Sulfadimethoxine EP Impurity F CAS 19868-00-9

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.19868-00-9
Molecular FormulaC11H12N4O4S
Molecular Weight296.30 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Sulfadimethoxine EP Impurity F CAS 19868-00-9 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 Sulfadimethoxine EP Impurity F.

CATO supplies Sulfadimethoxine EP Impurity F (CAS 19868-00-9), a pharmacopoeial impurity reference standard (molecular formula C11H12N4O4S, MW 296.30 g/mol) used for the identification and quantification of trace impurities in APIs.

The molecular framework of Sulfadimethoxine EP Impurity F (C11H12N4O4S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.

CATO manufactures Sulfadimethoxine EP Impurity F 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 FormulaC11H12N4O4S
Molecular Weight296.30 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1962
Nitrogen Atoms4
Sulfur Atoms1

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