5-Bromo-1-methyl-1H-imidazole-4-carbaldehyde CAS 79326-90-2
| CAS No. | 79326-90-2 |
| Molecular Formula | C5H5BrN2O |
| Molecular Weight | 189.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Bromo-1-methyl-1H-imidazole-4-carbaldehyde (CAS 79326-90-2) is a high-purity analytical reference standard with the molecular formula C5H5BrN2O and a molecular weight of 189.01 g/mol.
Owing to an amide group, a hydroxyl group, an ether linkage, bromine substitution, 5-Bromo-1-methyl-1H-imidazole-4-carbaldehyde is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 189.01 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C5H5BrN2O |
| Molecular Weight | 189.01 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 5-Bromo-3-methylpyrazin-2-ol (CAS 100047-56-1)
- 2-Bromo-5-hydrazinylpyrazine (CAS 1001050-24-3)
- (4-bromo-1H-pyrazol-1-yl)acetaldehyde (CAS 1007550-84-6)
- 6-Bromo-2-methyl-3(2H)-pyridazinone (CAS 1123169-25-4)
- 2-Bromo-5-hydrazinylpyrimidine (CAS 1174413-61-6)
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Recommended Standards
- 5-(bromomethyl)furan-2-carbaldehyde (CAS 39131-44-7)
- 5-Bromo-2-methylpyridazin-3(2H)-one (CAS 67264-09-9)
- 4-Bromo-6-methylpyridazin-3(2H)-one (CAS 954240-46-1)
- 5-Bromo-2-methylpyrimidin-4(1H)-one (CAS 24614-15-1)
- 2-(2-Fluoro-1-(mercaptomethyl)cyclopropyl)acetic acid (CAS 1624261-18-2)
- Methyl 3-(1-ethyl-1h-1,2,4-triazol-5-yl)-2-hydroxypropanoate (CAS 1465512-76-8)
- 1-((1-Fluorocyclobutyl)methyl)-1H-pyrazol-4-amine (CAS 2839891-88-0)
- 1-(2-Fluorophenyl)-6-(thiophen-2-yl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 1011398-29-0)
- Methyl 2-chloro-6-fluoro-3,4-bis((4-methoxybenzyl)oxy)benzoate (CAS 2637445-12-4)
- 3-Bromo-4-(pentyloxy)benzoic acid (CAS 77146-48-6)
- 2-Benzyl-5-bromopyridine (CAS 313990-64-6)
- 3-Ethylfuran (CAS 67363-95-5)
- p-Nonyloxybenzylidene p-butylaniline (CAS 51749-28-1)
- D-Pro37-Tirzepatide (CAS CATO-CPTD788902)
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