(E)-1,2-bis(4-Chlorophenyl)ethene CAS 1657-56-3

Purity 97%+In StockPharmaceutical Standards
CAS No.1657-56-3
Molecular FormulaC14H10Cl2
Molecular Weight249.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(E)-1,2-bis(4-Chlorophenyl)ethene CAS 1657-56-3 chemical structure

Description

(E)-1,2-bis(4-Chlorophenyl)ethene (CAS 1657-56-3) is a high-purity analytical reference standard with the molecular formula C14H10Cl2 and a molecular weight of 249.14 g/mol.

The molecular framework of (E)-1,2-bis(4-Chlorophenyl)ethene (C14H10Cl2) is characterized by chlorine substitution, 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.

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.

CATO manufactures (E)-1,2-bis(4-Chlorophenyl)ethene 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 FormulaC14H10Cl2
Molecular Weight249.14 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentCl-containing

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