Indobufen Impurity 87 CAS CATO-C4X-179287
| CAS No. | CATO-C4X-179287 |
| Molecular Formula | C11H13NO3 |
| Molecular Weight | 207.23 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Indobufen Impurity 87 (CAS CATO-C4X-179287) is a certified pharmaceutical impurity reference standard with the molecular formula C11H13NO3 and a molecular weight of 207.23 g/mol.
Indobufen Impurity 87 (C11H13NO3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, 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).
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 | C11H13NO3 |
| Molecular Weight | 207.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Indobufen Standards
- Indobufen Impurity 45 (CAS CATO-C4X-179245)
- Indobufen Impurity 46 (CAS CATO-C4X-179246)
- Indobufen Impurity 52 (CAS 57960-84-6)
- Indobufen Impurity 74 (CAS CATO-C4X-179274)
- Indobufen Impurity 39 (CAS 13048-83-4)
- Indobufen Impurity 73 (CAS CATO-C4X-179273)
- Indobufen Impurity 85 (CAS CATO-C4X-179285)
- Indobufen Impurity N9 (CAS 858006-96-9)
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