Ethinylestradiol EP Impurity A CAS 4717-38-8

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.4717-38-8
Molecular FormulaC20H24O2
Molecular Weight296.40 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ethinylestradiol EP Impurity A CAS 4717-38-8 chemical structure

Description

Ethinylestradiol EP Impurity A (CAS 4717-38-8) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H24O2. Molecular weight: 296.40 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC20H24O2
Molecular Weight296.40 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)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958

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