Flurbiprofen Impurity 169 CAS CATO-C4X-1444169
| CAS No. | CATO-C4X-1444169 |
| Molecular Formula | C25H18F2 |
| Molecular Weight | 356.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
As a process- or degradation-related impurity, Flurbiprofen Impurity 169 (CAS CATO-C4X-1444169, C25H18F2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Flurbiprofen Impurity 169 (C25H18F2) contains fluorine substitution, a polycyclic aromatic system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C25H18F2 |
| Molecular Weight | 356.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 127 (CAS CATO-C4X-1444127)
- Flurbiprofen Impurity 110 (CAS CATO-C4X-1444110)
- Flurbiprofen Impurity 151 (CAS 836607-32-0)
- Flurbiprofen Impurity 128 (CAS 1515948-47-6)
- Flurbiprofen Impurity 94 (CAS 121734-75-6)
- Flurbiprofen Impurity 14 (CAS CATO-C4X-144414)
- Flurbiprofen Impurity 1 (CAS 42771-81-3)
- Flurbiprofen Impurity 29 (CAS 1206101-29-2)
Recommended Standards
- Budesonide Impurity 58 (CAS CATO-C4X-138958)
- Prednisone EP Impurity C (CAS 70522-55-3)
- Gingerenone A (CAS 128700-97-0)
- Sulindac Impurity 16 (CAS CATO-C4X-293016)
- Phenylbutyrate Impurity 12 (CAS CATO-C4X-258312)
- Atrasentan Impurity 143 (CAS 1058349-56-6)
- Salcaprozate Impurity 7 (CAS CATO-C4X-25077)
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