Description

(Z)-2-Butenoic Acid Ethyl Ester CAS NO 6776-19-8 is a high-purity, unsaturated ester derivative of butenoic acid, valued for its role as a versatile chemical intermediate and flavor/fragrance component. Its defined stereochemistry and high volatility make it a critical building block for synthesizing fine chemicals and active pharmaceutical ingredients (APIs). This product is essential for manufacturers in the flavor & fragrance, pharmaceutical, and agrochemical industries seeking reliable, high-quality intermediates for complex synthesis.

Application

• Flavor and Fragrance (F&F) Industry: Used as a key intermediate or aroma component in the synthesis of fruity esters and complex fragrance molecules.
• Pharmaceutical Intermediates: Serves as a chiral building block in the synthesis of specific APIs and other bioactive molecules.
• Agrochemical Synthesis: Employed in the production of certain pesticides and herbicides where its unsaturated structure is utilized.
• Organic Synthesis: Acts as a Michael acceptor or a dienophile in various organic reactions, including Diels-Alder cycloadditions.
• Polymer Modification: Can be used as a co-monomer or cross-linking agent in specialty polymer formulations.
• Research & Development: A valuable reagent for chemical research in academic and industrial laboratories.

Basic Information

Product Name	(Z)-2-Butenoic Acid Ethyl Ester
CAS No.	6776-19-8
Molecular Formula	C6H10O2
Molecular Weight	114.14 g/mol
Synonyms	Ethyl (Z)-2-Butenoate; Ethyl (Z)-Crotonate; (Z)-Crotonic Acid Ethyl Ester; cis-2-Butenoic Acid Ethyl Ester; cis-Crotonic Acid Ethyl Ester; Ethyl cis-Crotonate; 2-Butenoic acid, ethyl ester, (2Z)-; Ethyl 2-butenoate (cis)
EINECS	229-826-0

Quality Control

Our (Z)-2-Butenoic Acid Ethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC and chiral analysis, to ensure high chemical and isomeric purity. Certificates of Analysis (COA) detailing identity, purity, and impurity profiles are provided with every shipment to guarantee consistent quality and traceability for your critical applications.

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: 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Isomeric Purity (Z-isomer)	≥ 99.0%
Water Content (KF)	≤ 0.1%
Refractive Index (20°C)	1.423 - 1.427
Specific Gravity (20°C)	0.915 - 0.925

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