3-bromo-4,4-dimethylpentan-2-one CAS 4957-78-2
| CAS No. | 4957-78-2 |
| Molecular Formula | C7H13BrO |
| Molecular Weight | 193.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-bromo-4,4-dimethylpentan-2-one is closely related to a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-bromo-4,4-dimethylpentan-2-one (CAS 4957-78-2), molecular formula C7H13BrO and molecular weight 193.08 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a hydroxyl group, an ether linkage, bromine substitution, 3-bromo-4,4-dimethylpentan-2-one is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 193.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C7H13BrO |
| Molecular Weight | 193.08 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.) | 1958 |
| Halogen Content | Br-containing |
Related bromo Standards
- 4-bromo-5-methylpyridin-2-amine (CAS 1033203-32-5)
- 3-(2-Bromo-ethyl)-tetrahydro-pyran (CAS 1050496-64-4)
- (2-bromo-1-ethoxyethyl)cyclopropane (CAS 1086271-38-6)
- 4-Bromo-2,2-dimethyltetrahydro-2H-pyran (CAS 1339437-32-9)
- 4-bromo-5-ethyl-1-methylpyrazole (CAS 1393728-48-7)
- 4-Bromo-1-propyl-1H-pyrazole (CAS 141302-33-2)
- 3-(3-Bromo-2-methylpropoxy)prop-1-ene (CAS 1465654-08-3)
- 1-Bromo-3-propoxycyclobutane (CAS 1516177-37-9)
Recommended Standards
- 3,4,5-Trifluoro-2-nitrophenol (CAS 923033-24-3)
- 3-bromo-4-methylpyridin-2-amine (CAS 40073-38-9)
- 2-bromo-5-methylpyridin-4-amine (CAS 79055-60-0)
- 3-bromo-5-methyl-pyridin-4-amine (CAS 97944-43-9)
- 1-(4-Azepan-1-yl-3-fluorophenyl)ethanone (CAS 420826-76-2)
- Methyl 3-(N-methylmethylsulfonamido)thiophene-2-carboxylate (CAS 214532-30-6)
- N'-[(1E)-[6-(4-Bromophenyl)imidazo[2,1-b][1,3]thiazol-5-yl]methylidene]-4-(trifluoromethyl)benzohydrazide (CAS 691887-87-3)
- N-(1H-Pyrrolo[2,3-b]pyridin-6-yl)acetamide (CAS 1000341-56-9)
- 2,6-Dibromo-4-fluorobenzaldehyde (CAS 938467-02-8)
- (S)-N-(1-phenylethyl)but-3-en-1-amine (CAS 114963-47-2)
- Tepotinib impurity 23 (CAS CATO-C4X-337423)
- (2-Cyclopropyl-6-methoxyphenyl)boronic acid (CAS 2225169-89-9)
- Methyl 2-(3-(tert-butyl)phenyl)-2-oxoacetate (CAS 1329481-48-2)
- Peptide Impurity 41 (CAS CATO-CPTD788841)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com