5-Amino-2-bromo-4-nitrophenol CAS 855836-08-7
| CAS No. | 855836-08-7 |
| Molecular Formula | C6H5BrN2O3 |
| Molecular Weight | 233.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Amino-2-bromo-4-nitrophenol (CAS 855836-08-7), molecular formula C6H5BrN2O3 and molecular weight 233.02 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C6H5BrN2O3, 5-Amino-2-bromo-4-nitrophenol contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 233.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
Physical & Chemical Properties
| Molecular Formula | C6H5BrN2O3 |
| Molecular Weight | 233.02 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Amino Standards
- 2-Amino-4-bromo-6-nitrophenol (CAS 139138-08-2)
- 2-Amino-6-bromo-4-nitrophenol (CAS 185335-67-5)
- 2-Amino-3-bromo-5-nitrophenol (CAS 915156-09-1)
- 2-Amino-5-bromo-3-nitrophenol (CAS 867338-56-5)
- 4-Amino-3-bromo-2,5-difluorobenzonitrile (CAS 112279-62-6)
- 2-amino-5-bromo-3,6-difluorobenzonitrile (CAS 1548512-18-0)
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Recommended Standards
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- 5-Bromo-2,3-dihydroxybenzoic Acid (CAS 72517-15-8)
- trans-tert-Butyl-3-(hydroxymethyl)-3-nitrocyclobutane-1-carboxylate (CAS 2135785-58-7)
- 2,5-Dimethyl-1-(2-methylpropyl)-1H-pyrrole-3-carbaldehyde (CAS 730950-24-0)
- Mil-53(Fe) (CAS 764608-47-1)
- 2,2-Dimethyl-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 10514-70-2)
- 3-(Pyridin-4-yl)-5-(trifluoromethyl)picolinonitrile (CAS 1214371-85-3)
- 5-((4-Chlorophenyl)sulfonyl)-2-(propylthio)thiazol-4-amine (CAS 494763-20-1)
- 1,7-Diazaspiro[4.4]nonan-6-one hydrochloride (CAS 1203682-72-7)
- [(3-Fluorophenyl)methyl](2-methylpropyl)amine (CAS 1019578-68-7)
- (S)-(1-Ethylpyrrolidin-2-yl)methanol (CAS 35120-34-4)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
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