Betamethasone Impurity 78 CAS CATO-C4X-143778

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-143778
Molecular Formula-
Molecular Weight345.38 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Betamethasone Impurity 78 CAS CATO-C4X-143778 chemical structure

Description

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

CATO supplies Betamethasone Impurity 78 (CAS CATO-C4X-143778), a pharmacopoeial impurity reference standard (molecular formula N/A, MW 345.38 g/mol) used for the identification and quantification of trace impurities in APIs.

Betamethasone Impurity 78 is supplied as a fully characterized reference material; its structural identity, assigned purity, and stability data are documented in the batch-specific Certificate of Analysis (COA).

As a certified reference material (CRM), Betamethasone Impurity 78 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC20H22AFO4
Molecular Weight345.38 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
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)9.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Halogen ContentF-containing

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