3-Bromo-2,6-dichloro-5-nitropyridine CAS 2091687-88-4
| CAS No. | 2091687-88-4 |
| Molecular Formula | C5HBrCl2N2O2 |
| Molecular Weight | 271.88 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Bromo-2,6-dichloro-5-nitropyridine is closely related to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Bromo-2,6-dichloro-5-nitropyridine (CAS 2091687-88-4) is a high-purity analytical reference standard with the molecular formula C5HBrCl2N2O2 and a molecular weight of 271.88 g/mol.
The molecular framework of 3-Bromo-2,6-dichloro-5-nitropyridine (C5HBrCl2N2O2) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. 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.
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 | C5HBrCl2N2O2 |
| Molecular Weight | 271.88 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 sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 4-Bromo-2,6-dichloro-3-nitropyridine (CAS 1807697-58-0)
- 3-Bromo-2,4-dichloro-5-nitropyridine (CAS 850180-82-4)
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Recommended Standards
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- 3,5-Dibromodihydro-2H-pyran-2,6(3H)-dione (CAS 121049-89-6)
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- Fluocortolone Impurity 12 (CAS 66233-46-3)
- 2-(2-Chloropyrimidin-4-yl)ethanamine (CAS 1393568-29-0)
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