Description

3,4-Thiophenedicarboxylic Acid, Diethyl Ester is a high-purity organic building block and key intermediate in advanced chemical synthesis. This compound matters for its role as a versatile precursor in the development of complex heterocyclic systems, particularly in materials science and pharmaceutical research. It is primarily needed by R&D chemists and process development scientists working in agrochemical, pharmaceutical, and organic electronic material sectors.

Application

• Pharmaceutical Intermediate: Serves as a critical precursor in the synthesis of novel active pharmaceutical ingredients (APIs) and drug candidates, particularly those containing thiophene scaffolds.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides, leveraging the thiophene moiety for biological activity.
• Organic Electronic Materials: Acts as a building block for conjugated polymers and small molecules used in organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Ligand and Catalyst Development: Employed in the preparation of specialized ligands for metal-organic frameworks (MOFs) and homogeneous catalysis.
• Dye and Pigment Chemistry: Utilized as an intermediate for the synthesis of specialized dyes, pigments, and fluorescent markers.
• Academic & Industrial R&D: A valuable reagent for methodological development and exploring new chemical spaces in heterocyclic and synthetic organic chemistry.

Basic Information

Product Name	3,4-Thiophenedicarboxylic Acid, Diethyl Ester
CAS No.	53229-47-3
Molecular Formula	C10H12O4S
Molecular Weight	228.27 g/mol
Synonyms	Diethyl 3,4-Thiophenedicarboxylate; 3,4-Thiophenedicarboxylic Acid Diethyl Ester; 3,4-Bis(ethoxycarbonyl)thiophene; Thiophene-3,4-dicarboxylic Acid Diethyl Ester; Diethyl Thiophene-3,4-dicarboxylate; 3,4-Di(ethoxycarbonyl)thiophene; 3,4-Thiophenedicarboxylate Diethyl Ester
EINECS	Contact for details

Quality Control

Our 3,4-Thiophenedicarboxylic Acid, Diethyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and batch-to-batch consistency suitable for demanding R&D and scale-up processes. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment.

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 materials such as strong oxidizing agents.

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.