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Record Information
Version2.0
Created at2022-05-11 18:58:41 UTC
Updated at2022-05-11 18:58:41 UTC
NP-MRD IDNP0092150
Secondary Accession NumbersNone
Natural Product Identification
Common Nameall-trans-5,6-Epoxyretinoic acid
DescriptionAll-trans-5,6-Epoxyretinoic acid, also known as 5,6-epoxy-5,6-dihydro-retinoic acid or 5,6-epoxyretinoic acid, sodium salt, belongs to the class of organic compounds known as retinoids. These are oxygenated derivatives of 3,7-dimethyl-1-(2,6,6-trimethylcyclohex-1-enyl)nona-1,3,5,7-tetraene and derivatives thereof. All-trans-5,6-Epoxyretinoic acid is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. All-trans-5,6-epoxyretinoic acid can be biosynthesized from all-trans-retinoic acid; which is mediated by the enzyme cytochrome P450. A retinoid obtained by epoxidation across the 5,6-double bond of retinoic acid. all-trans-5,6-Epoxyretinoic acid was first documented in 1978 (PMID: 275830). In humans, all-trans-5,6-epoxyretinoic acid is involved in retinol metabolism (PMID: 12703967) (PMID: 15606149) (PMID: 1859380) (PMID: 4091803).
Structure
Thumb
Synonyms
ValueSource
all-trans-5,6-Epoxy-5,6-dihydroretinoic acidChEBI
all-trans-5,6-Epoxy-5,6-dihydroretinoateGenerator
all-trans-5,6-EpoxyretinoateGenerator
5,6-Epoxy-5,6-dihydro-retinoateHMDB
5,6-Epoxy-5,6-dihydro-retinoic acidHMDB
5,6-Epoxyretinoic acid, (13-cis)-isomerHMDB
5,6-Epoxyretinoic acid, sodium saltHMDB
5,6-Epoxyretinoic acidHMDB
5,6-Epoxy-5,6-dihydroretinoic acidHMDB
5,6-Epoxy-atraHMDB
all-trans-5,6-Epoxyretinoic acidHMDB
Chemical FormulaC20H28O3
Average Mass316.4345 Da
Monoisotopic Mass316.20384 Da
IUPAC Name(2E,4E,6E,8E)-3,7-dimethyl-9-{2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-1-yl}nona-2,4,6,8-tetraenoic acid
Traditional Name(2E,4E,6E,8E)-3,7-dimethyl-9-{2,2,6-trimethyl-7-oxabicyclo[4.1.0]heptan-1-yl}nona-2,4,6,8-tetraenoic acid
CAS Registry NumberNot Available
SMILES
C\C(\C=C\C12OC1(C)CCCC2(C)C)=C/C=C/C(/C)=C/C(O)=O
InChI Identifier
InChI=1S/C20H28O3/c1-15(8-6-9-16(2)14-17(21)22)10-13-20-18(3,4)11-7-12-19(20,5)23-20/h6,8-10,13-14H,7,11-12H2,1-5H3,(H,21,22)/b9-6+,13-10+,15-8+,16-14+
InChI KeyKEEHJLBAOLGBJZ-WEDZBJJJSA-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 retinoids. These are oxygenated derivatives of 3,7-dimethyl-1-(2,6,6-trimethylcyclohex-1-enyl)nona-1,3,5,7-tetraene and derivatives thereof.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassPrenol lipids
Sub ClassRetinoids
Direct ParentRetinoids
Alternative Parents
Substituents
  • Retinoic acid
  • Diterpenoid
  • Retinoid skeleton
  • Medium-chain fatty acid
  • Branched fatty acid
  • Epoxy fatty acid
  • Heterocyclic fatty acid
  • Oxepane
  • Methyl-branched fatty acid
  • Unsaturated fatty acid
  • Fatty acyl
  • Fatty acid
  • Carboxylic acid derivative
  • Organoheterocyclic compound
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Ether
  • Oxacycle
  • Oxirane
  • Dialkyl ether
  • Hydrocarbon derivative
  • Organic oxygen compound
  • Carbonyl group
  • Organooxygen compound
  • Organic oxide
  • Aliphatic heteropolycyclic compound
Molecular FrameworkAliphatic heteropolycyclic 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
logP4.54ChemAxon
logS-4.9ALOGPS
pKa (Strongest Acidic)4.94ChemAxon
pKa (Strongest Basic)-4.3ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area49.83 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity96.52 m³·mol⁻¹ChemAxon
Polarizability37.19 ųChemAxon
Number of Rings2ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0012451
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB029067
KNApSAcK IDNot Available
Chemspider ID4515523
KEGG Compound IDC16680
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound5363137
PDB IDNot Available
ChEBI ID80658
Good Scents IDNot Available
References
General References
  1. Panzella L, Manini P, Crescenzi O, Napolitano A, d'Ischia M: Nitrite-induced nitration pathways of retinoic acid, 5,6-epoxyretinoic acid, and their esters under mildly acidic conditions: toward a reappraisal of retinoids as scavengers of reactive nitrogen species. Chem Res Toxicol. 2003 Apr;16(4):502-11. doi: 10.1021/tx0256836. [PubMed:12703967 ]
  2. Panzella L, Manini P, Napolitano A, d'Ischia M: Free radical oxidation of (E)-retinoic acid by the Fenton reagent: competing epoxidation and oxidative breakdown pathways and novel products of 5,6-epoxyretinoic acid transformation. Chem Res Toxicol. 2004 Dec;17(12):1716-24. doi: 10.1021/tx049794b. [PubMed:15606149 ]
  3. Barua AB, Gunning DB, Olson JA: Metabolism in vivo of all-trans-[11-3H]retinoic acid after an oral dose in rats. Characterization of retinoyl beta-glucuronide in the blood and other tissues. Biochem J. 1991 Jul 15;277 ( Pt 2)(Pt 2):527-31. doi: 10.1042/bj2770527. [PubMed:1859380 ]
  4. Napoli JL, McCormick AM, Schnoes HK, DeLuca HF: Identification of 5,8-oxyretinoic acid isolated from small intestine of vitamin A-deficient rats dosed with retinoic acid. Proc Natl Acad Sci U S A. 1978 Jun;75(6):2603-5. doi: 10.1073/pnas.75.6.2603. [PubMed:275830 ]
  5. Iwahashi H, Ikeda A, Kido R: Haemoglobin-catalysed retinoic acid 5,6-epoxidation. Biochem J. 1985 Dec 1;232(2):459-66. doi: 10.1042/bj2320459. [PubMed:4091803 ]