Description

2-Thiophenecarbonylchloride,3-(Methylthio)-(9Ci) is a specialized organosulfur building block featuring both a reactive acid chloride and a methylthio substituent on the thiophene ring. This unique bifunctional structure makes it a critical intermediate for synthesizing complex molecules in advanced research and development. It is primarily sought after by pharmaceutical, agrochemical, and material science industries for constructing novel heterocyclic compounds, ligands, and functional polymers.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting central nervous system and anti-infective applications.
• Agrochemical Synthesis: Used in the development of new generation herbicides, fungicides, and insecticides that require specific thiophene-based motifs for bioactivity.
• Material Science Precursor: Serves as a monomer or functionalization agent in the production of conductive polymers, organic semiconductors, and advanced polymeric materials.
• Ligand Synthesis: Employed in the preparation of specialized ligands for catalysis and metal-organic frameworks (MOFs), leveraging the sulfur atoms for metal coordination.
• Chemical Research & Development: A versatile reagent in academic and industrial R&D for exploring new synthetic pathways and creating libraries of sulfur-containing heterocycles.
• Fine Chemical Production: Intermediate in the manufacture of dyes, pigments, and other performance chemicals where the thiophene core imparts specific properties.

Basic Information

Product Name	2-Thiophenecarbonylchloride,3-(Methylthio)-(9Ci)
CAS No.	75426-99-2
Molecular Formula	C7H5ClOS2
Molecular Weight	204.70 g/mol
Synonyms	3-(Methylthio)thiophene-2-carbonyl chloride; 3-Methylsulfanyl-thiophene-2-carbonyl chloride; 2-Thenoyl chloride, 3-(methylthio)-; 3-(Methylmercapto)thiophene-2-carboxylic acid chloride; 3-Methylthio-2-thiophenecarboxylic acid chloride; 3-(Methylthio)-2-thiophenecarbonyl chloride; 3-Methylsulfanyl-2-thiophenecarbonyl chloride
EINECS	Contact for details

Quality Control

Our 2-Thiophenecarbonylchloride,3-(Methylthio)-(9Ci) is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC, GC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical specifications. Our quality system is designed to support cGMP and ISO standards for research and industrial use.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (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.