Description

Methyl 5-Chloro-3-Chlorosulfonyl-2-Thiophene Carboxylate is a high-purity, multi-functional chemical intermediate essential for advanced organic synthesis. Its unique structure, featuring both a chlorosulfonyl and a methyl carboxylate group on a chlorinated thiophene core, makes it a versatile building block for creating complex molecules. This compound is primarily sought after by R&D and production teams in the pharmaceutical and agrochemical industries for the development of novel active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs targeting the central nervous system and anti-infectives.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and insecticides, leveraging the thiophene scaffold for bioactivity.
• Material Science Research: Serves as a monomer or functionalization agent in the creation of specialty polymers and conductive materials.
• Dye and Pigment Manufacturing: Acts as an intermediate for producing high-performance, light-fast organic dyes and pigments.
• Ligand and Catalyst Development: Utilized in organometallic chemistry to create novel ligands for catalytic applications.
• Custom Synthesis and Contract Manufacturing: A critical starting material for custom synthesis projects requiring precise functional group manipulation.

Basic Information

Product Name	Methyl 5-Chloro-3-Chlorosulfonyl-2-Thiophene Carboxylate
CAS No.	70374-37-7
Molecular Formula	C7H4Cl2O4S2
Molecular Weight	279.14 g/mol
Synonyms	Methyl 5-chloro-3-(chlorosulfonyl)thiophene-2-carboxylate; 2-Thiophenecarboxylic acid, 5-chloro-3-(chlorosulfonyl)-, methyl ester; 5-Chloro-3-chlorosulfonyl-2-thiophenecarboxylic acid methyl ester; Methyl 5-chloro-3-sulfonyl chloride-2-thiophenecarboxylate; 3-Chlorosulfonyl-5-chlorothiophene-2-carboxylic acid methyl ester
EINECS	Contact for details

Quality Control

Every batch of Methyl 5-Chloro-3-Chlorosulfonyl-2-Thiophene Carboxylate is manufactured under strict quality management systems. We employ advanced analytical techniques including HPLC, GC, and NMR to ensure high purity and batch-to-batch consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is 2-8°C for long-term stability. Keep container tightly sealed when not in use to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.