Description

(E)-Methyl 3-Methyl-4-Oxobut-2-Enoate is a high-purity, versatile α,β-unsaturated ester building block essential for advanced organic synthesis. Its conjugated carbonyl system makes it a valuable electrophile for Michael additions and cyclization reactions, enabling the efficient construction of complex molecular frameworks. This compound is primarily sought after by research institutions and manufacturers in the pharmaceutical and agrochemical sectors for developing active ingredients and novel intermediates.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of heterocyclic compounds, potential drug candidates, and complex natural product analogs.
• Agrochemical Synthesis: Used in the development of novel pesticides, herbicides, and plant growth regulators due to its reactive enoate functionality.
• Fine Chemical Production: Serves as a building block for specialty chemicals, flavors, fragrances, and advanced materials.
• Academic & R&D: Employed in methodological research for developing new catalytic processes, such as asymmetric synthesis and cross-coupling reactions.
• Polymer Chemistry: Can act as a monomer or co-monomer for creating specialty polymers with specific functional properties.

Basic Information

Product Name	(E)-Methyl 3-Methyl-4-Oxobut-2-Enoate
CAS No.	40835-18-5
Molecular Formula	C6H8O3
Molecular Weight	128.13 g/mol
Synonyms	Methyl (E)-3-Methyl-4-oxo-2-butenoate; (E)-3-Methyl-4-oxo-2-butenoic Acid Methyl Ester; Methyl 3-Methyl-4-oxobut-2-enoate; trans-Methyl 3-Methyl-4-oxo-2-butenoate; 2-Butenoic acid, 3-methyl-4-oxo-, methyl ester, (2E)-; Methyl acetylaerylate; Methyl 3-methyl-4-oxo-2-butenoate
EINECS	Contact for details

Quality Control

Our (E)-Methyl 3-Methyl-4-Oxobut-2-Enoate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (HPLC/GC) and spectroscopic methods (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are available upon request, supporting your quality assurance and regulatory compliance needs.

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 heat, sparks, and open flames. For long-term storage, consider maintaining the material under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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