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Identification
NameAfimoxifene
Accession NumberDB04468  (EXPT02425)
TypeSmall Molecule
GroupsInvestigational
Description

Afimoxifene (4-Hydroxytamoxifen, trade name TamoGel) is a new estrogen inhibitor under investigation for a variety of estrogen-dependent conditions, including cyclic breast pain and gynecomastia. TamoGel is formulated using Enhanced Hydroalcoholic Gel (EHG) Technology. This technology enables percutaneous delivery of drugs that cannot be delivered orally. It is being developed by Ascent Therapeutics.

Structure
Thumb
Synonyms
4-Hydroxytamoxifen
4-monohydroxytamoxifen
4-OHT
External Identifiers
  • 68047-06-3
Approved Prescription ProductsNot Available
Approved Generic Prescription ProductsNot Available
Approved Over the Counter ProductsNot Available
Unapproved/Other Products Not Available
International Brands
NameCompany
TamogelNot Available
Brand mixturesNot Available
SaltsNot Available
Categories
UNII95K54647BZ
CAS number68392-35-8
WeightAverage: 387.514
Monoisotopic: 387.219829177
Chemical FormulaC26H29NO2
InChI KeyTXUZVZSFRXZGTL-QPLCGJKRSA-N
InChI
InChI=1S/C26H29NO2/c1-4-25(20-8-6-5-7-9-20)26(21-10-14-23(28)15-11-21)22-12-16-24(17-13-22)29-19-18-27(2)3/h5-17,28H,4,18-19H2,1-3H3/b26-25-
IUPAC Name
4-[(1Z)-1-{4-[2-(dimethylamino)ethoxy]phenyl}-2-phenylbut-1-en-1-yl]phenol
SMILES
CC\C(=C(/C1=CC=C(O)C=C1)C1=CC=C(OCCN(C)C)C=C1)C1=CC=CC=C1
Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as stilbenes. These are organic compounds containing a 1,2-diphenylethylene moiety. Stilbenes (C6-C2-C6 ) are derived from the common phenylpropene (C6-C3) skeleton building block. The introduction of one or more hydroxyl groups to a phenyl ring lead to stilbenoids.
KingdomOrganic compounds
Super ClassPhenylpropanoids and polyketides
ClassStilbenes
Sub ClassNot Available
Direct ParentStilbenes
Alternative Parents
Substituents
  • Stilbene
  • Diphenylmethane
  • Phenylpropene
  • Phenylpropane
  • Phenol ether
  • Phenol
  • Alkyl aryl ether
  • Benzenoid
  • Monocyclic benzene moiety
  • Tertiary aliphatic amine
  • Tertiary amine
  • Ether
  • Hydrocarbon derivative
  • Organooxygen compound
  • Organonitrogen compound
  • Amine
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External DescriptorsNot Available
Pharmacology
IndicationFor the potential treatment of menstrual-cycle related mastalgia, fibrocystic breast disease, breast disease, gynecomastia and Keloid scarring.
PharmacodynamicsNot Available
Mechanism of actionAfimoxifene binds to estrogen receptors (ER), inducing a conformational change in the receptor. This results in a blockage or change in the expression of estrogen dependent genes.
Related Articles
AbsorptionAbsorbed following topical application.
Volume of distributionNot Available
Protein bindingNot Available
MetabolismNot Available
Route of eliminationNot Available
Half lifeNot Available
ClearanceNot Available
ToxicityNot Available
Affected organisms
  • Humans and other mammals
PathwaysNot Available
SNP Mediated EffectsNot Available
SNP Mediated Adverse Drug ReactionsNot Available
ADMET
Predicted ADMET features
PropertyValueProbability
Human Intestinal Absorption+0.9936
Blood Brain Barrier-0.6271
Caco-2 permeable+0.8522
P-glycoprotein substrateSubstrate0.7715
P-glycoprotein inhibitor IInhibitor0.8359
P-glycoprotein inhibitor IIInhibitor0.5471
Renal organic cation transporterInhibitor0.6067
CYP450 2C9 substrateNon-substrate0.7876
CYP450 2D6 substrateSubstrate0.7641
CYP450 3A4 substrateSubstrate0.72
CYP450 1A2 substrateInhibitor0.7407
CYP450 2C9 inhibitorNon-inhibitor0.8685
CYP450 2D6 inhibitorInhibitor0.7958
CYP450 2C19 inhibitorNon-inhibitor0.8812
CYP450 3A4 inhibitorNon-inhibitor0.831
CYP450 inhibitory promiscuityLow CYP Inhibitory Promiscuity0.6389
Ames testNon AMES toxic0.8955
CarcinogenicityNon-carcinogens0.6202
BiodegradationNot ready biodegradable0.83
Rat acute toxicity1.9661 LD50, mol/kg Not applicable
hERG inhibition (predictor I)Strong inhibitor0.6942
hERG inhibition (predictor II)Inhibitor0.6346
ADMET data is predicted using admetSAR, a free tool for evaluating chemical ADMET properties. (23092397 )
Pharmacoeconomics
ManufacturersNot Available
PackagersNot Available
Dosage formsNot Available
PricesNot Available
PatentsNot Available
Properties
StateSolid
Experimental PropertiesNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.00303 mg/mLALOGPS
logP5.44ALOGPS
logP5.69ChemAxon
logS-5.1ALOGPS
pKa (Strongest Acidic)9.45ChemAxon
pKa (Strongest Basic)8.66ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area32.7 Å2ChemAxon
Rotatable Bond Count8ChemAxon
Refractivity130.41 m3·mol-1ChemAxon
Polarizability45.22 Å3ChemAxon
Number of Rings3ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Mass Spec (NIST)Not Available
SpectraNot Available
References
Synthesis ReferenceNot Available
General References
  1. Bollig A, Xu L, Thakur A, Wu J, Kuo TH, Liao JD: Regulation of intracellular calcium release and PP1alpha in a mechanism for 4-hydroxytamoxifen-induced cytotoxicity. Mol Cell Biochem. 2007 Nov;305(1-2):45-54. Epub 2007 Jul 24. [PubMed:17646931 ]
  2. Mansel R, Goyal A, Nestour EL, Masini-Eteve V, O'Connell K: A phase II trial of Afimoxifene (4-hydroxytamoxifen gel) for cyclical mastalgia in premenopausal women. Breast Cancer Res Treat. 2007 Dec;106(3):389-97. Epub 2007 Mar 10. [PubMed:17351746 ]
  3. Leblanc K, Sexton E, Parent S, Belanger G, Dery MC, Boucher V, Asselin E: Effects of 4-hydroxytamoxifen, raloxifene and ICI 182 780 on survival of uterine cancer cell lines in the presence and absence of exogenous estrogens. Int J Oncol. 2007 Feb;30(2):477-87. [PubMed:17203231 ]
  4. Cardoso CM, Almeida LM, Custodio JB: 4-Hydroxytamoxifen is a potent inhibitor of the mitochondrial permeability transition. Mitochondrion. 2002 Oct;1(6):485-95. [PubMed:16120301 ]
External Links
ATC CodesNot Available
AHFS CodesNot Available
PDB Entries
FDA labelNot Available
MSDSNot Available
Interactions
Drug InteractionsNot Available
Food InteractionsNot Available

