Description

Benzenesulfonyl Chloride, 4-[(1-Methylethyl)Thio]- (9Ci) is a specialized organosulfur compound featuring a sulfonyl chloride functional group and an isopropylthio substituent. This structure makes it a valuable sulfonylation reagent and a key chemical intermediate for synthesizing more complex molecules. It is primarily utilized by pharmaceutical and agrochemical research and development teams, as well as in advanced material science applications.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring sulfonamide or sulfonate ester functionalities.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the sulfonyl chloride group enables the introduction of sulfonamide linkages.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polymers and resins with unique properties.
• Dye and Pigment Manufacturing: Serves as an intermediate for creating sulfonated dyes and organic pigments.
• Chemical Research & Development: Employed as a versatile reagent for sulfonylation reactions in organic synthesis and process development.
• Liquid Crystal and Electronic Material Precursor: Used in the synthesis of advanced materials for display and semiconductor industries.

Basic Information

Product Name	Benzenesulfonyl Chloride, 4-[(1-Methylethyl)Thio]- (9Ci)
CAS No.	125393-26-2
Molecular Formula	C9H11ClO2S2
Molecular Weight	250.77 g/mol
Synonyms	4-(Isopropylthio)benzenesulfonyl chloride; p-(Isopropylthio)benzenesulfonyl chloride; 4-Isopropylthiobenzenesulfonyl chloride; 1-(Isopropylsulfanyl)-4-sulfonylchloridobenzene; Benzenesulfonyl chloride, 4-[(1-methylethyl)thio]-; 4-(Propan-2-ylsulfanyl)benzenesulfonyl chloride
EINECS	Contact for details

Quality Control

Our Benzenesulfonyl Chloride, 4-[(1-Methylethyl)Thio]- is produced under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay (by HPLC), identity (by IR/NMR), and impurity profiles are available upon request. We adhere to relevant cGMP guidelines for the production of chemical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive) and reacts with strong acids/organic solvents; ensure the container is kept tightly sealed to exclude moisture and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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