Description

4-Oxobutanoic Acid Ethyl Ester is a versatile keto ester building block, also known as ethyl levulinate, valued for its bifunctional reactivity. This compound serves as a critical intermediate in the synthesis of a wide range of fine chemicals and active pharmaceutical ingredients (APIs). It is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable, high-purity raw materials for complex organic synthesis.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of various heterocyclic compounds, APIs, and chiral molecules.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators.
• Flavor & Fragrance Industry: Serves as a starting material for creating fruity and caramel-like flavor notes and aroma chemicals.
• Solvent & Plasticizer: Acts as a green, biodegradable solvent and a potential precursor for bio-based plasticizers.
• Resin & Polymer Modification: Utilized in the synthesis of specialty polymers, coatings, and resins.
• Chemical Research & Development: A valuable reagent for exploring new synthetic pathways in academic and industrial R&D labs.

Basic Information

Product Name	4-Oxobutanoic Acid Ethyl Ester
CAS No.	10138-10-0
Molecular Formula	C6H10O3
Molecular Weight	130.14 g/mol
Synonyms	Ethyl Levulinate; Ethyl 4-Oxopentanoate; Ethyl 4-Oxovalerate; Levulinic Acid Ethyl Ester; 4-Oxopentanoic Acid Ethyl Ester; Ethyl γ-Ketovalerate; Ethyl Laevulinate; 4-Ketovaleric Acid Ethyl Ester
EINECS	233-391-5

Quality Control

Our 4-Oxobutanoic Acid Ethyl Ester is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the highest standards of purity and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming specifications for identity, assay, and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Refractive Index (n20D)	1.422 - 1.426
Specific Gravity (20°C)	1.010 - 1.030
Water Content (KF)	≤ 0.5%

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