6-Hydroxy-2,2',4,4'-tetrabromodiphenyl ether CAS 79755-43-4
| CAS No. | 79755-43-4 |
| Molecular Formula | C12H6Br4O2 |
| Molecular Weight | 501.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
6-Hydroxy-2,2',4,4'-tetrabromodiphenyl ether (CAS 79755-43-4) is a high-purity analytical reference standard with the molecular formula C12H6Br4O2 and a molecular weight of 501.79 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 6-Hydroxy-2,2',4,4'-tetrabromodiphenyl ether is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 501.79 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C12H6Br4O2 |
| Molecular Weight | 501.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Br-containing |
Related Hydroxy Standards
- 5-Hydroxy-2,2',4,4'-tetrabromodiphenylether (CAS 602326-30-7)
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Recommended Standards
- Methyl 4-((3-(4-chlorophenyl)-5-(2,3-dichlorophenyl)-6-oxo-5,6-dihydropyridazin-1(4H)-yl)methyl)benzoate (CAS 344282-79-7)
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- 3,3',5,5'-Tetrabromo-[1,1'-biphenyl]-2,2'-diol (CAS 21987-62-2)
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