Description

Chlorosulfonylacetyl Chloride is a highly reactive bifunctional acid chloride, serving as a versatile building block in advanced organic synthesis. Its dual functionality is critical for introducing both chlorosulfonyl and acetyl chloride moieties in a single step, enabling efficient construction of complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for synthesizing sulfonamides, heterocycles, and other high-value intermediates.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially those containing sulfonamide or sulfonylurea groups.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators that require a chlorosulfonyl functional group.
• Dyestuff and Pigment Manufacturing: Employed as a reactive intermediate for creating sulfonated dyes and specialty pigments with enhanced properties.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for synthesizing specialty polymers, including polyelectrolytes and ion-exchange resins.
• Chemical Research & Development: A valuable reagent in academic and industrial R&D for exploring new reaction pathways and creating novel chemical entities.
• Sulfonation Agent: Provides a controlled source of the -SO2Cl group for the sulfonation of various organic substrates under mild conditions.

Basic Information

Product Name	Chlorosulfonylacetyl Chloride
CAS No.	4025-77-8
Molecular Formula	C2H2Cl2O3S
Molecular Weight	176.99 g/mol
Synonyms	Acetyl chloride, chlorosulfonyl-; Chlorosulfonylacetic acid chloride; 2-Chloro-2-oxoethanesulfonyl chloride; NSC 403124; Chlorosulfonyl acetyl chloride; (Chlorosulfonyl)acetyl chloride; Acetic acid, chlorosulfonyl-, chloride
EINECS	223-701-8

Quality Control

Our Chlorosulfonylacetyl Chloride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality management system is designed to meet the stringent requirements of industrial and research applications, ensuring reliable performance in your synthesis processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases, alcohols, and amines. Due to its reactivity as a strong acid/organic solvent, it should be handled with appropriate precautions. Recommended storage temperature is 2-8°C for long-term stability.

Specification

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