5-bromo-1-methyl-2-phenyl-1H-imidazole CAS 71045-44-8
| CAS No. | 71045-44-8 |
| Molecular Formula | C10H9BrN2 |
| Molecular Weight | 237.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-bromo-1-methyl-2-phenyl-1H-imidazole (CAS 71045-44-8), molecular formula C10H9BrN2 and molecular weight 237.10 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H9BrN2, 5-bromo-1-methyl-2-phenyl-1H-imidazole contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 237.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
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 | C10H9BrN2 |
| Molecular Weight | 237.10 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related bromo Standards
- 4-bromo-2-cyclopropyl-1H-pyrrolo[2,3-b]pyridine (CAS 1014614-11-9)
- 1-Bromo-3-cyclopropylimidazo[1,5-a]pyridine (CAS 1018603-14-9)
- 3-Bromo-2,4-dimethyl-1,8-naphthyridine (CAS 1019108-06-5)
- 8-Bromo-2-methylquinolin-5-amine (CAS 1023815-94-2)
- 4-Bromo-2-(o-tolyl)-1H-imidazole (CAS 1049117-87-4)
- 4-Bromo-1-methyl-3-phenyl-1H-pyrazole (CAS 105994-55-6)
- 4-Bromo-1-methyl-5-phenyl-1H-pyrazole (CAS 105994-77-2)
- 4-Bromo-5-methyl-2-phenyl-1H-imidazole (CAS 109892-69-5)
Recommended Standards
- 5-(4-Bromophenyl)-3-methyl-1H-pyrazole (CAS 948293-34-3)
- 5-Bromo-3-cyclopropyl-1H-indazole (CAS 911305-80-1)
- 5-(4-Bromophenyl)-1-methylpyrazole (CAS 73387-52-7)
- 5-Bromo-3-methyl-1-phenyl-1H-pyrazole (CAS 41327-15-5)
- 1-Acetoxy-3-methoxycarbonyl-2,2,5,5-tetramethylpyrrolidine (CAS 1286167-06-3)
- 4-Allyl-5-((4-(tert-butyl)phenoxy)methyl)-4h-1,2,4-triazole-3-thiol (CAS 568574-87-8)
- 5-Cyclopropyl-3-phenyl-1,2,4-oxadiazole (CAS 884637-65-4)
- 3-(1H-1,2,3-Triazol-1-yl)aniline (CAS 16279-73-5)
- 1,8-Dihydroxy-3-methyl-2-(phenylethynyl)anthracene-9,10-dione (CAS 60714-44-5)
- 1-(3-Methylbenzyl)piperidine-2-carboxylic acid (CAS 1025013-26-6)
- [Glu]17-Liraglutide (CAS CATO-C4X-199236)
- Benzyl 3-oxa-7-azabicyclo[3.3.1]nonan-9-ylcarbamate (CAS 1445951-45-0)
- 6-Bromo-5-(difluoromethyl)-2-methoxypyridine-3-sulfonamide (CAS 1806906-02-4)
- Semaglutide Impurity 150 xTFA (CAS CATO-C4X-2226150)
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