Description

3-Chlorophenylmethanesulfonyl Chloride is a versatile and highly reactive sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its primary value lies in its ability to act as a sulfonylation reagent, introducing the methanesulfonyl (mesyl) group to construct complex molecules with precision. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, where it is used to develop active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides that require a sulfonyl chloride functional group for activity.
• Material Science: Employed in the modification of polymers and the creation of specialty materials with tailored surface properties.
• Chemical Research: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and creating novel chemical entities.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of complex colorants and functional dyes.

Basic Information

Product Name	3-Chlorophenylmethanesulfonyl Chloride
CAS No.	23299-18-5
Molecular Formula	C7H6Cl2O2S
Molecular Weight	225.09 g/mol
Synonyms	3-Chlorobenzylsulfonyl Chloride; (3-Chlorophenyl)methanesulfonyl Chloride; m-Chlorobenzylsulfonyl Chloride; α-Chloro-m-toluenesulfonyl Chloride; 3-Chlorobenzyl Chlorosulfonate; 1-Chloro-3-(chlorosulfonylmethyl)benzene; 3-Chlorophenylmethylsulfonyl Chloride
EINECS	Contact for details

Quality Control

Our 3-Chlorophenylmethanesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every 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 at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under an inert atmosphere (e.g., nitrogen or argon) to prevent decomposition. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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