Ritonavir EP Impurity S CAS 2084828-53-3
| CAS No. | 2084828-53-3 |
| Molecular Formula | C52H61N7O8S2 |
| Molecular Weight | 976.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ritonavir EP Impurity S.
Ritonavir EP Impurity S (CAS 2084828-53-3) is a certified pharmaceutical impurity reference standard with the molecular formula C52H61N7O8S2 and a molecular weight of 976.21 g/mol.
Ritonavir EP Impurity S (C52H61N7O8S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Ritonavir EP Impurity S 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.
Physical & Chemical Properties
| Molecular Formula | C52H61N7O8S2 |
| Molecular Weight | 976.21 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 |
| Degree of Unsaturation (DBE) | 26.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 7 |
| Sulfur Atoms | 2 |
Related Ritonavir Standards
- Ritonavir Impurity 41 (CAS CATO-C4X-175141)
- Ritonavir EP Impurity U (CAS CATO-C4X-175126)
- Ritonavir EP Impurity P (CAS 2804644-96-8)
- Ritonavir EP Impurity T (CAS 869368-48-9)
- Ritonavir EP Impurity G (CAS 2034136-66-6)
- Ritonavir EP Impurity E (CAS 176655-56-4)
- Ritonavir-D10 (CAS 155213-67-5 (unlabeled))
- Ritonavir-d6 (CAS 155213-67-5(unlabelled))
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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