Description

α-(Chlorosulphonyl)-2,3-Dichlorotoluene is a specialized chlorinated aromatic sulfonyl chloride derivative, serving as a critical high-purity synthetic intermediate. Its value lies in its unique electrophilic reactivity, enabling the precise introduction of the chlorosulfonyl functional group into complex molecular architectures. This compound is essential for researchers and manufacturers in the agrochemical and pharmaceutical sectors, particularly for developing novel active ingredients and advanced fine chemicals.

Application

• Agrochemical Synthesis: A key building block for the development of novel herbicides, fungicides, and insecticides, leveraging its reactive chlorosulfonyl group.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs), especially in constructing sulfonamide-based drug candidates.
• Dyestuff and Pigment Manufacturing: Employed in the production of specialized dyes and pigments where the introduction of sulfonyl chloride groups is required.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers with specific functional properties.
• Chemical Research & Development: A valuable reagent for organic synthesis in R&D laboratories for creating novel chemical entities and exploring new reaction pathways.
• Liquid Crystal and Electronic Material Precursors: Used in the synthesis of advanced materials for electronic applications.

Basic Information

Product Name	α-(Chlorosulphonyl)-2,3-Dichlorotoluene
CAS No.	163295-71-4
Molecular Formula	C7H5Cl3O2S
Molecular Weight	259.53 g/mol
Synonyms	2,3-Dichloro-α-(chlorosulfonyl)toluene; 2,3-Dichlorobenzylsulfonyl Chloride; (2,3-Dichlorophenyl)methanesulfonyl Chloride; 2,3-Dichloro-α-toluenesulfonyl Chloride; α-Chlorosulfonyl-2,3-dichlorotoluene; 1-(Chlorosulfonyl)methyl-2,3-dichlorobenzene; (2,3-Dichlorobenzyl)sulfonyl Chloride
EINECS	Contact for details

Quality Control

Every batch of α-(Chlorosulphonyl)-2,3-Dichlorotoluene is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards for fine chemical intermediates. A comprehensive Certificate of Analysis (COA), detailing purity, identity, and impurity profiles, is provided with each shipment to guarantee batch-to-batch consistency and reliable performance in your synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases, amines, and alcohols. Due to its reactivity as a strong acid/organic solvent derivative, it should be kept under an inert atmosphere if prolonged storage is required. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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