Estriol EP Impurity B (Estrone) CAS 53-16-7

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.53-16-7
Molecular FormulaC18H22O2
Molecular Weight270.37 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Estriol EP Impurity B (Estrone) CAS 53-16-7 chemical structure

Description

High-purity Estriol EP Impurity B (Estrone) (CAS 53-16-7) pharmacopoeial impurity standards reference standard. Molecular formula: C18H22O2. Molecular weight: 270.37 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.

Physical & Chemical Properties

Molecular FormulaC18H22O2
Molecular Weight270.37 g/mol
AppearancePale yellow to yellow crystalline powder
Purity>95%
StorageStore at 2-8°C, 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
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957

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