Description

Methanesulfonothioic Acid, S-Cyclopentyl Ester (9Ci) is a specialized organosulfur compound characterized by its cyclopentyl thioester group. This chemical is valued as a versatile intermediate and building block in advanced organic synthesis, particularly for introducing the methanesulfonothioate moiety. It is primarily sought by research and development laboratories and chemical manufacturers in the pharmaceutical and agrochemical sectors for the synthesis of novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of potential drug candidates, especially those requiring sulfonamide or thioester functionalities.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and insecticides.
• Chemical Research: Serves as a reagent in methodological studies and the development of new synthetic pathways in organic chemistry.
• Ligand and Catalyst Preparation: Can be utilized to synthesize specialized ligands for metal complexes or as a precursor in catalyst design.
• Material Science: Investigated for the preparation of functionalized polymers or surface-modifying agents.

Basic Information

Product Name	Methanesulfonothioic Acid, S-Cyclopentyl Ester (9Ci)
CAS No.	39165-48-5
Molecular Formula	C6H12O2S2
Molecular Weight	180.29 g/mol
Synonyms	S-Cyclopentyl methanethiosulfonate; Cyclopentyl methanesulfonothioate; Methanesulfonothioic acid S-cyclopentyl ester; Thiomethanesulfonic acid S-cyclopentyl ester; Cyclopentyl thiomethanesulfonate
EINECS	Contact for details

Quality Control

Our Methanesulfonothioic Acid, S-Cyclopentyl Ester (9Ci) is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatographic purity analysis and structural confirmation, to ensure consistency and reliability for your synthetic applications. A Certificate of Analysis (COA) detailing specific results is provided with every shipment.

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). This compound is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen or argon) is recommended to preserve stability and purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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