Description

Thieno[3,2-B]Thiophene-2-Carboxylic Acid Ethyl Ester is a high-purity, specialized heterocyclic building block essential for advanced organic synthesis. This compound serves as a critical precursor in the development of novel materials and active pharmaceutical ingredients (APIs), offering a unique fused-ring structure for molecular design. It is primarily utilized by research institutions and industrial R&D departments in the pharmaceutical, agrochemical, and organic electronics sectors seeking to innovate within their product pipelines.

Application

• Pharmaceutical Intermediate: A key synthon for constructing complex heterocyclic cores in drug discovery programs, particularly for targets requiring fused thiophene systems.
• Organic Semiconductor Precursor: Serves as a fundamental building block in the synthesis of π-conjugated molecules for organic field-effect transistors (OFETs) and photovoltaic materials.
• Agrochemical Research: Used in the development of new active ingredients with potential herbicidal or insecticidal properties.
• Material Science: Employed in creating novel polymers and small molecules with tailored electronic or optical properties.
• Chemical Synthesis: Acts as a versatile reagent for further functionalization, including hydrolysis to the corresponding acid or incorporation into larger, more complex architectures.

Basic Information

Product Name	Thieno[3,2-B]Thiophene-2-Carboxylic Acid Ethyl Ester
CAS No.	201004-08-2
Molecular Formula	C9H8O2S2
Molecular Weight	212.29 g/mol
Synonyms	Ethyl Thieno[3,2-b]thiophene-2-carboxylate; 2-Ethoxycarbonylthieno[3,2-b]thiophene; Thieno[3,2-b]thiophene-2-carboxylic acid ethyl ester; TTCA Ethyl Ester; Ethyl 2-Thieno[3,2-b]thiophenecarboxylate; 2-Carbethoxy-thieno[3,2-b]thiophene
EINECS	Contact for details

Quality Control

Our production of Thieno[3,2-B]Thiophene-2-Carboxylic Acid Ethyl Ester adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high purity. Each lot is characterized using advanced analytical techniques including HPLC, GC, 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 and regulatory documentation needs.

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 strong bases and incompatible organic solvents. For long-term storage, consider an inert atmosphere to maximize stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.