5.38005

BHPI

• Synonym(s): BHPI, 3,3- bis(4-Hydroxyphenyl)-7-methyl-1,3-dihydro-2H-indol-2-one, Estrogen Receptor α Inhibitor, 3,3-bis(4-Hydroxyphenyl)-7-methyl-1,3-dihydro-2H-indol-2-one, Estrogen Receptor α Inhibitor
• Empirical Formula (Hill Notation): C₂₁H₁₇NO₃
• CAS Number: 56632-39-4
• Molecular Weight: 331.36
• UNSPSC Code: 12352200
• PubChem Substance ID: 3860640
• NACRES: NA.77

Properties

• Assay: ≥98% (HPLC)
• Quality Level: 100
• form: powder
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: white
• solubility: DMSO: 50 mg/mL
• storage temp.: 2-8°C
• SMILES string: CC1=C2C(=CC=C1)C(C(=O)N2)(C3=CC=C(C=C3)O)C4=CC=C(C=C4)O

Description

General description

A cell-permeable, bioavailable, non-toxic dihydroindolone derived compound that directly interacts with ERα and noncompetitively inhibits E2-ERα regulated gene expression. Selectively arrests the proliferation of therapy resistant ERα⁺ cancer cells (0.1 - 1.0 µM; IC₅₀ = 15 nM for T47D cells) with no effect on ERα^- cells. Shown to hyperactivate PLCγ, deplete endoplasmic reticulum calcium store, elicit massive UPR, and inhibit protein synthesis continually. Downregulates chaperones synthesis and sustains UPR activated cell death. Rapidly induces tumor regression (>60% inhibition) in mouse MCF-7 xenografts (15 mg/kg, i.p., q.d.).

A cell-permeable, bioavailable, non-toxic dihydroindolone derived compound that directly interacts with ERα and noncompetitively inhibits E2-ERα regulated gene expression. Selectively arrests the proliferation of therapy resistant ERα⁺ cancer cells (0.1 - 1.0 µM; IC₅₀ = 15 nM for T47D cells) with no effect on ERα^- cells. Shown to hyperactivate PLCγ, deplete endoplasmic reticulum calcium store, elicit massive UPR, and inhibit protein synthesis continually. Downregulates chaperones synthesis and sustains UPR activated cell death. Rapidly induces tumor regression (>60% inhibition) in mouse MCF-7 xenografts (15 mg/kg, i.p., q.d.).

Please note that the molecular weight for this compound is batch-specific due to variable water content. Please refer to the vial label or the certificate of analysis for the batch-specific molecular weight. The molecular weight provided represents the baseline molecular weight without water.

Biochem/physiol Actions

Cell permeable: yes

Primary Target
ERα

Reversible: yes

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Andruska, N.D., et al. 2015. Proc. Natl. Acad. Sci. USA.112, 4737.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable