Description

Ethyl 5-Chloro-4-Methylthiophene-2-Carboxylate is a high-purity, versatile heterocyclic building block essential for advanced organic synthesis. Its value lies in its functionalized thiophene core, which serves as a critical intermediate for constructing complex molecules with tailored properties. This compound is primarily needed by research and development chemists and process engineers in the pharmaceutical, agrochemical, and material science industries.

Application

• Pharmaceutical Intermediate: A key synthon in the development of active pharmaceutical ingredients (APIs), particularly for candidates with thiophene-based scaffolds.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides, leveraging its halogenated thiophene structure.
• Material Science Precursor: Serves as a monomer or building block for conductive polymers, organic semiconductors, and advanced functional materials.
• Organic Synthesis Building Block: Employed in cross-coupling reactions (e.g., Suzuki, Stille) and further functionalization to create diverse chemical libraries for screening.
• Dye and Pigment Intermediate: Utilized in the synthesis of specialized dyes and pigments where the thiophene ring contributes to color and stability properties.

Basic Information

Product Name	Ethyl 5-Chloro-4-Methylthiophene-2-Carboxylate
CAS No.	74598-04-2
Molecular Formula	C9H11ClO2S
Molecular Weight	218.70 g/mol
Synonyms	5-Chloro-4-methyl-2-thiophenecarboxylic acid ethyl ester; Ethyl 5-chloro-4-methyl-2-thiophenecarboxylate; 2-Thiophenecarboxylic acid, 5-chloro-4-methyl-, ethyl ester; 74598-04-2; 5-Chloro-4-methylthiophene-2-carboxylic acid ethyl ester
EINECS	Contact for details

Quality Control

Our Ethyl 5-Chloro-4-Methylthiophene-2-Carboxylate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to support your quality assurance and regulatory needs.

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 incompatible materials such as strong bases and strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or low-melting solid
Identification (IR)	Conforms to structure
Purity (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.