5-Bromo-2-chlorobenzimidazole CAS 683240-76-8
| CAS No. | 683240-76-8 |
| Molecular Formula | C7H4BrClN2 |
| Molecular Weight | 231.48 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Bromo-2-chlorobenzimidazole is closely related to a nitrile group, chlorine/bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Bromo-2-chlorobenzimidazole (CAS 683240-76-8), molecular formula C7H4BrClN2 and molecular weight 231.48 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H4BrClN2, 5-Bromo-2-chlorobenzimidazole contains a nitrile group, chlorine/bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 231.48 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.
CATO manufactures 5-Bromo-2-chlorobenzimidazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H4BrClN2 |
| Molecular Weight | 231.48 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1985 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3-Bromo-4-chloro-1H-pyrrolo[2,3-b]pyridine (CAS 1000340-39-5)
- 6-Bromo-4-chloro-1H-pyrrolo[2,3-b]pyridine (CAS 1000340-64-6)
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- 4-Bromo-7-chloro-1H-pyrrolo[3,2-c]pyridine (CAS 1000341-81-0)
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Recommended Standards
- 5-Bromo-2-chloro-6-methylnicotinonitrile (CAS 84703-18-4)
- 5-Bromo-3-chloro-7-azaindole (CAS 951626-91-8)
- 4-Bromo-7-chloro-1H-pyrrolo[2,3-c]pyridine (CAS 425380-38-7)
- 5-Bromo-3-chloroimidazo[1,2-a]pyridine (CAS 69214-13-7)
- 4,6-Dimethyl-2-(pyrrolidin-1-yl)pyridine-3-carbonitrile (CAS 693254-24-9)
- (E/Z)-Ozagrel (sodium) (CAS 130952-46-4)
- 4-(Morpholine-4-carbonyl)benzonitrile (CAS 87294-97-1)
- ML 334 (CAS 1432500-66-7)
- N-(3-aminobenzyl)-3-methoxypropanamide (CAS 1248725-35-0)
- N-Ethyl-4-methylbenzamide (CAS 26819-08-9)
- Phenylephrine Impurity 44 HCl (CAS 72511-88-7)
- 2-Fluoro-N-1-,N-1-dimethyl-1,4-benzenediamine (CAS 3824-31-5)
- N-(5-((2,5-Dimethylbenzyl)thio)-1,3,4-thiadiazol-2-yl)acetamide (CAS 868974-36-1)
- Semaglutide Impurity 4 (CAS CATO-C4X-22264)
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