Ceftazidime Impurity 89 CAS CATO-C4X-121289
| CAS No. | CATO-C4X-121289 |
| Molecular Formula | C12H8N4O2S3 |
| Molecular Weight | 336.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ceftazidime Impurity 89 (CAS CATO-C4X-121289) is a certified pharmaceutical impurity reference standard with the molecular formula C12H8N4O2S3 and a molecular weight of 336.41 g/mol.
The molecular framework of Ceftazidime Impurity 89 (C12H8N4O2S3) is characterized by a nitrogen-containing heterocyclic scaffold, 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 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.
CATO manufactures Ceftazidime Impurity 89 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 | C12H8N4O2S3 |
| Molecular Weight | 336.41 g/mol |
| Purity | ≥90% |
| Storage | Store at 2-8°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 3 |
Related Ceftazidime Standards
- Ceftazidime Impurity 27 (CAS 83654-89-1)
- Ceftazidime Impurity 47 (CAS 199923-06-3)
- Ceftazidime Impurity 16 (CAS 86299-47-0)
- Ceftazidime Impurity 46 (CAS 134203-50-2)
- Ceftazidime Impurity 58 (CAS CATO-C4X-121258)
- Ceftazidime Impurity 85 (CAS CATO-C4X-121285)
- Ceftazidime Impurity 50 (CAS 1924627-99-5)
- Ceftazidime EP Impurity G (CAS 194241-83-3)
Recommended Standards
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- Terbutaline Impurity 28 (CAS 28924-25-6)
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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