Description

Methyl 4-Amino-5-Ethyl-3-Thiophenecarboxylate is a high-purity, functionalized thiophene derivative serving as a critical building block in advanced organic synthesis. Its value lies in its unique heterocyclic structure, which is essential for constructing complex molecules with tailored electronic and biological properties. This intermediate is primarily needed by pharmaceutical R&D teams and fine chemical manufacturers developing novel active ingredients and specialty materials.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders and other therapeutic areas.
• Agrochemical Synthesis: Used in the development of advanced pesticides and herbicides, where the thiophene core contributes to biological activity.
• Material Science Research: Serves as a monomer or building block for creating conductive polymers, organic semiconductors, and other functional materials.
• Dye and Pigment Manufacturing: Employed in the synthesis of specialized dyes and pigments due to its ability to modify color and light-absorption properties.
• Academic & Industrial R&D: A valuable reagent for methodological development and exploring new chemical reactions in heterocyclic chemistry.

Basic Information

Product Name	Methyl 4-Amino-5-Ethyl-3-Thiophenecarboxylate
CAS No.	81741-99-3
Molecular Formula	C8H11NO2S
Molecular Weight	185.24 g/mol
Synonyms	Methyl 4-Amino-5-ethylthiophene-3-carboxylate; 4-Amino-5-ethyl-3-thiophenecarboxylic acid methyl ester; 5-Ethyl-4-aminothiophene-3-carboxylic acid methyl ester; Methyl 5-ethyl-4-aminothiophene-3-carboxylate; 3-Thiophenecarboxylic acid, 4-amino-5-ethyl-, methyl ester; 81741-99-3; 4-Amino-5-ethylthiophene-3-methyl carboxylate
EINECS	Contact for details

Quality Control

Our Methyl 4-Amino-5-Ethyl-3-Thiophenecarboxylate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and production. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude moisture. Keep away from incompatible materials.

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	≤ 1.0%
Residue on Ignition	≤ 0.1%

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