2-Bromo-4-nitropyridine CAS 6945-67-1
| CAS No. | 6945-67-1 |
| Molecular Formula | C5H3BrN2O2 |
| Molecular Weight | 202.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-4-nitropyridine (CAS 6945-67-1) is a high-purity analytical reference standard with the molecular formula C5H3BrN2O2 and a molecular weight of 202.99 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, 2-Bromo-4-nitropyridine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 202.99 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 2-Bromo-4-nitropyridine 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 | C5H3BrN2O2 |
| Molecular Weight | 202.99 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3-Bromo-5-nitropyridine (CAS 15862-30-3)
- 2-Bromo-3-nitropyridine (CAS 19755-53-4)
- 2-Bromo-5-nitropyridine (CAS 4487-59-6)
- 3-Bromo-2-nitropyridine (CAS 54231-33-3)
- 3-Bromo-2-pyrazinecarboxylic acid (CAS 937669-80-2)
- 3-Bromo-4-nitropyridine (CAS 89364-04-5)
- 4-Bromo-3-nitropyridine (CAS 23056-44-2)
- 5-Bromo-2-pyrazinecarboxylic acid (CAS 876161-05-6)
Recommended Standards
- 5-Bromopyridazine-4-carboxylic acid (CAS 1807215-47-9)
- 6-Bromopyrimidine-4-carboxylic acid (CAS 1555494-28-4)
- 4-Bromopyrimidine-5-carboxylic acid (CAS 1522059-70-6)
- 3-Bromofuran-2,5-dicarbaldehyde (CAS 4805-99-6)
- 5-(O-tolyl)-3,9-diazaspiro[5.5]Undecan-2-one (CAS 2412710-72-4)
- (1E)-1-(5-Chloro-1-methyl-3-phenyl-1H-pyrazol-4-yl)-N-(4-chlorophenyl)methanimine (CAS 320422-65-9)
- 5-Methyl-1-(pyridin-3-ylmethyl)-1H-pyrazole-3-carboxylic acid (CAS 1517917-91-7)
- 1-Acetylpyrrolidine-2-carbothioamide (CAS 1342550-42-8)
- 2-(4-Chloro-5-methyl-3-trifluoromethyl-pyrazol-1-yl)-propionic acid (CAS 1005639-46-2)
- (S)-2-Methylazetidine Hydrochloride (CAS 935669-67-3)
- [3-Chloro-5-(trifluoromethyl)pyridin-2-yl](2,4-dichlorophenyl)methanol (CAS 303151-76-0)
- Methyl (2S)-2-{[(tert-butoxy)carbonyl]amino}-3-(thiophen-2-yl)propanoate (CAS 195510-15-7)
- Benzyl (3,3-dimethylcyclobutyl)carbamate (CAS 1529781-93-8)
- [pGlu] Semaglutide (CAS CATO-C4X-2226288)
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