Description

4-Ethylbenzene-1-Sulfonyl Chloride is a versatile and reactive organosulfur compound primarily used as a key sulfonylation reagent in organic synthesis. Its value lies in its ability to introduce the sulfonyl functional group, a crucial step in creating molecules with specific biological or material properties. This intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the production of modern herbicides, fungicides, and pesticides that require a sulfonyl moiety for their activity.
• Polymer Chemistry: Serves as a monomer or modifying agent for creating specialty polymers with enhanced properties like thermal stability or solubility.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and colorants.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and creating novel chemical entities.
• Liquid Crystal & Electronic Material Precursor: Used in the synthesis of advanced materials for display and semiconductor applications.

Basic Information

Product Name	4-Ethylbenzene-1-Sulfonyl Chloride
CAS No.	16712-69-9
Molecular Formula	C8H9ClO2S
Molecular Weight	204.67 g/mol
Synonyms	p-Ethylbenzenesulfonyl Chloride; 4-Ethylbenzenesulfonyl Chloride; 1-(Chlorosulfonyl)-4-ethylbenzene; 4-Ethylphenylsulfonyl Chloride; p-Ethylphenylsulfonyl Chloride; Benzenesulfonyl chloride, 4-ethyl-; ETBS-Cl
EINECS	240-764-6

Quality Control

Every batch of 4-Ethylbenzene-1-Sulfonyl Chloride is produced under strict quality management protocols. We ensure compliance with relevant industry standards through rigorous in-process and final release testing. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled under dry conditions to prevent decomposition.

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%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.