Valaciclovir Impurity 42 CAS 73504-31-1
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 73504-31-1 |
| Molecular Formula | C20H23NO4 |
| Molecular Weight | 341.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Valaciclovir Impurity 42 (CAS 73504-31-1) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C20H23NO4. Molecular weight: 341.40 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C20H23NO4 |
| Molecular Weight | 341.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 1 |
Related Valaciclovir Standards
- Valaciclovir Impurity 37 (CAS CATO-C4X-124837)
- Valaciclovir EP Impurity J (CAS 142963-63-1)
- Valaciclovir EP Impurity C (CAS 1346747-65-6)
- Valaciclovir Impurity 36 (CAS 19542-54-2)
- Valaciclovir EP Impurity M (CAS 847670-62-6)
- Valaciclovir EP Impurity D (CAS 1346747-69-0)
- Valaciclovir EP Impurity R (CAS 142963-59-5)
- Valaciclovir EP Impurity R (CAS 142963-60-8)
Recommended Standards
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- Phloroglucinol impurity 44 (CAS 23957-21-3)
- Rifapentine impurity 27 (CAS CATO-C4X-195927)
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- [(3-aminopropyl)sulfanyl]carbonitrile hydrobromide (CAS 1803600-03-4)
- N-(2-(tert-Butyl)-2,6-dihydro-4H-thieno[3,4-c]pyrazol-3-yl)-5-(furan-2-yl)isoxazole-3-carboxamide (CAS 1219912-79-4)
- Vialox Peptide(Pentapeptide-3) (CAS 135679-88-8)
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