1-(3-Bromo-4,5-difluorophenyl)ethan-1-one CAS 1805420-44-3
| CAS No. | 1805420-44-3 |
| Molecular Formula | C8H5BrF2O |
| Molecular Weight | 235.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system, 1-(3-Bromo-4,5-difluorophenyl)ethan-1-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 235.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
1-(3-Bromo-4,5-difluorophenyl)ethan-1-one (CAS 1805420-44-3), molecular formula C8H5BrF2O and molecular weight 235.03 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 | C8H5BrF2O |
| Molecular Weight | 235.03 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.) | 1995 |
| Halogen Content | F/Br-containing |
Related Bromo Standards
- 4'-Bromo-2',3'-difluoroacetophenone (CAS 1007346-28-2)
- 3’-Bromo-2’,4’-difluoroacetophenone (CAS 1210824-63-7)
- 4-Bromo-2,5-difluoroacetophenone, 97% (CAS 123942-11-0)
- 1-(2-Bromo-4,5-difluorophenyl)ethanone (CAS 127371-55-5)
- 5-Bromo-2,4-difluoro-3-methylbenzaldehyde (CAS 1378865-38-3)
- 5-Bromo-2-(2,2-difluorocyclopropyl)pyrimidine (CAS 1393572-03-6)
- 1-(4-Bromo-3,5-difluorophenyl)ethanone (CAS 1528607-78-4)
- 1-(6-Bromo-2,3-difluorophenyl)ethanone (CAS 1542563-93-8)
Recommended Standards
- 1-(2-Bromo-4,6-difluorophenyl)ethan-1-one (CAS 1805119-78-1)
- 1-(2-Bromo-3,6-difluorophenyl)ethan-1-one (CAS 1807029-26-0)
- 3’-Bromo-2’,5’-difluoroacetophenone (CAS 1784372-76-4)
- 5-Bromo-2,3-difluoro-4-methylbenzaldehyde (CAS 1823871-92-6)
- 8-Bromoquinazolin-4(3H)-one (CAS 77150-35-7)
- 1-(5-Bromo-2,3-difluorophenyl)-4-methylpiperidine (CAS 1704067-14-0)
- (9H-fluoren-9-yl)methyl (pyrrolidin-2-ylmethyl)carbamate (CAS 1131622-58-6)
- Avanafil Impurity 48 (CAS 1830294-64-8)
- 1-(2-Bromo-1-fluoroethyl)-4-chlorobenzene (CAS 242148-56-7)
- 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine (CAS 948593-70-2)
- 3-Iodo-1-methyl-6,7-dihydro-5H-cyclopenta[c]pyridine-6-carbaldehyde (CAS 2714000-77-6)
- meta-Fluorofentanyl (CAS 90736-22-4)
- 2-(2,5-Difluorophenyl)-2-isopropoxyethanamine (CAS 1269527-46-9)
- D-Ile17-Tirzepatide (CAS CATO-CPTD788917)
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