Description

4-Chloro-2-Methylbenzenesulfonyl Chloride is a versatile and reactive organosulfur compound that serves as a critical building block in advanced organic synthesis. Its value lies in its dual functionality as a sulfonylating agent and a precursor for introducing the 4-chloro-2-methylphenylsulfonyl moiety into target molecules. This intermediate is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries who require high-purity, reliable starting materials for developing active ingredients and specialty chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides that incorporate sulfonyl groups for enhanced activity.
• Dyestuff and Pigment Manufacturing: Acts as an intermediate in creating sulfonated dyes and specialty colorants.
• Polymer Chemistry: Employed in the synthesis of sulfonated polymers and resins with specific ionic or surfactant properties.
• Chemical Research & Development: A valuable reagent for medicinal chemistry and process development in laboratory-scale and pilot-scale reactions.
• Ligand and Catalyst Preparation: Used to synthesize specialized ligands for metal complexes and catalysts.

Basic Information

Product Name	4-Chloro-2-Methylbenzenesulfonyl Chloride
CAS No.	56157-92-7
Molecular Formula	C7H6Cl2O2S
Molecular Weight	225.09 g/mol
Synonyms	2-Methyl-4-chlorobenzenesulfonyl chloride; 4-Chloro-o-toluenesulfonyl chloride; 4-Chloro-2-methylbenzene-1-sulfonyl chloride; 2-Methyl-4-chlorophenylsulfonyl chloride; p-Chloro-o-toluenesulfonyl chloride; 1-Chloro-4-methyl-3-sulfonylchloridobenzene; Benzenesulfonyl chloride, 4-chloro-2-methyl-; (4-Chloro-2-methylphenyl)sulfonyl chloride
EINECS	Contact for details

Quality Control

Our production of 4-Chloro-2-Methylbenzenesulfonyl Chloride adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is subjected to comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (IR, NMR). A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment, ensuring full traceability and compliance with your research or manufacturing specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be handled under dry conditions to prevent decomposition.

Specification

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

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