Description

3,4-Dichloro-3-Buten-2-One is a versatile and reactive chlorinated enone building block, essential for advanced organic synthesis. Its value lies in its bifunctional structure, featuring both a reactive carbonyl and an alkene with electron-withdrawing chlorine substituents, making it a key intermediate for constructing complex molecular architectures. This compound is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for applications such as the synthesis of heterocycles and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: A critical building block for the synthesis of novel heterocyclic compounds and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and pesticides, leveraging its reactive sites for structural diversification.
• Organic Synthesis Reagent: Serves as a versatile Michael acceptor and electrophile in complex organic transformations, including cyclization and cross-coupling reactions.
• Material Science Research: Employed in the development of specialty polymers and functional materials that require chlorinated monomer units.
• Chemical Research & Development: A valuable tool for medicinal chemistry and process chemistry in exploring new synthetic pathways.

Basic Information

Product Name	3,4-Dichloro-3-Buten-2-One
CAS No.	91157-97-0
Molecular Formula	C4H4Cl2O
Molecular Weight	138.98 g/mol
Synonyms	3,4-Dichlorobut-3-en-2-one; 1,2-Dichloro-1-buten-3-one; 3-Buten-2-one, 3,4-dichloro-; Dichlorovinyl methyl ketone; 3,4-Dichlorobutenone; Methyl dichlorovinyl ketone
EINECS	Contact for details

Quality Control

Our 3,4-Dichloro-3-Buten-2-One is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to verify identity and assay. Certificates of Analysis (COA) detailing all specifications are 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 place at a controlled room temperature (15-25°C). Keep away from strong acids and incompatible organic solvents. Due to its light-sensitive nature, containers should be amber glass or opaque.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (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.