Cefotaxime Impurity 67 CAS CATO-C4X-120167
| CAS No. | CATO-C4X-120167 |
| Molecular Formula | C31H44N6O11S2 |
| Molecular Weight | 740.84 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Cefotaxime Impurity 67 (CAS CATO-C4X-120167) is a certified pharmaceutical impurity reference standard with the molecular formula C31H44N6O11S2 and a molecular weight of 740.84 g/mol.
Based on its molecular formula C31H44N6O11S2, Cefotaxime Impurity 67 contains a nitrogen-containing heterocyclic scaffold, 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 740.84 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C31H44N6O11S2 |
| Molecular Weight | 740.84 g/mol |
| Purity | >95% |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Cefotaxime Standards
- Cefotaxime Impurity 71 (CAS CATO-C4X-120171)
- Cefotaxime Impurity 35 (CAS CATO-C4X-120135)
- Cefotaxime Impurity 72 (CAS CATO-C4X-120172)
- Cefotaxime Impurity 63 (CAS CATO-C4X-120163)
- Cefotaxime Impurity 62 (CAS CATO-C4X-120162)
- Cefotaxime Impurity 84 (CAS CATO-C4X-120184)
- Cefotaxime Impurity 85 (CAS CATO-C4X-120185)
- Cefotaxime Impurity 78 (CAS CATO-C4X-120178)
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