2-Bromo-4-methylimidazole CAS 23328-88-3
| CAS No. | 23328-88-3 |
| Molecular Formula | C4H5BrN2 |
| Molecular Weight | 161.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-Bromo-4-methylimidazole.
2-Bromo-4-methylimidazole (CAS 23328-88-3), molecular formula C4H5BrN2 and molecular weight 161.00 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, bromine substitution, 2-Bromo-4-methylimidazole is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 161.00 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | 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.) | 1963 |
| 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)
- 4-Bromo-2-methyl-1H-imidazole (CAS 16265-11-5)
Recommended Standards
- 2-Bromo-4-methylfuran (CAS 78259-59-3)
- 3-bromo-2-methyl-furan (CAS 83457-06-1)
- 2-Bromo-3-methylfuran (CAS 64230-60-0)
- 3-Bromo-5-methylpyrazole (CAS 57097-81-1)
- 5-methoxy-1,3-dimethyl-1H-pyrazole (CAS 53091-80-8)
- 2-(3,4-Dihydro-1H-2-benzopyran-1-yl)ethan-1-amine (CAS 27797-24-6)
- Flamprop-M-isopropyl Solution (CAS 57973-67-8)
- N-(2-Bromo-4-methylphenyl)-4-chlorobenzamide (CAS 299954-67-9)
- 2-Chloro-N-(4-methoxybenzyl)-6-methylbenzamide (CAS 1425045-75-5)
- 4-Amino-1,3-dihydrofuro[3,4-c]quinoline-8-carboxylic acid (CAS 2774613-63-5)
- (S)-1,1,1-Trifluoropentan-2-amine (CAS 1335661-17-0)
- Methyl Quinoline-6-carboxylate (CAS 38896-30-9)
- Ethyl 2-(4-chlorophenyl)-1-indolizinecarboxylate (CAS 477862-74-1)
- D-Gln24-Tirzepatide (CAS CATO-CPTD788910)
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