Description

1-Phenyl-1H-Pyrazole-4-Sulfonyl Chloride is a high-purity, reactive sulfonyl chloride derivative used as a critical building block in advanced organic synthesis. Its value lies in its role as a versatile sulfonylation reagent, enabling the efficient introduction of the 1-phenylpyrazole-4-sulfonyl moiety into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, particularly for developing active ingredients and novel chemical entities.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially for compounds requiring sulfonamide or sulfonate ester functional groups.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides where the pyrazole-sulfonyl scaffold imparts specific biological activity.
• Chemical Research & Development: Serves as a versatile building block in medicinal chemistry for creating compound libraries and exploring structure-activity relationships (SAR).
• Material Science: Potential use in the synthesis of specialty polymers or functional materials that incorporate sulfonyl linkages.
• Custom Synthesis & Contract Manufacturing: Employed by CDMOs (Contract Development and Manufacturing Organizations) for the production of client-specific molecules on a commercial scale.

Basic Information

Product Name	1-Phenyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	18336-37-3
Molecular Formula	C9H7ClN2O2S
Molecular Weight	242.68 g/mol
Synonyms	1-Phenyl-1H-pyrazole-4-sulfonyl chloride; 1-Phenylpyrazole-4-sulfonyl chloride; 4-(Chlorosulfonyl)-1-phenyl-1H-pyrazole; 1-Phenyl-4-sulfonylchloridepyrazole; 1-Phenyl-1H-4-pyrazolesulfonyl chloride; 1-Phenylpyrazol-4-ylsulfonyl chloride; 18336-37-3; 1-Phenyl-1H-pyrazole-4-sulfonchlorid
EINECS	Contact for details

Quality Control

Our 1-Phenyl-1H-Pyrazole-4-Sulfonyl Chloride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing purity, identity, and impurity profiles. Our quality systems are designed to meet the stringent requirements of pharmaceutical and fine chemical industries, supporting your R&D and production needs with reliable, specification-grade material.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (typically 15-25°C). This compound is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent decomposition. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
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.