Description

4-Chloro-5-Ethylthiophene-2-Carboxylic Acid is a high-purity, synthetically valuable heterocyclic building block. This compound is essential for advanced organic synthesis, serving as a key intermediate in the development of novel active pharmaceutical ingredients (APIs) and functional materials. It is primarily sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial 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 research and development of new-generation pesticides and herbicides, leveraging its thiophene core for bioactivity.
• Material Science Research: Serves as a monomer or functional unit in the development of conductive polymers, organic semiconductors, and other advanced materials.
• Chemical Research & Development: A versatile building block for medicinal chemistry, enabling structure-activity relationship (SAR) studies and library synthesis.
• Ligand and Catalyst Development: The carboxylic acid and halogen functionalities make it suitable for creating novel ligands for metal-catalyzed reactions.

Basic Information

Product Name	4-Chloro-5-Ethylthiophene-2-Carboxylic Acid
CAS No.	859794-04-0
Molecular Formula	C7H7ClO2S
Molecular Weight	190.65 g/mol
Synonyms	5-Ethyl-4-chlorothiophene-2-carboxylic acid; 4-Chloro-5-ethyl-2-thiophenecarboxylic acid; 2-Thiophenecarboxylic acid, 4-chloro-5-ethyl-; 4-Chloro-5-ethylthiophene-2-carboxylate; 859794-04-0; 4-Chloro-5-ethyl-2-thiophenecarboxylate
EINECS	Contact for details

Quality Control

Our 4-Chloro-5-Ethylthiophene-2-Carboxylic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specifications and test results. Our quality commitment ensures material integrity for your critical R&D and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong bases, strong oxidizing agents, and sources of ignition.

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.