Ritonavir Impurity 36 CAS CATO-C4X-175136
| CAS No. | CATO-C4X-175136 |
| Molecular Formula | C25H27N3O4S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Ritonavir Impurity 36 (CAS CATO-C4X-175136, C25H27N3O4SHCl) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C25H27N3O4SHCl, Ritonavir Impurity 36 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 502.03 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Ritonavir Impurity 36 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 | C25H27N3O4S HCl |
| Molecular Weight | 502.03 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ritonavir Standards
- Ritonavir EP Impurity C (CAS 1010808-43-1)
- Ritonavir EP Impurity K (CAS 1010809-39-8)
- Ritonavir EP Impurity H (CAS 1010809-43-4)
- Ritonavir Impurity 45 (CAS 1010809-50-3)
- Ritonavir Impurity 46 (CAS 1010809-54-7)
- Ritonavir EP Impurity F (CAS 1010809-61-6)
- Ritonavir Dehydro (CAS 1156504-13-0)
- Ritonavir-13C3 (CAS 1217673-23-8)
Recommended Standards
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- Cyclopropyl(naphthalen-1-yl)methanamine hydrochloride (CAS 58271-60-6)
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