Valaciclovir EP Impurity K CAS CATO-C4X-124811
| CAS No. | CATO-C4X-124811 |
| Molecular Formula | C14H16N10O4 |
| Molecular Weight | 388.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Valaciclovir EP Impurity K (C14H16N10O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 388.34 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a process- or degradation-related impurity, Valaciclovir EP Impurity K (CAS CATO-C4X-124811, C14H16N10O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Valaciclovir EP Impurity K meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H16N10O4 |
| Molecular Weight | 388.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >90% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 10 |
Related Valaciclovir Standards
- Valaciclovir Impurity 41 (CAS CATO-C4X-124841)
- Valaciclovir Impurity 55 (CAS CATO-C4X-124855)
- Valaciclovir Impurity 43 (CAS CATO-C4X-124843)
- Valaciclovir Impurity 38 (CAS CATO-C4X-124838)
- Valaciclovir EP Impurity D (CAS 1346747-69-0)
- Valaciclovir EP Impurity M (CAS 847670-62-6)
- Valaciclovir Impurity 36 (CAS 19542-54-2)
- Valaciclovir Impurity 37 (CAS CATO-C4X-124837)
Recommended Standards
- Aciclovir EP Impurity J (CAS 166762-90-9)
- 6-Maleimidocaproic acid sulfo-NHS (CAS 103848-61-9)
- Aciclovir EP Impurity I (CAS 1797832-75-7)
- 1-(Bis(4-(trifluoromethyl)phenyl)methyl)piperazine (CAS 104523-09-3)
- Larotrectinib impurity 8 (CAS CATO-C4X-23808)
- Blonanserin Impurity 44 (CAS CATO-C4X-111044)
- Dobutamine Impurity 17 (CAS CATO-C4X-129817)
- Methyl 3-[(4-bromo-1h-pyrazol-1-yl)methyl]benzoate (CAS 1005628-24-9)
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- Dimethyl 3,4,5,6-tetrafluorophthalate (CAS 1024-59-5)
- Des-His(1)-Semaglutide (CAS CATO-C4X-2226216)
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