Description

3-Methyl-2,5-Dihydrothiophene-1,1-Dioxide (CAS NO 1193-10-8) is a versatile sulfone derivative and a key heterocyclic building block in advanced organic synthesis. This compound matters for its unique reactivity as a masked diene or Michael acceptor, enabling the construction of complex molecular architectures. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical and agrochemical industries for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A crucial building block for synthesizing novel drug candidates, particularly in medicinal chemistry programs targeting sulfur-containing heterocycles.
• Agrochemical Synthesis: Used in the research and development of new pesticides and herbicides, leveraging its reactive sulfone functionality.
• Material Science Research: Serves as a monomer or precursor in the development of specialty polymers and advanced materials with specific electronic or thermal properties.
• Organic Synthesis Reagent: Employed in Diels-Alder reactions and other cycloadditions as a diene equivalent, and in nucleophilic addition reactions.
• Flavor & Fragrance Chemistry: Acts as an intermediate for synthesizing complex sulfur-containing aroma compounds.
• Academic & Industrial R&D: A valuable tool for methodological development and exploring new chemical spaces in research laboratories.

Basic Information

Product Name	3-Methyl-2,5-Dihydrothiophene-1,1-Dioxide
CAS No.	1193-10-8
Molecular Formula	C5H8O2S
Molecular Weight	132.18 g/mol
Synonyms	3-Methyl-2,5-dihydrothiophene 1,1-dioxide; 3-Methyl-2,5-dihydrothiophene-1,1-dioxide; 3-Methyl-2,5-dihydrothiophene sulfone; 3-Methyl-2,3-dihydrothiophene-1,1-dioxide; 3-Methyl-2,5-dihydrothiophene S,S-dioxide; 3-Methyl-δ²-dihydrothiophene-1,1-dioxide; 3-Methyl-2,5-dihydrothiophene-1,1-dioxyd; 3-Methyl-2,5-dihydrothiophene dioxide
EINECS	214-773-3

Quality Control

Our 3-Methyl-2,5-Dihydrothiophene-1,1-Dioxide is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of research and process chemistry. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (typically 15-25°C). Keep away from strong oxidizing agents and strong bases. For long-term storage, consider under an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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