Description

5-(3,4-Dimethyl-5-Isoxazolyl)-2-Furansulfonyl Chloride is a high-purity, specialized sulfonyl chloride derivative used as a critical building block in advanced organic synthesis. This compound matters for its role as a key electrophilic reagent, enabling the introduction of the unique 5-(3,4-dimethyl-5-isoxazolyl)-2-furansulfonyl moiety into target molecules. It is primarily needed by research and development chemists in the pharmaceutical and agrochemical industries for creating novel active ingredients and intermediates.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly in medicinal chemistry programs targeting new therapeutic agents.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides, leveraging its unique heterocyclic structure.
• Chemical Biology Probe Development: Employed to create sulfonamide-based probes and activity-based protein profiling (ABPP) reagents for target identification and validation.
• Material Science Research: Serves as a monomer or functionalization agent in the synthesis of specialized polymers and advanced organic materials.
• Custom Synthesis & Contract Manufacturing: A vital reagent for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) producing bespoke intermediates for clients.

Basic Information

Product Name	5-(3,4-Dimethyl-5-Isoxazolyl)-2-Furansulfonyl Chloride
CAS No.	1285177-04-9
Molecular Formula	C9H8ClNO4S
Molecular Weight	261.68 g/mol
Synonyms	5-(3,4-Dimethylisoxazol-5-yl)furan-2-sulfonyl chloride; 2-Furansulfonyl chloride, 5-(3,4-dimethyl-5-isoxazolyl)-; 5-(3,4-Dimethyl-1,2-oxazol-5-yl)furan-2-sulfonyl chloride; 5-(3,4-Dimethyl-5-isoxazolyl)-2-furansulphonyl chloride; 5-(3,4-Dimethylisoxazole-5-yl)-2-furoylsulfonyl chloride (common misnomer); 1285177-04-9 (CAS-based identifier); 5-(3,4-Dimethyl-5-isoxazolyl)furan-2-sulfonyl chloride
EINECS	Contact for details

Quality Control

Our 5-(3,4-Dimethyl-5-Isoxazolyl)-2-Furansulfonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for research and process development. Certificates of Analysis (COA) with detailed chromatographic data are provided for full traceability and quality assurance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 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.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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