Description

Ethyl 3-Methyl-4-Oxo-2-Butenoate is a versatile keto-ester building block with a reactive α,β-unsaturated carbonyl system. This compound is valued for its role as a key intermediate in the synthesis of heterocyclic compounds and complex organic molecules. It is primarily sought by research and development chemists and process engineers in the pharmaceutical, agrochemical, and fine chemical industries.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for heterocyclic scaffolds like pyrazoles and pyridines.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, leveraging its reactive site for constructing complex molecular architectures.
• Fine Chemical Manufacturing: Serves as a building block for dyes, fragrances, and other specialty chemicals requiring specific keto-ester functionalities.
• Academic & Industrial Research: Employed in method development and as a model compound in organic synthesis studies, including cyclization and condensation reactions.
• Material Science Precursor: Potential use in the synthesis of organic ligands for catalysts or monomers for specialized polymers.

Basic Information

Product Name	Ethyl 3-Methyl-4-Oxo-2-Butenoate
CAS No.	41891-38-7
Molecular Formula	C7H10O3
Molecular Weight	142.15 g/mol
Synonyms	Ethyl 3-Methyl-4-oxopent-2-enoate; 4-Oxo-3-methyl-2-pentenoic Acid Ethyl Ester; 3-Methyl-4-oxo-2-pentenoic Acid Ethyl Ester; Ethyl 3-Methyl-4-oxo-2-pentenoate; 2-Butenoic acid, 3-methyl-4-oxo-, ethyl ester; Ethyl 3-methyl-4-oxopent-2-enoate
EINECS	Contact for details

Quality Control

Our Ethyl 3-Methyl-4-Oxo-2-Butenoate is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) documenting purity, physical properties, and identity are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong bases and oxidizing agents. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.450 - 1.460
Density (g/mL, 20°C)	1.05 - 1.10

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