4-Bromo-2-fluoro-1-(2,2,2-trifluoroethyl)benzene CAS 1256841-61-8
| CAS No. | 1256841-61-8 |
| Molecular Formula | C8H5BrF4 |
| Molecular Weight | 257.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Bromo-2-fluoro-1-(2,2,2-trifluoroethyl)benzene is closely related to fluorine/bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-Bromo-2-fluoro-1-(2,2,2-trifluoroethyl)benzene (CAS 1256841-61-8), molecular formula C8H5BrF4 and molecular weight 257.02 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Bromo-2-fluoro-1-(2,2,2-trifluoroethyl)benzene (C8H5BrF4) contains fluorine/bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 257.02 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H5BrF4 |
| Molecular Weight | 257.02 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
- 2-Bromo-1-fluoro-4-(2,2,2-trifluoroethyl)benzene (CAS 1099598-18-1)
- 1-Bromo-4-fluoro-2-(2,2,2-trifluoroethyl)benzene (CAS 1186194-80-8)
- 2-Bromo-4-fluoro-1-(2,2,2-trifluoroethyl)-benzene (CAS 1186194-81-9)
- 4-Bromo-1-fluoro-2-(2,2,2-trifluoroethyl)benzene (CAS 1186195-21-0)
- 4-(2-Bromo-1,1-difluoroethyl)-1,2-difluorobenzene (CAS 1254038-53-3)
- 1-Bromo-3,5-bis(difluoromethyl)benzene (CAS 1379370-60-1)
- 1-Bromo-4-(1,1,2,2-tetrafluoroethyl)benzene (CAS 1783392-06-2)
- 1-Bromo-4-(1,2,2,2-tetrafluoroethyl)benzene (CAS 189762-23-0)
Recommended Standards
- 3,6-Dichloro-2-(difluoromethoxy)benzoic acid (CAS 1803712-69-7)
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- 2-(3,5-Dichlorophenoxy)-2,2-difluoroacetic acid (CAS 1153780-39-2)
- 2,4-Dichloro-3-(difluoromethoxy)benzoic acid (CAS 1803788-10-4)
- 3,6-Difluoro-2-methylbenzamide (CAS 1804882-84-5)
- 1-Bromo-2-(2-bromo-1-(3-methoxypropoxy)ethyl)benzene (CAS 1249275-84-0)
- 7-iodo-1H,2H,3H-pyrazolo[1,5-a]imidazole (CAS 1909324-91-9)
- Ethyl 2-((4-fluoro-2-methylphenyl)thio)-2-oxoacetate (CAS 1443335-16-7)
- (S)-tert-Butyl 3-(methylsulfonyloxy)piperidine-1-carboxylate (CAS 940890-90-4)
- 1-(4-Methoxybenzyl)cyclobutane-1-carboxylic acid (CAS 1439903-09-9)
- Heptanoic acid, 7-[[(1,1-dimethylethoxy)carbonyl]amino]-, 2,5-dioxo-1-pyrrolidinyl ester (CAS 441349-04-8)
- 3-BROMO-4-(TRIFLUOROMETHYL)PYRIDINE 4-(TRIFLUOROMETHYL)-3-BROMOPYRIDINE 936841-70-2 ABBYPHARMA AP-11-5536 BC004552 (CAS 936841-70-2)
- 1-[(Methoxymethoxy)methyl]-3-nitrobenzene (CAS 142509-31-7)
- Semaglutide impurity 66 (CAS CATO-C4X-222666)
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