Description

4-Aminothiophenol is a versatile aromatic compound containing both amine and thiol functional groups, making it a valuable bifunctional building block in organic synthesis. Its dual reactivity allows it to act as a crucial linker or precursor in the creation of complex molecules. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and materials science industries. The product is supplied as 4-Aminothiophenol CAS NO 1193-02-8, meeting high standards of purity and consistency for industrial applications.

Application

• Pharmaceutical Intermediates: Serves as a key precursor in the synthesis of various active pharmaceutical ingredients (APIs), particularly those containing sulfur and nitrogen heterocycles.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where its aromatic thiol structure is incorporated into the final molecule.
• Polymer & Material Science: Acts as a monomer or cross-linking agent in the production of specialty polymers, conductive polymers, and self-assembled monolayers (SAMs) on gold surfaces.
• Chemical Synthesis Reagent: Employed as a nucleophile in substitution reactions and as a reducing agent in specific organic transformations.
• Dye & Pigment Manufacturing: Functions as an intermediate in the synthesis of sulfur-containing dyes and organic pigments.
• Surface Modification: Utilized for functionalizing nanoparticles and other material surfaces via its thiol group, enabling further chemical attachment.
• Research & Development: A fundamental reagent in academic and industrial R&D labs for exploring new synthetic pathways and material properties.

Basic Information

Product Name	4-Aminothiophenol
CAS No.	1193-02-8
Molecular Formula	C6H7NS
Molecular Weight	125.19 g/mol
Synonyms	4-Aminobenzenethiol; p-Aminothiophenol; 4-Mercaptoaniline; p-Mercaptoaniline; 4-Thioaniline; 4-Aminophenyl mercaptan; Benzenethiol, 4-amino-; USAF EK-9065
EINECS	214-777-3

Quality Control

Our 4-Aminothiophenol is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment. We adhere to cGMP principles where applicable to support our customers in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	42 - 46 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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