3,4-Dibromo-2-chloropyridine CAS 134039-99-9
| CAS No. | 134039-99-9 |
| Molecular Formula | C5H2Br2ClN |
| Molecular Weight | 271.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,4-Dibromo-2-chloropyridine (CAS 134039-99-9) is a high-purity analytical reference standard with the molecular formula C5H2Br2ClN and a molecular weight of 271.34 g/mol.
Based on its molecular formula C5H2Br2ClN, 3,4-Dibromo-2-chloropyridine contains a nitrile group, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 271.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 3,4-Dibromo-2-chloropyridine 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 | C5H2Br2ClN |
| Molecular Weight | 271.34 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 methanol, acetonitrile, DMSO |
| 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.) | 1995 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 1 |
Related Dibromo Standards
- 2,5-Dibromo-4-chloropyridine (CAS 1033203-47-2)
- 2,6-Dibromo-4-chloropyridine (CAS 1196156-59-8)
- 2,4-Dibromo-6-chloropyridine (CAS 1206249-48-0)
- 3,4-Dibromo-5-chloropyridine (CAS 1335051-91-6)
- 3,5-Dibromo-4-chloropyridine (CAS 13626-17-0)
- 2,3-Dibromo-5-chloropyridine (CAS 137628-17-2)
- 2,3-Dibromo-4-chloropyridine (CAS 1379300-99-8)
- 2,5-Dibromo-3-chloropyridine (CAS 160599-70-2)
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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