2-Bromobut-2-enedioic acid CAS 584-99-6
| CAS No. | 584-99-6 |
| Molecular Formula | C4H3BrO4 |
| Molecular Weight | 194.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Bromobut-2-enedioic acid (CAS 584-99-6), molecular formula C4H3BrO4 and molecular weight 194.97 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2-Bromobut-2-enedioic acid (C4H3BrO4) is characterized by a carbohydrate-derived structure, 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.
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 | C4H3BrO4 |
| Molecular Weight | 194.97 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 | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
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Recommended Standards
- 2712AF 5-Bromo-2,4-difluoropyrimidine 903131-29-3 C4HBrF2N2 (CAS 903131-29-3)
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- 5-Bromo-4,6-difluoropyrimidine (CAS 946681-88-5)
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- Ramosetron Impurity 14 (CAS 171967-71-8)
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- 3-Cyanopropanamide (CAS 61892-68-0)
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- Semaglutide impurity 259 (CAS CATO-C4X-2226259)
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