4,5-Dibromo-1,2-dimethyl-1H-imidazole CAS 16954-05-5
| CAS No. | 16954-05-5 |
| Molecular Formula | C5H6Br2N2 |
| Molecular Weight | 253.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,5-Dibromo-1,2-dimethyl-1H-imidazole (CAS 16954-05-5) is a high-purity analytical reference standard with the molecular formula C5H6Br2N2 and a molecular weight of 253.92 g/mol.
4,5-Dibromo-1,2-dimethyl-1H-imidazole (C5H6Br2N2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
As a certified reference material (CRM), 4,5-Dibromo-1,2-dimethyl-1H-imidazole 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 | C5H6Br2N2 |
| Molecular Weight | 253.92 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.) | 1961 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Dibromo Standards
- 3,5-Dibromo-1,4-dimethyl-1H-pyrazole (CAS 134589-54-1)
- 3,5-Dibromo-1-ethyl-1H-pyrazole (CAS 1596745-76-4)
- 2,4-Dibromo-1,5-dimethyl-1H-imidazole (CAS 850429-57-1)
- 2,5-Dibromo-1,4-dimethyl-1H-imidazole (CAS 850429-58-2)
- 3,4-Dibromo-1,5-dimethyl-1h-pyrazole (CAS 5775-95-1)
- 4,5-Dibromo-1,3-dimethyl-1H-pyrazole (CAS 5744-71-8)
- 4,5-Dibromo-2-ethyl-1H-imidazole (CAS 4002-82-8)
- 1,3-Dibromo-5-fluorobenzene (CAS 1435-51-4)
Recommended Standards
- (S)-2-(4-(2,4-Dichlorophenoxy)butanamido)-3-(1H-indol-3-yl)propanoic acid (CAS 5462-19-1)
- 2-Bromo-5-(2-bromoethyl)furan (CAS 1341531-02-9)
- Dapagliflozin Impurity N50 (CAS 21900-52-7)
- 6-Bromo-2,3-dichlorobenzaldehyde (CAS 945999-86-0)
- Copper (trimethylvinylsilyl)hexafluoroacetylacetonate (CAS 139566-53-3)
- 1H-Pyrrolo[3,2-c]pyridine-4-carbonitrile (CAS 1040682-68-5)
- Methyl 2-(2-aminoethyl)-6-cyanoisonicotinate (CAS 1393531-03-7)
- N-(2-(pyridin-2-yl)ethyl)tetrahydrothiophen-3-amine (CAS 1019487-95-6)
- 2-(Allylthio)-7-methyl-4H-pyrido[1,2-a][1,3,5]triazin-4-one (CAS 306979-26-0)
- 2-(3-((4-Chlorophenyl)sulfonyl)-2-hydroxypropoxy)benzonitrile (CAS 478079-76-4)
- DMT-2'-F-Bz-dA (CAS 136834-21-4)
- (3-Chloro-4-fluorophenyl)(4-fluoro-4-(hydroxymethyl)piperidin-1-yl)methanone (CAS 208111-36-8)
- 6-Chloro-4,5-dihydro-1H-benzo[b]azepin-2(3H)-one (CAS 269728-96-3)
- Semaglutide Impurity 82 (CAS CATO-C4X-222682)
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