Description

4-(3,5-Dimethyl-1H-Pyrazol-1-Yl)Benzenesulfonyl Chloride is a high-value sulfonyl chloride derivative, serving as a critical synthetic intermediate and reactive building block in advanced organic synthesis. Its core value lies in enabling the introduction of the sulfonamide functional group, which is pivotal for modulating the biological activity and physicochemical properties of target molecules. This compound is essential for research and development chemists in the pharmaceutical and agrochemical industries, where it is used to create novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of sulfonamide-based drug candidates, including kinase inhibitors and antimicrobial agents.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and pesticides that require the sulfonamide pharmacophore.
• Material Science Research: Acts as a monomer or cross-linking agent in the creation of functional polymers and advanced materials.
• Chemical Biology Probes: Utilized to create activity-based probes and affinity labels for studying enzyme function and protein interactions.
• Dye and Pigment Manufacturing: Intermediate in the synthesis of specialized sulfonated dyes and colorants.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs for the production of client-specific target molecules on laboratory to pilot scale.

Basic Information

Product Name	4-(3,5-Dimethyl-1H-Pyrazol-1-Yl)Benzenesulfonyl Chloride
CAS No.	61320-20-5
Molecular Formula	C11H11ClN2O2S
Molecular Weight	270.74 g/mol
Synonyms	4-(3,5-Dimethyl-1H-pyrazol-1-yl)benzenesulfonyl chloride; 1-[4-(Chlorosulfonyl)phenyl]-3,5-dimethyl-1H-pyrazole; 3,5-Dimethyl-1-(4-sulfonylchlorophenyl)pyrazole; 4-(3,5-Dimethylpyrazol-1-yl)benzenesulfonyl chloride; p-(3,5-Dimethyl-1-pyrazolyl)benzenesulfonyl chloride; Benzenesulfonyl chloride, 4-(3,5-dimethyl-1H-pyrazol-1-yl)-; 61320-20-5 (CAS)
EINECS	Contact for details

Quality Control

Our 4-(3,5-Dimethyl-1H-Pyrazol-1-Yl)Benzenesulfonyl Chloride is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical specifications. Our quality commitment ensures the material meets the high standards required for research and process development applications.

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 heat, sparks, 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
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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