Beclometasone Dipropionate Monohydrate EP Impurity D CAS 52092-14-5

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.52092-14-5
Molecular FormulaC28H37BrO7
Molecular Weight565.49 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Beclometasone Dipropionate Monohydrate EP Impurity D CAS 52092-14-5 chemical structure

Description

The occurrence of Beclometasone Dipropionate Monohydrate EP Impurity D is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Beclometasone Dipropionate Monohydrate EP Impurity D (CAS 52092-14-5), a pharmacopoeial impurity reference standard (molecular formula C28H37BrO7, MW 565.49 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Beclometasone Dipropionate Monohydrate EP Impurity D (C28H37BrO7) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 565.49 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC28H37BrO7
Molecular Weight565.49 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1971
Halogen ContentBr-containing

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