Description

Ethanesulfinic Acid Methyl Ester is a versatile organosulfur compound that serves as a valuable synthetic intermediate. Its primary commercial value lies in its utility for introducing the ethanesulfinyl functional group into target molecules, enabling the synthesis of more complex chemical architectures. This product is particularly relevant for research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop novel active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those requiring sulfoxide or sulfone moieties for bioactivity.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and insecticides where the sulfinyl group modulates properties like solubility and systemic activity.
• Ligand and Catalyst Precursor: Serves as a starting material for creating chiral sulfoxide ligands used in asymmetric catalysis.
• Polymer Modification: Employed to introduce functional groups into polymer chains, altering physical properties like adhesion, thermal stability, or surface characteristics.
• Organic Synthesis Reagent: A useful reagent for sulfenylation and subsequent oxidation reactions in multi-step synthetic pathways.
• Material Science Research: Investigated for the development of advanced electronic materials and liquid crystals.

Basic Information

Product Name	Ethanesulfinic Acid Methyl Ester
CAS No.	31401-21-5
Molecular Formula	C3H8O2S
Molecular Weight	108.16 g/mol
Synonyms	Methyl Ethanesulfinate; Ethanesulfinic Acid Methyl Ester; Methyl Ethylsulfinate; Ethylsulfinic Acid Methyl Ester; Methyl Ethanesulfinylate; S-Ethyl S-Methyl Sulfoxide (tautomer); 1-Ethylsulfinylmethane; Methyl Ethyl Sulfoxide
EINECS	Contact for details

Quality Control

Our Ethanesulfinic Acid Methyl Ester is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets the high standards required for sensitive synthetic applications. A detailed Certificate of Analysis (COA) documenting purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from strong oxidizing agents and bases. For long-term storage, consider maintaining the material under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
Purity (GC Area %)	≥ 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.