Valaciclovir EP Impurity R CAS 142963-60-8
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 142963-60-8 |
| Molecular Formula | C13H20N6O4 |
| Molecular Weight | 324.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Valaciclovir EP Impurity R (CAS 142963-60-8) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C13H20N6O4. Molecular weight: 324.34 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C13H20N6O4 |
| Molecular Weight | 324.34 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 6 |
Related Valaciclovir Standards
- Valaciclovir EP Impurity R (CAS 142963-59-5)
- Valaciclovir EP Impurity J (CAS 142963-63-1)
- Valaciclovir EP Impurity C (CAS 1346747-65-6)
- Valaciclovir Impurity 37 (CAS CATO-C4X-124837)
- Valaciclovir Impurity 42 (CAS 73504-31-1)
- Valaciclovir Impurity 36 (CAS 19542-54-2)
- Valaciclovir EP Impurity M (CAS 847670-62-6)
- Valaciclovir EP Impurity D (CAS 1346747-69-0)
Recommended Standards
- tert-Butyldimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclopent-2-en-1-yl)oxy)silane (CAS 2304663-74-7)
- Valacyclovir (CAS 124832-26-4)
- Tert-butyl 4-(6-amino-5-nitropyrimidin-4-yl)piperazine-1-carboxylate (CAS 245450-04-8)
- Varenicline Impurity 55 (CAS CATO-C4X-196255)
- Rabeprazole Impurity 43 (CAS 209914-31-8（free base）)
- 2-(prop-2-yn-1-yl)-1,2,3,4-tetrahydroisoquinoline-1,3-dione (CAS 410538-30-6)
- 2,4,6-Tris(4-chlorophenyl)-1,3,5-triazine (CAS 3114-54-3)
- 3-Bromo-1-methyl-1H-indole-6-sulfonyl chloride (CAS 1423161-84-5)
- DL-Aspartic acid potassium salt (CAS 14434-35-6)
- 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 13829788188 / jacky.chen@cato-chem.com