Ribavirin Impurity 37 CAS CATO-C4X-141337
| CAS No. | CATO-C4X-141337 |
| Molecular Formula | C4H4N4O3 |
| Molecular Weight | 156.10 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 37.
Ribavirin Impurity 37 (CAS CATO-C4X-141337) is a certified pharmaceutical impurity reference standard with the molecular formula C4H4N4O3 and a molecular weight of 156.10 g/mol.
Ribavirin Impurity 37 (C4H4N4O3) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Ribavirin Impurity 37 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 | C4H4N4O3 |
| Molecular Weight | 156.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Nitrogen Atoms | 4 |
Related Ribavirin Standards
- Ribavirin Impurity 27 (CAS 1319257-87-8)
- Ribavirin Impurity 56 (CAS CATO-C4X-141356)
- Ribavirin Impurity 39 (CAS CATO-C4X-141339)
- Ribavirin Impurity 60 (CAS 21733-05-1)
- Ribavirin Impurity 48 (CAS 613-83-2)
- Ribavirin Impurity V (CAS 89797-67-1)
- Ribavirin Impurity 38 (CAS 5614-64-2)
- Ribavirin impurity 59 (CAS 18905-29-8)
Recommended Standards
- Metronidazole Impurity 31 (CAS CATO-C4X-140531)
- Acipimox Impurity 10 (CAS CATO-C4X-186610)
- Ornidazole impurity 33 (CAS CATO-C4X-133133)
- Nifuroxime (CAS 555-15-7)
- Dasatinib Impurity 66 (CAS 2468737-89-3)
- Cefotaxime Impurity 52 (CAS 57254-16-7)
- Formoterol Impurity 94 (CAS CATO-C4X-152594)
- 7-(Octan-2-yl)quinolin-8-ol (CAS 88015-72-9)
- (3S,6S)-3-Methyl-6-(prop-1-en-2-yl)dec-9-en-1-yl acetate (CAS 67601-10-9)
- Ethyl 2-(4-fluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate (CAS 1198615-88-1)
- 4,6-Dimethoxy-3-(p-tolyl)benzofuran (CAS 922140-74-7)
- Lecithin Hydrogenated (CAS 92128-87-5)
- 5-Butyl-2-(4-ethylphenyl)pyrimidine (CAS 64835-59-2)
- Semaglutide impurity 01 (CAS 1998701-31-7)
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