Description

1-tert-Butyl-1H-Pyrazole-4-Sulfonyl Chloride is a high-purity, versatile sulfonyl chloride derivative used as a key synthetic intermediate in advanced organic chemistry. Its primary value lies in its reactivity as a sulfonylation reagent, enabling the efficient construction of sulfonamide and sulfonate ester linkages. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for the development of active ingredients and fine chemicals requiring the 1-tert-butylpyrazole scaffold.

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel drug candidates, especially in medicinal chemistry programs targeting enzyme inhibitors and receptor modulators.
• Agrochemical Synthesis: Used in the development of advanced pesticides, herbicides, and fungicides where the sulfonamide group imparts specific biological activity.
• Chemical Research & Development: Serves as a versatile reagent in academic and industrial R&D labs for exploring new chemical entities and reaction pathways.
• Material Science: Potential use in the synthesis of specialty polymers and functional materials that incorporate sulfonamide or sulfonate functional groups.
• Custom Synthesis & Contract Manufacturing: A key starting material for custom synthesis projects requiring high-purity, structurally complex intermediates.

Basic Information

Product Name	1-tert-Butyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	1156603-97-2
Molecular Formula	C7H11ClN2O2S
Molecular Weight	222.69 g/mol
Synonyms	1-(tert-Butyl)-1H-pyrazole-4-sulfonyl chloride; 1-tert-Butylpyrazole-4-sulfonyl chloride; 1-(1,1-Dimethylethyl)-1H-pyrazole-4-sulfonyl chloride; 1-tert-Butyl-1H-pyrazole-4-sulfonylchloride; 1-tert-Butyl-1H-pyrazole-4-sulfonic acid chloride; 1-(tert-Butyl)-1H-pyrazole-4-sulfonic acid chloride; 4-(Chlorosulfonyl)-1-tert-butyl-1H-pyrazole; 1-tert-Butylpyrazole-4-sulfonic acid chloride
EINECS	Contact for details

Quality Control

Our 1-tert-Butyl-1H-Pyrazole-4-Sulfonyl Chloride is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via NMR and IR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) with detailed specifications are provided for every shipment, ensuring full traceability and compliance with customer requirements.

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 from atmospheric moisture. Keep away from heat, sparks, and open flame.

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%
Residue on Ignition	≤ 0.1%

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