Description

4-(Methylthio)Benzenesulfonyl Chloride (Saltdata: Free) is a versatile and reactive organosulfur compound, serving as a critical building block in advanced organic synthesis. Its value lies in its dual functional groups, which allow for selective derivatization to create complex molecules with specific properties. This high-purity intermediate is essential for research and production in the pharmaceutical and agrochemical industries, where it is used to develop new active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Building block for creating novel herbicides, fungicides, and insecticides with enhanced efficacy.
• Dye and Pigment Manufacturing: Used in the production of specialty dyes and colorants due to its sulfonyl chloride moiety.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers and resins.
• Chemical Research: Valuable reagent in academic and industrial R&D for exploring new synthetic pathways and material science.
• Ligand and Catalyst Development: Useful for constructing complex ligands used in catalytic systems and coordination chemistry.

Basic Information

Product Name	4-(Methylthio)Benzenesulfonyl Chloride (Saltdata: Free)
CAS No.	1129-25-5
Molecular Formula	C7H7ClO2S2
Molecular Weight	222.71 g/mol
Synonyms	p-(Methylthio)benzenesulfonyl chloride; 4-Methylsulfanylbenzenesulfonyl chloride; 4-(Methylmercapto)benzenesulfonyl chloride; 1-(Chlorosulfonyl)-4-(methylthio)benzene; p-Methylthiophenylsulfonyl chloride; 4-Methylthiobenzenesulfonyl chloride; Benzenesulfonyl chloride, 4-(methylthio)-; 4-Methylsulfanylphenylsulfonyl chloride
EINECS	214-456-5

Quality Control

Our production of 4-(Methylthio)Benzenesulfonyl Chloride adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC, GC, and NMR to verify identity, potency, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all specifications 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, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic and moisture-sensitive nature, the container must be kept tightly sealed 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.