1-(5-Bromo-2-fluorophenyl)-2,2-difluoroethanone CAS 1262858-97-8
| CAS No. | 1262858-97-8 |
| Molecular Formula | C8H4BrF3O |
| Molecular Weight | 253.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(5-Bromo-2-fluorophenyl)-2,2-difluoroethanone (C8H4BrF3O) contains a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-(5-Bromo-2-fluorophenyl)-2,2-difluoroethanone (CAS 1262858-97-8), molecular formula C8H4BrF3O and molecular weight 253.02 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C8H4BrF3O |
| Molecular Weight | 253.02 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, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
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- 2-Bromo-3-(trifluoromethyl)benzaldehyde (CAS 1114808-95-5)
- 2-Bromo-1-(2,3,4-trifluorophenyl)ethan-1-one (CAS 1214345-02-4)
- 2-Bromo-6-(trifluoromethyl)benzaldehyde (CAS 1236141-95-9)
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Recommended Standards
- (4-(Isopropoxycarbonyl)-2-nitrophenyl)boronic acid (CAS 1150114-61-6)
- 4-(Trifluoromethyl)benzoyl bromide (CAS 112812-10-9)
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- 2-Bromo-2,2-difluoro-1-(4-fluorophenyl)ethan-1-one (CAS 1802650-67-4)
- 5-Phenylpyridine-3-carbaldehyde (CAS 113118-84-6)
- 1-Ethyl-3-(trifluoromethyl)-1H-pyrazole-5-carboxylic acid (CAS 128694-66-6)
- (2Z)-3-(4-Chlorophenyl)-N-(4-fluorophenyl)prop-2-enamide (CAS 331461-49-5)
- (R)-2-methylpyrrolidine 4-methylbenzenesulfonate (CAS 204387-55-3)
- 2-((3-Amino-4-methoxyphenyl)amino)ethanol (CAS 83763-47-7)
- Ethyl 4-Aminocyclohexanecarboxylate (CAS 51498-33-0)
- 2,5,7-Trimethylquinolin-4-ol (CAS 65674-07-9)
- 1-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,5-a]pyridine (CAS 1416367-32-2)
- Thiofentanyl hydrochloride (CAS 79278-88-9)
- [2-31]-Semaglutide C (x TFA Salt) (CAS CATO-C4X-2226118)
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