Pyrazoloquinolone Impurity 7 CAS CATO-C4X-23897

Description

Compared with other compounds in its class, the molecular weight of 272.35 g/mol gives Pyrazoloquinolone Impurity 7 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

Pyrazoloquinolone Impurity 7 (CAS CATO-C4X-23897) is a certified pharmaceutical impurity reference standard with the molecular formula C15H20N4O and a molecular weight of 272.35 g/mol.

The molecular framework of Pyrazoloquinolone Impurity 7 (C15H20N4O) is characterized by a nitrogen-containing heterocyclic scaffold, an amide 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).

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