2,2'-Dihydroxy-5,5'-dibromobiphenyl CAS 34261-55-7
| CAS No. | 34261-55-7 |
| Molecular Formula | C12H8Br2O2 |
| Molecular Weight | 344.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, 2,2'-Dihydroxy-5,5'-dibromobiphenyl is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 344.00 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.
2,2'-Dihydroxy-5,5'-dibromobiphenyl (CAS 34261-55-7) is a high-purity analytical reference standard with the molecular formula C12H8Br2O2 and a molecular weight of 344.00 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.
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 | C12H8Br2O2 |
| Molecular Weight | 344.00 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, 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.) | 1966 |
| Halogen Content | Br-containing |
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Recommended Standards
- 2,2'-Dibromo-[1,1'-biphenyl]-4,4'-diol (CAS 84530-62-1)
- 4,5-Dibromo-3-methylcyclohexane-1,2-dicarboxylic acid (CAS 65941-85-7)
- 3,3'-Dibromo-4,4'-dihydroxybiphenyl (CAS 189039-64-3)
- 4-Bromo-2-(3-bromophenyl)-5-methylpyridazin-3(2H)-one (CAS 68143-27-1)
- (S,R,S)-AHPC-C4-NH2 (CAS 2138439-53-7)
- 2-(3,5-Dimethylisoxazol-4-yl)-N-hydroxyacetimidamide (CAS 102390-29-4)
- 2,4-Dichloro-3,7,7-trimethyl-7,8-dihydro-5H-pyrano[4,3-b]pyridine (CAS 2768870-96-6)
- tert-Butyl (2-iodo-5-(trifluoromethyl)phenyl)carbamate (CAS 1448535-57-6)
- 6-Bromo-3-iodo-1-(phenylsulfonyl)-1H-pyrrolo[3,2-b]pyridine (CAS 1305324-97-3)
- 4-fluoro-4-[3-(trifluoromethoxy)phenyl]piperidine hydrochloride (CAS 1803611-68-8)
- tert-Butyl N-[3-bromo-2-(4-methoxyphenyl)propyl]carbamate (CAS 1909336-30-6)
- Isoquinolin-4-yl(2-methoxyphenyl)methanone (CAS 1187165-76-9)
- 2-Iodoquinoxaline (CAS 36856-92-5)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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