Description

4-Mercaptophenol is a versatile aromatic thiol compound, also known as 4-Hydroxybenzenethiol, with the CAS registry number 637-89-8. This bifunctional molecule is a critical building block in organic synthesis, valued for its ability to act as both a nucleophile and a ligand. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries seeking to introduce thiol or phenolic functionalities into complex molecules.

Application

• Pharmaceutical Intermediates: A key precursor in synthesizing active pharmaceutical ingredients (APIs), particularly for drugs targeting neurological and cardiovascular systems.
• Ligand Synthesis: Used to create chelating agents and ligands for catalysis in metal-organic chemistry and homogeneous catalysis.
• Polymer Modification: Serves as a chain transfer agent or functional monomer to introduce thiol groups into polymers, enhancing properties like adhesion and cross-linking.
• Agrochemical Synthesis: Employed in the production of certain herbicides, fungicides, and plant growth regulators.
• Gold Nanoparticle Functionalization: Acts as a stabilizing agent and surface modifier for gold nanoparticles in diagnostic and sensor applications.
• Chemical Research: A valuable reagent in organic synthesis for constructing heterocycles and complex molecular architectures.

Basic Information

Product Name	4-Mercaptophenol
CAS No.	637-89-8
Molecular Formula	C6H6OS
Molecular Weight	126.18 g/mol
Synonyms	4-Hydroxybenzenethiol; p-Mercaptophenol; p-Hydroxythiophenol; 4-Hydroxythiophenol; 4-Hydroxy-1-thiophenol; 1-Hydroxy-4-mercaptobenzene; Thiopyrocatechol; USHA 4
EINECS	211-300-5

Quality Control

Our 4-Mercaptophenol is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity 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.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C) under an inert atmosphere (e.g., nitrogen) to prevent oxidation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	28 - 32 °C
Loss on Drying	≤ 0.5%

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