Description

1-Cyclopentyl-1H-Pyrazole-4-Sulfonyl Chloride is a versatile and reactive sulfonyl chloride derivative, serving as a critical building block in advanced organic synthesis. Its primary value lies in its ability to act as a sulfonylation reagent, enabling the efficient introduction of the sulfonyl functional group into target molecules. This compound is essential for researchers and process chemists in the pharmaceutical and agrochemical industries, particularly for the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially for sulfonamide-based drugs targeting various therapeutic areas.
• Agrochemical Synthesis: Used in the research and production of novel herbicides, fungicides, and insecticides, where the sulfonyl moiety imparts specific biological activity.
• Chemical Biology & Proteomics: Acts as a reactive handle for labeling, modifying, or cross-linking biomolecules in research applications.
• Material Science Research: Employed in the development of specialty polymers and functional materials with tailored properties.
• Custom Synthesis & Contract Manufacturing: A valuable starting material for custom synthesis projects and scale-up processes in fine chemical production.

Basic Information

Product Name	1-Cyclopentyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	1183317-55-6
Molecular Formula	C8H11ClN2O2S
Molecular Weight	234.70 g/mol
Synonyms	1-Cyclopentyl-1H-pyrazole-4-sulfonyl chloride; 1-Cyclopentylpyrazole-4-sulfonyl chloride; 1H-Pyrazole-4-sulfonyl chloride, 1-cyclopentyl-; 4-Pyrazolesulfonyl chloride, 1-cyclopentyl-; Cyclopentylpyrazole sulfonyl chloride
EINECS	Contact for details

Quality Control

Our 1-Cyclopentyl-1H-Pyrazole-4-Sulfonyl 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 research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

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.

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%
Residual Solvents (GC)	Meets ICH guidelines

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