Record Information
Version1.0
Creation Date2016-09-30 22:29:12 UTC
Update Date2020-04-22 15:03:08 UTC
BMDB IDBMDB0000356
Secondary Accession Numbers
  • BMDB00356
Metabolite Identification
Common Name17-Epiestriol
Description17-Epiestriol, also known as 16a,17a-estriol, belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane. 17-Epiestriol is an extremely weak basic (essentially neutral) compound (based on its pKa).
Structure
Thumb
Synonyms
ValueSource
16a,17a-EstriolHMDB
16a-Hydroxy-17a-estradiolHMDB
17-Epi-estriolHMDB
17a-EstriolHMDB
Estra-1,3,5(10)-triene-3,16a,17a-triolHMDB
Chemical FormulaC18H24O3
Average Molecular Weight288.3814
Monoisotopic Molecular Weight288.172544634
IUPAC Name(13R,14S,15S)-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2(7),3,5-triene-5,13,14-triol
Traditional Name(13R,14S,15S)-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-2(7),3,5-triene-5,13,14-triol
CAS Registry Number1228-72-4
SMILES
C[C@]12CCC3C(CCC4=C3C=CC(O)=C4)C1C[C@@H](O)[C@H]2O
InChI Identifier
InChI=1S/C18H24O3/c1-18-7-6-13-12-5-3-11(19)8-10(12)2-4-14(13)15(18)9-16(20)17(18)21/h3,5,8,13-17,19-21H,2,4,6-7,9H2,1H3/t13?,14?,15?,16-,17-,18+/m1/s1
InChI KeyPROQIPRRNZUXQM-MAHASAQBSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassEstrane steroids
Direct ParentEstrogens and derivatives
Alternative Parents
Substituents
  • Estrogen-skeleton
  • 3-hydroxysteroid
  • 17-hydroxysteroid
  • 16-hydroxysteroid
  • 16-alpha-hydroxysteroid
  • Hydroxysteroid
  • Phenanthrene
  • Tetralin
  • 1-hydroxy-2-unsubstituted benzenoid
  • Benzenoid
  • Cyclic alcohol
  • Secondary alcohol
  • 1,2-diol
  • Polyol
  • Organooxygen compound
  • Hydrocarbon derivative
  • Alcohol
  • Organic oxygen compound
  • Aromatic homopolycyclic compound
Molecular FrameworkAromatic homopolycyclic compounds
External DescriptorsNot Available
Ontology
StatusExpected but not Quantified
Origin
  • Endogenous
  • Exogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locations
  • Cell membrane
  • Cytoplasm
  • Membrane
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP2.54ALOGPS
logP2.67ChemAxon
logS-3.4ALOGPS
pKa (Strongest Acidic)10.33ChemAxon
pKa (Strongest Basic)-3.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area60.69 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity81.27 m³·mol⁻¹ChemAxon
Polarizability32.95 ųChemAxon
Number of Rings4ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Biological Properties
Cellular Locations
  • Cell membrane
  • Cytoplasm
  • Membrane
Biospecimen LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
HMDB IDHMDB0000356
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB021978
KNApSAcK IDNot Available
Chemspider ID23214132
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia Link17α-Epiestriol
METLIN ID5345
PubChem Compound44358113
PDB IDNot Available
ChEBI IDNot Available
References
Synthesis ReferenceBreuer, Heinz. Isolation of 17-epiestriol from the urine of pregnant women. Nature (London, United Kingdom) (1960), 185 613-14.
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available