Description

Thiophene-3,4-Dicarboxylic Acid is a high-purity organic building block and versatile chemical intermediate. This compound is valued for its rigid, heterocyclic structure and dual carboxylic acid functionality, which enable precise molecular design and synthesis. It is primarily sought after by researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors for developing novel active ingredients and functional polymers.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and anti-inflammatory applications.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides, where the thiophene ring contributes to biological activity.
• Organic Electronic Materials: Serves as a precursor for conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Ligand and Metal-Organic Framework (MOF) Construction: The carboxylate groups act as excellent chelating sites for metal ions, useful in catalysis and porous material synthesis.
• Dye and Pigment Chemistry: Employed as a building block for synthesizing specialized colorants and fluorescent markers.
• Academic and R&D Laboratories: A fundamental reagent for methodological studies in organic synthesis and heterocyclic chemistry.

Basic Information

Product Name	Thiophene-3,4-Dicarboxylic Acid
CAS No.	4282-29-5
Molecular Formula	C6H4O4S
Molecular Weight	172.16 g/mol
Synonyms	3,4-Thiophenedicarboxylic Acid; 3,4-Dicarboxythiophene; Thiophene-3,4-dicarboxylic acid; 1H-Thiophene-3,4-dicarboxylic acid; 3,4-Thiophene Dicarboxylic Acid; 3-Carboxy-4-thiophenecarboxylic acid; 4-Thiophenedicarboxylic acid
EINECS	224-284-7

Quality Control

Our Thiophene-3,4-Dicarboxylic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing all test results is provided with every 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). This material is hygroscopic (moisture-sensitive) and should be kept under anhydrous conditions to maintain stability and purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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