2-Bromo-3,5,6-trimethylpyrazine CAS 820250-41-7
| CAS No. | 820250-41-7 |
| Molecular Formula | C7H9BrN2 |
| Molecular Weight | 201.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 2-Bromo-3,5,6-trimethylpyrazine (CAS 820250-41-7), a certified reference material (molecular formula C7H9BrN2, MW 201.06 g/mol) for analytical method development and quality control.
The molecular framework of 2-Bromo-3,5,6-trimethylpyrazine (C7H9BrN2) is characterized by a nitrile group, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H9BrN2 |
| Molecular Weight | 201.06 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-1-cyclobutylpyrazole (CAS 1002309-50-3)
- 4-Bromo-5-methylbenzene-1,2-diamine (CAS 102169-44-8)
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Recommended Standards
- 2-Bromo-2-phenylethanol (CAS 41252-83-9)
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- 2-Bromo-1-methoxy-3-methylbenzene (CAS 38197-43-2)
- 2-Bromo-4,5-dimethylphenol (CAS 22802-39-7)
- 4-Bromo-7-hydroxy-6-nitro-2,3-dihydro-1H-inden-1-one (CAS 90792-61-3)
- N-(2,4-dinitrophenyl)-1-methylpiperidin-4-amine (CAS 925216-76-8)
- 2-(Benzyloxy)-1-fluoro-4-methylbenzene (CAS 1260881-29-5)
- 5,5'-(Terephthaloylbis(azanediyl))diisophthalic acid (CAS 120360-52-3)
- (S)-2,2,2-Trifluoro-1-(4-iodophenyl)ethan-1-amine (CAS 1213426-87-9)
- Papaveroxine (CAS 106982-92-7)
- 2-(Chloromethyl)-5-(difluoromethyl)-6-iodo-3-nitropyridine (CAS 1805103-74-5)
- 2,2-Dichloro-N-(4-tosylphenyl)acetamide (CAS 339104-58-4)
- 5-Ethyl-3,3-dimethylmorpholine (CAS 938374-24-4)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
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