Description

4-Methoxybenzenethiol is a versatile organosulfur compound featuring a thiol group attached to a methoxy-substituted benzene ring. This structure makes it a valuable building block and intermediate in the synthesis of more complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is primarily sought after by research institutions and industrial manufacturers involved in fine chemical synthesis, material science, and ligand development.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of various active pharmaceutical ingredients (APIs), especially those containing sulfur-based functional groups.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides where the thiol moiety imparts specific biological activity.
• Polymer & Material Science: Acts as a chain transfer agent or modifier in polymerization reactions and as a building block for functional materials.
• Ligand & Catalyst Development: Employed in the preparation of metal-complexing ligands for catalysis and coordination chemistry.
• Chemical Research: Utilized in organic synthesis laboratories for the introduction of the 4-methoxyphenylthio group into target molecules.
• Flavor & Fragrance Industry: May serve as an intermediate for certain aroma chemicals, though typically in highly purified grades.

Basic Information

Product Name	4-Methoxybenzenethiol
CAS No.	696-63-9
Molecular Formula	C7H8OS
Molecular Weight	140.20 g/mol
Synonyms	p-Methoxythiophenol; 4-Methoxythiophenol; p-Methoxybenzenethiol; 1-Methoxy-4-mercaptobenzene; 4-Mercaptoanisole; Thioguaiacol; 4-Methoxybenzenethiol; 4-Methoxy-phenyl mercaptan
EINECS	211-799-4

Quality Control

Our 4-Methoxybenzenethiol is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing specific results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This compound is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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