Faropenem Impurity 33 CAS CATO-C4X-128933
| CAS No. | CATO-C4X-128933 |
| Molecular Formula | C11H14O4S |
| Molecular Weight | 242.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Faropenem Impurity 33 (CAS CATO-C4X-128933, C11H14O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C11H14O4S, Faropenem Impurity 33 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 242.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C11H14O4S |
| Molecular Weight | 242.29 g/mol |
| Purity | >90% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Faropenem Standards
- Faropenem Impurity 40 (CAS CATO-C4X-128940)
- Faropenem Impurity 6 (CAS CATO-C4X-12896)
- Faropenem Impurity 65 (CAS CATO-C4X-128965)
- Faropenem Impurity 80 (CAS CATO-C4X-128980)
- Faropenem Impurity 61 (CAS CATO-C4X-128961)
- Faropenem Impurity 13 (CAS CATO-C4X-128913)
- Faropenem Impurity 3 (CAS CATO-C4X-12893)
- Faropenem Impurity 64 (CAS CATO-C4X-128964)
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