Description

3-Ethoxythiophene-2-Carboxylic Acid is a high-purity, functionalized heterocyclic building block of significant importance in advanced organic synthesis. This compound serves as a critical intermediate for the development of novel pharmaceuticals, agrochemicals, and functional materials. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of active pharmaceutical ingredients (APIs), particularly for candidates containing thiophene scaffolds.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides, leveraging its heterocyclic structure for bioactivity.
• Material Science: Serves as a precursor for conductive polymers, organic semiconductors, and other electronic materials due to the thiophene moiety.
• Organic Synthesis Building Block: Utilized in cross-coupling reactions, esterifications, and amide bond formations to introduce the 3-ethoxy-2-carboxylic acid thiophene unit.
• Ligand and Catalyst Development: The carboxylic acid group allows for coordination to metals, making it useful in designing novel ligands and catalysts.
• Dye and Pigment Intermediate: Employed in the synthesis of specialized dyes and pigments where the thiophene ring contributes to color and stability properties.

Basic Information

Product Name	3-Ethoxythiophene-2-Carboxylic Acid
CAS No.	139926-23-1
Molecular Formula	C7H8O3S
Molecular Weight	172.20 g/mol
Synonyms	2-Thiophenecarboxylic acid, 3-ethoxy-; 3-Ethoxy-2-thiophenecarboxylic acid; 3-Ethoxythiophene-2-carboxylic acid; 2-Carboxy-3-ethoxythiophene; 3-Ethoxythiophene-2-carboxylate; 3-Ethoxy-2-thiophene carboxylic acid; 3-Ethoxy-thiophene-2-carboxylic acid
EINECS	Contact for details

Quality Control

Our 3-Ethoxythiophene-2-Carboxylic Acid is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity, suitable for research and scale-up. We provide comprehensive analytical data including HPLC, NMR, and mass spectrometry. A Certificate of Analysis (COA) is supplied with each batch, detailing purity and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at 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.