2,5-Dibromo-4-methylimidazole CAS 219814-29-6
| CAS No. | 219814-29-6 |
| Molecular Formula | C4H4Br2N2 |
| Molecular Weight | 239.90 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,5-Dibromo-4-methylimidazole is closely related to a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,5-Dibromo-4-methylimidazole (CAS 219814-29-6), molecular formula C4H4Br2N2 and molecular weight 239.90 g/mol, is a CATO reference standard with documented purity and traceability.
2,5-Dibromo-4-methylimidazole (C4H4Br2N2) contains a nitrile group, bromine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), 2,5-Dibromo-4-methylimidazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C4H4Br2N2 |
| Molecular Weight | 239.90 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, 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 |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2019 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 4,5-Dibromo-1-methylimidazole (CAS 1003-50-5)
- 3,5-Dibromo-1-methyl-1H-pyrazole (CAS 1361019-05-7)
- 2,4-Dibromo-1-methyl-1H-imidazole, 97% (CAS 53857-60-6)
- 2,5-Dibromo-1-methyl-1H-imidazole, 97% (CAS 53857-59-3)
- 3,4-Dibromo-1-methyl-pyrazole (CAS 89607-14-7)
- 3,4-Dibromo-5-methylpyrazole (CAS 5932-19-4)
- 3,5-Dibromo-4-methyl-1H-pyrazole (CAS 60061-54-3)
- 4,5-Dibromo-1-methyl-1H-pyrazole (CAS 70951-86-9)
Recommended Standards
- 2-Bromo-5-(bromomethyl)furan (CAS 251649-67-9)
- 4,5-Dibromo-2-methyl-1H-imidazole (CAS 4002-81-7)
- 2-Bromo-4-(bromomethyl)furan (CAS 92753-15-6)
- 3,5-Dibromopyridine-d3 (CAS 1219799-05-9)
- 1,3-Difluoro-2,4-pentanedione (CAS 87498-27-9)
- 4-Chloro-5-fluoro-1H-benzo[d]imidazole (CAS 1360902-43-7)
- 6-Chloro-3-methylquinolin-8-amine (CAS 644986-04-9)
- 2-(3-Chloropropyl)-1,4-dimethylbenzene (CAS 27645-19-8)
- Cyclopropyl({4'-methoxy-[1,1'-biphenyl]-4-yl})methanone (CAS 865659-55-8)
- Cadaverine Dihydrochloride (CAS 1476-39-7)
- 2-Chloro-n-(3-methyl-1,2-oxazol-5-yl)acetamide (CAS 69000-39-1)
- tert-butyl 4-formyl-3,3-dimethyl-piperidine-1-carboxylate (CAS 2393850-16-1)
- (E)-3-(2,6-dichlorophenyl)-5-(2-((2,4-dichlorophenyl)amino)vinyl)isoxazole-4-carbonitrile (CAS 338402-63-4)
- Semaglutide impurity 27 (CAS CATO-C4X-222627)
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