Description

Ethyl 4-(Chlorosulfonyl)Butanoate is a versatile bifunctional organic intermediate containing both a reactive chlorosulfonyl group and an ester moiety. This compound matters for its critical role as a key building block in the synthesis of more complex molecules, particularly in pharmaceutical and agrochemical research. It is primarily needed by R&D chemists and process development scientists in the fine chemical, pharmaceutical, and agrochemical industries for constructing sulfonamide derivatives and other active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfonamide functional groups.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides where the sulfonyl chloride group enables further derivatization.
• Material Science: Serves as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Chemical Research: Employed in organic synthesis as a versatile building block for creating sulfonates, sulfonamides, and other sulfur-containing compounds.
• Dye and Pigment Manufacturing: Acts as an intermediate in the production of certain sulfonated dyes and colorants.

Basic Information

Item	Details
Product Name	Ethyl 4-(Chlorosulfonyl)Butanoate
CAS No.	319452-60-3
Molecular Formula	C6H11ClO4S
Molecular Weight	214.67 g/mol
Synonyms	Ethyl 4-(Chlorosulfonyl)butyrate; 4-(Chlorosulfonyl)butanoic Acid Ethyl Ester; Butanoic acid, 4-(chlorosulfonyl)-, ethyl ester; Ethyl 4-chlorosulfonylbutanoate; Ethyl γ-chlorosulfonylbutyrate
EINECS	Contact for details

Quality Control

Our Ethyl 4-(Chlorosulfonyl)Butanoate is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography and spectroscopic methods, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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 decomposition. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (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.