2,4,5-Tribromo-1-ethyl-1H-imidazole CAS 31250-75-6
| CAS No. | 31250-75-6 |
| Molecular Formula | C5H5Br3N2 |
| Molecular Weight | 332.82 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,4,5-Tribromo-1-ethyl-1H-imidazole (CAS 31250-75-6), molecular formula C5H5Br3N2 and molecular weight 332.82 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2,4,5-Tribromo-1-ethyl-1H-imidazole (C5H5Br3N2) is characterized by a nitrile group, bromine substitution. 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. 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.
Physical & Chemical Properties
| Molecular Formula | C5H5Br3N2 |
| Molecular Weight | 332.82 g/mol |
| Appearance | 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 |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Tribromo Standards
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Recommended Standards
- 4-acetyl-N-[(5-chloro-2-methylphenyl)methyl]-3-ethyl-5-methyl-1H-pyrrole-2-carboxamide (CAS 1797582-48-9)
- 2-Chloro-N,N’-bis-(4-ethoxy-phenyl)-acetamidine (CAS 40403-45-0)
- tert-Butyl 3-(4-chlorobutyl)-5-cyano-1H-indole-1-carboxylate (CAS 1796928-27-2)
- 2-Chloro-N-cyclohexyl-N-((2-oxo-1,2-dihydroquinolin-4-yl)methyl)acetamide (CAS 917562-17-5)
- 4-Amino-2-bromo-5-fluorophenol (CAS 111856-96-3)
- 1-Oxo-2,3-dihydro-1H-indene-5-carbaldehyde (CAS 1187196-52-6)
- 21089-45-2 4-amino-5-phenyl-4h-1,2,4-triazole-3-thiol (CAS 21089-45-2)
- 3-Bromo-2,5-dichloroaniline (CAS 219963-63-0)
- Methyl 4-(2-oxo-1,2-dihydroquinolin-3-yl)butanoate (CAS 647836-42-8)
- (-)-Alpha-Conidendrin (CAS 518-55-8)
- 4-Methanesulfonyl-2-[(3-methylphenyl)formamido]butanoic acid (CAS 1025058-90-5)
- 1-(2-Amino-5-fluoro-3-methoxyphenyl)ethan-1-one (CAS 1232407-23-6)
- Benzo[1,2-b:5,4-b']dithiophene (CAS 267-61-8)
- Endo-Gly29-Tirzepatide (CAS CATO-CPTD788685)
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