Description

p-Toluenethiosulfonic Acid S-p-Tolyl Ester is a specialized organosulfur compound that serves as a versatile intermediate in advanced organic synthesis. Its unique chemical structure makes it a valuable reagent for constructing sulfur-containing molecules and facilitating specific coupling reactions. This product is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and material science sectors who require high-purity building blocks for complex synthesis.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing thioether or sulfone functional groups.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the sulfonate ester moiety is integral to biological activity.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polymers with specific thermal or chemical resistance properties.
• Ligand and Catalyst Preparation: Serves as a precursor for synthesizing sulfur-based ligands used in transition metal catalysis.
• Organic Synthesis Reagent: Employed in nucleophilic substitution reactions and as a sulfenylating or sulfonylating agent in complex molecule construction.
• Material Science Research: Investigated for use in creating novel organic electronic materials or self-assembled monolayers (SAMs).

Basic Information

Product Name	p-Toluenethiosulfonic Acid S-p-Tolyl Ester
CAS No.	2943-42-2
Molecular Formula	C14H14O2S2
Molecular Weight	278.39 g/mol
Synonyms	S-(4-Methylphenyl) 4-methylbenzenethiosulfonate; p-Tolyl p-toluenethiosulfonate; 4-Methylbenzenethiosulfonic Acid S-(4-Methylphenyl) Ester; 4,4'-Dimethyldiphenyl Disulfone (obsolete); Bis(4-methylphenyl) Disulfone; Thiosulfuric Acid S-(4-Methylphenyl) Ester O-(4-Methylphenyl) Ester; p-Toluenesulfenyl p-Toluenesulfonate
EINECS	220-943-5

Quality Control

Our p-Toluenethiosulfonic Acid S-p-Tolyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for synthetic intermediates. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). Due to its light-sensitive nature and tendency to be easily oxidized, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, open flames, and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	108 - 112 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%

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