Description

2-Methyl-5-(3-Methyl-5-Isoxazolyl)Benzenesulfonyl Chloride is a high-purity sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its value lies in its reactivity as a sulfonylation agent, enabling the introduction of the benzenesulfonyl moiety into complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for developing novel active ingredients and fine chemicals. CAS No. 1284186-31-7.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, especially in medicinal chemistry programs targeting enzyme inhibition.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and insecticides with specific sulfonamide-based activity.
• Chemical Biology & Proteomics: Acts as a reactive handle for labeling or modifying biomolecules in probe development and activity-based protein profiling (ABPP).
• Material Science Research: Employed in the creation of specialty polymers and functional materials where the sulfonyl group imparts specific chemical or physical properties.
• Custom Synthesis & Contract Manufacturing: A vital reagent for custom synthesis houses and CDMOs (Contract Development and Manufacturing Organizations) producing bespoke compounds for clients.

Basic Information

Item	Details
Product Name	2-Methyl-5-(3-Methyl-5-Isoxazolyl)Benzenesulfonyl Chloride
CAS No.	1284186-31-7
Molecular Formula	C11H10ClNO3S
Molecular Weight	271.72 g/mol
Synonyms	5-(3-Methylisoxazol-5-yl)-2-methylbenzenesulfonyl chloride; 2-Methyl-5-(3-methyl-1,2-oxazol-5-yl)benzenesulfonyl chloride; 3-Methyl-5-(5-methyl-2-sulfophenyl)isoxazole chloride; 1284186-31-7; 2-Methyl-5-(3-methyl-5-isoxazolyl)phenylsulfonyl chloride
EINECS	Contact for details

Quality Control

Every batch of 2-Methyl-5-(3-Methyl-5-Isoxazolyl)Benzenesulfonyl Chloride is manufactured under strict quality management protocols. We ensure compliance with high-purity standards suitable for research and commercial synthesis. Comprehensive analytical testing, including HPLC, NMR, and mass spectrometry, is performed to verify identity, purity, and consistency. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and meet your quality assurance requirements.

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, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
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.