Description

4-Methoxy-3-Buten-2-One is a versatile, highly volatile chemical intermediate featuring a reactive α,β-unsaturated ketone structure with a methoxy substituent. This unique molecular architecture makes it a valuable building block for synthesizing more complex molecules, particularly in fine chemical and pharmaceutical research. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries for applications requiring precise molecular construction.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially those containing heterocyclic or complex carbonyl frameworks.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators where its reactive enone system is utilized.
• Flavor & Fragrance Ingredient: Serves as a starting material for creating specific aroma chemicals and flavor compounds due to its carbonyl functionality.
• Organic Synthesis Building Block: Employed in Michael addition reactions, cyclizations, and other carbon-carbon bond forming reactions in research and development laboratories.
• Polymer & Material Science: Acts as a monomer or cross-linking agent in the development of specialty polymers and functional materials.
• Chemical Research: Utilized in academic and industrial research for methodological studies and the development of novel synthetic pathways.

Basic Information

Product Name	4-Methoxy-3-Buten-2-One
CAS No.	4652-27-1
Molecular Formula	C5H8O2
Molecular Weight	100.12 g/mol
Synonyms	3-Buten-2-one, 4-methoxy-; 4-Methoxybut-3-en-2-one; 1-Methoxy-1-buten-3-one; 3-Methoxy-3-buten-2-one; Methyl 1-propenyl ketone, 4-methoxy-; Methoxybutenone; 4-Methoxy-3-butenone
EINECS	225-085-8

Quality Control

Our 4-Methoxy-3-Buten-2-One is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and spectroscopic methods (IR, NMR), to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications. We support cGMP and ISO 9001 standards for manufacturing critical intermediates.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.440 - 1.450
Density (20°C)	0.98 - 1.02 g/mL

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