4,4',5,5'-Tetrabromo-1H,1'H-2,2'-biimidazole CAS 98138-00-2
| CAS No. | 98138-00-2 |
| Molecular Formula | C6H2Br4N4 |
| Molecular Weight | 449.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 4,4',5,5'-Tetrabromo-1H,1'H-2,2'-biimidazole (C6H2Br4N4) is characterized by a nitrile group, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies 4,4',5,5'-Tetrabromo-1H,1'H-2,2'-biimidazole (CAS 98138-00-2), a certified reference material (molecular formula C6H2Br4N4, MW 449.72 g/mol) for analytical method development and quality control.
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 | C6H2Br4N4 |
| Molecular Weight | 449.72 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 room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
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- 4-Bromo-N-(tert-butyl)-2-fluorobenzenesulfonamide (CAS 1355680-54-4)
- 1-(1-Methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)-N-((tetrahydrofuran-2-yl)methyl)methanamine hydrochloride (CAS 1856037-05-2)
- sodium 2-[2-({[(tert-butoxy)carbonyl]amino}methyl)-1H-1,3-benzodiazol-1-yl]acetate (CAS 2060041-43-0)
- 3-(2-Methoxy-5-nitrophenyl)-2-methylpropanoic acid (CAS 858216-92-9)
- Semaglutide impurity 106 (CAS CATO-C4X-2226106)
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