Description

4-Hydroxy-3-Methylthiophenol is a versatile aromatic thiol derivative characterized by its phenolic and thiol functional groups. This dual functionality makes it a valuable intermediate for synthesizing complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is essential for researchers and manufacturers developing active pharmaceutical ingredients (APIs), advanced polymers, and specialty chemicals. Our supply ensures high purity and consistent quality for demanding industrial applications.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), especially those requiring thioether or phenolic linkages.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides where the thiophenol moiety introduces specific biological activity.
• Polymer & Resin Modifier: Acts as a chain transfer agent or cross-linking agent in the production of specialty polymers and epoxy resins to enhance properties.
• Ligand & Catalyst Precursor: Serves as a precursor for metal-chelating ligands used in catalysis and material science applications.
• Fine Chemical Synthesis: Intermediate for creating dyes, pigments, and other complex organic compounds in research and development.
• Antioxidant Precursor: Utilized in the development of antioxidant compounds due to its phenolic structure.

Basic Information

Product Name	4-Hydroxy-3-Methylthiophenol
CAS No.	32281-01-9
Molecular Formula	C7H8OS
Molecular Weight	140.20 g/mol
Synonyms	3-Methyl-4-mercaptophenol; 4-Mercapto-2-methylphenol; 2-Methyl-4-hydroxybenzenethiol; 4-Hydroxy-3-methylbenzenethiol; 3-Methyl-4-thiophenol; 4-Hydroxy-m-toluenethiol; 4-Mercapto-3-methylphenol; 4-Hydroxy-3-methylphenyl mercaptan
EINECS	Contact for details

Quality Control

Our 4-Hydroxy-3-Methylthiophenol is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for pharmaceutical and fine chemical synthesis. Certificates of Analysis (COA) are provided with every shipment, detailing all relevant specifications. We adhere to cGMP principles where applicable to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its easily oxidized nature, minimize headspace and exposure to air after opening. Keep away from heat, sparks, and open flames.

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%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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