Description

Methyl 5-Ethylthiophene-3-Carboxylate is a high-purity organic building block and heterocyclic intermediate of significant importance in advanced chemical synthesis. Its value lies in its functionalized thiophene core, which serves as a versatile precursor for the development of complex molecules in pharmaceutical and materials science research. This compound is essential for R&D chemists and process development scientists working on active pharmaceutical ingredients (APIs), agrochemicals, and functional organic materials.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Used in the preparation of advanced pesticide and herbicide molecules, leveraging the thiophene moiety for biological activity.
• Material Science Precursor: Serves as a building block for conjugated polymers and organic semiconductors used in OLEDs, organic photovoltaics (OPVs), and field-effect transistors (OFETs).
• Ligand and Catalyst Development: Employed in the synthesis of specialized ligands for metal catalysis and coordination chemistry.
• Chemical Research & Development: A versatile starting material for heterocyclic chemistry, enabling the construction of more complex fused-ring systems and functionalized derivatives.
• Fine Chemical Production: Used in the custom synthesis of specialty chemicals for electronics and performance materials.

Basic Information

Product Name	Methyl 5-Ethylthiophene-3-Carboxylate
CAS No.	938006-77-0
Molecular Formula	C8H10O2S
Molecular Weight	170.23 g/mol
Synonyms	5-Ethyl-3-thiophenecarboxylic acid methyl ester; Methyl 5-ethyl-3-thiophenecarboxylate; 3-Thiophenecarboxylic acid, 5-ethyl-, methyl ester; 5-Ethylthiophene-3-carboxylic acid methyl ester; 938006-77-0; Methyl 5-ethylthiophene-3-carboxylate
EINECS	Contact for details

Quality Control

Our Methyl 5-Ethylthiophene-3-Carboxylate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical specifications. Our quality commitment ensures the material meets the high standards required for research and development applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible organic solvents. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 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.