Description

3-Thiophenecarboxylic Acid, 5-Methyl-, Ethyl Ester is a high-purity, versatile heterocyclic building block essential for advanced organic synthesis. This compound is valued for its role as a key intermediate in the development of pharmaceuticals, agrochemicals, and functional materials. It is primarily sought after by research institutions and industrial manufacturers in the life sciences and specialty chemical sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial synthon for the development of active pharmaceutical ingredients (APIs), particularly in medicinal chemistry research targeting novel therapeutics.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and fungicides, leveraging the thiophene moiety for enhanced biological activity.
• Material Science Research: Serves as a monomer or precursor in the synthesis of conductive polymers, organic semiconductors, and other functional organic materials.
• Ligand and Catalyst Development: Employed in organometallic chemistry to create novel ligands for catalysis and coordination complexes.
• Flavor & Fragrance Industry: Acts as an intermediate for synthesizing specific sulfur-containing aroma compounds.
• Organic Synthesis Building Block: Utilized in various name reactions and multi-step syntheses to introduce the substituted thiophene functionality.

Basic Information

Product Name	3-Thiophenecarboxylic Acid, 5-Methyl-, Ethyl Ester
CAS No.	19163-50-9
Molecular Formula	C8H10O2S
Molecular Weight	170.23 g/mol
Synonyms	Ethyl 5-Methyl-3-thiophenecarboxylate; 5-Methyl-3-thiophenecarboxylic Acid Ethyl Ester; 3-Carbethoxy-5-methylthiophene; Ethyl 5-Methylthiophene-3-carboxylate; 5-Methylthiophene-3-carboxylic Acid Ethyl Ester; 19163-50-9; 3-Thiophenecarboxylic acid, 5-methyl-, ethyl ester
EINECS	Contact for details

Quality Control

Every batch of 3-Thiophenecarboxylic Acid, 5-Methyl-, Ethyl Ester is manufactured and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) including purity (typically by GC or HPLC), identity confirmation (by IR, NMR), and impurity profile is available for each lot upon request.

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 bases and incompatible materials such as strong oxidizing agents. For long-term storage under an inert atmosphere is recommended.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (Standard Grade)
Water Content (KF)	≤ 0.5%

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