Description

4-Chloro-5-Methylisothiazole is a versatile heterocyclic building block of significant importance in advanced organic synthesis. Its core value lies in its functionalized isothiazole ring, which serves as a key precursor for the development of complex molecules, particularly in the agrochemical and pharmaceutical sectors. This compound is essential for researchers and manufacturers developing novel active ingredients, including fungicides, herbicides, and pharmaceutical intermediates.

Application

• Agrochemical Synthesis: A critical intermediate in the production of modern fungicides and herbicides, where the isothiazole moiety contributes to biological activity.
• Pharmaceutical Intermediates: Serves as a building block for the synthesis of drug candidates, particularly those targeting infectious diseases or requiring heterocyclic scaffolds.
• Material Science Research: Used in the development of novel polymers, ligands, and functional materials with specific electronic or binding properties.
• Chemical Synthesis: Acts as a versatile reagent for constructing more complex nitrogen- and sulfur-containing heterocycles in academic and industrial R&D.
• Dye and Pigment Intermediates: Employed in the synthesis of specialized dyes and pigments where the chloromethylisothiazole group modifies color and stability.

Basic Information

Product Name	4-Chloro-5-Methylisothiazole
CAS No.	930-44-9
Molecular Formula	C4H4ClNS
Molecular Weight	133.60 g/mol
Synonyms	5-Methyl-4-chloroisothiazole; 4-Chloro-5-methyl-1,2-thiazole; 4-Chloro-5-methyl-δ2-1,2-thiazoline; Isothiazole, 4-chloro-5-methyl-; 930-44-9
EINECS	Contact for details

Quality Control

Our 4-Chloro-5-Methylisothiazole is produced under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and organic solvents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.