Description

4-Methoxybenzenecarbothioic Acid S-Methyl Ester is a specialized organosulfur compound featuring a methoxy-substituted aromatic ring, serving as a versatile building block in advanced organic synthesis. This compound is valued for its role as a key intermediate in the development of pharmaceuticals, agrochemicals, and functional materials. It is primarily sought by research institutions and industrial manufacturers engaged in fine chemical production, medicinal chemistry, and crop protection product development.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those with sulfur-containing heterocycles.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, leveraging its thiocarboxylate ester functionality.
• Ligand and Catalyst Development: Serves as a starting material for creating novel ligands in transition metal catalysis and organocatalysis.
• Material Science Research: Employed in the development of organic semiconductors, liquid crystals, and other advanced polymeric materials.
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying enzyme mechanisms and biological pathways.
• Custom Synthesis and Contract Manufacturing: Supplied to CDMOs (Contract Development and Manufacturing Organizations) for bespoke synthesis projects.

Basic Information

Product Name	4-Methoxybenzenecarbothioic Acid S-Methyl Ester
CAS No.	5925-72-4
Molecular Formula	C9H10O2S
Molecular Weight	182.24 g/mol
Synonyms	S-Methyl 4-Methoxybenzothioate; 4-Methoxybenzenecarbothioic Acid Methyl Ester; p-Methoxybenzothioic Acid S-Methyl Ester; Methyl p-Methoxythiobenzoate; Thiobenzoic Acid, 4-Methoxy-, S-Methyl Ester; Methyl 4-Methoxythiobenzoate
EINECS	227-667-8

Quality Control

Our production of 4-Methoxybenzenecarbothioic Acid S-Methyl Ester adheres to stringent quality management protocols. Each batch is characterized and tested using advanced analytical techniques including HPLC, GC, NMR, and IR spectroscopy to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment, ensuring full traceability and compliance with your internal quality standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider inert gas purging to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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