Description

1-Chloro-3,4-Pentadien-2-One is a specialized, high-purity organic building block characterized by its reactive chloro and ketone functional groups on a conjugated diene system. This unique molecular structure makes it a valuable intermediate for synthesizing complex molecules in advanced research and fine chemical production. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and materials science industries for constructing novel heterocycles and functionalized scaffolds.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for constructing complex molecular architectures.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its reactive sites allow for the introduction of specific functional groups.
• Organic Synthesis Research: A versatile building block in academic and industrial laboratories for Diels-Alder reactions, nucleophilic substitutions, and other cycloaddition chemistry.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, including dyes, flavors, and fragrances, requiring specific chlorinated ketone precursors.
• Material Science: Investigated as a monomer or cross-linking agent in the development of novel polymers with specialized properties.

Basic Information

Product Name	1-Chloro-3,4-Pentadien-2-One
CAS No.	20207-56-1
Molecular Formula	C5H5ClO
Molecular Weight	116.54 g/mol
Synonyms	1-Chloro-3,4-pentadien-2-one; 3,4-Pentadien-2-one, 1-chloro-; 1-Chloropenta-3,4-dien-2-one; Chloropentadienone; Allenyl chloromethyl ketone; 1-Chloro-3,4-pentadiene-2-one
EINECS	Contact for details

Quality Control

Our 1-Chloro-3,4-Pentadien-2-One is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay (by GC/HPLC), identity confirmation (by IR/NMR), and impurity profiles. Our quality commitment ensures the material meets the exacting standards required for research and scale-up applications.

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 heat, sparks, and open flame. Due to its light-sensitive nature, containers should be kept in opaque packaging or amber glass.

Specification

Item	Specification
Appearance	Clear to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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