1-(2-Bromo-4-chloro-5-fluorophenyl)ethan-1-one CAS 129825-10-1
| CAS No. | 129825-10-1 |
| Molecular Formula | C8H5BrClFO |
| Molecular Weight | 251.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(2-Bromo-4-chloro-5-fluorophenyl)ethan-1-one (CAS 129825-10-1), molecular formula C8H5BrClFO and molecular weight 251.48 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H5BrClFO, 1-(2-Bromo-4-chloro-5-fluorophenyl)ethan-1-one contains a hydroxyl group, an ether linkage, fluorine/chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 251.48 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H5BrClFO |
| Molecular Weight | 251.48 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.) | 1994 |
| Halogen Content | F/Cl/Br-containing |
Related Bromo Standards
- 2-Bromo-5-fluorophenylacetyl chloride (CAS 1028314-61-5)
- 2-(2-Bromo-4-fluorophenyl)acetyl chloride (CAS 1086601-89-9)
- 2-Bromo-1-(3-chloro-5-fluorophenyl)ethanone (CAS 1207973-38-3)
- 1-(4-Bromo-3-fluorophenyl)-2-chloroethan-1-one (CAS 1260857-14-4)
- 5-Bromo-2-fluorophenylacetyl chloride (CAS 1346146-33-5)
- 2-Bromo-4'-chloro-2-fluoroacetophenone (CAS 1357624-45-3)
- (4-Bromo-3-fluorophenyl)acetyl chloride (CAS 1360868-19-4)
- 1-(4-Bromo-2-fluorophenyl)-2-chloroethan-1-one (CAS 1379358-56-1)
Recommended Standards
- N-tert-Butyl-1-(3-(tert-butyl)cyclopenta-2,4-dien-1-yl)-1,1-dimethylsilanamine (CAS 128000-00-0)
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- 1-(4-Bromo-2-chloro-5-fluorophenyl)-ethanone (CAS 1435805-96-1)
- 3-bromo-2-fluoro-5-methylbenzoyl chloride (CAS 1499840-13-9)
- 2,5-Dihydroxy-1,4-cyclohexanedicarboxylic Acid 1,4-Diethyl Ester (CAS 6966-80-9)
- (Chloromethyl)cyclopentane (CAS 13988-39-1)
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- 1-Boc-6-Amino-2,3-dihydroindole (CAS 129488-00-2)
- 4-(2H-1,3-benzodioxol-5-yl)-1H-pyrazol-5-amine (CAS 57999-13-0)
- 4-Methylumbelliferyl 2-acetamido-2-deoxy-α-D-galactopyranoside (CAS 124223-99-0)
- (R)-2-(3-chloro-2-methylphenyl)-2-(methylamino)ethan-1-ol (CAS 1336428-05-7)
- [6]-Dehydroparadol (CAS 53172-10-4)
- 4-Aminocyclohexanecarboxylic acid hydrochloride (CAS 854446-76-7)
- Liraglutide Impurity 18 TFA Salt (CAS CATO-C4X-199218)
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