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Bazedoxifene (WAY-140424) HCl Estrogen/progestogen Receptor modulator

Cat.No.S2128

Bazedoxifene HCl (WAY-140424, TSE-424) is a novel, non-steroidal, indole-based estrogen receptor modulator (SERM) binding to both ERα and ERβ with IC50 of 23 nM and 89 nM, respectively.
Bazedoxifene (WAY-140424) HCl Estrogen/progestogen Receptor modulator Chemical Structure

Chemical Structure

Molecular Weight: 507.06

Quality Control

Chemical Information, Storage & Stability

Molecular Weight 507.06 Formula

C30H34N2O3.HCl

Storage (From the date of receipt)
CAS No. 198480-56-7 -- Storage of Stock Solutions

Synonyms TSE-424 Smiles CC1=C(N(C2=C1C=C(C=C2)O)CC3=CC=C(C=C3)OCCN4CCCCCC4)C5=CC=C(C=C5)O.Cl

Solubility

In vitro
Batch:

DMSO : 90 mg/mL ( (177.49 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo
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Mechanism of Action

Targets/IC50/Ki
ERα [1]
(radioligand binding assay)
23 nM
ERβ [1]
(radioligand binding assay)
89 nM
In vitro
Bazedoxifene is a third generation selective estrogen receptor modulator (SERM). Bazedoxifene does not stimulate ERα mediated transcriptional activity and acts as an antagonist to estradiol in cultured breast cancer (bMCF-7) cells. Similar results are seen in other cell lines including CHO (ovarian), HepG2 (hepatic) or GTI-7 (neuronal) with bazedoxifene having no ERα agonist activity and acting as an antagonist to estradiol action.[2] Bazedoxifene does not stimulate proliferation of MCF-7 cells but did inhibit 17β-estradiol-induced proliferation with IC50 of 0.19 nM. [3]
Kinase Assay
Ligand binding competition experiments
Test compounds are initially solubilized in DMSO and the final concentration of DMSO in the binding assay is ≤ 1%. Eight dilutions of each test compound are used as an unlabelled competitor for [3H]17β-estradiol. Typically, a set of compound dilutions would be tested simultaneously on human, rat and mouse ER-α and ER-β. The results are plotted as measured DPM vs. concentration of test compound. For dose-response curve fitting, a four parameter logistic model on the transformed, weighted data are fit and the IC50 is defined as the concentration of compound decreasing maximum [3H]estradiol binding by 50%. For active compounds, the IC50 is determined at least three times. It should be noted that IC50 values are not direct measures of a ligand’s affinity for the receptor. Rather, they can only be compared as relative values, in this case to 17β-estradiol.
In vivo
In an immature rat model, bazedoxifene increases uterine wet weight 35% at a dose of 0.5 mg/kg compared to an 85% increase with raloxifene at the same dose and a 300% increase in uterine weight with ethinyl estradiol at a dose of 10 μg/kg. Ovarectomized rats treated with 0.3 mg/d bazedoxifene displayed maintenance of bone mass and bone strength similar to effects seen with 2 μg/d ethinyl estradiol, 3 mg/d raloxifene, or sham operated animals. [2]
References

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03475719 Unknown status
Osteoporosis Postmenopausal
Huons Co. Ltd.
January 11 2018 Phase 1
NCT03005340 Unknown status
Healthy
Alvogen Korea
December 2016 Phase 1
NCT02729701 Completed
Breast Cancer
University of Kansas Medical Center|Pfizer
May 2016 Phase 2
NCT01973738 Unknown status
Selective Estrogen Receptor Modulator
Toshihiko Kono|Tomidahama Hospital
January 2012 --

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