1,4-Dibromo-2,5-difluoro-3-nitrobenzene CAS 702640-58-2
| CAS No. | 702640-58-2 |
| Molecular Formula | C6HBr2F2NO2 |
| Molecular Weight | 316.88 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.
1,4-Dibromo-2,5-difluoro-3-nitrobenzene (CAS 702640-58-2) is a high-purity analytical reference standard with the molecular formula C6HBr2F2NO2 and a molecular weight of 316.88 g/mol.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine/bromine substitution, an aromatic ring system, 1,4-Dibromo-2,5-difluoro-3-nitrobenzene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 316.88 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.
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 | C6HBr2F2NO2 |
| Molecular Weight | 316.88 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 |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1985 |
| Halogen Content | F/Br-containing |
| Nitrogen Atoms | 1 |
Related Dibromo Standards
- 1,4-Dibromo-2,3-difluoro-5-nitrobenzene (CAS 1360726-52-8)
- 2,4-Dibromo-1,5-difluoro-3-nitrobenzene (CAS 144450-58-8)
- 2,3-Dibromo-5,6-difluoronitrobenzene (CAS 1481-57-8)
- 1,2-Dibromo-3,5-difluoro-4-nitrobenzene (CAS 1803715-37-8)
- 1,3-Dibromo-2,5-difluoro-4-nitrobenzene (CAS 1803789-51-6)
- 1,3-Dibromo-2,4-difluoro-6-nitrobenzene (CAS 1803835-24-6)
- 1,5-Dibromo-2,4-difluoro-3-nitrobenzene (CAS 1804413-71-5)
- 1,4-Dibromo-3,5-difluoro-2-nitrobenzene (CAS 1804938-00-8)
Recommended Standards
- 5-Bromo-4-iodo-1H-pyrazole-3-carboxylic acid (CAS 1934264-98-8)
- 2,6-Dibromo-3,5-difluoroisonicotinic acid (CAS 325461-60-7)
- 4-Bromo-5-iodofuran-2-carboxylic acid (CAS 19303-42-5)
- 4-Bromo-5-fluoro-2-iodophenol (CAS 1226879-58-8)
- H-Met-βNA (CAS 7424-16-0)
- 5-((Methylamino)methyl)-1,2-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-4-one (CAS 890647-74-2)
- [2-(dimethylamino)ethyl]urea hydrochloride (CAS 142713-75-5)
- 2-{4-[(3-fluorophenyl)methoxy]phenyl}-4-(4-methoxyphenyl)pyrimidine (CAS 477862-65-0)
- 5-((6-((2-Aminoethyl)amino)pyrimidin-4-yl)amino)pyrazine-2-carbonitrile (CAS 1137475-22-9)
- 2,1,3-Benzothiadiazole-4,7-diboronic acid (CAS 1332458-85-1)
- 2-(2-Formyl-1H-pyrrol-1-yl)thiophene-3-carbonitrile (CAS 68593-68-0)
- (5-Chloro-2-fluorophenyl)methanesulfonamide (CAS 1394042-52-4)
- 5-Chloro-4-(trifluoromethyl)pyrimidin-2-amine (CAS 1805481-71-3)
- Endo-Pro36-Tirzepatide (CAS CATO-CPTD788688)
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