Description

5-Bromothieno[3,2-b]thiophene-2-carboxylic acid is a high-purity, multi-functional heterocyclic building block of significant interest in advanced organic synthesis. Its core value lies in its unique fused thiophene structure, which serves as a critical precursor for developing novel materials and active pharmaceutical ingredients (APIs). This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and organic electronics industries, where it is used to create complex molecules with tailored electronic and biological properties.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel drug candidates, particularly in areas targeting central nervous system (CNS) disorders and anti-infective agents.
• Agrochemical Research: Used in the synthesis of advanced herbicides, fungicides, and insecticides, leveraging its heterocyclic core for bioactivity.
• Organic Semiconductor Precursor: Serves as a fundamental building block for π-conjugated systems in organic field-effect transistors (OFETs) and organic photovoltaics (OPVs).
• Ligand Synthesis: Employed in the preparation of specialized ligands for catalysis and material science applications.
• Chemical Research & Development: A versatile starting material for exploring new chemical spaces and synthesizing complex fused heterocycles in academic and industrial R&D.
• Functional Material Development: Integral to creating novel dyes, pigments, and electroactive polymers for specialized coatings and sensors.

Basic Information

Product Name	5-Bromothieno[3,2-b]thiophene-2-carboxylic Acid
CAS No.	1378448-42-0
Molecular Formula	C7H3BrO2S2
Molecular Weight	262.13 g/mol
Synonyms	5-Bromothieno[3,2-b]thiophene-2-carboxylic acid; 2-Thiophenecarboxylic acid, 5-bromothieno[3,2-b]thien-2-yl-; 5-Bromo-thieno[3,2-b]thiophene-2-carboxylic acid; Thieno[3,2-b]thiophene-2-carboxylic acid, 5-bromo-; 1378448-42-0
EINECS	Contact for details

Quality Control

Our 5-Bromothieno[3,2-b]thiophene-2-carboxylic acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure high purity and batch-to-batch consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under dry conditions to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (HPLC)	Conforms to reference standard
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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