Dotinurad Impurity 191 CAS CATO-C4X-2494191

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-2494191
Molecular FormulaC13H9Cl2NO4S
Molecular Weight346.19 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Dotinurad Impurity 191 CAS CATO-C4X-2494191 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Dotinurad Impurity 191.

CATO supplies Dotinurad Impurity 191 (CAS CATO-C4X-2494191), a pharmacopoeial impurity reference standard (molecular formula C13H9Cl2NO4S, MW 346.19 g/mol) used for the identification and quantification of trace impurities in APIs.

Structurally, Dotinurad Impurity 191 (C13H9Cl2NO4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 346.19 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

CATO manufactures Dotinurad Impurity 191 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC13H9Cl2NO4S
Molecular Weight346.19 g/mol
Purity97%+
StorageStore at 2-8°C, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Halogen ContentCl-containing
Nitrogen Atoms1
Sulfur Atoms1

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