5-Bromo-3-methyl-2(5H)-furanone CAS 51799-96-3
| CAS No. | 51799-96-3 |
| Molecular Formula | C5H5BrO2 |
| Molecular Weight | 177.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 177.00 g/mol gives 5-Bromo-3-methyl-2(5H)-furanone distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 5-Bromo-3-methyl-2(5H)-furanone (CAS 51799-96-3), a certified reference material (molecular formula C5H5BrO2, MW 177.00 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H5BrO2, 5-Bromo-3-methyl-2(5H)-furanone contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 177.00 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.
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 | C5H5BrO2 |
| Molecular Weight | 177.00 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 | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Br-containing |
Related Bromo Standards
- 5-Bromo-3-methoxypyrazole (CAS 1015779-81-3)
- (3-Bromo-1H-pyrazol-1-yl)methanol (CAS 1039454-62-0)
- 3-Bromo-5,6-dihydropyran-2-one (CAS 104184-64-7)
- 4-Bromo-3-methoxy-1H-pyrazole (CAS 1147011-26-4)
- (2-Bromo-1h-imidazol-4-yl)methanol (CAS 1162674-62-5)
- 2-Bromo-3-hydroxycyclopent-2-en-1-one (CAS 1189352-96-2)
- 4-Bromo-5,6-dihydro-2H-pyran-2-one (CAS 124066-92-8)
- 4-Bromo-3-methyl-2,5-dihydro-1,2-oxazol-5-imine (CAS 1356635-81-8)
Recommended Standards
- 5-Bromo-2-methyl-2,4-dihydro-3H-pyrazol-3-one (CAS 623577-53-7)
- Ethyl 3-bromopropiolate (CAS 41658-03-1)
- 5-bromo-2,3-dihydropyran-4-one (CAS 359688-89-4)
- Methyl 4-bromobut-2-ynoate (CAS 40995-01-5)
- 5-bromo-4-methyl-pyridine-2-carbonitrile (CAS 886364-86-9)
- 1-(2-Furylmethyl)piperidin-4-amine dihydrochloride 185110-14-9 (CAS 185110-14-9)
- 2-Hydroxy-3-methoxypyridine (CAS 20928-63-6)
- 2-Isopropyl-3-methyl-1H-indole (CAS 91639-44-0)
- 2-Chloro-4-hydroxybenzoic Acid (CAS 56363-84-9)
- (2s)-2-{bicyclo[1.1.1]pentan-1-yl}-2-{[(tert-butoxy)carbonyl]amino}aceticacid (CAS 2227198-59-4)
- Lysozyme is derived from egg white (CAS 12650-88-3)
- Liothyronine Impurity 4 (CAS CATO-C4X-21314)
- 1-Bromo-3-chloro-2-fluoropropane (CAS 32753-90-5)
- Semaglutide impurity 83 (CAS CATO-C4X-222683)
Why CATO?
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