Description

2-Chloroethanesulfinic Acid is a versatile organosulfur compound with a reactive sulfinic acid group and a chloroethyl side chain. This unique structure makes it a valuable synthetic intermediate for constructing more complex sulfur-containing molecules. It is primarily sought after by research chemists and process development teams in the pharmaceutical and agrochemical industries for applications such as the synthesis of sulfones, sulfonamides, and other functionalized intermediates.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfone or sulfonamide moieties.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides.
• Organic Synthesis Reagent: Employed as a sulfinylation agent or as a precursor to other sulfur-based reagents in academic and industrial R&D laboratories.
• Polymer Chemistry: Can serve as a monomer or modifier for introducing sulfinic acid functionality into polymers for specialized applications.
• Chemical Research: Utilized in methodological studies and the development of new synthetic pathways involving C-S bond formation.

Basic Information

Product Name	2-Chloroethanesulfinic Acid
CAS No.	21780-04-1
Molecular Formula	C2H5ClO2S
Molecular Weight	128.58 g/mol
Synonyms	2-Chloroethanesulfinic acid; 2-Chloroethane-1-sulfinic acid; 2-Chloroethylsulfinic acid; Chloroethylsulfinic acid; Ethanesulfinic acid, 2-chloro-; NSC 163045
EINECS	Contact for details

Quality Control

Our 2-Chloroethanesulfinic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including purity assay and impurity profiling, to ensure consistency and reliability for your research and development processes. A comprehensive Certificate of Analysis (COA) detailing specific results for each batch is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic and easily oxidized nature, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place (15-25°C). Minimize exposure to air and moisture during handling to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%

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