(E)-1,2-Bis(3-bromophenyl)ethene CAS 23958-26-1
| CAS No. | 23958-26-1 |
| Molecular Formula | C14H10Br2 |
| Molecular Weight | 338.04 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (E)-1,2-Bis(3-bromophenyl)ethene is closely related to bromine substitution, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(E)-1,2-Bis(3-bromophenyl)ethene (CAS 23958-26-1), molecular formula C14H10Br2 and molecular weight 338.04 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (E)-1,2-Bis(3-bromophenyl)ethene (C14H10Br2) contains bromine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 338.04 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C14H10Br2 |
| Molecular Weight | 338.04 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Br-containing |
Recommended Standards
- (2,2-Dibromoethene-1,1-diyl)dibenzene (CAS 2592-73-6)
- (Z)-1,2-Dibromo-1,2-diphenylethene (CAS 3720-09-0)
- (E)-1,2-Bis(4-bromophenyl)ethene (CAS 18869-30-2)
- 2-(4-Amino-3-bromophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (CAS 637347-75-2)
- (2-Chloro-6-methoxyphenyl)methanamine (CAS 927902-53-2)
- 2-(Dimethylamino)-N,N,N-trimethylethanaminium chloride (CAS 57592-62-8)
- 125687-18-5 Phenyl-d5-hydrazine Monohydrochloride Phenylhydrazine-d5 Hydrochloride (CAS 125687-18-5)
- 5-Chloro-3,4-dihydropyrido[2,3-d]pyrimidin-2(1H)-one (CAS 1265634-75-0)
- 6-Hydroxy-1H-indole-2-carboxylic acid methyl ester (CAS 116350-38-0)
- 2,6-Difluoro-N-(2-(methylthio)benzo[d]thiazol-6-yl)benzamide (CAS 325988-79-2)
- 5-(4-Chlorobenzamido)-2-ethoxybenzenesulfonyl chloride (CAS 680617-88-3)
- Levonorgestrel Impurity 30 (CAS CATO-C4X-167730)
- 3-Amino-3-(pyridin-2-yl)propanenitrile (CAS 1270489-77-4)
- Insulin Degludec Impurity 5 (CAS CATO-C4X-21575)
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