4,4＇-Dibromo-2,2＇-dimethyl-1,1＇-biphenyl CAS 31458-17-0
| CAS No. | 31458-17-0 |
| Molecular Formula | C14H12Br2 |
| Molecular Weight | 340.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4＇-Dibromo-2,2＇-dimethyl-1,1＇-biphenyl (C14H12Br2) contains bromine substitution, a polycyclic aromatic system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
4,4＇-Dibromo-2,2＇-dimethyl-1,1＇-biphenyl (CAS 31458-17-0) is a high-purity analytical reference standard with the molecular formula C14H12Br2 and a molecular weight of 340.05 g/mol.
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.
As a certified reference material (CRM), 4,4＇-Dibromo-2,2＇-dimethyl-1,1＇-biphenyl meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H12Br2 |
| Molecular Weight | 340.05 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Halogen Content | Br-containing |
Related Dibromo Standards
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