Pranoprofen Impurity 66 CAS CATO-C4X-181166
| CAS No. | CATO-C4X-181166 |
| Molecular Formula | C15H11NO4 |
| Molecular Weight | 269.25 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.
As a process- or degradation-related impurity, Pranoprofen Impurity 66 (CAS CATO-C4X-181166, C15H11NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C15H11NO4, Pranoprofen Impurity 66 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 269.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C15H11NO4 |
| Molecular Weight | 269.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Pranoprofen Standards
- Pranoprofen Impurity 2 (CAS 52549-19-6)
- Pranoprofen Impurity 7 (CAS CATO-C4X-18117)
- Pranoprofen Impurity 12 (CAS CATO-C4X-181112)
- Pranoprofen Impurity 5 (CAS 145986-74-9)
- Pranoprofen Impurity 9 (CAS CATO-C4X-18119)
- Pranoprofen Impurity 14 (CAS CATO-C4X-181114)
- Pranoprofen Impurity 15 (CAS CATO-C4X-181115)
- Pranoprofen Impurity 21 (CAS CATO-C4X-181121)
Recommended Standards
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- Pretomanid Impurity 17 (CAS CATO-C4X-260617)
- Rosuvastatin Impurity 25 (CAS 289042-11-1)
- Fluphenazine EP Impurity B (CAS 1476-79-5)
- Empagliflozin Impurity 67 (CAS CATO-C4X-106567)
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