Cloxacillin Impurity 5 CAS CATO-C4X-15975
| CAS No. | CATO-C4X-15975 |
| Molecular Formula | C20H22ClN3O6S |
| Molecular Weight | 467.92 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cloxacillin Impurity 5 is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
As a process- or degradation-related impurity, Cloxacillin Impurity 5 (CAS CATO-C4X-15975, C20H22ClN3O6S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Cloxacillin Impurity 5 (C20H22ClN3O6S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), Cloxacillin Impurity 5 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C20H22ClN3O6S |
| Molecular Weight | 467.92 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cloxacillin Standards
- Cloxacillin Impurity 21 (CAS CATO-C4X-159721)
- Cloxacillin Impurity 8 (CAS 76788-83-5)
- Cloxacillin Impurity 22 (CAS CATO-C4X-159722)
- Cloxacillin Impurity 20 (CAS CATO-C4X-159720)
- Cloxacillin EP Impurity A (CAS 1642629-96-6)
- Cloxacillin Impurity 25 (CAS CATO-C4X-159725)
- Cloxacillin Impurity 13 (CAS 5053-36-1)
- Cloxacillin Impurity 6 (CAS CATO-C4X-15976)
Recommended Standards
- Pelitinib (CAS 257933-82-7)
- Chlorpromazine ring opening methyl ester (CAS CATO-C4X-232140)
- 8-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-3,3-dimethyl-N-phenyl-1,4,8-triazaspiro[4.5]Decane-1-carboxamide (CAS 338761-60-7)
- Halobetasol Impurity 10 (CAS CATO-C4X-331410)
- Peficitinib Impurity 5【Discontinued,See C4X-28071】 (CAS CATO-C4X-28075)
- Pitolisant Impurity 1 (CAS CATO-C4X-25201)
- Bumetanide EP Impurity B (CAS 28328-54-3)
- 3-(2-Nitroethenyl)pyridine (CAS 3156-52-3)
- 5-Bromo-3-cyclobutyl-1-methyl-1H-1,2,4-triazole (CAS 1784406-82-1)
- 2-[3,5-bis(difluoromethyl)-4-nitro-1H-pyrazol-1-yl]acetic acid (CAS 1171731-28-4)
- 4-Chloro-2-fluoro-3-methoxyaniline (CAS 1323966-39-7)
- 3-Ethoxy-5-nitro-1H-indazole (CAS 1365939-15-6)
- 4-(Acetyloxy)-3,3-dimethylbutanoic acid (CAS 881019-76-7)
- Semaglutide Impurity 6 (CAS 62-57-7)
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