Description

2-Thiophenecarbonyl Chloride, 5-Ethyl- (9Ci) is a specialized organosulfur building block characterized by its reactive acid chloride functional group on a substituted thiophene ring. This compound matters for its role as a critical intermediate in the synthesis of complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is needed by research chemists and process development scientists working on active pharmaceutical ingredients (APIs), advanced materials, and novel crop protection agents where the introduction of a thiophene moiety is required.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those targeting central nervous system (CNS) disorders, anti-infectives, and anti-inflammatory agents.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides, where the thiophene ring contributes to biological activity and selectivity.
• Material Science Research: Serves as a monomer or functionalization agent in the development of conductive polymers, organic semiconductors, and specialty polymers with unique electronic properties.
• Ligand and Catalyst Development: Employed to create novel thiophene-based ligands for transition metal catalysts used in cross-coupling and other organic transformations.
• Dye and Pigment Manufacturing: Acts as an intermediate for synthesizing specialized dyes and pigments with enhanced light-fastness and color properties.

Basic Information

Item	Detail
Product Name	2-Thiophenecarbonyl Chloride, 5-Ethyl- (9Ci)
CAS No.	64964-17-6
Molecular Formula	C7H7ClOS
Molecular Weight	174.65 g/mol
Synonyms	5-Ethyl-2-thiophenecarbonyl chloride; 5-Ethylthiophene-2-carbonyl chloride; 2-Thenoyl chloride, 5-ethyl-; 5-Ethyl-2-thenoyl chloride; 5-Ethylthiophene-2-carboxylic acid chloride; 64964-17-6; 5-Ethyl-2-thiophenecarboxylic acid chloride
EINECS	Contact for details

Quality Control

Our 2-Thiophenecarbonyl Chloride, 5-Ethyl- (9Ci) is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for advanced synthetic applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area. Due to its hygroscopic and moisture-sensitive nature, containers should be kept sealed under an inert atmosphere (e.g., nitrogen or argon) when not in use to prevent hydrolysis. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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