Ceftazidime Impurity 97 CAS CATO-C4X-121297
| CAS No. | CATO-C4X-121297 |
| Molecular Formula | C16H14N4O4S3 |
| Molecular Weight | 422.50 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Ceftazidime Impurity 97 is closely related to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Ceftazidime Impurity 97 (CAS CATO-C4X-121297) is a certified pharmaceutical impurity reference standard with the molecular formula C16H14N4O4S3 and a molecular weight of 422.50 g/mol.
Based on its molecular formula C16H14N4O4S3, Ceftazidime Impurity 97 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 422.50 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), Ceftazidime Impurity 97 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 | C16H14N4O4S3 |
| Molecular Weight | 422.50 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 3 |
Related Ceftazidime Standards
- Ceftazidime impurity 126 (CAS CATO-C4X-1212126)
- Ceftazidime Impurity 96 (CAS CATO-C4X-121296)
- Ceftazidime Impurity 43 (CAS 2647895-25-6)
- Ceftazidime Impurity 30 (CAS CATO-C4X-121230)
- Ceftazidime Impurity 84 (CAS CATO-C4X-121284)
- Ceftazidime impurity 123 (CAS CATO-C4X-1212123)
- Ceftazidime Impurity 20 (CAS CATO-C4X-121220)
- Ceftazidime Impurity 17 (CAS CATO-C4X-121217)
Recommended Standards
- Salbutamol Impurity 179 (CAS CATO-C4X-1176179)
- Avibactam Impurity 117 (CAS CATO-C4X-1348117)
- Acotiamide Impurity 45 (CAS CATO-C4X-111445)
- Bumetanide Impurity 132 (CAS CATO-C4X-1986132)
- Mitiglinide impurity 24 (CAS CATO-C4X-116124)
- Venetoclax Impurity 150 (CAS CATO-C4X-2495150)
- Lercanidipine Impurity 60 (CAS 100427-51-8)
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