Description

Diethyl 3,4-Dimethylthieno[2,3-B]Thiophene-2,5-Dicarboxylate is a high-purity, specialized organic compound belonging to the fused thiophene class, serving as a critical advanced intermediate in sophisticated chemical synthesis. Its value lies in its unique molecular architecture, which makes it an essential building block for the development of novel materials with tailored electronic and optical properties. This product is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and organic electronics industries for creating innovative active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders or possessing complex heterocyclic cores.
• Agrochemical Research: Building block for developing new-generation herbicides, fungicides, or insecticides with enhanced efficacy and selectivity.
• Organic Semiconductor Development: Core unit for synthesizing π-conjugated molecules and polymers used in Organic Field-Effect Transistors (OFETs) and Organic Photovoltaics (OPVs).
• Material Science: Intermediate for creating dyes, pigments, and functional materials with specific light-absorption or charge-transport characteristics.
• Academic & Industrial R&D: Serves as a valuable reagent for methodological studies in organic chemistry and for exploring new chemical spaces in discovery libraries.

Basic Information

Product Name	Diethyl 3,4-Dimethylthieno[2,3-B]Thiophene-2,5-Dicarboxylate
CAS No.	152487-69-9
Molecular Formula	C14H16O4S2
Molecular Weight	312.41 g/mol
Synonyms	3,4-Dimethylthieno[2,3-b]thiophene-2,5-dicarboxylic Acid Diethyl Ester; Diethyl 3,4-Dimethylthieno[2,3-b]thiophene-2,5-dicarboxylate; 2,5-Thieno[2,3-b]thiophenedicarboxylic Acid, 3,4-Dimethyl-, Diethyl Ester; DTDT Dicarboxylate Ester; 152487-69-9; Thienothiophene Diethyl Ester Derivative
EINECS	Contact for details

Quality Control

Every batch of Diethyl 3,4-Dimethylthieno[2,3-B]Thiophene-2,5-Dicarboxylate is manufactured under strict quality management systems. Our products undergo rigorous quality testing, including chromatographic purity analysis and structural confirmation, to ensure compliance with exacting R&D and process chemistry standards. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to guarantee traceability and batch-to-batch consistency.

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 away from heat, sparks, and open flame. The compound is light-sensitive; prolonged exposure to light should be avoided to maintain stability.

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.