Description

4-Methyl-2,3-Dihydro-3-Thiophenesulfonyl Chloride 1,1-Dioxide (Saltdata: Free) is a high-purity, reactive sulfonyl chloride derivative, a critical building block in advanced organic synthesis. Its value lies in its role as a versatile electrophilic reagent for introducing the sulfonamide or sulfonate functional group, enabling the creation of complex molecules with tailored properties. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries who require a reliable and high-quality intermediate for drug discovery and material science applications.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs targeting various therapeutic areas.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides, where the sulfonyl moiety contributes to biological activity.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for creating specialty polymers, coatings, and advanced materials with specific functional properties.
• Chemical Research & Development: A valuable reagent in medicinal chemistry and process chemistry for constructing molecular libraries and optimizing synthetic routes.
• Dye & Pigment Manufacturing: Employed in the synthesis of sulfonated dyes and colorants, enhancing solubility and application characteristics.

Basic Information

Item	Details
Product Name	4-Methyl-2,3-Dihydro-3-Thiophenesulfonyl Chloride 1,1-Dioxide (Saltdata: Free)
CAS No.	112161-65-6
Molecular Formula	C5H7ClO2S2
Molecular Weight	198.69 g/mol
Synonyms	4-Methyl-2,3-dihydrothiophene-3-sulfonyl chloride 1,1-dioxide; 3-Thiophenesulfonyl chloride, 4-methyl-2,3-dihydro-, 1,1-dioxide; 4-Methyl-2,3-dihydro-3-thiophenesulfonyl chloride S,S-dioxide; 4-Methyl-δ3-thiolene-3-sulfonyl chloride 1,1-dioxide; 4-Methyl-2,5-dihydrothiophene-3-sulfonyl chloride 1,1-dioxide; 3-Sulfonyl chloride-4-methyl-2,3-dihydrothiophene 1,1-dioxide
EINECS	Contact for details

Quality Control

Our production of 4-Methyl-2,3-Dihydro-3-Thiophenesulfonyl Chloride 1,1-Dioxide adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our commitment to cGMP principles and reliable supply chain integrity makes us a trusted partner for critical B2B applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.