4,5-Dibromo-1H-imidazole-2-carboxylic acid CAS 74840-91-8
| CAS No. | 74840-91-8 |
| Molecular Formula | C4H2Br2N2O2 |
| Molecular Weight | 269.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,5-Dibromo-1H-imidazole-2-carboxylic acid.
4,5-Dibromo-1H-imidazole-2-carboxylic acid (CAS 74840-91-8) is a high-purity analytical reference standard with the molecular formula C4H2Br2N2O2 and a molecular weight of 269.88 g/mol.
4,5-Dibromo-1H-imidazole-2-carboxylic acid (C4H2Br2N2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4,5-Dibromo-1H-imidazole-2-carboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C4H2Br2N2O2 |
| Molecular Weight | 269.88 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 4,5-Dibromo-1H-pyrazole-3-carboxylic acid (CAS 13745-16-9)
- 4,5-Dibromo-1,2-dihydropyridazine-3,6-dione (CAS 6958-60-7)
- 2,5-Dibromo-4-fluorophenol (CAS 1155354-15-6)
- 1,4-Dibromo-1,1,2-trifluorobutane (CAS 155957-57-6)
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Recommended Standards
- Uracil Impurity 14 (CAS 21428-26-2)
- 3,5-Dibromofuran-2-carboxylic acid (CAS 32460-08-5)
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- 3-Bromo-2-(bromomethyl)-1,1,1-trifluoropropane (CAS 1263377-32-7)
- 6-chloro-1-isopropyl-1H-pyrazolo[3,4-b]pyridine-5-carbaldehyde (CAS 885461-63-2)
- Cefotaxime Impurity 32 (CAS CATO-C4X-120132)
- N-(2-Methoxy-1-methylethyl)-3-nitropyridin-2-amine (CAS 1036536-92-1)
- 1-{[3-(trifluoromethyl)phenyl]methyl}-1h-pyrazol-4-amine dihydrochloride (CAS 1177355-59-7)
- tert-Butyl 1-(2-fluoro-5-methoxybenzyl)piperidin-4-ylcarbamate (CAS 1286274-59-6)
- 3-Ethyl-5-(pyrrolidin-3-yl)-1,2,4-oxadiazole (CAS 1339103-05-7)
- 3-Chloro-1-propyl-6,7-dihydro-5H-cyclopenta[c]pyridine-4-carbonitrile (CAS 2512765-32-9)
- Methyl7-methyloctanoate (CAS 5129-53-3)
- 5,6,7,8-Tetrahydroisoquinoline 2-oxide (CAS 50388-20-0)
- GnRH Associated Peptide (GAP) (1-13), human (CAS 100111-07-7)
Why CATO?
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