4-Bromo-1H-benzoimidazole CAS 83741-35-9
| CAS No. | 83741-35-9 |
| Molecular Formula | C7H5BrN2 |
| Molecular Weight | 197.03 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 4-Bromo-1H-benzoimidazole.
4-Bromo-1H-benzoimidazole (CAS 83741-35-9) is a high-purity analytical reference standard with the molecular formula C7H5BrN2 and a molecular weight of 197.03 g/mol.
Owing to a nitrile group, bromine substitution, an aromatic ring system, 4-Bromo-1H-benzoimidazole is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 197.03 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C7H5BrN2 |
| Molecular Weight | 197.03 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
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- Methyl 2-bromo-4-hydroxybutanoate (CAS 111044-01-0)
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Recommended Standards
- 4-Amino-2-bromobenzonitrile (CAS 53312-82-6)
- 4-Bromo-2-ethynylphenol (CAS 2228319-60-4)
- 3-Bromopyrazolo[1,5-a]pyridine (CAS 5910-12-3)
- 4-Bromo-3-methyl-pyridine-2-carbonitrile (CAS 886372-11-8)
- N-(4-chlorophenyl)-2-((3-ethyl-4-oxo-7-(p-tolyl)-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1040632-52-7)
- 1-(3-Methoxybenzyl)imidazolidin-2-one (CAS 1140242-92-7)
- 1H-Pyrrolo[2,3-b]pyridine-6-carbaldehyde hydrate (CAS 1822948-66-2)
- (S)-But-3-en-2-amine Hydrochloride (CAS 153451-37-7)
- 4-Bromo-1-(2-methanesulfonylethyl)-3,5-dimethyl-1h-pyrazole (CAS 1247899-26-8)
- 3-Isopropyl-6-methoxy-5-methylpyrazin-2-amine (CAS 93034-75-4)
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- Ethyl 4-(4-chlorophenyl)-2-methyl-6-oxo-1,4,5,6-tetrahydropyridine-3-carboxylate (CAS 329700-15-4)
- 3,4-Methylenedioxy Methamphetamine-d5 (CAS 136765-43-0)
- Semaglutide Impurity 21(HO-Ste-L-γGlu-AEEA-AEEA-OH) (CAS 1335440-44-2)
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