Description

3-Methylisothiazole is a versatile heterocyclic organic compound that serves as a crucial building block in advanced chemical synthesis. Its unique isothiazole core makes it a valuable intermediate for developing active ingredients in pharmaceuticals and agrochemicals. This high-purity compound is essential for research and production in the pharmaceutical, agrochemical, and specialty chemical industries, where precise molecular architecture is required.

Application

The isothiazole ring system is a privileged scaffold in medicinal and agricultural chemistry. 3-Methylisothiazole (CAS 693-92-5) is primarily utilized as a key synthetic intermediate in the following areas:

• Pharmaceutical Intermediates: Serves as a core building block for the synthesis of novel drug candidates, particularly in central nervous system (CNS) and anti-infective research.
• Agrochemical Synthesis: Used in the production of modern fungicides, herbicides, and insecticides, where the isothiazole moiety contributes to biological activity.
• Material Science: Acts as a precursor for functional polymers, corrosion inhibitors, and specialty dyes.
• Chemical Research: Employed in academic and industrial R&D for exploring new heterocyclic chemistry and developing novel catalytic processes.
• Ligand and Catalyst Development: Useful for constructing complex ligands used in coordination chemistry and homogeneous catalysis.

Basic Information

Product Name	3-Methylisothiazole
CAS No.	693-92-5
Molecular Formula	C4H5NS
Molecular Weight	99.15 g/mol
Synonyms	3-Methyl-1,2-thiazole; 3-Methylisothiazole; 3-Methyl-δ2-thiazoline; Isothiazole, 3-methyl-; 3-Methyl-2-thiazoline; 3-Methyl-4,5-dihydroisothiazole
EINECS	211-764-3

Quality Control

Our 3-Methylisothiazole is manufactured under strict quality management systems. Every batch is subjected to comprehensive analytical testing, including GC, HPLC, and NMR, to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring high-purity intermediates under cGMP or ISO 9001 frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Purity (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC)	Total impurities ≤ 2.0%

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