Valaciclovir EP Impurity E Enantiomer (Valacyclovir USP Related Compound E Enantiomer) CAS 124832-32-2
| CAS No. | 124832-32-2 |
| Molecular Formula | C21H26N6O6 |
| Molecular Weight | 458.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Valaciclovir EP Impurity E Enantiomer (Valacyclovir USP Related Compound E Enantiomer) (C21H26N6O6) is characterized by a flavonoid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Valaciclovir EP Impurity E Enantiomer (Valacyclovir USP Related Compound E Enantiomer) (CAS 124832-32-2) is a high-purity analytical reference standard with the molecular formula C21H26N6O6 and a molecular weight of 458.47 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C21H26N6O6 |
| Molecular Weight | 458.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 6 |
Related Valaciclovir Standards
- Valaciclovir Impurity 29 (CAS CATO-C4X-124829)
- Valaciclovir EP Impurity E (CAS 124832-31-1)
- Valaciclovir Impurity 44 (CAS CATO-C4X-124844)
- Valaciclovir Impurity 40 (CAS CATO-C4X-124840)
- Valaciclovir EP Impurity Q (CAS CATO-C4X-124817)
- Valaciclovir EP Impurity N (CAS 2519847-26-6)
- Valaciclovir Impurity 38 (CAS CATO-C4X-124838)
- Valaciclovir EP Impurity K (CAS CATO-C4X-124811)
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