Description

1-Isobutyl-3-Methyl-1H-Pyrazole-4-Sulfonyl Chloride is a high-value sulfonyl chloride derivative, a critical building block in modern organic synthesis. Its primary value lies in its reactivity as a sulfonylation reagent, enabling the efficient introduction of the sulfonyl functional group into target molecules. This compound is essential for researchers and manufacturers in the pharmaceutical and agrochemical industries, where it is used to create novel active ingredients and advanced intermediates.

Application

• Pharmaceutical Intermediate: Key building block for the synthesis of sulfonamide-based drug candidates, including kinase inhibitors and other small molecule therapeutics.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and insecticides that incorporate sulfonyl moieties for enhanced efficacy.
• Chemical Research & Development: A versatile reagent in medicinal chemistry and process chemistry for constructing complex molecular architectures.
• Material Science: Potential precursor for functional polymers or specialty chemicals requiring sulfonyl chloride chemistry.
• Custom Synthesis: Serves as a starting material for contract research organizations (CROs) and CDMOs producing bespoke compounds for clients.

Basic Information

Product Name	1-Isobutyl-3-Methyl-1H-Pyrazole-4-Sulfonyl Chloride
CAS No.	1006453-74-2
Molecular Formula	C₉H₁₅ClN₂O₂S
Molecular Weight	250.74 g/mol
Synonyms	1-Isobutyl-3-methyl-1H-pyrazole-4-sulfonyl chloride; 3-Methyl-1-isobutyl-1H-pyrazole-4-sulfonyl chloride; 1H-Pyrazole-4-sulfonyl chloride, 1-isobutyl-3-methyl-; 4-Sulfonyl chloride-1-isobutyl-3-methylpyrazole; 1-(2-Methylpropyl)-3-methyl-1H-pyrazole-4-sulfonyl chloride
EINECS	Contact for details

Quality Control

Our 1-Isobutyl-3-Methyl-1H-Pyrazole-4-Sulfonyl Chloride is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to ensure high purity and consistent chemical identity. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support cGMP standards for advanced pharmaceutical applications.

Storage

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

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.