16,17-Epiestriol

Common Name

16,17-Epiestriol Description

16,17-Epiestriol is a hydroxylated metabolite of estradiol or estrone that has a hydroxyl group at C3-beta, 16-, and 17- position. Estriol is a major urinary estrogen. During pregnancy, large amount of estriol is produced by the placenta. Isomers with inversion of the hydroxyl group or groups are called epiestriol (16-beta, 17-alpha). Structure

Synonyms

Value Source 1617-EpiestriolChEMBL 16,17-Epi-estriolHMDB 16b,17a-EstriolHMDB 16b-Hydroxy-17a-estradiolHMDB Estra-1,3,5(10)-triene-3,16b,17a-triolHMDB trans-EstriolHMDB

Chemical Formlia

C18H24O3 Average Molecliar Weight

288.3814 Monoisotopic Molecliar Weight

288.172544634 IUPAC Name

(1S,10R,11S,13S,14S,15S)-15-methyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadeca-2(7),3,5-triene-5,13,14-triol Traditional Name

16,17-epiestriol CAS Registry Number

793-89-5 SMILES

[H][C@@]12C[C@H](O)[C@@H](O)[C@@]1(C)CC[C@]1([H])C3=C(CC[C@@]21[H])C=C(O)C=C3

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 Key

PROQIPRRNZUXQM-LMMHAMTPSA-N Chemical Taxonomy Classification

Not classified Ontology Status

Expected but not Quantified Origin

  • Endogenous
  • Food
  • Biofunction

  • Cell signaling
  • Fuel and energy storage
  • Fuel or energy source
  • Hormones, Membrane component
  • Membrane integrity/stability
  • Application

  • Nutrients
  • Stabilizers
  • Surfactants and Emlisifiers
  • Cellliar locations

  • Cytoplasm
  • Extracellliar
  • Membrane
  • Physical Properties State

    Solid Experimental Properties

    Property Value Reference Melting PointNot AvailableNot Available Boiling PointNot AvailableNot Available Water SolubilityNot AvailableNot Available LogPNot AvailableNot Available

    Predicted Properties

    Property Value Source Water Solubility0.12 mg/mLALOGPS 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 Å2ChemAxon Rotatable Bond Count0ChemAxon Refractivity81.27 m3·mol-1ChemAxon Polarizability32.95 Å3ChemAxon Number of Rings4ChemAxon Bioavailability1ChemAxon Rlie of FiveYesChemAxon Ghose FilterYesChemAxon Vebers RlieYesChemAxon MDDR-like RlieYesChemAxon

    Spectra Spectra

    Not Available Biological Properties Cellliar Locations

  • Cytoplasm
  • Extracellliar
  • Membrane
  • Biofluid Locations

    Not Available Tissue Location

    Not Available Pathways

    Not Available Normal Concentrations Not Available Abnormal Concentrations

    Not Available Associated Disorders and Diseases Disease References

    None Associated OMIM IDs

    None External Links DrugBank ID

    Not Available DrugBank Metabolite ID

    Not Available Phenol Explorer Compound ID

    Not Available Phenol Explorer Metabolite ID

    Not Available FoodDB ID

    FDB022041 KNApSAcK ID

    Not Available Chemspider ID

    13628086 KEGG Compound ID

    Not Available BioCyc ID

    Not Available BiGG ID

    Not Available Wikipedia Link

    Not Available NuGOwiki Link

    HMDB00431 Metagene Link

    HMDB00431 METLIN ID

    5420 PubChem Compound

    21252247 PDB ID

    Not Available ChEBI ID

    1150237

    Product: Conduritol B epoxide

    References Synthesis Reference Breuer, H.; Pangels, Gerta. Isolation of 17-epiestriol and 16,17-epiestriol from the urine of pregnant women. Z. physiol. Chem. (1960), 322 177-83. Material Safety Data Sheet (MSDS) Not Available General References
    1. Pierrat G, Prost M, Lavoue G, Lumbroso C: [Use of an ion exchanger as a rapid means of extraction, applied to the determination of urinary estrogens and pregnanediol in pregnancy, using colorimetry or gas chromatography]. Ann Biol Clin (Paris). 1976;34(6):423-30. [PubMed:1030927 ]

    PMID: 403938