Description

Benzenethiosulfonic Acid S-Methyl Ester is a versatile sulfur-containing organic compound that serves as a valuable building block and reagent in advanced chemical synthesis. Its unique structure makes it a critical intermediate for introducing thiosulfonate functionalities, enabling the development of novel materials and active ingredients. This product is essential for research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors seeking to innovate and scale complex synthetic pathways.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfur heterocycles or sulfonamide groups.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides, where the thiosulfonate moiety can contribute to biological activity.
• Polymer & Material Science: Acts as a modifier or cross-linking agent in the development of specialty polymers, resins, and functional materials.
• Organic Synthesis Reagent: Employed as a methylthiosulfonyl transfer agent or electrophile in various name reactions and coupling processes.
• Ligand & Catalyst Preparation: Useful precursor for synthesizing specialized ligands and catalysts used in metal-mediated transformations.
• Research & Development: Serves as a standard or starting material in academic and industrial R&D for exploring new chemical entities and reaction methodologies.

Basic Information

Item	Detail
Product Name	Benzenethiosulfonic Acid S-Methyl Ester
CAS No.	1125-25-3
Molecular Formula	C7H8O2S2
Molecular Weight	188.27 g/mol
Synonyms	S-Methyl benzenethiosulfonate; Methyl phenylthiosulfonate; Benzenesulfonothioic acid S-methyl ester; Phenyl methanethiosulfonate; Thiobenzenesulfonic acid S-methyl ester; Methyl thiobenzenesulfonate; (Methylsulfonylthio)benzene; BTSM
EINECS	Contact for details

Quality Control

Our Benzenethiosulfonic Acid S-Methyl Ester is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets precise customer specifications and industry benchmarks. A Certificate of Analysis (COA) detailing all relevant parameters is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. The compound is light-sensitive and should be handled under appropriate conditions to maintain stability.

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.