Difamilast Impurity 4 CAS 2103190-65-2

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.2103190-65-2
Molecular FormulaC23H24F2N2O6
Molecular Weight462.44 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Difamilast Impurity 4 CAS 2103190-65-2 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 462.44 g/mol gives Difamilast Impurity 4 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

As a process- or degradation-related impurity, Difamilast Impurity 4 (CAS 2103190-65-2, C23H24F2N2O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.

Difamilast Impurity 4 (C23H24F2N2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC23H24F2N2O6
Molecular Weight462.44 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
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)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1997
Halogen ContentF-containing
Nitrogen Atoms2

Related Difamilast Standards

Recommended Standards

Why CATO?