDB0011765
Chemspider ID	4446688
Structural annotation level
Annotation level	1   (1:Known structure; 2:Known regiochemistry; 3:Partial structure; 4:Sum-composition)

Table of KEGG reactions in human pathways involving Cer 18:0;O2/22:0

Rxn ID	KEGG Reaction	Enzyme
R06517	Acyl-CoA + Sphinganine <=> CoA + Dihydroceramide	acyl-CoA:sphingosine N-acyltransferase
R06518	Dihydroceramide + H2O <=> Fatty acid + Sphinganine	N-acylsphingosine amidohydrolase
R06519	Dihydroceramide + 2 Ferrocytochrome b5 + Oxygen + 2 H+ <=> N-Acylsphingosine + 2 Ferricytochrome b5 + 2 H2O	dihydroceramide,ferrocytochrome b5:oxygen oxidoreductase (4,5-dehydrogenating)
R06526	Dihydroceramide + 2 Ferrocytochrome b5 + Oxygen + 2 H+ <=> Phytoceramide + 2 Ferricytochrome b5 + H2O	dihydroceramide,ferrocytochrome b5:oxygen oxidoreductase (C4-hydroxylating)

Table of KEGG human pathways containing Cer 18:0;O2/22:0

Pathway ID	Human Pathway	# of reactions
hsa00600	Sphingolipid metabolism	4