1-Bromobutane-2,3-dione CAS 5308-51-0
| CAS No. | 5308-51-0 |
| Molecular Formula | C4H5BrO2 |
| Molecular Weight | 164.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Bromobutane-2,3-dione is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 1-Bromobutane-2,3-dione (CAS 5308-51-0), a certified reference material (molecular formula C4H5BrO2, MW 164.99 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 1-Bromobutane-2,3-dione is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 164.99 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.
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 | C4H5BrO2 |
| Molecular Weight | 164.99 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 | Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
Related Bromobutane Standards
- (S)-2-Bromobutane-1,4-diol (CAS 105601-94-3)
- (R)-2-bromobutane-1,4-diol (CAS 438246-47-0)
- 4-Bromobutane-1,2-diol (CAS 33835-83-5)
- (±)-2-Bromobutane-d9 (CAS 202392-72-1)
- 1-Bromobutane-d9 (CAS 98195-36-9)
- 1-Bromobutane-2,2,3,3,4,4,4-d7 (CAS 223487-53-4)
- 1-Bromobutane-3,3,4,4,4-d5 (CAS 1219805-37-4)
- 1-Bromobutane-1,1,2,2-d4 (CAS 1219805-80-7)
Recommended Standards
- 1,4-Dichloro-2-fluorobenzene (CAS 348-59-4)
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- 2-Bromo-3-oxobutanal (CAS 87005-15-0)
- 5-Methyl-3-(methylthio)-[1,2,4]triazolo[4,3-a]pyrimidin-7(8H)-one (CAS 91912-60-6)
- Methyl 2-Amino-2-cyclopropylpropionate Hydrochloride (CAS 1333675-34-5)
- Ethyl 1-hydroxy-2-oxo-1,2-dihydroquinoline-3-carboxylate (CAS 1873-41-2)
- 3-Bromo-2-chlorophenol (CAS 863870-87-5)
- tert-butyl 4,4-difluoro-2-formylpiperidine-1-carboxylate (CAS 1454291-06-5)
- 4-(2-Chloropyrimidin-4-yl)thiomorpholine (CAS 56032-11-2)
- (R)-2-Acetamido-3-(2,5-difluorophenyl)propanoicacid (CAS 266360-55-8)
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- methyl 4-(cyanocarbamoyl)benzoate (CAS 2044713-02-0)
- Neuropeptide Y (13-36) (human, rat) (CAS 122341-40-6)
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