Description

3-(1-Methyl-1H-Pyrazol-5-Yl)Benzenesulphonyl Chloride is a high-value sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its primary commercial value lies in its reactivity as an electrophile, enabling the efficient introduction of the benzenesulfonyl moiety into complex molecular architectures. This compound is essential for research and development chemists in the pharmaceutical and agrochemical industries, particularly for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of drug candidates, especially those targeting enzyme inhibition via sulfonamide group incorporation.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and insecticides where the sulfonyl group is a core pharmacophore.
• Material Science Research: Employed in the creation of specialized polymers and functional materials requiring sulfonated aromatic units.
• Chemical Biology Probes: Acts as a reactive handle for labeling proteins or modifying biomolecules in probe development.
• Custom Synthesis & Contract Manufacturing: A vital reagent for CROs and CDMOs offering bespoke chemical synthesis services.

Basic Information

Product Name	3-(1-Methyl-1H-Pyrazol-5-Yl)Benzenesulphonyl Chloride
CAS No.	941716-85-4
Molecular Formula	C10H9ClN2O2S
Molecular Weight	256.71 g/mol
Synonyms	3-(1-Methyl-1H-pyrazol-5-yl)benzenesulfonyl chloride; 1-Methyl-5-(3-chlorosulfonylphenyl)pyrazole; 3-(1-Methyl-1H-pyrazol-5-yl)benzene-1-sulfonyl chloride; 941716-85-4; 3-(1-Methylpyrazol-5-yl)phenylsulfonyl chloride; 5-(3-Chlorosulfonylphenyl)-1-methyl-1H-pyrazole; Benzenesulfonyl chloride, 3-(1-methyl-1H-pyrazol-5-yl)-
EINECS	Contact for details

Quality Control

Our 3-(1-Methyl-1H-Pyrazol-5-Yl)Benzenesulphonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for advanced synthetic applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every lot upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 decomposition. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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