Description

3,4-Dichlorothiophenol CAS NO 5858-17-3 is a versatile organosulfur compound featuring a thiol group and two chlorine substituents on the aromatic ring. This structure makes it a valuable building block and intermediate in the synthesis of more complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is primarily sought by R&D chemists and process development teams for constructing heterocyclic compounds, ligands, and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, especially those containing sulfur heterocycles.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and fungicides where the dichlorophenyl moiety imparts biological activity.
• Ligand Precursor: Serves as a starting material for the preparation of specialized ligands used in catalysis and material science.
• Polymer Modification: Acts as a chain transfer agent or functional monomer in the synthesis of specialty polymers and resins.
• Organic Synthesis Reagent: Employed in various name reactions for introducing the thiophenol group into target molecules.
• Research & Development: Essential compound for academic and industrial research in medicinal and synthetic chemistry.

Basic Information

Product Name	3,4-Dichlorothiophenol
CAS No.	5858-17-3
Molecular Formula	C6H4Cl2S
Molecular Weight	179.07 g/mol
Synonyms	3,4-Dichlorobenzenethiol; 3,4-Dichlorophenyl mercaptan; 1,2-Dichloro-4-mercaptobenzene; 4-Mercapto-1,2-dichlorobenzene; (3,4-Dichlorophenyl)thiol; Benzenethiol, 3,4-dichloro-; 5858-17-3; 3,4-DCTP
EINECS	227-476-1

Quality Control

Our 3,4-Dichlorothiophenol is manufactured under strict quality management systems. 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 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 room temperature (15-25°C). This product is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from strong oxidizing agents, strong bases, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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