2,2'-Dibromo-4,4'-di-tert-Butyl-1,1'-biphenyl CAS 70728-93-7
| CAS No. | 70728-93-7 |
| Molecular Formula | C20H24Br2 |
| Molecular Weight | 424.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,2'-Dibromo-4,4'-di-tert-Butyl-1,1'-biphenyl (CAS 70728-93-7) is a high-purity analytical reference standard with the molecular formula C20H24Br2 and a molecular weight of 424.21 g/mol.
Based on its molecular formula C20H24Br2, 2,2'-Dibromo-4,4'-di-tert-Butyl-1,1'-biphenyl contains bromine substitution, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 424.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2,2'-Dibromo-4,4'-di-tert-Butyl-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 | C20H24Br2 |
| Molecular Weight | 424.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1977 |
| Halogen Content | Br-containing |
Related Dibromo Standards
- (3,5-dibromo-4-methylphenyl)(2-ethyl-1-benzofuran-3-yl)methanol (CAS 1803598-50-6)
- 4,6-Dibromo-2-(4-(tert-butyl)phenyl)benzo[d]oxazol-5-amine (CAS 637303-01-6)
- 1,8-Dibromo-4,5-bis(methylamino)anthracene-9,10-dione (CAS 62062-72-0)
- 3-((2,4-Dibromo-6-nitrophenyl)amino)pyrazine-2,5-dicarbonitrile (CAS 918410-42-1)
- (4,5-Dibromo-6-oxopyridazin-1(6H)-yl)methyl 2,6-difluorobenzoate (CAS 439108-08-4)
- 2,3-Dibromo-6-fluoro-5-iodobenzoic acid (CAS 1160573-40-9)
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Recommended Standards
- DTCO7-2Br (CAS 1327334-59-7)
- 5-(4-Bromophenyl)-2-methyl-1-(3-(trifluoromethyl)phenyl)-1H-pyrrole-3-carboxylic acid (CAS 881040-06-8)
- DTCO26-2Br (CAS 1194605-76-9)
- Bis(2-chlorophenyl) (3-methoxyphenyl)phosphoramidate (CAS 76168-16-6)
- 5-Chloro-3-(4-Chloro-2-fluorophenyl)-1,2-oxazole-4-carbaldehyde (CAS 1354937-95-3)
- 2-(2-Chloro-5-(difluoromethyl)-6-hydroxypyridin-3-yl)acetonitrile (CAS 1804670-76-5)
- n,n-Diethyl-3-(2-hydroxyphenyl)propanamide (CAS 14290-45-0)
- Methyl 6-(((tert-butoxycarbonyl)amino)methyl)-4-formylpicolinate (CAS 1393538-57-2)
- N-(3-Ethynylpyridin-4-yl)acetamide (CAS 1935225-86-7)
- 2-(4-(Phenylsulfonyl)piperazin-1-yl)ethan-1-amine (CAS 937650-36-7)
- 13290-51-2 2,5-bis[(dimethylamino)methyl]cyclopentanone dihydrochloride R4343 (CAS 13290-51-2)
- 1-(Benzyloxy)-7-cyclopropyl-6-fluoroisoquinoline (CAS 923022-60-0)
- 3-Iodo-2-methoxypyridine (CAS 112197-15-6)
- Semaglutide impurity 260 (CAS CATO-C4X-2226260)
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