| CAS No. | 140477-37-8 |
| Molecular Formula | C26H22 |
| Molecular Weight | 334.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 334.45 g/mol gives ((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene (CAS 140477-37-8) is a high-purity analytical reference standard with the molecular formula C26H22 and a molecular weight of 334.45 g/mol.
The molecular framework of ((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene (C26H22) 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 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.
CATO manufactures ((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C26H22 |
| Molecular Weight | 334.45 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |