4-Bromo-2-methyl-1H-imidazole CAS 16265-11-5
| CAS No. | 16265-11-5 |
| Molecular Formula | C4H5BrN2 |
| Molecular Weight | 161.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C4H5BrN2, 4-Bromo-2-methyl-1H-imidazole contains a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 161.00 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 4-Bromo-2-methyl-1H-imidazole (CAS 16265-11-5), a certified reference material (molecular formula C4H5BrN2, MW 161.00 g/mol) for analytical method development and quality control.
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-Bromo-2-methyl-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 | C4H5BrN2 |
| Molecular Weight | 161.00 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 2-Bromo-2-cyclopentenone (CAS 10481-34-2)
- 4-Bromo-5-methyl-1H-pyrazole (CAS 1076223-98-7)
- 2-Bromo-5-methylfuran (CAS 123837-09-2)
- 4-Bromo-3-methylpyrazole (CAS 13808-64-5)
- 3-Bromo-1-methyl-1<I>H</I>-pyrazole (CAS 151049-87-5)
- 4-Bromo-1-methyl-1H-pyrazole (CAS 15803-02-8)
- 4-Bromo-5-methylimidazole (CAS 15813-08-8)
- 3-Bromo-4-methylfuran (CAS 176042-58-3)
Recommended Standards
- (2E,4E)-5-Bromo-2,4-pentadienal (CAS 168295-33-8)
- (2E,4Z)-5-Bromo-2,4-pentadienal (CAS 168295-34-9)
- 2-(Bromomethyl)furan (CAS 4437-18-7)
- 1-(Bromomethyl)-1H-pyrazole (CAS 1256561-87-1)
- 2-CHLORO-N-(CYCLOPROPYLMETHYL)-N-(4-(1,1,1,3,3,3-HEXAFLUORO-2-HYDROXYPROPAN-2-YL)PHENYL)ACETAMIDE (CAS 1951441-02-3)
- Propyl 5-bromo-2-chlorobenzamide (CAS 892018-30-3)
- 3-Ethoxy-4-((2-methylallyl)oxy)benzaldehyde (CAS 363186-13-4)
- N8-Methylquinoline-5,8-diamine (CAS 1154579-88-0)
- 1H-Pyrrolo[3,2-c]pyridin-3-amine (CAS 1000342-62-0)
- 1-(5-Methyl-1-tosyl-1H-pyrrol-2-yl)ethan-1-one (CAS 827024-05-5)
- Methyl 1-(4-chlorobenzyl)-6-oxo-1,6-dihydropyridine-3-carboxylate (CAS 338755-19-4)
- Ethyl 4-(3-chlorophenyl)-1,6-dimethyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 512840-35-6)
- (4AR,7R,8R,8aS)-2-methylhexahydropyrano[3,2-d][1,3]dioxine-6,7,8-triol (CAS 18465-50-4)
- Semaglutide Impurity 75 (CAS CATO-C4X-2226175)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com