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Record Information
Version3.6
Creation Date2012-09-06 15:16:52 UTC
Update Date2016-02-11 01:32:56 UTC
HMDB IDHMDB15446
Secondary Accession NumbersNone
Metabolite Identification
Common NameMestranol
DescriptionMestranol is only found in individuals that have used or taken this drug. It is the 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. [PubChem]Mestranol 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).
Structure
Thumb
Synonyms
ValueSource
(+)-17alpha-Ethynyl-17beta-hydroxy-3-methoxy-1,3,5(10)-estratrieneChEBI
(+)-17alpha-Ethynyl-17beta-hydroxy-3-methoxy-1,3,5(10)-oestratrieneChEBI
17-Ethynyl-3-methoxyoestra-1(10),2,4-trien-17beta-olChEBI
3-Methoxy-17alpha-ethynylestradiolChEBI
3-Methoxy-19-norpregna-1,3,5(10)-trien-20-yn-17beta-olChEBI
Ethynylestradiol 3-methyl etherChEBI
MestranolumChEBI
Chemical FormulaC21H26O2
Average Molecular Weight310.4299
Monoisotopic Molecular Weight310.193280076
IUPAC Name(1S,10R,11S,14R,15S)-14-ethynyl-5-methoxy-15-methyltetracyclo[8.7.0.0²,⁷.0¹¹,¹⁵]heptadeca-2(7),3,5-trien-14-ol
Traditional Namemestranol
CAS Registry Number72-33-3
SMILES
[H][C@@]12CC[C@@](O)(C#C)[C@@]1(C)CC[C@]1([H])C3=C(CC[C@@]21[H])C=C(OC)C=C3
InChI Identifier
InChI=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+/m1/s1
InChI KeyInChIKey=IMSSROKUHAOUJS-MJCUULBUSA-N
Chemical Taxonomy
DescriptionThis compound 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
  • Ether
  • Hydrocarbon derivative
  • Organooxygen compound
  • Alcohol
  • Aromatic homopolycyclic compound
Molecular FrameworkAromatic homopolycyclic compounds
External Descriptors
Ontology
StatusExpected but not Quantified
Origin
  • Drug
Biofunction
  • Cell signaling
  • Estrogens
  • Fuel and energy storage
  • Fuel or energy source
  • Membrane integrity/stability
Application
  • Nutrients
  • Pharmaceutical
  • Stabilizers
  • Surfactants and Emulsifiers
Cellular locations
  • Cytoplasm
  • Extracellular
  • Membrane
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point150.5 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility3.77e-03 g/LNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.0038 mg/mLALOGPS
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 Å2ChemAxon
Rotatable Bond Count1ChemAxon
Refractivity91.86 m3·mol-1ChemAxon
Polarizability36.7 Å3ChemAxon
Number of Rings4ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
MSMass Spectrum (Electron Ionization)splash10-01t9-1972000000-5e394201ba0e38e5391fView in MoNA
1D NMR13C NMR SpectrumNot Available
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane
Biofluid Locations
  • Blood
  • Urine
Tissue LocationNot Available
PathwaysNot Available
Normal Concentrations
BiofluidStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot ApplicableNot AvailableNot AvailableTaking drug identified by DrugBank entry DB01357
  • Not Applicable
details
UrineExpected but not QuantifiedNot ApplicableNot AvailableNot AvailableTaking drug identified by DrugBank entry DB01357
  • Not Applicable
details
Abnormal Concentrations
Not Available
Predicted Concentrations
BiofluidValueOriginal ageOriginal sexOriginal conditionComments
Blood0-3 uMAdult (>18 years old)BothNormalPredicted based on drug qualities
Blood0-2 umol/mmol creatinineAdult (>18 years old)BothNormalPredicted based on drug qualities
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB01357
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID6054
KEGG Compound IDC07618
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkMestranol
NuGOwiki LinkHMDB15446
Metagene LinkHMDB15446
METLIN IDNot Available
PubChem Compound6291
PDB IDNot Available
ChEBI ID6784
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Enzymes

General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics. This enzyme contributes to the wide pharmacokinetics variability of the metabolism of drugs such as S-warfarin, diclofenac, phenytoin, tolbutamide and losartan.
Gene Name:
CYP2C9
Uniprot ID:
P11712
Molecular weight:
55627.365
References
  1. Zhou SF, Zhou ZW, Yang LP, Cai JP: Substrates, inducers, inhibitors and structure-activity relationships of human Cytochrome P450 2C9 and implications in drug development. Curr Med Chem. 2009;16(27):3480-675. Epub 2009 Sep 1. [19515014 ]
  2. Schmider J, Greenblatt DJ, von Moltke LL, Karsov D, Vena R, Friedman HL, Shader RI: Biotransformation of mestranol to ethinyl estradiol in vitro: the role of cytochrome P-450 2C9 and metabolic inhibitors. J Clin Pharmacol. 1997 Mar;37(3):193-200. [9089421 ]
General function:
Involved in sequence-specific DNA binding transcription factor activity
Specific function:
Nuclear hormone receptor. The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Can activate the transcriptional activity of TFF1
Gene Name:
ESR1
Uniprot ID:
P03372
Molecular weight:
66215.4
References
  1. Dulos J, Vijn P, van Doorn C, Hofstra CL, Veening-Griffioen D, de Graaf J, Dijcks FA, Boots AM: Suppression of the inflammatory response in experimental arthritis is mediated via estrogen receptor alpha but not estrogen receptor beta. Arthritis Res Ther. 2010;12(3):R101. Epub 2010 May 24. [20497523 ]
  2. Cleuren AC, Van der Linden IK, De Visser YP, Wagenaar GT, Reitsma PH, Van Vlijmen BJ: 17alpha-Ethinylestradiol rapidly alters transcript levels of murine coagulation genes via estrogen receptor alpha. J Thromb Haemost. 2010 Aug;8(8):1838-46. doi: 10.1111/j.1538-7836.2010.03930.x. Epub 2010 May 27. [20524981 ]
  3. Chen X, Ji ZL, Chen YZ: TTD: Therapeutic Target Database. Nucleic Acids Res. 2002 Jan 1;30(1):412-5. [11752352 ]