Flurbiprofen Impurity 19 CAS CATO-C4X-144419
| CAS No. | CATO-C4X-144419 |
| Molecular Formula | C18H19FO4 |
| Molecular Weight | 318.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Flurbiprofen Impurity 19 is closely related to a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Flurbiprofen Impurity 19 (CAS CATO-C4X-144419) is a certified pharmaceutical impurity reference standard with the molecular formula C18H19FO4 and a molecular weight of 318.34 g/mol.
Based on its molecular formula C18H19FO4, Flurbiprofen Impurity 19 contains a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 318.34 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).
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 certified reference material (CRM), Flurbiprofen Impurity 19 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.
Physical & Chemical Properties
| Molecular Formula | C18H19FO4 |
| Molecular Weight | 318.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 21 (Mixture of Diastereomers) (CAS 124635-84-3)
- Flurbiprofen Impurity 46 (CAS CATO-C4X-144446)
- Flurbiprofen 2-Glyceryl Ester (CAS 124635-86-5)
- Flurbiprofen Impurity 67 (CAS CATO-C4X-144467)
- Flurbiprofen Impurity 124 (CAS CATO-C4X-1444124)
- Flurbiprofen Impurity 172 (CAS 543688-88-6)
- Flurbiprofen EP Impurity B (Mixture of Diastereomers) (CAS 1797883-74-9)
- Flurbiprofen Impurity 165 (CAS CATO-C4X-1444165)
Recommended Standards
- N-(4-Ethylbenzo[d]thiazol-2-yl)-2,6-difluorobenzamide (CAS 892850-42-9)
- N-(4-amino-2,5-diethoxyphenyl)-2-fluorobenzamide (CAS 917561-73-0)
- N-(3-Ethyl-4-fluorobenzo[d]thiazol-2(3H)-ylidene)-4-fluorobenzamide (CAS 868371-12-4)
- Safinamide Impurity 3 (CAS CATO-C4X-15903)
- Diphenhydramine EP Impurity B (CAS 19804-27-4)
- Cefdinir CP Impurity P&Q (CAS CATO-C4X-121010)
- Eldecalcitol Impurity 64 (CAS CATO-C4X-214064)
- 3-Bromo-3H-pyrazolo[3,4-d]pyrimidin-4-amine (CAS 570409-86-8)
- N3-Ethylpyridine-3,4-diamine (CAS 61719-62-8)
- (S)-4-oxo-4-(1-phenylethylamino)butanoic acid (S)-N-(1-Phenylethyl)succinic acid monoamide 21752-34-1 (CAS 21752-34-1)
- (3,5-Dibromo-1H-1,2,4-triazol-1-yl)methanol (CAS 1674389-79-7)
- 3,4-Diaminofurazan (CAS 17220-38-1)
- 8-Fluoro-2-oxo-2H-chromene-3-carboxylic acid (CAS 625823-51-0)
- Fragment-[3-31]-Semaglutide (CAS CATO-C4X-2226113)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com