Description

4-n-Butylbenzenesulfonyl Chloride is a versatile and reactive organosulfur compound widely used as a key sulfonylation reagent in organic synthesis. Its primary value lies in its ability to introduce the 4-n-butylbenzenesulfonyl group, a useful moiety for modifying molecular properties and creating functional intermediates. This high-purity chemical is essential for researchers and process chemists in the pharmaceutical, agrochemical, and specialty chemical industries developing new active ingredients and advanced materials.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of sulfonamide-based drug candidates, including potential enzyme inhibitors and receptor modulators.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the sulfonyl chloride group enables the creation of bioactive sulfonamide or sulfonate esters.
• Polymer & Material Science: Serves as a monomer or modifying agent for creating specialty polymers, surfactants, and liquid crystals with tailored properties.
• Chemical Research & Development: Employed as a standard reagent for sulfonylation reactions in academic and industrial R&D laboratories for novel compound libraries.
• Dye & Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and colorants, enhancing solubility and fiber affinity.

Basic Information

Product Name	4-n-Butylbenzenesulfonyl Chloride
CAS No.	54997-92-1
Molecular Formula	C₁₀H₁₃ClO₂S
Molecular Weight	232.72 g/mol
Synonyms	p-Butylbenzenesulfonyl Chloride; 4-Butylbenzenesulfonyl Chloride; 1-Butyl-4-(chlorosulfonyl)benzene; Butylbenzene-4-sulfonyl Chloride; NSC 403121; 4-n-Butylphenylsulfonyl Chloride; Benzenesulfonyl chloride, 4-butyl-
EINECS	Contact for details

Quality Control

Our 4-n-Butylbenzenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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	Colorless to pale yellow liquid or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
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.