Ritonavir EP Impurity I CAS 165315-26-4
| CAS No. | 165315-26-4 |
| Molecular Formula | C36H46N6O5S2 |
| Molecular Weight | 706.92 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ritonavir EP Impurity I under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
As a process- or degradation-related impurity, Ritonavir EP Impurity I (CAS 165315-26-4, C36H46N6O5S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C36H46N6O5S2, Ritonavir EP Impurity I 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 706.92 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.
Physical & Chemical Properties
| Molecular Formula | C36H46N6O5S2 |
| Molecular Weight | 706.92 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Ritonavir Standards
- Ritonavir Dehydro (CAS 1156504-13-0)
- Ritonavir (CAS 155213-67-5)
- Ritonavir Geo-isomer (CAS 959315-21-0)
- Ritonavir EP Impurity N (CAS 202816-62-4)
- Ritonavir EP Impurity O (CAS 1414933-81-5)
- Ritonavir EP Impurity Q (CAS 1414933-82-6)
- Ritonavir EP Impurity R (CAS 1414933-80-4)
- Ritonavir impurity 48 (CAS CATO-C4X-175148)
Recommended Standards
- 9,9′-Spirobi[9H-fluorene]-2,2′-diamine, N2,N2,N2′,N2′-tetrakis(4-methylphenyl)- (CAS 515833-76-8)
- Eledoisin Related Peptide (CAS 2990-43-4)
- Abemaciclib Impurity 45 (CAS CATO-C4X-293745)
- N2-Acetyl-L-lysyl-L-isoleucyl-L-phenylalanyl-L-methionyl-L-lysinamide (CAS 156162-44-6)
- Metoclopramide Impurity 90 (CAS CATO-C4X-141590)
- N-Nitroso Tofacitinib Impurity 185 (CAS CATO-C4X-1079185)
- Rivaroxaban Impurity 55 (CAS 1257527-98-2)
- 9-(beta-D-ribofuranosyl)-6-(furan-2-yl)purine (CAS 352025-81-1)
- 5-(2-Nitrophenyl)-1H-imidazol-2-amine (CAS 1141669-75-1)
- U-50488 hydrochloride (CAS 67197-96-0)
- 2-(4-Bromophenyl)-2-(4-(4-fluorobenzoyl)phenyl)acetonitrile (CAS 339115-52-5)
- 1-(Butan-2-yl)-1H-pyrazol-4-amine (CAS 1152901-10-4)
- (3R,4S,5R)-3,4-Dihydroxy-5-methyltetrahydrofuran-2-yl dihydrogen phosphate (CAS 86708-78-3)
- Semaglutide impurity 267 (CAS CATO-C4X-2226267)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com