Dotinurad Impurity 168 CAS CATO-C4X-2494168
| CAS No. | CATO-C4X-2494168 |
| Molecular Formula | C7H7NO3S |
| Molecular Weight | 185.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Dotinurad Impurity 168 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.
As a process- or degradation-related impurity, Dotinurad Impurity 168 (CAS CATO-C4X-2494168, C7H7NO3S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Dotinurad Impurity 168 (C7H7NO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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.
Physical & Chemical Properties
| Molecular Formula | C7H7NO3S |
| Molecular Weight | 185.20 g/mol |
| Purity | ≥95% |
| 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 |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dotinurad Standards
- Dotinurad Impurity 171 (CAS 50910-59-3)
- Dotinurad Impurity 188 (CAS CATO-C4X-2494188)
- Dotinurad Impurity 154 (CAS CATO-C4X-2494154)
- Dotinurad Impurity 258 (CAS CATO-C4X-2494258)
- Dotinurad Impurity 81 (CAS 82848-00-8)
- Dotinurad Impurity 98 (CAS CATO-C4X-249498)
- Dotinurad Impurity 99 (CAS CATO-C4X-249499)
- Dotinurad Impurity 257 (CAS CATO-C4X-2494257)
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