Faropenem Impurity 20 CAS CATO-C4X-128920
| CAS No. | CATO-C4X-128920 |
| Molecular Formula | C21H27ClN2O6S2 |
| Molecular Weight | 503.03 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Faropenem Impurity 20 (C21H27ClN2O6S2) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a process- or degradation-related impurity, Faropenem Impurity 20 (CAS CATO-C4X-128920, C21H27ClN2O6S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Faropenem Impurity 20 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 | C21H27ClN2O6S2 |
| Molecular Weight | 503.03 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Faropenem Standards
- Faropenem Impurity 84 (CAS CATO-C4X-128984)
- Faropenem Impurity 17 (CAS CATO-C4X-128917)
- Faropenem Impurity 14 (CAS CATO-C4X-128914)
- Faropenem Impurity 19 (CAS CATO-C4X-128919)
- Faropenem Impurity 75 (CAS CATO-C4X-128975)
- Faropenem Impurity 11 (CAS 120705-67-1)
- Faropenem Impurity 57 (CAS CATO-C4X-128957)
- Faropenem Impurity 88 (CAS CATO-C4X-128988)
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