2-Bromo-3-nitropyridine CAS 19755-53-4
| CAS No. | 19755-53-4 |
| Molecular Formula | C5H3BrN2O2 |
| Molecular Weight | 202.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Bromo-3-nitropyridine (CAS 19755-53-4), molecular formula C5H3BrN2O2 and molecular weight 202.99 g/mol, is a CATO reference standard with documented purity and traceability.
2-Bromo-3-nitropyridine (C5H3BrN2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | 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.) | 1962 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 3-Bromo-5-nitropyridine (CAS 15862-30-3)
- 2-Bromo-4-nitropyridine (CAS 6945-67-1)
- 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)
- 6-Bromopyridazine-4-carboxylic acid (CAS 1402665-33-1)
- Sodium 5-cyano-3-methylpicolinate (CAS 1956318-79-8)
- 2-Amino-7-methyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyridine-3-carbonitrile (CAS 2138031-86-2)
- 1-((1-(Allyloxy)propan-2-yl)oxy)propan-2-ol (CAS 55956-25-7)
- 2-(3-Azabicyclo[3.3.1]nonan-9-ylidene)acetic acid (CAS 1935556-11-8)
- 4,4,5,5-Tetramethyl-2-(6-(phenanthren-9-yl)naphthalen-2-yl)-1,3,2-dioxaborolane (CAS 1229235-82-8)
- 1-(4-((Cyclopropylamino)methyl)piperidin-1-yl)ethanone (CAS 1353975-61-7)
- 2-Bromo-4-(pentafluoro-lambda6-sulfanyl)phenol (CAS 1426290-12-1)
- 1-(4-((5-Aminopentyl)amino)-7-chloroquinolin-3-yl)-2,2,2-trifluoroethanone hydrochloride (CAS 1956386-31-4)
- (2,5-Dimethoxyphenyl)(furan-3-yl)methanol (CAS 1281685-32-2)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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