17 alpha Dihydroequilin (CHEM043907)

IdentificationTaxonomyBiological PropertiesPhysical PropertiesToxicity ProfileSpectraConcentrationsLinksReferencesXML
Record Information
Version1.0
Creation Date2016-06-03 11:25:33 UTC
Update Date2026-03-26 21:38:27 UTC
Accession NumberCHEM043907
Identification
Common Name17 alpha Dihydroequilin
ClassSmall Molecule
Description17α-Dihydroequilenin, or α-dihydroequilenin, also known as 6,8-didehydro-17α-estradiol, as well as estra-1,3,5(10),6,8-pentaen-3,17α-diol, is a naturally occurring steroidal estrogen found in horses which is closely related to equilin, equilenin, and 17α-estradiol, and, as the 3-sulfate ester sodium salt, is a minor constituent (1.2%) of conjugated estrogens (Premarin).
Contaminant Sources
  • STOFF IDENT Compounds
Contaminant TypeNot Available
Chemical Structure
Thumb
MOLSDF3D-SDFPDBSMILESInChI View 3D Structure
Synonyms
ValueSource
17a-DihydroequileninGenerator
17Α-dihydroequileninGenerator
Chemical FormulaC18H20O2
Average Molecular Mass268.356 g/mol
Monoisotopic Mass268.146 g/mol
CAS Registry Number6639-99-2
IUPAC Name(11S,14R,15S)-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-1(10),2,4,6,8-pentaene-5,14-diol
Traditional Name(11S,14R,15S)-15-methyltetracyclo[8.7.0.0^{2,7}.0^{11,15}]heptadeca-1(10),2,4,6,8-pentaene-5,14-diol
SMILES[H][C@@]1(O)CC[C@@]2([H])C3=C(CC[C@]12C)C1=CC=C(O)C=C1C=C3
InChI IdentifierInChI=1S/C18H20O2/c1-18-9-8-14-13-5-3-12(19)10-11(13)2-4-15(14)16(18)6-7-17(18)20/h2-5,10,16-17,19-20H,6-9H2,1H3/t16-,17+,18-/m0/s1
InChI KeyRYWZPRVUQHMJFF-KSZLIROESA-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-hydroxy-delta-7-steroid
  • 3-hydroxysteroid
  • Hydroxysteroid
  • 17-hydroxysteroid
  • Delta-7-steroid
  • Phenanthrol
  • Phenanthrene
  • 2-naphthol
  • Naphthalene
  • Tetralin
  • 1-hydroxy-2-unsubstituted benzenoid
  • Benzenoid
  • Cyclic alcohol
  • Secondary alcohol
  • Organooxygen compound
  • Hydrocarbon derivative
  • Alcohol
  • Organic oxygen compound
  • Aromatic homopolycyclic compound
Molecular FrameworkAromatic homopolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.0056 g/LALOGPS
logP4.14ALOGPS
logP3.74ChemAxon
logS-4.7ALOGPS
pKa (Strongest Acidic)9.79ChemAxon
pKa (Strongest Basic)-2.9ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area40.46 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity79.86 m³·mol⁻¹ChemAxon
Polarizability30.75 ųChemAxon
Number of Rings4ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0uxr-0090000000-b782ef66874f17115308Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0uxr-0190000000-79756534f68bb855c631Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-007c-2390000000-a5e376fe432b9b62c476Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0090000000-8d1fc31a53a3e2130907Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014i-0090000000-8ea6ddae64d6e9f44c2bSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0fe0-0090000000-e3a6f413a586d9f40c19Spectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDNot Available
HMDB IDNot Available
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia Link17α-Dihydroequilenin
Chemspider IDNot Available
ChEBI ID34178
PubChem Compound ID223998
Kegg Compound IDC14498
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General ReferencesNot Available