Flurbiprofen Impurity 43 CAS CATO-C4X-144443
| CAS No. | CATO-C4X-144443 |
| Molecular Formula | C18H19FO2 |
| Molecular Weight | 286.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Flurbiprofen Impurity 43 (CAS CATO-C4X-144443, C18H19FO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, a hydroxyl group, an ether linkage, fluorine substitution, Flurbiprofen Impurity 43 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 286.34 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures Flurbiprofen Impurity 43 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H19FO2 |
| Molecular Weight | 286.34 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 tightly closed to prevent evaporation |
| 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 105 (CAS CATO-C4X-1444105)
- Flurbiprofen Impurity N16 (CAS 252846-89-2)
- Flurbiprofen Impurity 58 (CAS CATO-C4X-144458)
- Flurbiprofen Impurity 55 (CAS 42771-82-4)
- Flurbiprofen Impurity 27 (CAS CATO-C4X-144427)
- Flurbiprofen Impurity 17 (CAS 78543-08-5)
- Flurbiprofen Impurity 22 (CAS 1346604-78-1)
- Flurbiprofen Impurity 111 (CAS CATO-C4X-1444111)
Recommended Standards
- Landiolol Impurity 89 (CAS CATO-C4X-262189)
- Linezolid Impurity 92 (CAS 872991-73-6)
- Ethofumesate (CAS 26225-79-6)
- (2,2-dimethyl-1,3-dioxolan-4-yl)methyl 4-methylbenzenesulfonate (CAS 7305-59-1)
- Escitalopram Impurity 2 (CAS 103146-25-4)
- Naltrexone Impurity 23 (CAS 102272-79-7)
- Imatinib Impurity 75 (CAS CATO-C4X-106875)
- (3-(1H-Benzo[d]imidazol-2-yl)phenyl)methanamine hydrochloride (CAS 2007909-45-5)
- 6’-Hydroxymethyl simvastatin (CAS 114883-29-3)
- 1-Bromo-3-chloro-2,5-dimethylbenzene (CAS 1780808-80-1)
- N,6-Dimethyl-2-(thiophene-2-carboxamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide (CAS 892977-21-8)
- Ethyl 2-amino-2-(trifluoromethyl)pentanoate (CAS 1263376-64-2)
- Pro-Gly-OMe TFA (CAS 634922-10-4)
- Tirzepatide Impurity 57 (CAS CATO-C4X-324057)
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