Rosuvastatin Impurity 198 CAS 5292-43-3

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.5292-43-3
Molecular FormulaC6H11BrO2
Molecular Weight195.05 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Rosuvastatin Impurity 198 CAS 5292-43-3 chemical structure

Description

Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, Rosuvastatin Impurity 198 is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 195.05 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

CATO supplies Rosuvastatin Impurity 198 (CAS 5292-43-3), a pharmacopoeial impurity reference standard (molecular formula C6H11BrO2, MW 195.05 g/mol) used for the identification and quantification of trace impurities in APIs.

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), Rosuvastatin Impurity 198 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 FormulaC6H11BrO2
Molecular Weight195.05 g/mol
Purity>95%
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityContains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)1.0
CAS Registry Year (est.)1958
Halogen ContentBr-containing

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