Ensifentrine Impurity 22 CAS 298680-39-4

Description

Compared with other compounds in its class, the molecular weight of 434.53 g/mol gives Ensifentrine Impurity 22 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Ensifentrine Impurity 22 (CAS 298680-39-4) is a certified pharmaceutical impurity reference standard with the molecular formula C25H30N4O3 and a molecular weight of 434.53 g/mol.

Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Ensifentrine Impurity 22 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 434.53 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).

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

Why CATO?

• ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
• 130,000+ catalog items in stock, COA supplied with every batch
• Worldwide shipping with full export documentation (HS code guidance available)
• Technical support: +86 18665070610 / Nicole.chen@cato-chem.com