Flurbiprofen Impurity 163 CAS 374936-00-2
| CAS No. | 374936-00-2 |
| Molecular Formula | C14H14O |
| Molecular Weight | 198.26 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.
Flurbiprofen Impurity 163 (CAS 374936-00-2) is a certified pharmaceutical impurity reference standard with the molecular formula C14H14O and a molecular weight of 198.26 g/mol.
Owing to a hydroxyl group, an ether linkage, a polycyclic aromatic system, Flurbiprofen Impurity 163 is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 198.26 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C14H14O |
| Molecular Weight | 198.26 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 74 (CAS CATO-C4X-144474)
- Flurbiprofen Impurity 12 (CAS 55258-76-9)
- Flurbiprofen Impurity 82 (CAS 37847-52-2)
- Flurbiprofen Impurity 44 (CAS CATO-C4X-144444)
- Flurbiprofen Impurity 9 (CAS 477860-13-2)
- Flurbiprofen Impurity 85 (CAS CATO-C4X-144485)
- Flurbiprofen Impurity 61 (CAS 95037-98-2)
- Flurbiprofen Impurity 90 (CAS 145983-05-7)
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- tert-butyl 3,3-dimethyl-1,2,3,4-tetrahydroquinoxaline-1-carboxylate (CAS 1375472-20-0)
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