Description

5-(1,3-Dimethyl-1H-Pyrazol-4-Yl)-Isoxazole-4-Sulfonyl Chloride is a high-purity, advanced pharmaceutical intermediate and versatile chemical building block. This compound is valued for its reactive sulfonyl chloride group, which enables efficient derivatization and coupling reactions in complex organic syntheses. It is primarily sought by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for the development of novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of potential drug candidates, particularly for targeted therapies.
• Agrochemical Research: Used in the development of new herbicides, fungicides, and insecticides with novel modes of action.
• Chemical Biology: Serves as a reactive handle for bioconjugation and probe development in proteomics and diagnostic research.
• Material Science: Employed in the synthesis of specialized polymers and functional materials requiring specific heterocyclic motifs.
• Organic Synthesis: A versatile building block for constructing complex heterocyclic frameworks in academic and industrial R&D.

Basic Information

Product Name	5-(1,3-Dimethyl-1H-Pyrazol-4-Yl)-Isoxazole-4-Sulfonyl Chloride
CAS No.	1005632-94-9
Molecular Formula	C8H8ClN3O3S
Molecular Weight	261.68 g/mol
Synonyms	5-(1,3-Dimethyl-1H-pyrazol-4-yl)isoxazole-4-sulfonyl chloride; 4-Isoxazolesulfonyl chloride, 5-(1,3-dimethyl-1H-pyrazol-4-yl)-; 1,3-Dimethyl-4-(4-(chlorosulfonyl)isoxazol-5-yl)-1H-pyrazole; 5-(1,3-Dimethylpyrazol-4-yl)isoxazole-4-sulfonyl chloride; Isoxazole-4-sulfonyl chloride, 5-(1,3-dimethyl-1H-pyrazol-4-yl)-; CAS 1005632-94-9
EINECS	Contact for details

Quality Control

Our 5-(1,3-Dimethyl-1H-Pyrazol-4-Yl)-Isoxazole-4-Sulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure high chemical purity and structural integrity. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance and regulatory compliance needs.

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). This material is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) in its original packaging to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

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