Description

18-Crown-5 [4-(2,4-Dinitrophenylazo)Phenol] is a specialized crown ether derivative functionalized with an azo dye chromophore. This compound matters for its dual functionality, combining the selective cation-binding properties of a crown ether with the photophysical and chromogenic characteristics of an azo dye. It is primarily needed by researchers and developers in analytical chemistry, materials science, and supramolecular chemistry for applications such as ion-selective sensors, photoresponsive materials, and as a model compound in host-guest interaction studies.

Application

• Development of ion-selective optical sensors and probes for alkali and alkaline earth metal cations.
• Key intermediate in the synthesis of photoresponsive crown ethers for light-controlled molecular switches and machines.
• Research reagent for studying supramolecular host-guest complexation and colorimetric recognition events.
• Potential use as a chromogenic agent in analytical test kits for cation detection.
• Building block for advanced functional materials, including polymers and surfaces with tunable ion-binding properties.
• Academic and industrial R&D for exploring novel chemodosimeters and molecular logic gates.

Basic Information

Product Name	18-Crown-5 [4-(2,4-Dinitrophenylazo)Phenol]
CAS No.	81238-58-6
Molecular Formula	C22H26N4O8
Molecular Weight	474.47 g/mol
Synonyms	4-[(2,4-Dinitrophenyl)azo]-1,7,10,13,16-pentaoxa-4-azacyclooctadec-4-en-18-ol; 1-Aza-18-crown-5 ether, 4-(2,4-dinitrophenylazo)phenol derivative; 4-(2,4-Dinitrophenylazo)phenol-18-crown-5 conjugate; Azo-functionalized 18-crown-5; Chromogenic crown ether; DNPA-18-crown-5; Ionophore-azo dye hybrid; Light-sensitive crown ether derivative
EINECS	Contact for details

Quality Control

Our 18-Crown-5 [4-(2,4-Dinitrophenylazo)Phenol] is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and spectroscopic methods for structural confirmation, to ensure it meets the high standards required for research and development. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and assay is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Due to its light-sensitive nature, prolonged exposure to light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Orange to red crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm

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