Description

1-Ethyl-1H-Pyrazole-4-Sulfonyl Chloride is a versatile and reactive sulfonyl chloride derivative, a key building block in advanced organic synthesis. Its primary value lies in its role as a sulfonylation reagent, enabling the efficient introduction of the sulfonamide functional group into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for the development of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, especially those containing sulfonamide moieties with potential biological activity.
• Agrochemical Synthesis: Used in the development of new herbicides, fungicides, and insecticides where the sulfonamide group is a key pharmacophore.
• Material Science Research: Employed in the creation of functional polymers and advanced materials with specific surface properties.
• Chemical Biology Probes: Serves as a reagent for labeling and modifying biomolecules to study protein function and interactions.
• Custom Synthesis & Contract Manufacturing: A fundamental building block for custom chemical synthesis services targeting specialized, high-value compounds.

Basic Information

Product Name	1-Ethyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	957514-21-5
Molecular Formula	C5H7ClN2O2S
Molecular Weight	194.64 g/mol
Synonyms	1-Ethyl-1H-pyrazole-4-sulfonyl chloride; 1-Ethylpyrazole-4-sulfonyl chloride; 4-(Chlorosulfonyl)-1-ethyl-1H-pyrazole; 1-Ethyl-4-sulfonylchloride-pyrazole; 1-Ethylpyrazole-4-sulphonyl chloride; Pyrazole-4-sulfonyl chloride, 1-ethyl-; 957514-21-5
EINECS	Contact for details

Quality Control

Our 1-Ethyl-1H-Pyrazole-4-Sulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) documenting all critical quality parameters are available upon request.

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 decomposition.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
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.