Description

4-(1-Methyl-1H-Pyrazol-3-Yl)Benzenesulphonyl Chloride 97% is a high-purity sulfonyl chloride derivative, a critical building block in advanced organic synthesis. This compound is valued for its role as a key electrophilic intermediate, enabling the introduction of the sulfonamide functional group into target molecules. It is primarily utilized by research institutions and pharmaceutical manufacturers engaged in the development of novel active pharmaceutical ingredients (APIs), agrochemicals, and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of sulfonamide-based drug candidates, including kinase inhibitors and other targeted therapies.
• Agrochemical Research: Used to create novel sulfonamide herbicides, fungicides, and plant growth regulators with specific modes of action.
• Material Science: Serves as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Chemical Biology Probes: Employed in the design and synthesis of activity-based probes for studying enzyme function and protein interactions.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of complex molecules on a commercial scale.

Basic Information

Product Name	4-(1-Methyl-1H-Pyrazol-3-Yl)Benzenesulphonyl Chloride 97%
CAS No.	916766-81-9
Molecular Formula	C10H9ClN2O2S
Molecular Weight	256.71 g/mol
Synonyms	4-(1-Methyl-1H-pyrazol-3-yl)benzenesulfonyl chloride; 4-(1-Methyl-1H-pyrazol-3-yl)benzene-1-sulfonyl chloride; 1-Methyl-3-(4-(chlorosulfonyl)phenyl)-1H-pyrazole; 916766-81-9; 4-(1-Methylpyrazol-3-yl)benzenesulfonyl chloride; 3-(4-Chlorosulfonylphenyl)-1-methyl-1H-pyrazole
EINECS	Contact for details

Quality Control

Our 4-(1-Methyl-1H-Pyrazol-3-Yl)Benzenesulphonyl Chloride 97% is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the specified 97% minimum purity. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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 heat, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Water Content (KF)	≤ 0.5%

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