4-Bromo-3-chloro-2-nitropyridine CAS 1805584-61-5
| CAS No. | 1805584-61-5 |
| Molecular Formula | C5H2BrClN2O2 |
| Molecular Weight | 237.44 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.
CATO supplies 4-Bromo-3-chloro-2-nitropyridine (CAS 1805584-61-5), a certified reference material (molecular formula C5H2BrClN2O2, MW 237.44 g/mol) for analytical method development and quality control.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution, 4-Bromo-3-chloro-2-nitropyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 237.44 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C5H2BrClN2O2 |
| Molecular Weight | 237.44 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.) | 1995 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 6-Bromo-5-chloropyrazine-2-carboxylic acid (CAS 1017604-40-8)
- 4-Bromo-3-chloro-5-nitropyridine (CAS 1072141-30-0)
- 5-Bromo-2-chloro-4-nitropyridine (CAS 1082041-27-7)
- 2-Bromo-4-chloro-5-nitropyridine (CAS 1137475-57-0)
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- 4-Bromo-2-chloro-5-nitropyridine (CAS 1261767-18-3)
Recommended Standards
- 4-Bromo-2-chloro-6-nitropyridine (CAS 1805577-04-1)
- 2-Bromo-4-chloro-6-nitropyridine (CAS 1807020-19-4)
- 6-Bromo-3-chloro-2-nitropyridine (CAS 1805485-96-4)
- 3-Bromo-2-chloro-6-nitropyridine (CAS 1807220-64-9)
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