Description

4-Chloro-3-Cyanobenzenesulfonyl Chloride is a versatile and highly reactive sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its value lies in its dual functional groups, which enable the efficient construction of complex molecules, particularly in the development of active pharmaceutical ingredients (APIs) and agrochemicals. This intermediate is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce sulfonamide or sulfonate functionalities into their target compounds.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in creating novel herbicides, fungicides, and insecticides with sulfonylurea or sulfonamide moieties.
• Dyestuff and Pigment Manufacturing: Serves as an intermediate for producing specialty dyes and organic pigments.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polymers and resins.
• Chemical Research & Development: A valuable reagent for medicinal chemistry and process chemistry in exploring new chemical entities.
• Liquid Crystal & Electronic Materials: Used in the synthesis of advanced materials for electronic applications.

Basic Information

Product Name	4-Chloro-3-Cyanobenzenesulfonyl Chloride
CAS No.	56044-25-8
Molecular Formula	C7H3Cl2NO2S
Molecular Weight	236.07 g/mol
Synonyms	4-Chloro-3-cyanobenzenesulfonyl chloride; 2-Chloro-5-(chlorosulfonyl)benzonitrile; 3-Cyano-4-chlorobenzenesulfonyl chloride; Benzenesulfonyl chloride, 4-chloro-3-cyano-; 5-Chlorosulfonyl-2-chlorobenzonitrile; 2-Chloro-5-chlorosulfonylbenzonitrile; 4-Chloro-3-cyanophenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Our 4-Chloro-3-Cyanobenzenesulfonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all specifications and test results. Our quality commitment ensures the material meets the high standards required for pharmaceutical and agrochemical research and development.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent hydrolysis. Keep away from strong bases, amines, alcohols, and moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 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.