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Record Information
Version2.0
Created at2022-05-11 18:51:36 UTC
Updated at2022-05-11 18:51:36 UTC
NP-MRD IDNP0091904
Secondary Accession NumbersNone
Natural Product Identification
Common NameSM(d18:0/20:0)
DescriptionSM(d18:0/20:0), Also known as sphingomyelin, belongs to the class of organic compounds known as phosphosphingolipids. These are sphingolipids with a structure based on a sphingoid base that is attached to a phosphate head group. They differ from phosphonospingolipids which have a phosphonate head group. Thus, SM(D18:0/20:0) Is considered to be a phosphosphingolipid lipid molecule. Sphingomyelins are synthesized by the transfer of phosphorylcholine from phosphatidylcholine to a ceramide in a reaction catalyzed by SM(d18:0/20:0) Synthase. However, there is some evidence that there may also be a SM(d18:0/20:0) Pool in the inner leaflet of the membrane. In humans, SM(d18:0/20:0) Is the only membrane phospholipid not derived from glycerol. Moreover, neutral sphingomyelinase-2 - an enzyme that breaks down SM(d18:0/20:0) Into ceramide has been found to localise exclusively to the inner leaflet further suggesting that there may be SM(d18:0/20:0) Present there. SM(d18:0/20:0) Is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. In addition it contains one polar head group, which is either phosphocholine or phosphoethanolamine. SM(d18:0/20:0) was first documented in 1994 (PMID: 8106344). SM(d18:0/20:0) (D18:0/20:0) Or SM(d18:0/20:0) Is a type of sphingolipid found in animal cell membranes, especially in the membranous myelin sheath which surrounds some nerve cell axons (PMID: 9034165).
Structure
Thumb
Synonyms
ValueSource
N-(Eicosanoyl)-sphinganine-1-phosphocholineHMDB
SphingomyelinHMDB
Sphingomyelin (D18:0/20:0)HMDB
N-(Eicosanoyl)-1-phosphocholine-sphinganineHMDB
Sphingomyelin(D18:0/20:0)HMDB
N-(Eicosanoyl)-1-phosphocholine-dihydrosphingosineHMDB
N-(Eicosanoyl)-1-phosphocholine-D-erythro-sphinganineHMDB
Chemical FormulaC43H89N2O6P
Average Mass761.1503 Da
Monoisotopic Mass760.64583 Da
IUPAC Name(2-{[(2S,3R)-3-hydroxy-2-icosanamidooctadecyl phosphonato]oxy}ethyl)trimethylazanium
Traditional NameC20DH sphingomyelin
CAS Registry NumberNot Available
SMILES
CCCCCCCCCCCCCCCCCCCC(=O)N[C@@H](COP([O-])(=O)OCC[N+](C)(C)C)[C@H](O)CCCCCCCCCCCCCCC
InChI Identifier
InChI=1S/C43H89N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-25-27-29-31-33-35-37-43(47)44-41(40-51-52(48,49)50-39-38-45(3,4)5)42(46)36-34-32-30-28-26-24-19-17-15-13-11-9-7-2/h41-42,46H,6-40H2,1-5H3,(H-,44,47,48,49)/t41-,42+/m0/s1
InChI KeyUGRZESKDAPEULH-ACEXITHZSA-N
Experimental Spectra
Not Available
Predicted Spectra
Chemical Shift Submissions
Not Available
Species
Species of Origin
Chemical Taxonomy
Description Belongs to the class of organic compounds known as phosphosphingolipids. These are sphingolipids with a structure based on a sphingoid base that is attached to a phosphate head group. They differ from phosphonospingolipids which have a phosphonate head group.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSphingolipids
Sub ClassPhosphosphingolipids
Direct ParentPhosphosphingolipids
Alternative Parents
Substituents
  • Sphingoid-1-phosphate or derivatives
  • Phosphocholine
  • Phosphoethanolamine
  • Dialkyl phosphate
  • Fatty amide
  • N-acyl-amine
  • Organic phosphoric acid derivative
  • Phosphoric acid ester
  • Fatty acyl
  • Alkyl phosphate
  • Tetraalkylammonium salt
  • Quaternary ammonium salt
  • Secondary carboxylic acid amide
  • Secondary alcohol
  • Carboxamide group
  • Carboxylic acid derivative
  • Organic zwitterion
  • Alcohol
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Carbonyl group
  • Amine
  • Organic salt
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP5.74ALOGPS
logP10.05ChemAxon
logS-7.5ALOGPS
pKa (Strongest Acidic)1.87ChemAxon
pKa (Strongest Basic)0.025ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area107.92 ŲChemAxon
Rotatable Bond Count41ChemAxon
Refractivity231.38 m³·mol⁻¹ChemAxon
Polarizability98.38 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0012090
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB028757
KNApSAcK IDNot Available
Chemspider ID24846879
KEGG Compound IDC00550
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound44260131
PDB IDNot Available
ChEBI ID17636
Good Scents IDNot Available
References
General References
  1. Ghosh S, Strum JC, Bell RM: Lipid biochemistry: functions of glycerolipids and sphingolipids in cellular signaling. FASEB J. 1997 Jan;11(1):45-50. [PubMed:9034165 ]
  2. Hannun YA: The sphingomyelin cycle and the second messenger function of ceramide. J Biol Chem. 1994 Feb 4;269(5):3125-8. [PubMed:8106344 ]