Description

Benzeneethanesulfenyl Chloride, α-Chloro-β-Oxo- (9Ci) is a specialized organosulfur and organochlorine compound that serves as a versatile synthetic intermediate. Its unique bifunctional structure, featuring both a sulfenyl chloride and an α-chloro-β-oxo moiety, makes it a valuable reagent for constructing complex molecular architectures, particularly in pharmaceutical and agrochemical research. This high-purity building block is essential for chemists engaged in the development of novel active ingredients, advanced materials, and fine chemicals, where precise control over sulfur and chlorine incorporation is required.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of novel drug candidates, particularly those containing thioether, sulfoxide, or heterocyclic structures.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and fungicides where its reactive groups enable specific modes of action.
• Material Science Research: Employed in the development of specialty polymers, ligands, and functional materials that require sulfur-based linkages.
• Organic Synthesis Reagent: Acts as an electrophilic sulfur transfer agent and a chlorinating agent in complex multi-step synthetic routes.
• Chemical Biology Probes: Useful for the selective modification of proteins, peptides, and other biomolecules in research applications.
• Fine Chemical Production: Serves as a precursor for dyes, pigments, and other high-value specialty chemicals.

Basic Information

Product Name	Benzeneethanesulfenyl Chloride, α-Chloro-β-Oxo- (9Ci)
CAS No.	58861-72-6
Molecular Formula	C8H7Cl2OS
Molecular Weight	222.11 g/mol
Synonyms	2-Chloro-2-oxo-1-phenylethanesulfenyl chloride; α-Chloro-β-oxobenzeneeethanesulfenyl chloride; Phenacylsulfenyl chloride, α-chloro-; 1-Chloro-1-oxo-2-phenylethanesulfenyl chloride; (Chlorooxoacetyl)benzene sulfenyl chloride; Benzeneethanesulfenyl chloride, α-chloro-β-oxo-; 58861-72-6 (CAS)
EINECS	Contact for details

Quality Control

Our Benzeneethanesulfenyl Chloride, α-Chloro-β-Oxo- (9Ci) is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC, NMR, and IR spectroscopy, to verify identity and potency. A detailed Certificate of Analysis (COA) documenting purity, assay, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and moisture-sensitive nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to amber liquid / solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (GC)	≥ 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.