Description

3-(Chlorosulfonyl)Benzoyl Chloride is a highly reactive bifunctional aromatic intermediate, serving as a critical building block in advanced organic synthesis. Its dual functionality as an acid chloride and a sulfonyl chloride makes it indispensable for constructing complex molecular architectures with high precision. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfonamide-based drugs, including diuretics, carbonic anhydrase inhibitors, and antiviral agents.
• Agrochemical Synthesis: Used in manufacturing herbicides, fungicides, and plant growth regulators that require a sulfonyl benzoyl backbone.
• Dyestuff and Pigment Production: Serves as an intermediate for creating high-performance, light-fast azo dyes and organic pigments.
• Polymer Modification: Employed to introduce reactive sulfonyl chloride groups into polymer chains for cross-linking or creating specialty resins.
• Chemical Research & Development: A versatile reagent in academic and industrial R&D for exploring new reaction pathways and synthesizing novel heterocyclic compounds.
• Liquid Crystal and OLED Material Synthesis: Used in the production of advanced electronic materials requiring specific aromatic sulfone structures.

Basic Information

Product Name	3-(Chlorosulfonyl)Benzoyl Chloride
CAS No.	4052-92-0
Molecular Formula	C7H4Cl2O3S
Molecular Weight	239.08 g/mol
Synonyms	3-(Chlorosulfonyl)benzoyl chloride; m-(Chlorosulfonyl)benzoyl chloride; 3-Carboxybenzenesulfonyl chloride chloride; Benzoyl chloride, 3-(chlorosulfonyl)-; Meta-chlorosulfonyl benzoyl chloride; NSC 403119; 3-Chlorosulfonylbenzoyl chloride; Benzoic acid, 3-(chlorosulfonyl)-, chloride
EINECS	223-749-8

Quality Control

Our 3-(Chlorosulfonyl)Benzoyl 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. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are 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 hydrolysis. Keep away from strong bases, oxidizing agents, and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white crystalline solid or powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	64 - 68 °C
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.