3-bromo-2-oxobutanoic acid CAS 61964-74-7
| CAS No. | 61964-74-7 |
| Molecular Formula | C4H5BrO3 |
| Molecular Weight | 180.98 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 3-bromo-2-oxobutanoic acid (C4H5BrO3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, 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.
3-bromo-2-oxobutanoic acid (CAS 61964-74-7), molecular formula C4H5BrO3 and molecular weight 180.98 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C4H5BrO3 |
| Molecular Weight | 180.98 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Br-containing |
Related bromo Standards
- 4-Bromo-3-oxobutanoic Acid (CAS 27807-85-8)
- 3-bromo-2-oxopropanoic acid methyl ester 7425-63-0 A838075 methyl 3-bromanyl-2-oxidanylidene-propanoate (CAS 7425-63-0)
- 1-Bromo-4-fluorobenzene-<SUP>13</SUP>C<SUB>6</SUB> (CAS 1313734-60-9)
- 5-Bromo-1,3,4-oxadiazole-2(3H)-thione (CAS 1892386-22-9)
- 3-bromo-5-ethyl-1,2,4-oxadiazole (CAS 1256643-25-0)
- 3-bromo-4-fluorothiophene (CAS 133360-02-8)
- (5-bromo-1H-imidazol-2-yl)methanol (CAS 1804129-02-9)
- 4-bromo-2-methyl-pyrazol-3-ol (CAS 1935996-83-0)
Recommended Standards
- (3S,4S)-3-Bromo-4-hydroxydihydrofuran-2(3H)-one (CAS 117858-88-5)
- 3-Iodopropanenitrile (CAS 2517-76-2)
- 3,4-Dichloro-1H-pyrazole-5-carboxylic acid (CAS 115964-19-7)
- 4,5-Dichloro-1h-imidazole-2-carboxylic acid (CAS 64736-53-4)
- 2-Formyl-6-methoxy-3-methyl-benzoic acid (CAS 945981-91-9)
- 6-(4-Fluorophenyl)-1-methyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 1368556-31-3)
- (R)-3,3,3',3'-tetramethyl-2,2',3,3'-tetrahydro-1,1'-spirobi[indene]-7,7'-diol (CAS 2244617-79-4)
- 2,5-Dimethoxy-4-(methoxymethyl)benzoic acid (CAS 1898237-53-0)
- 1-(2-Oxo-2,3-dihydro-1,3-benzoxazol-5-yl)cyclopropane-1-carboxylic acid (CAS 945244-05-3)
- (S)-tert-Butyl 3-cyclobutaneamidopiperidine-1-carboxylate (CAS 1332765-88-4)
- Latamoxef Impurity 24 (CAS CATO-C4X-179824)
- 4-(((4-Acetamidophenyl)sulfonamido)methyl)cyclohexane-1-carboxylic acid (CAS 301827-49-6)
- 1-Ethyl-3-(trifluoromethyl)-1H-pyrazole-4-sulfonyl chloride (CAS 1245823-61-3)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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