Description

4,5-Dimethyl-1,3,2-Dioxathiolane 2-Oxide is a specialized cyclic sulfite ester, a high-purity chemical intermediate of significant interest in advanced organic synthesis. Its value lies in its role as a versatile building block and a reactive intermediate for introducing functional groups under controlled conditions. This compound is essential for research and development chemists, particularly in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to create novel molecular architectures and active ingredients.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polymers and resins.
• Ligand and Catalyst Development: Employed in the preparation of chiral ligands and organocatalysts for asymmetric synthesis.
• Chemical Research: A valuable reagent in academic and industrial R&D for exploring new organic reactions and methodologies.
• Fine Chemical Production: Utilized in the manufacture of flavors, fragrances, and other high-value specialty chemicals.

Basic Information

Product Name	4,5-Dimethyl-1,3,2-Dioxathiolane 2-Oxide
CAS No.	4440-90-8
Molecular Formula	C4H8O3S
Molecular Weight	136.17 g/mol
Synonyms	4,5-Dimethyl-1,3,2-dioxathiolane 2-oxide; 2,3-Dimethyl-1,4,2-dioxathiolane 4-oxide; 4,5-Dimethyl-2-sulfolene; 3,4-Dimethyl-1,2-oxathiolane 2-oxide; Dimethyl sulfolene; 2,3-Dimethylbutadiene sulfone; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Every batch of 4,5-Dimethyl-1,3,2-Dioxathiolane 2-Oxide is manufactured under strict quality management protocols. We ensure compliance with relevant industry standards through rigorous in-process and final release testing, which includes identity confirmation, purity assay, and impurity profiling. A comprehensive Certificate of Analysis (COA) detailing all specifications and test results is provided with each shipment to guarantee traceability and product integrity for your quality assurance systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

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