Flurbiprofen Impurity 39 CAS 53591-98-3
| CAS No. | 53591-98-3 |
| Molecular Formula | C12H8BrF |
| Molecular Weight | 251.09 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, Flurbiprofen Impurity 39 (CAS 53591-98-3, C12H8BrF) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Flurbiprofen Impurity 39 (C12H8BrF) contains fluorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 251.09 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Flurbiprofen Impurity 39 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 | C12H8BrF |
| Molecular Weight | 251.09 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | F/Br-containing |
Related Flurbiprofen Standards
- Flurbiprofen Impurity 27 (CAS 136649-30-4)
- Flurbiprofen Impurity 154 (CAS 1515573-52-0)
- Flurbiprofen Impurity 86 (CAS 1233402-20-4)
- Flurbiprofen Impurity 73 (CAS CATO-C4X-144473)
- Flurbiprofen-d3 (CAS 1185133-81-6)
- (R)-Flurbiprofen D3 (CAS CATO-C4X-1444136)
- (S)-Flurbiprofen D3 (CAS CATO-C4X-1444137)
- Flurbiprofen impurity 123 (CAS CATO-C4X-1444123)
Recommended Standards
- 4-Bromo-2-fluorobiphenyl (CAS 41604-19-7)
- 5-Amino-2-bromobenzenesulfonamide (CAS 100367-51-9)
- 8-bromo-3-fluoro-chromen-4-one (CAS 2761011-98-5)
- 3-Amino-4-bromobenzenesulfonamide (CAS 100367-90-6)
- Selexipag Impurity 22 (CAS 2068134-98-3)
- Efinaconazole Impurity 30 (CAS 124627-86-7)
- Afatinib Impurity 29 (CAS 1456696-14-2)
- 1-(2-Chloro-benzyl)-4-isothiocyanato-3,5-dimethyl-1h-pyrazole (CAS 1004193-62-7)
- 2-(4-Aminotetrahydro-2H-pyran-4-yl)acetonitrile (CAS 1512787-31-3)
- Dimethylmethylenehydrazine (CAS 2035-89-4)
- 7-Methoxy-3,7-dimethyloct-1-ene (CAS 53767-86-5)
- 462-27-1 Carbonochloridic acid, 2-fluoroethyl ester (9CI) Formic acid, chloro-, 2-fluoroethyl ester 4-03-00-00024 (Beilstein Handbook Reference) BRN 1746655 Chloroformic acid 2-fluoroethyl ester 2-Fluorethylester kyseliny chlormravenci [Czech] 2-Fluoroethyl chloroformate TL 751 2-Fluorethylester kyseliny chlormravenci (CAS 462-27-1)
- 3-Amino-3-(2,5-dimethoxyphenyl)propan-1-ol (CAS 1082916-47-9)
- Delta-Sleep Inducing Peptide (CAS 62568-57-4)
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