Ribavirin Impurity 47 CAS 5682-25-7
| CAS No. | 5682-25-7 |
| Molecular Formula | C10H13N5O4 |
| Molecular Weight | 267.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Ribavirin Impurity 47.
Ribavirin Impurity 47 (CAS 5682-25-7) is a certified pharmaceutical impurity reference standard with the molecular formula C10H13N5O4 and a molecular weight of 267.24 g/mol.
Ribavirin Impurity 47 (C10H13N5O4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C10H13N5O4 |
| Molecular Weight | 267.24 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1958 |
| Nitrogen Atoms | 5 |
Related Ribavirin Standards
Recommended Standards
- Bendamustine Impurity 34 (CAS CATO-C4X-127134)
- Zidovudine Impurity 13 (CAS 123606-70-2)
- Valaciclovir EP Impurity I (CAS 102728-64-3)
- Cytarabine Impurity 15 (CAS 60827-79-4)
- Risperidone cis-N-oxide Impurity (CAS CATO-C4X-11111)
- Tofacitinib Impurity 7 (CAS 1616761-00-2)
- Dalbavancin Impurity 10 (CAS CATO-C4X-160210)
- Mirogabalin Impurity 138 (CAS CATO-C4X-2924138)
- 2,3,2',4'-Tetrahydroxychalcone (CAS 88191-19-9)
- Corylin (CAS 53947-92-5)
- Glycerol Impurity 15 (CAS CATO-C4X-217115)
- 5-Chloro-1-(3-fluorophenyl)-N,N-dimethyl-1H-pyrazole-4-carboxamide (CAS 98533-48-3)
- Methyl 4-(3-(2-(methylamino)ethyl)-1,2,4-oxadiazol-5-yl)benzoate hydrochloride (CAS 1160245-52-2)
- Semaglutide impurity 70 (CAS CATO-C4X-222670)
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