Selexipag Impurity 14 CAS CATO-C4X-196129

Purity 97%+In StockPharmacopoeial Impurity Standards
CAS No.CATO-C4X-196129
Molecular FormulaC20H21N3O
Molecular Weight319.40 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Selexipag Impurity 14 CAS CATO-C4X-196129 chemical structure

Description

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Selexipag Impurity 14 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 319.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

Selexipag Impurity 14 (CAS CATO-C4X-196129) is a certified pharmaceutical impurity reference standard with the molecular formula C20H21N3O and a molecular weight of 319.40 g/mol.

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 FormulaC20H21N3O
Molecular Weight319.40 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
Nitrogen Atoms3

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