((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene CAS 140477-37-8

Purity 97%+In StockPharmaceutical Standards
CAS No.140477-37-8
Molecular FormulaC26H22
Molecular Weight334.45 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

((2,3,5,6-Tetramethyl-1,4-phenylene)bis(ethyne-2,1-diyl))dibenzene CAS 140477-37-8 chemical structure

Description

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.

Physical & Chemical Properties

Molecular FormulaC26H22
Molecular Weight334.45 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)16.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1997

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