Description

4-Methylsulfuryl Chlorobenzene is a versatile organosulfur compound primarily used as a key synthetic intermediate in advanced chemical manufacturing. Its value lies in its reactive chlorosulfonyl group, which enables the introduction of sulfonamide or sulfonate functionalities into target molecules. This makes it an essential building block for researchers and manufacturers in the pharmaceutical and agrochemical industries, where it is used to create active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of sulfonamide-based drugs, including diuretics, antibiotics, and COX-2 inhibitors.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides, where the sulfonyl moiety contributes to biological activity.
• Dye and Pigment Manufacturing: Serves as an intermediate for creating sulfonated dyes and optical brighteners.
• Polymer Chemistry: Employed in the modification of polymers and as a monomer for specialty polymers with specific surface properties.
• Chemical Research & Development: A valuable reagent in organic synthesis for constructing complex molecules in academic and industrial R&D labs.
• Liquid Crystal Materials: Used in the synthesis of sulfone-based compounds for electronic display applications.

Basic Information

Product Name	4-Methylsulfuryl Chlorobenzene
CAS No.	98-57-7
Molecular Formula	C7H7ClO2S
Molecular Weight	190.65 g/mol
Synonyms	4-Toluenesulfonyl chloride; p-Toluenesulfonyl chloride; Tosyl chloride; TsCl; 4-Methylbenzenesulfonyl chloride; p-Tolylsulfonyl chloride; Toluene-4-sulfonyl chloride; 4-Toluenesulphonyl chloride
EINECS	202-684-8

Quality Control

Our 4-Methylsulfuryl Chlorobenzene is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of our global clientele. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is moisture-sensitive (hygroscopic) and should be kept under dry conditions. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	67 - 69 °C
Water Content (KF)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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