Description

5,7-Dichloro-2,3-Dihydrothieno[3,4-b][1,4]dioxine is a specialized heterocyclic organic compound that serves as a critical building block in advanced material science and pharmaceutical research. Its unique fused dioxine-thiophene structure, functionalized with chlorine atoms, makes it a valuable precursor for synthesizing complex molecules with tailored electronic and optical properties. This high-purity intermediate is primarily sought by R&D chemists and process development scientists working on organic semiconductors, conductive polymers, and novel active pharmaceutical ingredients (APIs).

Application

• Organic Electronic Materials: A key monomer or precursor in the synthesis of conjugated polymers and small molecules for Organic Light-Emitting Diodes (OLEDs), Organic Photovoltaics (OPVs), and Organic Field-Effect Transistors (OFETs).
• Pharmaceutical Intermediates: Used in the research and development of novel drug candidates, particularly those requiring a functionalized dioxine-thiophene scaffold for biological activity.
• Agrochemical Synthesis: Serves as a building block for creating new generations of herbicides, fungicides, or insecticides with specific modes of action.
• Ligand and Catalyst Development: Utilized in organometallic chemistry to create novel chelating ligands for catalysis or metal-organic frameworks (MOFs).
• Dye and Pigment Chemistry: Acts as a core structure for developing new chromophores with specific light-absorption or emission characteristics.
• Academic and Industrial R&D: Employed in fundamental research exploring new chemical reactions, polymerization techniques, and structure-property relationships.

Basic Information

Product Name	5,7-Dichloro-2,3-Dihydrothieno[3,4-b][1,4]dioxine
CAS No.	225518-49-0
Molecular Formula	C6H4Cl2O2S
Molecular Weight	211.07 g/mol
Synonyms	5,7-Dichloro-2,3-dihydrothieno[3,4-b][1,4]dioxin; 2,3-Dihydro-5,7-dichlorothieno[3,4-b][1,4]dioxine; Thieno[3,4-b][1,4]dioxine, 5,7-dichloro-2,3-dihydro-; 5,7-Dichloro-2,3-dihydrothieno[3,4-b]dioxine; Dichlorodihydrothienodioxine
EINECS	Contact for details

Quality Control

We supply 5,7-Dichloro-2,3-Dihydrothieno[3,4-b][1,4]dioxine in high-purity grades suitable for demanding research and development applications. Our products undergo rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment. We adhere to a strict quality management system to guarantee the integrity and traceability of our advanced intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep the container tightly sealed in a dry environment to minimize exposure to moisture. Store away from incompatible materials.

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%
Heavy Metals	≤ 20 ppm

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