Description

4-Oxo-2-Pentynoic Acid Ethyl Ester is a versatile and reactive alkyne-containing building block, primarily valued for its role as a key intermediate in advanced organic synthesis. Its unique molecular structure, featuring both a carbonyl and an alkyne functional group, makes it an essential precursor for constructing complex heterocycles and pharmaceutical scaffolds. This compound is particularly critical for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of complex drug candidates, particularly those containing heterocyclic cores like pyrroles and pyrazoles.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced organic materials.
• Academic & Industrial R&D: A valuable reagent for methodology development in organic chemistry, including cycloaddition and coupling reactions.
• Fine Chemical Production: Employed in the multi-step synthesis of flavors, fragrances, and other high-value specialty chemicals.

Basic Information

Item	Details
Product Name	4-Oxo-2-Pentynoic Acid Ethyl Ester
CAS No.	54966-49-3
Molecular Formula	C7H8O3
Molecular Weight	140.14 g/mol
Synonyms	Ethyl 4-oxopent-2-ynoate; Ethyl 2-butynoylacetate; 2-Butynoylacetic acid ethyl ester; Acetylpropiolic acid ethyl ester; Ethyl acetylpropiolate; 4-Oxo-2-pentynoic acid ethyl ester; Pent-2-ynoic acid, 4-oxo-, ethyl ester
EINECS	Contact for details

Quality Control

Every batch of 4-Oxo-2-Pentynoic Acid Ethyl Ester is produced and tested under a strict quality management system. We employ advanced analytical techniques including GC, HPLC, and NMR to ensure identity, purity, and consistency meet the exacting standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and support your quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. The product is sensitive to strong alkali and should be kept away from incompatible materials. Recommended storage temperature is 2-8°C for long-term stability.

Specification

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