Riluzole Impurity 22 CAS CATO-C4X-200922
| CAS No. | CATO-C4X-200922 |
| Molecular Formula | C11H9F3N4O3S |
| Molecular Weight | 334.27 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Riluzole Impurity 22 (CAS CATO-C4X-200922, C11H9F3N4O3S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Riluzole Impurity 22 (C11H9F3N4O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine 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.
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.
As a certified reference material (CRM), Riluzole Impurity 22 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 | C11H9F3N4O3S |
| Molecular Weight | 334.27 g/mol |
| Purity | 97%+ |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Riluzole Standards
- Riluzole Impurity 1 (CAS 88149-49-9)
- Riluzole Impurity 4 (CAS 144631-82-3)
- Riluzole Impurity 14 (CAS CATO-C4X-200914)
- Riluzole Impurity 12 (CAS CATO-C4X-200912)
- Riluzole Impurity 7 (CAS 1456696-94-8)
- Riluzole Impurity 25 (CAS 442665-84-1)
- Riluzole Impurity 27 (CAS 2273706-77-5)
- Riluzole Impurity 26 (CAS CATO-C4X-200926)
Recommended Standards
- Loxoprofen impurity 115 (CAS CATO-C4X-1488115)
- RDN-Th-Br (CAS 1087689-75-5)
- N-((S)-1-(4-Bromo-2-methoxyphenyl)ethyl)-2-methylpropane-2-sulfinamide (CAS 2378054-20-5)
- 2-Acetamido-N-(2,6-dioxopiperidin-3-yl)-6-nitrobenzamide (CAS 1620018-94-1)
- Fosfomycin Impurity 65 (CAS 15205-62-6)
- Avibactam Impurity 25 (CAS 1501980-29-5)
- Lasmiditan Impurity 52 (CAS CATO-C4X-247852)
- Saclofen (CAS 125464-42-8)
- 2,6-Dihydroxy-1-naphthaldehyde (CAS 20258-98-4)
- di-tert-butyl 9-oxo-3,7-diaza-bicyclo[3.3.1]nonane-3,7-dicarboxylate (CAS 1664366-95-3)
- Bis(trifluoro-2,4-pentanedionato)magnesium(ii) dihydrate (CAS 240131-46-8)
- Butyl Glyoxylate (CAS 6295-06-3)
- 2-(3-Methylthiophen-2-yl)propan-1-amine (CAS 1343109-06-7)
- Semaglutide impurity 208 (CAS CATO-C4X-2226208)
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