Description

5-Chloro-2,3-Dihydro-2-Oxobenzoxazole-6-Sulfonic Acid Chloride is a high-value sulfonyl chloride derivative and a key synthetic intermediate in advanced organic chemistry. This compound matters for its dual reactive sites, enabling the efficient construction of complex heterocyclic and sulfonamide-based molecules. It is primarily needed by pharmaceutical, agrochemical, and specialty chemical R&D and manufacturing sectors for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Core building block for the synthesis of novel benzoxazole-based drug candidates, including potential kinase inhibitors and antimicrobial agents.
• Agrochemical Synthesis: Used in creating advanced herbicides, fungicides, and plant growth regulators that require the sulfonamide pharmacophore.
• Dye & Pigment Manufacturing: Serves as a precursor for sulfonated dyes and optical brighteners, imparting water solubility and color fastness.
• Polymer Chemistry: Employed in the production of specialty polymers and resins, where it acts as a monomer or cross-linking agent to introduce sulfonyl groups.
• Chemical Research (R&D): A versatile reagent in academic and industrial laboratories for exploring new synthetic pathways and material properties.
• Ligand & Catalyst Development: Useful for synthesizing complex ligands for metal catalysis and molecular recognition applications.

Basic Information

Item	Details
Product Name	5-Chloro-2,3-Dihydro-2-Oxobenzoxazole-6-Sulfonic Acid Chloride
CAS No.	5791-05-9
Molecular Formula	C7H3Cl2NO4S
Molecular Weight	268.07 g/mol
Synonyms	6-Chlorosulfonyl-5-chloro-2,3-dihydro-2-oxobenzoxazole; 5-Chloro-2-benzoxazolinone-6-sulfonyl chloride; 5-Chloro-2-oxo-2,3-dihydrobenzoxazole-6-sulfonyl chloride; 5-Chloro-2-hydroxybenzoxazole-6-sulfonyl chloride; 5-Chloro-2(3H)-benzoxazolone-6-sulfonyl chloride; 5-Chloro-2,3-dihydro-2-oxo-1,3-benzoxazole-6-sulfonyl chloride; 5791-05-9
EINECS	Contact for details

Quality Control

Our 5-Chloro-2,3-Dihydro-2-Oxobenzoxazole-6-Sulfonic Acid Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for sensitive synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

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 sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from moisture, strong bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Solubility	Soluble in common organic solvents (e.g., DMF, THF, acetonitrile)

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