RefMet Compound Details

MW structure	30694 (View MW Metabolite Database details)
RefMet name	Cer 18:0;O3/22:0
Alternative name	Cer(t18:0/22:0)
Systematic name	N-(docosanoyl)-4R-hydroxysphinganine
SMILES	CCCCCCCCCCCCCCCCCCCCCC(=O)N[C@@H](CO)[C@@H]([C@@H](CCCCCCCCCCCCCC)O)O   Run Tanimoto similarity search (with similarity coefficient >=0.6)
Sum Composition	Cer 40:0;O3	View other entries in RefMet with this sum composition
Exact mass	639.616559 (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	C40H81NO4	View other entries in RefMet with this formula
InChI	InChI=1S/C40H81NO4/c1-3-5-7-9-11-13-15-17-18-19-20-21-22-23-25-27-29-31-33-35-39(44)41-37(36-42)40(45)38(43)34-32-30-28-26-24-16-1 4-12-10-8-6-4-2/h37-38,40,42-43,45H,3-36H2,1-2H3,(H,41,44)/t37-,38+,40-/m0/s1
InChIKey	CIMNZQFRNXDRER-HIERITDVSA-N	View other enantiomers/diastereomers of this metabolite in RefMet
Super Class	Sphingolipids
Main Class	Ceramides
Sub Class	PhytoCer (Phytoceramides)
Pubchem CID	5322153
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;O3/22:0

Rxn ID	KEGG Reaction	Enzyme
R08969	N-Acylsphingosine + Phosphatidylcholine <=> Sphingomyelin + 1,2-Diacyl-sn-glycerol	ceramide:phosphatidylcholine cholinephosphotransferase
R01500	UDP-alpha-D-galactose + N-Acylsphingosine <=> UDP + Galactosylceramide	UDP-alpha-D-galactose:N-acylsphingosine D-galactosyltransferase
R03617	Galactosylceramide + H2O <=> D-Galactose + N-Acylsphingosine	D-galactosyl-N-acylsphingosine galactohydrolase
R06522	Ceramide 1-phosphate + H2O <=> N-Acylsphingosine + Orthophosphate	3-sn-phosphatidate phosphohydrolase
R01495	ATP + N-Acylsphingosine <=> ADP + Ceramide 1-phosphate	ATP:ceramide 1-phosphotransferase
R06519	Dihydroceramide + 2 Ferrocytochrome b5 + Oxygen + 2 H+ <=> N-Acylsphingosine + 2 Ferricytochrome b5 + 2 H2O	dihydroceramide,ferrocytochrome b5:oxygen oxidoreductase (4,5-dehydrogenating)
R01891	CDP-choline + N-Acylsphingosine <=> CMP + Sphingomyelin	CDP-choline:N-acylsphingosine cholinephosphotransferase
R01497	UDP-glucose + N-Acylsphingosine <=> UDP + Glucosylceramide	UDP-glucose:N-acylsphingosine D-glucosyltransferase
R01494	N-Acylsphingosine + H2O <=> Fatty acid + Sphingosine	N-Acylsphingosine amidohydrolase
R01496	Acyl-CoA + Sphingosine <=> CoA + N-Acylsphingosine	acyl-CoA:sphingosine N-acyltransferase
R01498	Glucosylceramide + H2O <=> D-Glucose + N-Acylsphingosine	D-Glucosyl-N-acylsphingosine glucohydrolase
R02541	Sphingomyelin + H2O <=> N-Acylsphingosine + Choline phosphate	Sphingomyelin cholinephosphohydrolase

Table of KEGG human pathways containing Cer 18:0;O3/22:0

Pathway ID	Human Pathway	# of reactions
hsa00600	Sphingolipid metabolism	11
hsa01100	Metabolic pathways	1