Ritonavir EP Impurity B CAS 765875-58-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 765875-58-9 |
| Molecular Formula | C28H36N4O4S |
| Molecular Weight | 524.67 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Ritonavir EP Impurity B (CAS 765875-58-9) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C28H36N4O4S. Molecular weight: 524.67 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C28H36N4O4S |
| Molecular Weight | 524.67 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Ritonavir Standards
- Ritonavir EP Impurity J (CAS 162849-95-8)
- Ritonavir EP Impurity K (CAS 1010809-39-8)
- Ritonavir EP Impurity F (CAS 1010809-61-6)
- Ritonavir Impurity 61 (CAS CATO-C4X-175161)
- Ritonavir EP Impurity D (CAS 144142-33-6)
- Ritonavir EP Impurity H (CAS 1010809-43-4)
- Ritonavir EP Impurity C (CAS 1010808-43-1)
- Ritonavir Impurity 60 (CAS 2454100-44-6)
Recommended Standards
- Biotin EP Impurity F (CAS 101469-35-6)
- Allyl (6aS)-6-((tert-butyldimethylsilyl)oxy)-3-hydroxy-2-methoxy-14-oxo-6,6a,7,12-tetrahydrobenzo[5,6][1,4]diazepino[1,2-b]isoquinoline-5(14H)-carboxylate (CAS 1964490-03-6)
- Lurasidone Sulfone (CAS 1644295-09-9)
- Pregabalin Impurity 70 (CAS 181289-39-4)
- Lornoxicam Impurity 81 (CAS 2763743-17-3)
- (4,6-Dichloropyrimidin-2-yl)methanol (CAS 1244949-68-5)
- 4-Bromo-5-methyl-1-(trimethylsilyl)hex-1-yn-3-one (CAS 1461715-58-1)
- 6-(Diethylamino)pyridazine-4-carboxylic acid (CAS 1987340-91-9)
- Sodium 6,8-dimercaptooctanoate (CAS 36915-02-3)
- Hexapeptide-11 (CAS 100684-36-4)
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 13829788188 / jacky.chen@cato-chem.com