Description

2,3-Dichlorothiophene-5-Sulphonyl Chloride is a high-value, multi-functional chemical intermediate characterized by its reactive sulphonyl chloride group and halogenated thiophene backbone. This compound matters for its critical role as a versatile building block in the synthesis of complex molecules, enabling the introduction of the sulphonamide moiety. It is primarily needed by research and development chemists and process engineers in the pharmaceutical and agrochemical industries for creating new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel sulphonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides that require the thiophene-sulphonamide scaffold for bioactivity.
• Material Science Research: Serves as a monomer or precursor for developing specialty polymers and functional materials with specific electronic or surface properties.
• Dye and Pigment Manufacturing: Intermediate in the creation of specialized colorants and photographic chemicals.
• Custom Synthesis & Contract Manufacturing: Employed in research-scale and pilot-scale projects for clients requiring tailored molecular structures.

Basic Information

Product Name	2,3-Dichlorothiophene-5-Sulphonyl Chloride
CAS No.	126714-85-0
Molecular Formula	C4HCl3O2S2
Molecular Weight	247.54 g/mol
Synonyms	2,3-Dichloro-5-thiophenesulfonyl chloride; 2,3-Dichlorothiophene-5-sulfonyl chloride; 5-Chlorosulfonyl-2,3-dichlorothiophene; Thiophene-5-sulfonyl chloride, 2,3-dichloro-; 2,3-Dichloro-thiophene-5-sulfonyl chloride; 2,3-Dichloro-5-sulfonylchlorothiophene
EINECS	Contact for details

Quality Control

Every batch of 2,3-Dichlorothiophene-5-Sulphonyl Chloride is produced and tested under strict quality management protocols to ensure consistency and reliability for your synthetic processes. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as purity, identity, and impurity profiles. Our quality systems are designed to support cGMP and ISO standards for traceability and documentation, making this material suitable for demanding R&D and scale-up applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Recommended storage temperature is 2-8°C for long-term stability. Keep away from strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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