7-Bromo-2-methylquinoxaline CAS 76982-27-9
| CAS No. | 76982-27-9 |
| Molecular Formula | C9H7BrN2 |
| Molecular Weight | 223.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7-Bromo-2-methylquinoxaline is closely related to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
7-Bromo-2-methylquinoxaline (CAS 76982-27-9) is a high-purity analytical reference standard with the molecular formula C9H7BrN2 and a molecular weight of 223.07 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, 7-Bromo-2-methylquinoxaline is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 223.07 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.
CATO manufactures 7-Bromo-2-methylquinoxaline 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 | C9H7BrN2 |
| Molecular Weight | 223.07 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3-Bromo-4-(1H-pyrrol-1-yl)pyridine (CAS 1019117-09-9)
- 2-Bromo-1-phenyl-1h-imidazole (CAS 1034566-05-6)
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- 1-Bromo-4-methylphthalazine (CAS 1153525-71-3)
Recommended Standards
- 7-Bromo-2-methylquinazoline (CAS 552331-87-0)
- 7-Bromo-5-methylquinoxaline (CAS 532934-95-5)
- 7-Bromo-2-methyl-1,5-naphthyridine (CAS 2489240-15-3)
- 7-Bromoquinolin-4-amine (CAS 65340-74-1)
- C.I. Acid Orange 6 (Free Acid) (CAS 2050-34-2)
- 7-Iodo-4-(trifluoromethyl)indoline-2,3-dione (CAS 259667-74-8)
- N-(3-Chlorophenyl)-2-cyano-3-(5-phenylfuran-2-yl)acrylamide (CAS 304896-17-1)
- 1-(3-(Trifluoromethyl)pyridin-2-yl)ethan-1-ol (CAS 1823889-24-2)
- 5-Fluoro-4H-chromene (CAS 1935297-56-5)
- 3-(Trifluoromethyl)pyrazine 1-oxide (CAS 61655-68-3)
- 2-Methyl-4,5,6,7-tetrahydro-1H-benzoimidazole (CAS 3291-07-4)
- 3-Ethylpyridine-4-thiol (CAS 102000-65-7)
- 3-Bromo-4-(perfluoroethyl)pyridine (CAS 1816286-96-0)
- (Des-Bromo)-Neuropeptide B (1-23) (human) (CAS 434897-64-0)
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