2-bromo-3-chloro-pyrazine CAS 1206250-01-2
| CAS No. | 1206250-01-2 |
| Molecular Formula | C4H2BrClN2 |
| Molecular Weight | 193.43 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-bromo-3-chloro-pyrazine (CAS 1206250-01-2) is a high-purity analytical reference standard with the molecular formula C4H2BrClN2 and a molecular weight of 193.43 g/mol.
Structurally, 2-bromo-3-chloro-pyrazine (C4H2BrClN2) contains a nitrile group, chlorine/bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 193.43 g/mol, it falls into the medium-molecular-weight range. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-bromo-3-chloro-pyrazine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C4H2BrClN2 |
| Molecular Weight | 193.43 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related bromo Standards
- 2-Bromo-5-chloropyrimidine (CAS 124405-67-0)
- 4-Bromo-5-chloropyrimidine (CAS 1261628-82-3)
- 4-Bromo-6-chloropyrimidine (CAS 126401-90-9)
- 4-Bromo-3-chloropyridazine (CAS 1393545-85-1)
- 2-Bromo-5-chloropyrazine (CAS 912773-21-8)
- 3-Bromo-6-chloropyridazine (CAS 89089-18-9)
- 4-Bromo-2-chloropyrimidine (CAS 885702-34-1)
- 5-Bromo-4-chloropyrimidine (CAS 56181-39-6)
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