3-Bromo-4-hydroxy-5-nitropyridine CAS 31872-65-8
| CAS No. | 31872-65-8 |
| Molecular Formula | C5H3BrN2O3 |
| Molecular Weight | 218.99 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H3BrN2O3, 3-Bromo-4-hydroxy-5-nitropyridine contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 218.99 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).
CATO supplies 3-Bromo-4-hydroxy-5-nitropyridine (CAS 31872-65-8), a certified reference material (molecular formula C5H3BrN2O3, MW 218.99 g/mol) for analytical method development and quality control.
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.
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 | C5H3BrN2O3 |
| Molecular Weight | 218.99 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 methanol, ethanol, DMSO, water |
| 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.) | 1966 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 2-Bromo-4-nitropyridin-3-ol (CAS 1013642-97-1)
- 3-Bromo-2-oxo-2H-pyran-5-carboxylic acid (CAS 108723-62-2)
- 6-Bromo-3-hydroxypyrazine-2-carboxylic acid (CAS 1260667-67-1)
- 5-Bromo-6-hydroxypyrimidine-4-carboxylic acid (CAS 135274-82-7)
- 3-Bromo-2-hydroxy-5-nitropyridine (CAS 15862-33-6)
- 2-Bromo-6-nitropyridin-3-ol (CAS 167683-72-9)
- 3-Bromo-4-nitropyridine 1-Oxide (CAS 1678-49-5)
- 5-Bromo-6-oxo-1,6-dihydropyridazine-3-carboxylic acid (CAS 1781856-45-8)
Recommended Standards
- 2-Bromo-6-nitropyridin-4-ol (CAS 54079-65-1)
- 3-bromo-5-nitropyridin-4(1H)-one (CAS 70149-42-7)
- 2-Bromo-5-nitropyridin-4-ol (CAS 54079-67-3)
- 5-Bromo-2,6-dioxo-1,2,3,6-tetrahydropyrimidine-4-carbaldehyde (CAS 22724-20-5)
- 4-Amino-4-(3-fluoro-4-methoxyphenyl)butanoic acid (CAS 1155569-00-8)
- 5-(Pyridin-2-yl)piperazin-2-one (CAS 1498937-97-5)
- 2-chloro-6-(1H-pyrazol-1-yl)-7H-purine (CAS 1566727-04-5)
- 2-(4-Fluorophenyl)ethene-1-sulfonamide (CAS 1094203-50-5)
- 4-Bromo-3-cyclopropoxyaniline (CAS 1243355-48-7)
- 2-Hydroxy-N-[5-(methoxymethyl)-1,3,4-thiadiazol-2-yl]benzamide (CAS 893778-57-9)
- 594-57-0 2-Chloro-2,3-dimethylbutane DTXSID40208124 (CAS 594-57-0)
- (2E)-7-Chloro-2-{[(3-chlorophenyl)amino]methylidene}-3,4-dihydro-2H-1,4-benzothiazin-3-one (CAS 338417-09-7)
- 3,9-Di-tert-butyl 6-ethyl 7-oxo-3,9-diazabicyclo[3.3.1]nonane-3,6,9-tricarboxylate (CAS 2089463-50-1)
- Semaglutide impurity 109 (CAS CATO-C4X-2226109)
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