7-Bromo-2,3-dimethylpyrido[2,3-b]pyrazine CAS 52333-43-4
| CAS No. | 52333-43-4 |
| Molecular Formula | C9H8BrN3 |
| Molecular Weight | 238.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 238.08 g/mol gives 7-Bromo-2,3-dimethylpyrido[2,3-b]pyrazine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 7-Bromo-2,3-dimethylpyrido[2,3-b]pyrazine (CAS 52333-43-4), a certified reference material (molecular formula C9H8BrN3, MW 238.08 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution, 7-Bromo-2,3-dimethylpyrido[2,3-b]pyrazine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 238.08 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H8BrN3 |
| Molecular Weight | 238.08 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.) | 1971 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
- 3-Bromo-7-methylquinolin-6-ol (CAS 1009812-19-4)
- 5-Bromo-1-methyl-1H-indole-3-carbaldehyde (CAS 10102-94-0)
- 5-Bromo-6-methylquinolin-2(1H)-one (CAS 1016316-14-5)
- 6-Bromo-8-methoxyquinoline (CAS 103028-32-6)
- 7-Bromo-6-methoxyquinoline (CAS 103028-33-7)
- 5-Bromo-7-methylquinolin-8-ol (CAS 103028-34-8)
- 3-Bromo-8-methoxyquinoline (CAS 103030-27-9)
- 7-Bromo-1-cyclopropyl-1H-imidazo[4,5-c]pyridine (CAS 1044771-36-9)
Recommended Standards
- 6-Bromo-N-methylquinazolin-2-amine, 97% (CAS 882670-77-1)
- 7-Bromo-2-methoxyquinoline (CAS 99455-08-0)
- 6-Bromo-8-methyl-1,4-dihydroquinolin-4-one (CAS 2345601-71-8)
- 7-Bromo-2-methylquinolin-4(1H)-one (CAS 56716-92-8)
- 3-[(4-Methyl-1-piperazinyl)methyl]aniline (CAS 198281-55-9)
- (S)-4-(2-Bromo-4-formylphenyl)-1-(tert-butoxy-carbonyl)piperazine-2-carboxylic acid 1786553-06-7 (CAS 1786553-06-7)
- 2-((3-Methylbut-2-en-1-yl)oxy)benzaldehyde (CAS 56074-73-8)
- 4-chloro-6-ethylthieno[2,3-d]pyrimidine (CAS 81136-42-7)
- 10-Hydroxy-10-methylanthracen-9(10H)-one (CAS 17104-31-3)
- 7-Bromo-1-ethyl-3,4-dihydropyrazino[2,3-b]pyrazin-2(1H)-one (CAS 1228014-19-4)
- Cefditoren Impurity 24 (CAS 2409806-43-3)
- (S)-2-Methyltetrahydrofuran (CAS 63798-12-9)
- Bis(4-aminophenyl)hydrogenphosphate (CAS 407578-85-2)
- Dulaglutide (CAS 923950-08-7)
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