Description

1-Propyl-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 role as a key intermediate for constructing complex molecules, particularly in the development of active pharmaceutical ingredients (APIs) and agrochemicals. This compound is essential for research and production chemists in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates for coupling and functionalization reactions.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of sulfonamide-based drug candidates, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides that incorporate the sulfonyl moiety for enhanced activity.
• Chemical Research & Development: Employed in academic and industrial R&D for exploring new reaction pathways and creating specialized chemical libraries.
• Material Science: Acts as a functionalization agent for modifying polymers or surfaces to introduce sulfonamide groups, altering material properties.
• Custom Synthesis & Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for the production of client-specific target molecules.

Basic Information

Product Name	1-Propyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	1006348-63-5
Molecular Formula	C6H9ClN2O2S
Molecular Weight	208.67 g/mol
Synonyms	1-Propyl-1H-pyrazole-4-sulfonyl chloride; 1-Propylpyrazole-4-sulfonyl chloride; 4-Sulfonyl chloride-1-propylpyrazole; 1-Propyl-4-sulfonylchloride pyrazole; 1-n-Propyl-1H-pyrazole-4-sulfonyl chloride; Pyrazole-4-sulfonyl chloride, 1-propyl-; 1H-Pyrazole-4-sulfonyl chloride, 1-propyl-
EINECS	Contact for details

Quality Control

Our 1-Propyl-1H-Pyrazole-4-Sulfonyl Chloride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for sensitive synthetic applications. We provide comprehensive analytical data, including HPLC purity, NMR, and mass spectrometry confirmation. Certificates of Analysis (COA) are available for every batch upon request, detailing all relevant specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (typically 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% (Area %)
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.