Mestranol (CHEM003748)

IdentificationTaxonomyBiological PropertiesPhysical PropertiesToxicity ProfileSpectraConcentrationsLinksReferencesTargets (6)XML
Record Information
Version1.0
Creation Date2014-09-11 05:16:50 UTC
Update Date2026-03-31 17:52:48 UTC
Accession NumberCHEM003748
Identification
Common NameMestranol
ClassSmall Molecule
DescriptionThe 3-methyl ether of ethinyl estradiol. It must be demethylated to be biologically active. It is used as the estrogen component of many combination ORAL contraceptives.
Contaminant Sources
  • HMDB Contaminants - Urine
  • STOFF IDENT Compounds
  • T3DB toxins
  • ToxCast & Tox21 Chemicals
Contaminant Type
  • Drug
  • Ether
  • Metabolite
  • Organic Compound
  • Synthetic Compound
Chemical Structure
Thumb
MOLSDF3D-SDFPDBSMILESInChI View 3D Structure
SynonymsNot Available
Chemical FormulaC21H26O2
Average Molecular Mass310.437 g/mol
Monoisotopic Mass310.193 g/mol
CAS Registry Number72-33-3
IUPAC Name(1R,10S,11R,14S,15R)-14-ethynyl-5-methoxy-15-methyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadeca-2,4,6-trien-14-ol
Traditional Name(1R,10S,11R,14S,15R)-14-ethynyl-5-methoxy-15-methyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadeca-2,4,6-trien-14-ol
SMILES[H][C@]12CC[C@](O)(C#C)[C@]1(C)CC[C@@]1([H])C3=CC=C(OC)C=C3CC[C@]21[H]
InChI IdentifierInChI=1S/C21H26O2/c1-4-21(22)12-10-19-18-7-5-14-13-15(23-3)6-8-16(14)17(18)9-11-20(19,21)2/h1,6,8,13,17-19,22H,5,7,9-12H2,2-3H3/t17-,18-,19+,20+,21+/m0/s1
InChI KeyIMSSROKUHAOUJS-WRTQPQOASA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as estrane steroids. These are steroids with a structure based on the estrane skeleton.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSteroids and steroid derivatives
Sub ClassEstrane steroids
Direct ParentEstrane steroids
Alternative Parents
Substituents
  • 17-hydroxysteroid
  • Hydroxysteroid
  • Estrane-skeleton
  • Phenanthrene
  • Tetralin
  • Anisole
  • Alkyl aryl ether
  • Benzenoid
  • Ynone
  • Tertiary alcohol
  • Cyclic alcohol
  • Acetylide
  • Ether
  • Organic oxygen compound
  • Hydrocarbon derivative
  • Organooxygen compound
  • Alcohol
  • Aromatic homopolycyclic compound
Molecular FrameworkAromatic homopolycyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginExogenous
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateSolid
AppearanceWhite powder.
Experimental Properties
PropertyValue
Melting Point150.5°C
Boiling PointNot Available
Solubility3.77e-03 g/L
Predicted Properties
PropertyValueSource
Water Solubility0.0038 g/LALOGPS
logP3.89ALOGPS
logP4.04ChemAxon
logS-4.9ALOGPS
pKa (Strongest Acidic)17.59ChemAxon
pKa (Strongest Basic)-1.7ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area29.46 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity91.86 m³·mol⁻¹ChemAxon
Polarizability36.59 ųChemAxon
Number of Rings4ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-0149000000-c1a392ac6a255cba0e08Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-03dr-0592000000-0cc5cea78731703ef0b3Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0k9f-3980000000-fe6e57c0238f233c2ba6Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0a4i-0009000000-85dc48ac6fb3820afe06Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0a4i-0069000000-cd914e79f9bb96f842c3Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0f76-0090000000-84d635c97eb379340fcaSpectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityMestranol is the 3-methyl ether of ethinylestradiol. Ethinylestradiol, is a synthetic derivative of estradiol. Ethinylestradiol is orally bio-active and the estrogen used in almost all modern formulations of combined oral contraceptive pills. It binds to (and activates) the estrogen receptor. Mestranol is a biologically inactive prodrug of ethinylestradiol to which it is demethylated in the liver with a conversion efficiency of 70%. Estrogens diffuse into their target cells and interact with a protein receptor. Target cells include the female reproductive tract, the mammary gland, the hypothalamus, and the pituitary. Estrogens increase the hepatic synthesis of sex hormone binding globulin (SHBG), thyroid-binding globulin (TBG), and other serum proteins and suppress follicle-stimulating hormone (FSH) from the anterior pituitary. The combination of an estrogen with a progestin suppresses the hypothalamic-pituitary system, decreasing the secretion of gonadotropin-releasing hormone (GnRH).
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)No indication of carcinogenicity to humans (not listed by IARC).
Uses/SourcesMestranol was used as one of the first oral contraceptives.
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 LinkNot Available
Chemspider IDNot Available
ChEBI IDNot Available
PubChem Compound ID12598371
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General ReferencesNot Available