Sildenafil Impurity 56 CAS CATO-C4X-112856

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-112856
Molecular FormulaC9H13NaO4
Molecular Weight208.19 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Sildenafil Impurity 56 CAS CATO-C4X-112856 chemical structure

Description

CATO supplies Sildenafil Impurity 56 (CAS CATO-C4X-112856), a pharmacopoeial impurity reference standard (molecular formula C9H13NaO4, MW 208.19 g/mol) used for the identification and quantification of trace impurities in APIs.

Based on its molecular formula C9H13NaO4, Sildenafil Impurity 56 contains a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 208.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Sildenafil Impurity 56 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 FormulaC9H13NaO4
Molecular Weight208.19 g/mol
Purity>95%
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.5
UV AbsorptionUV-absorbing

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