Description

2,5-Thiophenedicarboxylic Acid Monoethyl Ester is a high-purity organic building block and synthetic intermediate of significant commercial and research interest. Its value lies in its versatile thiophene-based dicarboxylate structure, which is crucial for constructing complex molecules in advanced material and pharmaceutical chemistry. This compound is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and organic electronics industries for applications such as ligand synthesis and polymer precursor development.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules containing thiophene heterocycles.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides that leverage the thiophene moiety for 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).
• Coordination Chemistry & Ligand Design: The carboxylic acid and ester functional groups make it a useful precursor for designing chelating ligands for metal catalysts and metal-organic frameworks (MOFs).
• Chemical Research & Development: Employed as a versatile synthon in academic and industrial R&D for exploring new synthetic methodologies and creating novel chemical entities.
• Specialty Polymer Monomer: Can be polymerized or incorporated as a comonomer to impart specific electronic or structural properties to advanced polymeric materials.

Basic Information

Product Name	2,5-Thiophenedicarboxylic Acid Monoethyl Ester
CAS No.	156910-49-5
Molecular Formula	C9H10O4S
Molecular Weight	214.24 g/mol
Synonyms	Monoethyl 2,5-thiophenedicarboxylate; 5-(Ethoxycarbonyl)thiophene-2-carboxylic acid; 2,5-Thiophenedicarboxylic Acid Ethyl Ester; Ethyl 5-carboxythiophene-2-carboxylate; Thiophene-2,5-dicarboxylic Acid Monoethyl Ester; 2,5-Thiophenedicarboxylic Acid 2-Ethyl Ester; 2,5-Thiophenedicarboxylic Acid 5-Ethyl Ester; 2-Carboxy-5-ethoxycarbonylthiophene
EINECS	Contact for details

Quality Control

Our 2,5-Thiophenedicarboxylic Acid Monoethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and heat sources.

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.