Description

4-Ethoxybenzenethiol is a versatile aromatic thiol compound, also known as 4-ethoxythiophenol, with the CAS number 699-09-2. This specialty chemical serves as a critical building block and intermediate in advanced organic synthesis, valued for its unique reactivity as a nucleophile and its ability to introduce sulfur-containing functional groups. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries who require high-purity intermediates for developing active ingredients, ligands, and functional polymers.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those containing aryl thioether or sulfone moieties.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides where the ethoxyphenylthio group confers specific biological activity.
• Ligand & Catalyst Preparation: Acts as a precursor for creating specialized ligands in transition metal catalysis and organocatalysis.
• Polymer & Material Science: Employed as a monomer or chain-transfer agent in the synthesis of specialty polymers and functional materials.
• Organic Synthesis Reagent: Utilized in nucleophilic aromatic substitution reactions and as a protecting group for other functional groups.
• Flavor & Fragrance Intermediate: Serves as a starting material for synthesizing certain sulfur-containing aroma chemicals.

Basic Information

Product Name	4-Ethoxybenzenethiol
CAS No.	699-09-2
Molecular Formula	C8H10OS
Molecular Weight	154.23 g/mol
Synonyms	4-Ethoxythiophenol; p-Ethoxythiophenol; 4-Ethoxybenzenethiol; 1-Ethoxy-4-mercaptobenzene; p-Ethoxyphenyl mercaptan; 4-Ethoxybenzenethiol; Thiophenol, p-ethoxy-; 699-09-2
EINECS	211-832-7

Quality Control

Our 4-Ethoxybenzenethiol is produced under strict quality management systems. Each batch undergoes comprehensive analytical testing, including GC/HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles 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). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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