Description

5H-1,2-Oxathiole-3-Carbonylchloride,5-Oxo-,2,2-Dioxide(9Ci) is a specialized heterocyclic sulfonyl chloride derivative, serving as a high-value building block in advanced organic synthesis. Its core value lies in its unique reactivity profile, enabling the efficient introduction of the 1,2-oxathiole-2,2-dioxide scaffold into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for developing novel active ingredients and fine chemicals where precise molecular architecture is critical.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of novel drug candidates, particularly those targeting sulfonamide-based pharmacophores.
• Agrochemical Synthesis: Used in the research and development of new herbicides, fungicides, and insecticides with unique modes of action.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced functional materials.
• Chemical Biology Probes: Utilized to create activity-based probes for studying enzyme function and biological pathways.
• Ligand and Catalyst Development: Acts as a precursor for synthesizing complex ligands used in asymmetric catalysis and coordination chemistry.
• Custom Synthesis & Contract Manufacturing: A critical starting material for custom synthesis projects requiring the 1,2-oxathiole dioxide core structure.

Basic Information

Product Name	5H-1,2-Oxathiole-3-Carbonylchloride,5-Oxo-,2,2-Dioxide(9Ci)
CAS No.	70873-59-5
Molecular Formula	C4H2ClNO4S
Molecular Weight	195.58 g/mol
Synonyms	5-Oxo-5H-1,2-oxathiole-3-carbonyl chloride 2,2-dioxide; 1,2-Oxathiole-3-carbonyl chloride, 5-oxo-, 2,2-dioxide; 5-Oxo-2,2-dioxo-2λ6-1,2-oxathiole-3-carbonyl chloride; 3-Chlorocarbonyl-5-oxo-1,2-oxathiole 2,2-dioxide; 5-Oxo-δ4-1,2-oxathiol-3-carboxylic acid chloride S,S-dioxide; Propanedioic acid, (chlorocarbonyl)-, cyclic sulfite (1:1); Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our production of 5H-1,2-Oxathiole-3-Carbonylchloride,5-Oxo-,2,2-Dioxide(9Ci) adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure consistent high quality and reliable performance in your synthetic processes. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment.

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 incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 1.0%
Total Impurities (HPLC)	≤ 3.0%

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