Flurbiprofen Impurity 41 CAS 535-11-5

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.535-11-5
Molecular FormulaC5H9BrO2
Molecular Weight181.03 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Flurbiprofen Impurity 41 CAS 535-11-5 chemical structure

Description

As a certified reference material (CRM), Flurbiprofen Impurity 41 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.

CATO supplies Flurbiprofen Impurity 41 (CAS 535-11-5), a pharmacopoeial impurity reference standard (molecular formula C5H9BrO2, MW 181.03 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Flurbiprofen Impurity 41 (C5H9BrO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 181.03 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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 FormulaC5H9BrO2
Molecular Weight181.03 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.)1957
Halogen ContentBr-containing

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