Description

3-(Methylthio)Phenyl Isocyanate is a specialized aromatic isocyanate monomer featuring a methylthio substituent. This compound is valued for its role as a key building block in the synthesis of advanced polymers and fine chemicals, offering unique reactivity and property modification capabilities. It is primarily sought after by R&D chemists and process engineers in the agrochemical, pharmaceutical, and specialty polymer industries for creating novel urethane linkages and heterocyclic compounds.

Application

• Agrochemical Intermediates: A crucial precursor in the synthesis of novel herbicides, fungicides, and plant growth regulators, where the isocyanate group enables the formation of urea and carbamate derivatives.
• Pharmaceutical Building Blocks: Used in medicinal chemistry for constructing pharmacologically active molecules, particularly those requiring specific aryl-urea or heterocyclic scaffolds.
• Polymer Modification: Serves as a reactive monomer or cross-linking agent in the production of specialty polyurethanes, coatings, and adhesives to impart specific chemical resistance or adhesion properties.
• Chemical Research & Development: Employed in academic and industrial labs for developing new synthetic methodologies and exploring novel material properties.
• Dye and Pigment Synthesis: Acts as an intermediate in the manufacture of specialized colorants and photographic chemicals.

Basic Information

Product Name	3-(Methylthio)Phenyl Isocyanate
CAS No.	28479-19-8
Molecular Formula	C8H7NOS
Molecular Weight	165.21 g/mol
Synonyms	3-(Methylmercapto)phenyl isocyanate; m-(Methylthio)phenyl isocyanate; 1-Isocyanato-3-(methylthio)benzene; 3-Methylsulfanylphenyl isocyanate; Isocyanic acid, 3-(methylthio)phenyl ester; 3-Methylmercaptophenyl isocyanate
EINECS	Contact for details

Quality Control

Our production of 3-(Methylthio)Phenyl Isocyanate adheres to stringent internal quality protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15-25°C (59-77°F). Due to its hygroscopic and moisture-sensitive nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent degradation and polymerization. Keep away from heat, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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