4-Bromo-4'-nitro-1,1'-biphenyl CAS 6242-98-4
| CAS No. | 6242-98-4 |
| Molecular Formula | C12H8BrNO2 |
| Molecular Weight | 278.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 278.10 g/mol gives 4-Bromo-4'-nitro-1,1'-biphenyl distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Bromo-4'-nitro-1,1'-biphenyl (CAS 6242-98-4) is a high-purity analytical reference standard with the molecular formula C12H8BrNO2 and a molecular weight of 278.10 g/mol.
4-Bromo-4'-nitro-1,1'-biphenyl (C12H8BrNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, 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 | C12H8BrNO2 |
| Molecular Weight | 278.10 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 4'-Bromo-2-nitrobiphenyl (CAS 35450-34-1)
- 5-(2-Bromophenyl)nicotinic acid (CAS 887973-35-5)
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- 5-(3-Bromophenyl)nicotinic acid (CAS 924854-21-7)
- 2-(5-Methoxy-2-nitrophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1356943-81-1)
- Ethyl 3-(2-fluorophenyl)-3-methyloxirane-2-carboxylate (CAS 62351-38-6)
- (3-Bromophenyl)methanesulfonamide (CAS 919354-04-4)
- N-hydroxy-2-(trifluoromethyl)benzamide (CAS 40212-26-8)
- 4-Amino-6-MethoxyPyrimidine 6-methoxypyrimidin-4-amine 696-45-7 A9213 (CAS 696-45-7)
- 4-(2-Chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)morpholine (CAS 1361110-63-5)
- N-(3-Cyano-5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophen-2-yl)-2-(methyl(4-methylbenzyl)amino)acetamide (CAS 879837-43-1)
- 3-Bromo-1-iodonaphthalene (CAS 1261843-11-1)
- 2-(3-Mercaptophenyl)acetonitrile (CAS 685569-60-2)
- Semaglutide impurity 215 (CAS CATO-C4X-2226215)
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