Ritonavir EP Impurity L CAS 256328-82-2
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 256328-82-2 |
| Molecular Formula | C33H43N5O4S |
| Molecular Weight | 605.79 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Ritonavir EP Impurity L (CAS 256328-82-2) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C33H43N5O4S. Molecular weight: 605.79 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C33H43N5O4S |
| Molecular Weight | 605.79 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Ritonavir Standards
- Ritonavir Impurity A RRT 5.78 (CAS 959351-57-6)
- Ritonavir Impurity 45 (CAS 1010809-50-3)
- Ritonavir EP Impurity H (CAS 1010809-43-4)
- Ritonavir Impurity 46 (CAS 1010809-54-7)
- Ritonavir EP Impurity D (CAS 144142-33-6)
- Ritonavir Impurity 61 (CAS CATO-C4X-175161)
- Ritonavir EP Impurity F (CAS 1010809-61-6)
- Ritonavir EP Impurity J (CAS 162849-95-8)
Recommended Standards
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- 2-(Propylthio)-1-(o-tolyl)ethan-1-one (CAS 1157366-88-5)
- Endo-Pro36-Tirzepatide (CAS CATO-CPTD788688)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 13829788188 / jacky.chen@cato-chem.com