Description

1-Isobutyl-3,5-Dimethyl-1H-Pyrazole-4-Sulfonyl Chloride is a high-purity sulfonyl chloride derivative, a key reactive intermediate in modern synthetic chemistry. Its primary value lies in its role as a versatile building block 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 a reliable and high-quality source for advanced synthesis.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of novel drug candidates, particularly for creating sulfonamide-based pharmacophores with potential therapeutic activity.
• Agrochemical Synthesis: Used in the development of next-generation herbicides, fungicides, and insecticides, where the sulfonyl chloride group enables the introduction of specific bioactive moieties.
• Functional Material Development: Serves as a key reagent for modifying polymers and surfaces to introduce sulfonamide functionalities, enhancing material properties for specialized applications.
• Chemical Research & Development: An indispensable tool in academic and industrial R&D labs for exploring new synthetic pathways and creating libraries of compounds for screening.
• Dye and Pigment Manufacturing: Employed in the synthesis of specialized dyes and pigments where sulfonamide linkages provide improved stability and color properties.

Basic Information

Product Name	1-Isobutyl-3,5-Dimethyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	1156602-97-9
Molecular Formula	C9H15ClN2O2S
Molecular Weight	250.75 g/mol
Synonyms	1-Isobutyl-3,5-dimethylpyrazole-4-sulfonyl chloride; 4-Sulfonyl chloride-1-isobutyl-3,5-dimethylpyrazole; 1H-Pyrazole-4-sulfonyl chloride, 1-(2-methylpropyl)-3,5-dimethyl-; 3,5-Dimethyl-1-isobutyl-1H-pyrazole-4-sulfonyl chloride; Pyrazole-4-sulfonyl chloride derivative; Isobutyl dimethylpyrazole sulfonyl chloride
EINECS	Contact for details

Quality Control

Our 1-Isobutyl-3,5-Dimethyl-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 by NMR and IR spectroscopy, to ensure it meets the high standards required for advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

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. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	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.