Ketotifen Impurity 28 CAS CATO-C4X-204628

Description

Compared with other compounds in its class, the molecular weight of 319.38 g/mol gives Ketotifen Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Ketotifen Impurity 28 (CAS CATO-C4X-204628), a pharmacopoeial impurity reference standard (molecular formula C19H13NO2S, MW 319.38 g/mol) used for the identification and quantification of trace impurities in APIs.

Ketotifen Impurity 28 (C19H13NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.

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