Clobetasone butyrate EP Impurity E CAS 639817-48-4

Purity ≥95%In StockPharmacopoeial Impurity Standards
CAS No.639817-48-4
Molecular FormulaC26H34ClFO5
Molecular Weight481.00 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Clobetasone butyrate EP Impurity E CAS 639817-48-4 chemical structure

Description

Clobetasone butyrate EP Impurity E (CAS 639817-48-4) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C26H34ClFO5. Molecular weight: 481.00 g/mol. Each batch is supplied with a Certificate of Analysis (COA).

Physical & Chemical Properties

Molecular FormulaC26H34ClFO5
Molecular Weight481.00 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity≥95%
StorageStore at room temperature, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
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)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1985
Halogen ContentF/Cl-containing

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