Etacstil (Synonyms: DPC974; GW5638)

Cat. No.: HY-112746: FAQs
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Etacstil (GW5638) is a estrogen receptor antagonist that displays minimal uterotropic activity in ovariectomized rats and inhibits the agonist activity of Estradiol (HY-B0141), Tamoxifen (HY-13757A) and Raloxifene (HY-13738) in the environment. Etacstil is promising for research of breast cancer and bone protection.

For research use only. We do not sell to patients.

Etacstil Chemical Structure

CAS No. : 155701-61-4

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Estrogen receptor ERα ERβ ERRα ERRβ ERRγ

Biological Activity
Purity & Documentation
References
Customer Review

Description

Cellular Effect

Cell Line	Type	Value	Description	References
MCF7	IC₅₀	> 1.27 μM Compound: 3a, GW5638	Suppression of ER alpha in human MCF7 cells after 24 hrs by immunostaining analysis Suppression of ER alpha in human MCF7 cells after 24 hrs by immunostaining analysis	[PMID: 25790336]
MCF7	IC₅₀	> 100 μM Compound: 3a, GW5638	Agonist activity at ER alpha in human MCF7 cells assessed as PR gene expression after 24 hrs by laser scanning imaging cytometer analysis Agonist activity at ER alpha in human MCF7 cells assessed as PR gene expression after 24 hrs by laser scanning imaging cytometer analysis	[PMID: 25790336]
MCF7	EC₅₀	0.3 μM Compound: 3a, GW5638	Inhibition of cell proliferation in human MCF7 cells after 7 days by laser scanning imaging cytometer analysis Inhibition of cell proliferation in human MCF7 cells after 7 days by laser scanning imaging cytometer analysis	[PMID: 25790336]
MCF7	EC₅₀	0.39 μM Compound: 4, GW-5638	Induction of estrogen receptor-alpha degradation in human MCF7 cells after 4 hrs by in-cell western assay Induction of estrogen receptor-alpha degradation in human MCF7 cells after 4 hrs by in-cell western assay	[PMID: 25879485]
MCF7	IC₅₀	0.985 μM Compound: 4, GW-5638	Cytotoxicity against human MCF7 cells assessed as cell viability after 5 days by CellTiter-Glo assay Cytotoxicity against human MCF7 cells assessed as cell viability after 5 days by CellTiter-Glo assay	[PMID: 25879485]
MCF7	EC₅₀	390 nM Compound: GW-5638; 2	Induction of ERalpha degradation in human MCF7 cells in phenol red free RPMI medium containing 5% charcoal-stripped FBS incubated for 4 hrs by IRDye 800CW/DRAQ5 dye based in-cell Western assay Induction of ERalpha degradation in human MCF7 cells in phenol red free RPMI medium containing 5% charcoal-stripped FBS incubated for 4 hrs by IRDye 800CW/DRAQ5 dye based in-cell Western assay	[PMID: 30587451]
MCF7	IC₅₀	4 μM Compound: 3a, GW5638	Antagonist activity at ER alpha in human MCF7 cells assessed as inhibition of estradiol-induced PR expression treated for 24 hrs after incubation with estradiol for 30 mins by laser scanning imaging cytometer analysis Antagonist activity at ER alpha in human MCF7 cells assessed as inhibition of estradiol-induced PR expression treated for 24 hrs after incubation with estradiol for 30 mins by laser scanning imaging cytometer analysis	[PMID: 25790336]

Molecular Weight

354.44

Formula

C₂₅H₂₂O₂

CAS No.

155701-61-4

SMILES

CC/C(C1=CC=CC=C1)=C(C2=CC=CC=C2)/C3=CC=C(C=C3)/C=C/C(O)=O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation

Handling Instructions (2659 KB)

References

[1]. Willson TM, et al. Dissection of the molecular mechanism of action of GW5638, a novel estrogen receptor ligand, provides insights into the role of estrogen receptor in bone. Endocrinology. 1997 Sep;138(9):3901-11. [Content Brief]

Etacstil Related Classifications

Cancer

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The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass		Concentration		Volume		Molecular Weight *
	=		×		×

The dilution calculator equation

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

This equation is commonly abbreviated as: C₁V₁ = C₂V₂

Concentration _(start)	×	Volume _(start)	=	Concentration _(final)	×	Volume _(final)
	×		=		×
C1		V1		C2		V2

Help & FAQs

Do most proteins show cross-species activity?
Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Etacstil155701-61-4DPC974 GW5638DPC 974DPC-974GW5638GW 5638GW-5638Estrogen Receptor/ERRestrogen receptoruterotropic activitybreast cancerbone protectionInhibitorinhibitorinhibit

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