Description

4-Methylthiobenzoic Acid S-Methyl Ester is a versatile sulfur-containing aromatic ester, a key intermediate in advanced organic synthesis. Its unique structure, featuring both a thioether and an ester functional group, makes it a valuable building block for constructing complex molecules. This compound is primarily sought after by research and development laboratories, as well as production facilities in the pharmaceutical and agrochemical sectors, for the synthesis of active ingredients and novel chemical entities.

Application

• Pharmaceutical Intermediate: Serves as a crucial precursor in the synthesis of drug candidates, particularly those targeting specific enzyme pathways where the methylthio moiety is essential.
• Agrochemical Synthesis: Used in the development and production of herbicides, fungicides, and insecticides, where its aromatic-thioether structure contributes to biological activity.
• Ligand and Catalyst Development: Acts as a starting material for creating specialized ligands used in transition metal catalysis and organometallic chemistry.
• Material Science Research: Employed in the synthesis of monomers or additives for advanced polymers and functional materials.
• Chemical Reference Standard: Supplied as a high-purity standard for analytical method development and quality control in related chemical processes.
• Custom Synthesis Building Block: Provides a versatile scaffold for medicinal chemistry and process chemistry research to explore new chemical spaces.

Basic Information

Product Name	4-Methylthiobenzoic Acid S-Methyl Ester
CAS No.	5925-77-9
Molecular Formula	C9H10O2S
Molecular Weight	182.24 g/mol
Synonyms	Methyl 4-(Methylthio)benzoate; 4-(Methylthio)benzoic Acid Methyl Ester; Benzoic acid, 4-(methylthio)-, methyl ester; Methyl p-(Methylthio)benzoate; p-(Methylmercapto)benzoic Acid Methyl Ester; Methyl 4-Methylthiobenzoate
EINECS	227-661-5

Quality Control

Our production of 4-Methylthiobenzoic Acid S-Methyl Ester adheres to stringent quality management protocols. Every batch is analyzed using advanced techniques like GC and HPLC to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all critical parameters. Our quality systems are designed to support cGMP requirements for pharmaceutical intermediates, ensuring traceability and reliability for our global B2B clients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and strong bases.

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.