Description

3-Penten-2-One, 1,1-Dichloro- is a specialized halogenated ketone building block with significant synthetic utility. Its unique structure, featuring both a reactive carbonyl group and geminal dichloro substitution, makes it a valuable intermediate for constructing complex molecules in fine chemical and pharmaceutical synthesis. This compound is primarily sought by R&D chemists and process development scientists in the agrochemical, pharmaceutical, and advanced material sectors for applications requiring precise molecular modifications.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing dichloroalkyl ketone motifs.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where its reactive sites allow for the creation of potent bioactive molecules.
• Organic Synthesis Building Block: Employed in Michael additions, nucleophilic substitutions, and cyclization reactions to create complex heterocycles and alicyclic compounds.
• Polymer & Material Science: Acts as a monomer or cross-linking agent in the development of specialty polymers with specific thermal or chemical resistance properties.
• Chemical Research & Development: Utilized in academic and industrial labs for methodological studies and the development of novel synthetic pathways.
• Flavor & Fragrance Intermediate: Can be used in the controlled synthesis of specific aroma chemicals, leveraging its ketone functionality.

Basic Information

Product Name	3-Penten-2-One, 1,1-Dichloro-
CAS No.	52945-75-2
Molecular Formula	C5H6Cl2O
Molecular Weight	153.01 g/mol
Synonyms	1,1-Dichloro-3-penten-2-one; 1,1-Dichloropent-3-en-2-one; 3-Penten-2-one, 1,1-dichloro-; Pent-3-en-2-one, 1,1-dichloro-; NSC 163063; 1,1-Dichloro-3-penten-2-on; Dichloromethyl vinyl ketone (related structure)
EINECS	Contact for details

Quality Control

Our 3-Penten-2-One, 1,1-Dichloro- is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (NMR, IR), to ensure high purity and consistent performance. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. Containers should be kept tightly sealed to prevent moisture absorption and volatilization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.25 g/cm³
Refractive Index (n20D)	~1.48

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