Description

4-Chlorothiobenzoic Acid S-Ethyl Ester is a specialized organosulfur compound that serves as a versatile synthetic intermediate in advanced chemical synthesis. Its value lies in its unique molecular architecture, featuring both a reactive thioester group and a chloro-substituted aromatic ring, enabling precise modifications for creating complex target molecules. This high-purity building block is essential for researchers and manufacturers in the pharmaceutical and agrochemical sectors developing novel active ingredients.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of novel drug candidates, particularly those requiring a chlorinated benzoyl thioester moiety for further functionalization.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides and herbicides, where its structure contributes to the activity profile of the final product.
• Ligand and Catalyst Development: Serves as a starting material for creating specialized ligands in transition metal catalysis and organocatalysis.
• Material Science Research: Employed in the development of functional polymers and advanced organic materials with specific electronic or structural properties.
• Custom Chemical Synthesis: A valuable building block for contract research organizations (CROs) and fine chemical companies performing bespoke synthesis for clients.

Basic Information

Product Name	4-Chlorothiobenzoic Acid S-Ethyl Ester
CAS No.	28145-62-2
Molecular Formula	C9H9ClOS
Molecular Weight	200.68 g/mol
Synonyms	S-Ethyl 4-chlorobenzenecarbothioate; 4-Chlorobenzenecarbothioic acid S-ethyl ester; Ethyl 4-chlorothiobenzoate; p-Chlorothiobenzoic Acid Ethyl Ester; Benzenecarbothioic acid, 4-chloro-, S-ethyl ester; 4-Chlorothiobenzoic acid ethyl ester; Thiobenzoic acid, 4-chloro-, S-ethyl ester
EINECS	Contact for details

Quality Control

Every batch of 4-Chlorothiobenzoic Acid S-Ethyl Ester is manufactured under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, GC, and NMR, to ensure high purity and consistency that meets the demanding requirements of research and process development. A comprehensive Certificate of Analysis (COA) detailing identity, purity, 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, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and incompatible materials such as strong oxidizing agents and bases. Due to its light-sensitive nature, containers should be kept in opaque packaging or amber glass.

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%
Heavy Metals	≤ 10 ppm

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