Description

5-Ethoxythiophene-2-Carboxylic Acid is a high-purity organic building block and heterocyclic carboxylic acid derivative. This compound is a critical intermediate in the synthesis of advanced pharmaceutical ingredients and functional materials. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly in drug discovery programs.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, leveraging the thiophene moiety for biological activity.
• Material Science: Serves as a precursor for functional polymers, organic semiconductors, and conductive materials.
• Chemical Research: Essential reagent in organic synthesis and medicinal chemistry for constructing complex heterocyclic systems.
• Ligand and Catalyst Development: Used to create novel ligands for metal catalysis and coordination chemistry applications.

Basic Information

Product Name	5-Ethoxythiophene-2-Carboxylic Acid
CAS No.	135080-30-7
Molecular Formula	C7H8O3S
Molecular Weight	172.20 g/mol
Synonyms	2-Thiophenecarboxylic acid, 5-ethoxy-; 5-Ethoxy-2-thiophenecarboxylic acid; 5-Ethoxythiophene-2-carboxylic acid; 2-Carboxy-5-ethoxythiophene; 5-Ethoxy-thiophene-2-carboxylic acid; 135080-30-7; 5-Ethoxy-2-thiophene carboxylic acid
EINECS	Contact for details

Quality Control

Our 5-Ethoxythiophene-2-Carboxylic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via FTIR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) documenting all specifications are available upon request.

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 handled under dry conditions to prevent degradation.

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.