4,16a-Dibromoestrone CAS 81072-41-5

Purity 97%+In StockPharmaceutical Standards
CAS No.81072-41-5
Molecular FormulaC18H20Br2O2
Molecular Weight428.16 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

4,16a-Dibromoestrone CAS 81072-41-5 chemical structure

Description

4,16a-Dibromoestrone (CAS 81072-41-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C18H20Br2O2. Molecular weight: 428.16 g/mol. Each batch is supplied with a Certificate of Analysis (COA).

Physical & Chemical Properties

Molecular FormulaC18H20Br2O2
Molecular Weight428.16 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at room temperature, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1980
Halogen ContentBr-containing

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