RefMet Compound Details

RefMet ID, RefMet name, exact mass and formula
RefMet ID	RM0030383
RefMet name	Cer 21:1;O2/18:0
Alternative name	Cer(d21:1/18:0)
Systematic name	N-(octadecanoyl)-4E-heneicosasphingenine
Synonyms	PubChem Synonyms
Sum Composition	Cer 39:1;O2	View other entries in RefMet with this sum composition
Exact mass	607.590344 (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	C39H77NO3	View other entries in RefMet with this formula
Molecular descriptors
Molfile	87645 (Download molfile/View MW Metabolite Database details)
InChI	InChI=1S/C39H77NO3/c1-3-5-7-9-11-13-15-17-19-21-22-24-26-28-30-32-34-38(42)37(36-41)40-39(43)35-33-31-29-27-25-23-20-18-16-14-12-1 0-8-6-4-2/h32,34,37-38,41-42H,3-31,33,35-36H2,1-2H3,(H,40,43)/b34-32+/t37-,38+/m0/s1
InChIKey	MJVLDYPEXBRIPY-PQPBPFPMSA-N	View other enantiomers/diastereomers of this metabolite in RefMet
SMILES	CCCCCCCCCCCCCCCC/C=C/[C@H]([C@H](CO)NC(=O)CCCCCCCCCCCCCCCCC)O Run Tanimoto similarity search (with similarity coefficient >=0.6)
Chemical/Biochemical Classification
Super Class	Sphingolipids
Main Class	Ceramides
Sub Class	Cer (Ceramides)
Distribution of Cer 21:1;O2/18:0 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 21:1;O2/18:0
External Links
Pubchem CID	134749721
LIPID MAPS	LMSP02019CA5
KEGG ID	C00422
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 21:1;O2/18:0

Rxn ID	KEGG Reaction	Enzyme
R01350	Glycerol + Fatty acid <=> Triacylglycerol	Glycerol acylhydrolase
R02250	Triacylglycerol + H2O <=> 1,2-Diacyl-sn-glycerol + Fatty acid	triacylglycerol acylhydrolase
R02251	Triacylglycerol + CoA <=> 1,2-Diacyl-sn-glycerol + Acyl-CoA	acyl-CoA:1,2-diacyl-sn-glycerol O-acyltransferase
R05333	Phospholipid + 1,2-Diacyl-sn-glycerol <=> Lysophospholipid + Triacylglycerol	Phospholipid:1,2-diacyl-sn-glycerol O-acyltransferase

Table of KEGG human pathways containing Cer 21:1;O2/18:0

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