Valaciclovir Impurity 41 CAS CATO-C4X-124841
| CAS No. | CATO-C4X-124841 |
| Molecular Formula | C21H23NO6 |
| Molecular Weight | 385.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Valaciclovir Impurity 41 (CAS CATO-C4X-124841, C21H23NO6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Valaciclovir Impurity 41 (C21H23NO6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 385.41 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C21H23NO6 |
| Molecular Weight | 385.41 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Valaciclovir Standards
- Valaciclovir Impurity 55 (CAS CATO-C4X-124855)
- Valaciclovir Impurity 43 (CAS CATO-C4X-124843)
- Valaciclovir EP Impurity K (CAS CATO-C4X-124811)
- 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
- Posaconazole impurity 248 (CAS CATO-C4X-1208248)
- 198560-38-2 1H-Indole-1,2-dicarboxylic acid, 2,3-dihydro-, 1-(9H-fluoren-9-ylmethyl) ester, (2S)- (CAS 198560-38-2)
- Mivacurium chloride Impurity 40 (CAS CATO-C4X-137540)
- Poly(oxy-1,2-ethanediyl),α-(carboxymethyl)-ω-[2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]ethoxy]- (CAS 675606-79-8)
- Buspirone EP Impurity H Oxalate (CAS 2724726-70-7)
- Guaifenesin EP Impurity D (CAS 16929-60-5)
- Linezolid Impurity 22 (CAS 174649-09-3)
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- 1817AE 3-(Benzyloxy)piperidine hydrochloride 37098-74-1 C12H18ClNO (CAS 37098-74-1)
- 6-Chloropyridazine-3-carboxamide (CAS 66346-83-6)
- Semaglutide Impurity 165 (CAS CATO-C4X-2226165)
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