Description

2,5-Dichloro-Thieno[3,2-B]Thiophene-3,6-Dicarboxylic Acid Diethyl Ester is a high-value, multi-functional heterocyclic building block essential for advanced organic synthesis. This compound matters for its role as a key precursor in the development of novel materials with tailored electronic and optical properties. It is primarily needed by R&D chemists and process engineers in the pharmaceutical, agrochemical, and organic electronics industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a critical synthon in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting central nervous system disorders.
• Organic Semiconductor Precursor: Used in the development of novel organic field-effect transistors (OFETs) and organic photovoltaics (OPVs) due to its fused thiophene-thiophene core.
• Agrochemical Research: Acts as a building block for creating new herbicides and fungicides with enhanced efficacy and selectivity.
• Material Science: Employed in the synthesis of dyes, pigments, and conductive polymers for specialized coatings and electronic applications.
• Ligand Synthesis: Useful for constructing complex chelating ligands in coordination chemistry and catalysis.
• Academic & Industrial R&D: A valuable tool for exploring new chemical spaces and reaction methodologies in heterocyclic chemistry.

Basic Information

Product Name	2,5-Dichloro-Thieno[3,2-B]Thiophene-3,6-Dicarboxylic Acid Diethyl Ester
CAS No.	1268375-33-2
Molecular Formula	C12H8Cl2O4S2
Molecular Weight	351.22 g/mol
Synonyms	Diethyl 2,5-dichlorothieno[3,2-b]thiophene-3,6-dicarboxylate; 2,5-Dichlorothieno[3,2-b]thiophene-3,6-dicarboxylic acid diethyl ester; Thieno[3,2-b]thiophene-3,6-dicarboxylic acid, 2,5-dichloro-, diethyl ester; 3,6-Bis(ethoxycarbonyl)-2,5-dichlorothieno[3,2-b]thiophene; 2,5-Dichloro-3,6-di(ethoxycarbonyl)thieno[3,2-b]thiophene
EINECS	Contact for details

Quality Control

Our 2,5-Dichloro-Thieno[3,2-B]Thiophene-3,6-Dicarboxylic Acid Diethyl Ester is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing key parameters such as identity, purity, and impurity profiles. We adhere to relevant industry standards for fine chemical intermediates, and custom synthesis and purification to meet specific project requirements are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Off-white to light yellow 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.