Description

Ethyl 3-Ethoxybut-2-Enoate is a versatile ester compound with the CAS registry number 998-91-4. It serves as a valuable building block and intermediate in advanced organic synthesis, prized for its reactive enoate functionality. This chemical is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors seeking to develop complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring functionalized butenoate frameworks.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Fine Chemical Production: Serves as a versatile reagent for constructing complex esters, lactones, and other heterocyclic compounds in R&D and scale-up.
• Flavor and Fragrance Industry: Potential intermediate for creating specific ester notes, though final product compliance must be verified.
• Polymer Chemistry: Can act as a monomer or co-monomer in specialty polymer formulations, contributing specific functional groups.
• Organic Synthesis Research: A valuable tool for academic and industrial chemists exploring Michael additions, cyclization reactions, and other transformations.

Basic Information

Product Name	Ethyl 3-Ethoxybut-2-Enoate
CAS No.	998-91-4
Molecular Formula	C8H14O3
Molecular Weight	158.20 g/mol
Synonyms	Ethyl 3-Ethoxybut-2-Enoate; Ethyl 3-Ethoxy-2-butenoate; 3-Ethoxybut-2-enoic Acid Ethyl Ester; 2-Butenoic Acid, 3-Ethoxy-, Ethyl Ester; Ethyl β-Ethoxycrotonate; NSC 403108; Acetoacetic Acid Ethyl Ester Ethyl Ether (related); Contact for additional trade names.
EINECS	213-646-4

Quality Control

Our Ethyl 3-Ethoxybut-2-Enoate is produced under stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the exacting standards required for synthetic intermediates. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.425 - 1.435
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.