4-Bromo-3,3-difluorobutan-2-one CAS 1379267-74-9
| CAS No. | 1379267-74-9 |
| Molecular Formula | C4H5BrF2O |
| Molecular Weight | 186.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 186.98 g/mol gives 4-Bromo-3,3-difluorobutan-2-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Bromo-3,3-difluorobutan-2-one (CAS 1379267-74-9) is a high-purity analytical reference standard with the molecular formula C4H5BrF2O and a molecular weight of 186.98 g/mol.
The molecular framework of 4-Bromo-3,3-difluorobutan-2-one (C4H5BrF2O) is characterized by a hydroxyl group, an ether linkage, fluorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C4H5BrF2O |
| Molecular Weight | 186.98 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | F/Br-containing |
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