Sivelestat Impurity 28 CAS CATO-C4X-212328

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-212328
Molecular FormulaC7H8O4S
Molecular Weight188.20 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Sivelestat Impurity 28 CAS CATO-C4X-212328 chemical structure

Description

As a certified reference material (CRM), Sivelestat Impurity 28 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.

Sivelestat Impurity 28 (CAS CATO-C4X-212328) is a certified pharmaceutical impurity reference standard with the molecular formula C7H8O4S and a molecular weight of 188.20 g/mol.

Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Sivelestat Impurity 28 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 188.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.

Physical & Chemical Properties

Molecular FormulaC7H8O4S
Molecular Weight188.20 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Sulfur Atoms1

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