Description

3,4-Dimethylthieno[2,3-B]Thiophene-2,5-Dicarboxylic Acid is a high-purity, multifunctional heterocyclic dicarboxylic acid building block. This compound is valued for its rigid, fused thiophene-thiophene core, which is critical for tuning electronic and optical properties in advanced materials. It is primarily sought by research and development teams in the pharmaceutical and organic electronics sectors for synthesizing novel compounds and functional materials.

Application

This specialized dicarboxylic acid serves as a key synthetic intermediate in several high-tech fields:

• Pharmaceutical Intermediate: Used in the research and synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting specific biological pathways where its fused ring system is advantageous.
• Organic Semiconductor Precursor: Acts as a core building block for π-conjugated molecules and polymers used in organic field-effect transistors (OFETs) and organic photovoltaics (OPVs).
• Ligand Synthesis: Employed in the preparation of complex chelating ligands for catalysis and materials science applications.
• Functional Material Research: Utilized in academic and industrial R&D for creating novel dyes, sensors, and electroactive materials due to its electron-accepting and structural properties.
• Polymer Modification: Serves as a monomer or cross-linking agent for developing specialty polymers with enhanced thermal stability or specific electronic characteristics.

Basic Information

Product Name	3,4-Dimethylthieno[2,3-B]Thiophene-2,5-Dicarboxylic Acid
CAS No.	175202-55-8
Molecular Formula	C10H8O4S2
Molecular Weight	256.30 g/mol
Synonyms	3,4-Dimethylthieno[2,3-b]thiophene-2,5-dicarboxylic acid; DTDTDA; 2,5-Thieno[2,3-b]thiophenedicarboxylic acid, 3,4-dimethyl-; 3,4-Dimethylthieno[2,3-b]thiophene-2,5-dicarboxylate (deprotonated form); 175202-55-8; Thieno[2,3-b]thiophene-2,5-dicarboxylic acid, 3,4-dimethyl-
EINECS	Contact for details

Quality Control

Our production of 3,4-Dimethylthieno[2,3-B]Thiophene-2,5-Dicarboxylic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity for research and development applications. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong acids and organic solvents. For long-term storage, consider inert atmosphere conditions to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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