Description

4-(Chlorosulphonyl)Benzoyl Chloride is a highly reactive bifunctional aromatic intermediate, serving as a critical building block in advanced organic synthesis. Its dual functionality allows for the sequential introduction of both acyl chloride and sulfonyl chloride groups, enabling the construction of complex molecular architectures. This compound is essential for research chemists and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and high-performance materials.

Application

• Pharmaceutical Intermediates: Key precursor in the synthesis of sulfonamide-based drugs, including diuretics, carbonic anhydrase inhibitors, and antiviral agents.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators that require a sulfonylbenzoyl backbone.
• Dyestuff and Pigment Manufacturing: Serves as a starting material for creating sulfonated azo dyes and high-performance organic pigments.
• Polymer Chemistry: Employed in the synthesis of specialty polymers, such as polyamides and polyesters with sulfone groups, for enhanced thermal and chemical resistance.
• Liquid Crystal & OLED Materials: A valuable intermediate for constructing charge-transporting molecules and emissive layers in electronic displays.
• Chemical Research & Development: A versatile reagent for introducing both -SO2Cl and -COCl moieties in medicinal chemistry and material science research.

Basic Information

Product Name	4-(Chlorosulphonyl)Benzoyl Chloride
CAS No.	7516-60-1
Molecular Formula	C7H4Cl2O3S
Molecular Weight	239.08 g/mol
Synonyms	4-(Chlorosulfonyl)benzoyl chloride; p-(Chlorosulfonyl)benzoyl chloride; 4-Carboxybenzenesulfonyl chloride chloride; Benzoyl chloride, 4-(chlorosulfonyl)-; Terephthaloyl chloride, 4-sulfonyl chloride; NSC 403119; Benzoic acid, 4-(chlorosulfonyl)-, chloride
EINECS	Contact for details

Quality Control

Every batch of 4-(Chlorosulphonyl)Benzoyl Chloride is manufactured and tested under a strict quality management system. We ensure high purity and consistency through advanced analytical techniques including HPLC, GC, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee it meets your specific research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 15-25°C. This product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent decomposition. Keep away from heat, open flames, and incompatible materials such as strong bases, alcohols, and amines.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	92 - 96 °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.