Description

Butanoic Acid, 4-Chloro-3-Oxo-, Ethenyl Ester is a specialized organic ester building block characterized by its reactive keto and chloro functional groups. This compound is valued for its role as a versatile intermediate in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily sought by research and development chemists in the pharmaceutical and agrochemical industries for the synthesis of active ingredients and novel chemical entities.

Application

• Pharmaceutical Intermediate: A key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for molecules requiring a β-keto ester backbone.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators, leveraging its reactive sites for structural diversification.
• Fine Chemical Production: Serves as a precursor for dyes, pigments, and performance chemicals where the introduction of specific chlorinated carbonyl functionalities is required.
• Polymer Chemistry: Can act as a functional monomer or cross-linking agent in the synthesis of specialty polymers with tailored properties.
• Academic & Industrial Research: Employed in methodological development and as a model compound in studies involving Claisen condensations and nucleophilic substitution reactions.

Basic Information

Product Name	Butanoic Acid, 4-Chloro-3-Oxo-, Ethenyl Ester
CAS No.	128218-60-0
Molecular Formula	C7H9ClO3
Molecular Weight	176.60 g/mol
Synonyms	4-Chloro-3-oxobutanoic Acid Vinyl Ester; Vinyl 4-Chloro-3-oxobutanoate; 4-Chloroacetoacetic Acid Vinyl Ester; 3-Oxo-4-chlorobutanoic Acid Ethenyl Ester; Butanoic acid, 4-chloro-3-oxo-, ethenyl ester; 4-Chloro-3-oxobutyric Acid Vinyl Ester; Vinyl 4-Chloroacetoacetate
EINECS	Contact for details

Quality Control

Every batch of Butanoic Acid, 4-Chloro-3-Oxo-, Ethenyl Ester is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards for fine chemical intermediates. Comprehensive analytical testing, including HPLC, GC, and NMR, is performed to verify identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Keep away from strong acids, bases, and oxidizing agents. Due to its nature as a strong acid/organic solvent derivative, ensure containers are kept tightly sealed to prevent moisture ingress and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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