Mometasone Furoate EP Impurity S CAS 2231764-75-1

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.2231764-75-1
Molecular FormulaC27H30Cl2O6
Molecular Weight521.43 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Mometasone Furoate EP Impurity S CAS 2231764-75-1 chemical structure

Description

The occurrence of Mometasone Furoate EP Impurity S is closely related to a steroid core, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

CATO supplies Mometasone Furoate EP Impurity S (CAS 2231764-75-1), a pharmacopoeial impurity reference standard (molecular formula C27H30Cl2O6, MW 521.43 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Mometasone Furoate EP Impurity S (C27H30Cl2O6) contains a steroid core, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 521.43 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.

As a certified reference material (CRM), Mometasone Furoate EP Impurity S 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 FormulaC27H30Cl2O6
Molecular Weight521.43 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1998
Halogen ContentCl-containing

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