Description

3-Methoxybenzenethiol is a versatile aromatic thiol derivative characterized by a methoxy-substituted benzene ring. This compound serves as a critical building block and intermediate in advanced organic synthesis, offering a reactive thiol group for creating sulfur-containing molecules. It is essential for research and production in the pharmaceutical, agrochemical, and specialty chemical industries, where precise molecular architecture is required.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfur heterocycles or thioether linkages.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides, where the thiol group acts as a reactive site for constructing complex molecules.
• Ligand and Catalyst Preparation: Serves as a starting material for synthesizing specialized ligands used in metal-catalyzed cross-coupling reactions and other catalytic processes.
• Polymer Modification: Acts as a chain transfer agent or functional monomer to introduce sulfur moieties into polymers, altering their physical and chemical properties.
• Flavor and Fragrance Industry: Intermediate for creating specific sulfur-containing aroma compounds, contributing to complex scent profiles.
• Material Science Research: Employed in the development of novel organic electronic materials, self-assembled monolayers (SAMs), and metal-organic frameworks (MOFs).

Basic Information

Product Name	3-Methoxybenzenethiol
CAS No.	15570-12-4
Molecular Formula	C7H8OS
Molecular Weight	140.20 g/mol
Synonyms	3-Methoxythiophenol; m-Methoxythiophenol; 3-Methoxybenzenethiol; 3-Methoxy-1-benzenethiol; m-Methoxybenzenethiol; 3-Methoxyphenyl mercaptan; (3-Methoxyphenyl)thiol; 1-Methoxy-3-mercaptobenzene
EINECS	239-623-5

Quality Control

Our production of 3-Methoxybenzenethiol adheres to stringent quality management protocols. Every batch is analyzed using advanced techniques including GC, HPLC, and NMR to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant specifications. Our quality system is designed to meet the rigorous demands of cGMP and ISO standards for fine chemical manufacturing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, open flames, and strong oxidizing agents. Due to its light-sensitive nature, containers should be amber-colored or stored in darkness.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (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.