Cefuroxime Impurity 91 CAS CATO-C4X-124591
| CAS No. | CATO-C4X-124591 |
| Molecular Formula | C15H17N5O7S2 |
| Molecular Weight | 443.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Cefuroxime Impurity 91 (CAS CATO-C4X-124591), a pharmacopoeial impurity reference standard (molecular formula C15H17N5O7S2, MW 443.45 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cefuroxime Impurity 91 (C15H17N5O7S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 443.45 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Cefuroxime Impurity 91 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 | C15H17N5O7S2 |
| Molecular Weight | 443.45 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefuroxime Standards
- Cefuroxime Impurity 96 (CAS CATO-C4X-124596)
- Cefuroxime Impurity 11 (CAS CATO-C4X-124511)
- Cefuroxime Impurity 100 (CAS CATO-C4X-1245100)
- Cefuroxime Impurity 12 (CAS 929531-94-2)
- Cefuroxime Oxide Impurity 1 (CAS CATO-C4X-124515)
- Cefuroxime Oxide Impurity 2 (CAS CATO-C4X-124516)
- Cefuroxime Impurity 70 (CAS CATO-C4X-124570)
- Cefuroxime impurity 106 (CAS CATO-C4X-1245106)
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