Description

[2,5]-Dibenzo-21-Crown-7 CAS NO 14098-41-0 is a specialized macrocyclic polyether compound belonging to the crown ether family, known for its selective binding affinity for specific alkali metal cations. This compound matters for its role as a highly effective phase-transfer catalyst and complexing agent, enabling critical reactions and separations in advanced chemical synthesis. It is primarily needed by researchers and manufacturers in the pharmaceutical, fine chemical, and materials science industries for applications requiring precise molecular recognition and ion transport.

Application

• Phase-Transfer Catalysis (PTC): Facilitates reactions between reagents in immiscible phases, enhancing reaction rates and yields in organic synthesis.
• Ion-Selective Electrodes & Sensors: Serves as an ionophore in membrane formulations for detecting specific alkali metal ions like potassium or cesium.
• Metal Ion Extraction & Separation: Used in solvent extraction processes to selectively separate and purify metal cations from complex mixtures.
• Supramolecular Chemistry & Host-Guest Systems: Acts as a molecular host for constructing complex architectures and studying non-covalent interactions.
• Polymer & Materials Modification: Incorporated into polymers to alter ion transport properties for specialized membrane applications.
• Analytical Chemistry: Employed as a masking agent or complexant in chromatographic separations and spectroscopic analysis.
• Chemical Research & Development: A key reagent for exploring new synthetic methodologies and catalytic cycles in academic and industrial labs.

Basic Information

Product Name	[2,5]-Dibenzo-21-Crown-7
CAS No.	14098-41-0
Molecular Formula	C22H28O7
Molecular Weight	404.45 g/mol
Synonyms	2,5-Dibenzo-21-crown-7; 21-Crown-7, 2,5-dibenzo-; DB21C7; 1,4,7,10,13,16,19-Heptaoxacyclohenicosane-2,5-diyldibenzene; Benzo-21-crown-7; 2,5-Dibenzo-1,4,7,10,13,16,19-heptaoxacyclohenicosane; 4',4''(5'')-Di(benzo)-21-crown-7
EINECS	Contact for details

Quality Control

Our [2,5]-Dibenzo-21-Crown-7 is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR/IR for structural confirmation, to ensure it meets the high standards required for research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). This compound is light-sensitive (store away from light) and should be kept under inert conditions if long-term stability is a concern.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.