Ribavirin Impurity 60 CAS 21733-05-1
| CAS No. | 21733-05-1 |
| Molecular Formula | C4H4ClN3O2 |
| Molecular Weight | 161.55 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Ribavirin Impurity 60 (CAS 21733-05-1), a certified reference material (molecular formula C4H4ClN3O2, MW 161.55 g/mol) for analytical method development and quality control.
Ribavirin Impurity 60 (C4H4ClN3O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), Ribavirin Impurity 60 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 | C4H4ClN3O2 |
| Molecular Weight | 161.55 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ribavirin Standards
- Ribavirin Impurity 39 (CAS CATO-C4X-141339)
- Ribavirin Impurity 56 (CAS CATO-C4X-141356)
- Ribavirin Impurity 27 (CAS 1319257-87-8)
- Ribavirin Impurity 37 (CAS CATO-C4X-141337)
- Ribavirin Impurity 38 (CAS 5614-64-2)
- Ribavirin impurity 59 (CAS 18905-29-8)
- Ribavirin Impurity 48 (CAS 613-83-2)
- Ribavirin Impurity V (CAS 89797-67-1)
Recommended Standards
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- Minoxidil Impurity 70 (CAS CATO-C4X-170070)
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- 1-(Pyridin-2-yl)pent-4-yn-1-ol (CAS 1342577-93-8)
- Dimethyl 4-(methoxymethyl)-1H-pyrazole-3,5-dicarboxylate (CAS 2389007-95-6)
- N-(2-aminopyridin-3-yl)acetamide hydrochloride (CAS 1461706-21-7)
- 3-(4-Bromophenyl)-1-methyl-5-phenylpyridazin-4(1H)-one (CAS 59591-36-5)
- 1-(2,3-Dihydrobenzofuran-5-yl)-2-phenylethanone (CAS 115063-20-2)
- 1-(Pyridin-3-yl)ethane-1-sulfonamide (CAS 1248932-15-1)
- Osimertinib Impurity N4 (CAS 1956306-73-2)
- MOTS-c Peptide (CAS 1627580-64-6)
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 18665070610 / Nicole.chen@cato-chem.com