Ceftazidime Impurity 93 CAS CATO-C4X-121293
| CAS No. | CATO-C4X-121293 |
| Molecular Formula | C21H21N5O6S2 |
| Molecular Weight | 503.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Ceftazidime Impurity 93 (C21H21N5O6S2) is characterized by a flavonoid core, an amide group, a sulfone 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).
CATO supplies Ceftazidime Impurity 93 (CAS CATO-C4X-121293), a pharmacopoeial impurity reference standard (molecular formula C21H21N5O6S2, MW 503.55 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Ceftazidime Impurity 93 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H21N5O6S2 |
| Molecular Weight | 503.55 g/mol |
| Purity | ≥90% |
| 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Ceftazidime Standards
- Ceftazidime Impurity 107 (CAS CATO-C4X-1212107)
- Ceftazidime Impurity 62 (CAS CATO-C4X-121262)
- Ceftazidime Impurity 108 (CAS CATO-C4X-1212108)
- Ceftazidime Impurity C07 (CAS 752152-44-6)
- Ceftazidime Impurity 110 (CAS CATO-C4X-1212110)
- Ceftazidime Impurity 60 (CAS CATO-C4X-121260)
- Ceftazidime Impurity 42 (CAS CATO-C4X-121242)
- Ceftazidime Impurity 105 (CAS CATO-C4X-1212105)
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- 4-Methyl-4-(trifluoromethoxy)piperidine (CAS 2229543-33-1)
- 2-Amino-7-hydroxy-3-(2-methoxyphenyl)-4H-chromen-4-one (CAS 929429-04-9)
- Tirzepatide Impurity 34 (CAS CATO-C4X-324034)
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