Targets

Kind
Protein
Organism
Human
Pharmacological action
unknown
General Function:
Zinc ion binding
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. Ligand-dependent nuclear transactivation involves either direct homodimer binding to a palindromic estrogen response element (ERE) sequence or association with other DNA-binding transcription fact...
Gene Name:
ESR1
Uniprot ID:
P03372
Molecular Weight:
66215.45 Da
References
  1. Reed CA, Berndtson AK, Nephew KP: Dose-dependent effects of 4-hydroxytamoxifen, the active metabolite of tamoxifen, on estrogen receptor-alpha expression in the rat uterus. Anticancer Drugs. 2005 Jun;16(5):559-67. [PubMed:15846122 ]
Kind
Protein
Organism
Human
Pharmacological action
unknown
General Function:
Zinc ion binding
Specific Function:
Nuclear hormone receptor. Binds estrogens with an affinity similar to that of ESR1, and activates expression of reporter genes containing estrogen response elements (ERE) in an estrogen-dependent manner (PubMed:20074560). Isoform beta-cx lacks ligand binding ability and has no or only very low ere binding activity resulting in the loss of ligand-dependent transactivation ability. DNA-binding by...
Gene Name:
ESR2
Uniprot ID:
Q92731
Molecular Weight:
59215.765 Da
References
  1. Reed CA, Berndtson AK, Nephew KP: Dose-dependent effects of 4-hydroxytamoxifen, the active metabolite of tamoxifen, on estrogen receptor-alpha expression in the rat uterus. Anticancer Drugs. 2005 Jun;16(5):559-67. [PubMed:15846122 ]
Kind
Protein
Organism
Human
Pharmacological action
unknown
General Function:
Zinc ion binding
Specific Function:
Orphan receptor that acts as transcription activator in the absence of bound ligand. Binds specifically to an estrogen response element and activates reporter genes controlled by estrogen response elements (By similarity). Induces the expression of PERM1 in the skeletal muscle.
Gene Name:
ESRRG
Uniprot ID:
P62508
Molecular Weight:
51305.485 Da
References
  1. Berman HM, Westbrook J, Feng Z, Gilliland G, Bhat TN, Weissig H, Shindyalov IN, Bourne PE: The Protein Data Bank. Nucleic Acids Res. 2000 Jan 1;28(1):235-42. [PubMed:10592235 ]
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Drug created on June 13, 2005 07:24 / Updated on April 28, 2016 16:39