1,1′-[(1E)-1,2-Diphenyl-1,2-ethenediyl]bis[4-(bromomethyl)benzene] CAS 1345823-47-3
| CAS No. | 1345823-47-3 |
| Molecular Formula | C28H22Br2 |
| Molecular Weight | 518.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1,1′-[(1E)-1,2-Diphenyl-1,2-ethenediyl]bis[4-(bromomethyl)benzene] (CAS 1345823-47-3), molecular formula C28H22Br2 and molecular weight 518.28 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to bromine substitution, a polycyclic aromatic system, 1,1′-[(1E)-1,2-Diphenyl-1,2-ethenediyl]bis[4-(bromomethyl)benzene] is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 518.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 1,1′-[(1E)-1,2-Diphenyl-1,2-ethenediyl]bis[4-(bromomethyl)benzene] 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 | C28H22Br2 |
| Molecular Weight | 518.28 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) | 17.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Br-containing |
Related E Standards
- 1,4-Bis(1,5-diphenyl-4,5-dihydro-1H-pyrazol-3-yl)benzene (CAS 7267-75-6)
- 3-(9,9-Diphenyl-9H-fluoren-2-yl)fluoranthene (CAS 653590-82-0)
- 2-[({5-[(2,4-diphenyl-1,3-thiazol-5-yl)methyl]-1,3,4-oxadiazol-2-yl}sulfanyl)methyl]-5-fluoro-1,3-benzothiazole (CAS 861208-69-7)
- Diphenyl(spiro[fluorene-9,9'-xanthen]-2-yl)phosphine (CAS 1346002-85-4)
- 2-(4-(9,9-Diphenyl-9H-fluoren-2-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1813574-72-9)
- 1,4-Bis(4,5-diphenyl-1H-imidazol-2-yl)benzene (CAS 4051-59-6)
- (R)-Diphenyl(2'-phenyl-[1,1'-binaphthalen]-2-yl)phosphine (CAS 348617-10-7)
- (S)-Diphenyl(2'-phenyl-[1,1'-binaphthalen]-2-yl)phosphine (CAS 479079-13-5)
Recommended Standards
- 1,2-Bis(4-(bromomethyl)phenyl)-1,2-diphenylethene (CAS 1053241-67-0)
- 4,4'-(2,2-Diphenylethene-1,1-diyl)bis((bromomethyl)benzene) (CAS 1623085-88-0)
- 2,3,5-TriiodoÂbenzÂoyl chloride (CAS 42860-33-3)
- (S)-1-(p-Bromoacetamidobenzyl)ethylenediaminetetraacetic Acid (CAS 81677-64-7)
- 1-Ethyl-3-methylimidazole tetrafluoroborate (CAS 143314-16-3)
- (4-Bromo-5-methyl-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazol-3-yl)methanol (CAS 2569617-48-5)
- 2-Amino-5-ethynyl-4-(trifluoromethyl)pyridine (CAS 1321612-90-1)
- 1-(1,4-Dioxaspiro[4.5]Decan-8-yl)-1H-pyrazol-4-amine (CAS 2433769-82-3)
- cis-3,5-Dimethyl-1-piperidyl Phenyl Ketone (CAS 82860-55-7)
- Metoclopramide Impurity 92 (CAS CATO-C4X-141592)
- N-(2-(3-Methylisoxazol-5-yl)ethyl)-3-(1H-tetrazol-1-yl)benzamide (CAS 1421501-01-0)
- 1-(4-Bromo-1-methyl-1H-pyrazol-5-yl)-N,N-dimethylmethanesulfonamide (CAS 1710696-24-4)
- tert-Butyl 6-(trifluoromethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate (CAS 1935066-32-2)
- Biotinyl-Glucagon (1-29) (human, rat, porcine) trifluoroacetate salt (CAS 1802086-28-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com