Description

Thieno[3,2-B][1]Benzothiophene-2-Carboxylic Acid is a high-purity, fused heterocyclic carboxylic acid building block of significant interest in advanced organic synthesis. This compound is valued for its rigid, planar structure and functional handle, which are critical for developing novel materials and active pharmaceutical ingredients. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and organic electronics industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new drug candidates, particularly for molecules targeting central nervous system (CNS) disorders and oncology.
• Agrochemical Synthesis: Used as a precursor in the design and synthesis of novel herbicides, fungicides, and insecticides with enhanced activity.
• Organic Semiconductor Research: Serves as a core building block for π-conjugated systems in the development of organic field-effect transistors (OFETs) and organic photovoltaics (OPVs).
• Ligand and Catalyst Development: The carboxylic acid group allows for functionalization into chelating ligands used in catalysis and material science.
• Fluorescent Dye and Sensor Chemistry: The extended, fused thiophene-benzothiophene system is utilized in creating dyes and molecular sensors with specific photophysical properties.
• Academic and Industrial R&D: A valuable reagent for methodological studies and exploring new chemical spaces in heterocyclic and supramolecular chemistry.

Basic Information

Product Name	Thieno[3,2-B][1]Benzothiophene-2-Carboxylic Acid
CAS No.	30126-05-7
Molecular Formula	C11H6O2S2
Molecular Weight	234.29 g/mol
Synonyms	2-Thieno[3,2-b][1]benzothiophenecarboxylic acid; TBTC Acid; Thienobenzothiophene-2-carboxylic acid; 2-Carboxythieno[3,2-b]benzothiophene; 2-Thieno[3,2-b]benzothiophenecarboxylic acid; NSC 407347; Thieno[3,2-b]benzothiophene-2-carboxylic acid
EINECS	Contact for details

Quality Control

Our Thieno[3,2-B][1]Benzothiophene-2-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by NMR and IR spectroscopy. We provide a detailed Certificate of Analysis (COA) with each shipment to ensure traceability and compliance with your research or production specifications.

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 oxidizing agents and strong bases.

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.