((1E,1'E)-(2,5-Diethynyl-1,4-phenylene)bis(ethene-2,1-diyl))dibenzene CAS 942125-71-5
| CAS No. | 942125-71-5 |
| Molecular Formula | C26H18 |
| Molecular Weight | 330.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including ((1E,1'E)-(2,5-Diethynyl-1,4-phenylene)bis(ethene-2,1-diyl))dibenzene.
CATO supplies ((1E,1'E)-(2,5-Diethynyl-1,4-phenylene)bis(ethene-2,1-diyl))dibenzene (CAS 942125-71-5), a certified reference material (molecular formula C26H18, MW 330.42 g/mol) for analytical method development and quality control.
The molecular framework of ((1E,1'E)-(2,5-Diethynyl-1,4-phenylene)bis(ethene-2,1-diyl))dibenzene (C26H18) is characterized by a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C26H18 |
| Molecular Weight | 330.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
Recommended Standards
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