5-Bromo-3-chloro-N,N-dimethylpyrazin-2-amine CAS 1934835-77-4
| CAS No. | 1934835-77-4 |
| Molecular Formula | C6H7BrClN3 |
| Molecular Weight | 236.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Bromo-3-chloro-N,N-dimethylpyrazin-2-amine (CAS 1934835-77-4) is a high-purity analytical reference standard with the molecular formula C6H7BrClN3 and a molecular weight of 236.50 g/mol.
Structurally, 5-Bromo-3-chloro-N,N-dimethylpyrazin-2-amine (C6H7BrClN3) contains a nitrile group, chlorine/bromine substitution, an aromatic ring system. 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 236.50 g/mol, it falls into the medium-molecular-weight range. 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 | C6H7BrClN3 |
| Molecular Weight | 236.50 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 3 |
Related Bromo Standards
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