Description

trans-2-Butene-1,4-Dicarboxylic Acid Diethyl Ester is a high-purity, unsaturated diester compound, serving as a versatile and reactive chemical intermediate. Its value lies in the conjugated diene and ester functionalities, which are pivotal for constructing complex molecular frameworks through reactions like Diels-Alder cycloadditions and Michael additions. This product is essential for R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries seeking to synthesize advanced active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A key building block for synthesizing complex heterocyclic compounds and active pharmaceutical ingredients (APIs) via cycloaddition reactions.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators requiring specific unsaturated ester backbones.
• Specialty Polymer & Resin Production: Acts as a monomer or cross-linking agent for creating polymers with tailored properties such as improved flexibility, adhesion, or chemical resistance.
• Fine Chemical & Dye Manufacturing: Employed in the synthesis of organic dyes, pigments, and performance chemicals where the trans-alkene structure is critical.
• Organic Synthesis & Research: A valuable dienophile in Diels-Alder reactions and a substrate for catalytic hydrogenation or functional group transformations in academic and industrial R&D.
• Flavor & Fragrance Ingredient Synthesis: Used as a precursor for creating specific ester compounds that contribute to complex aroma and flavor profiles.

Basic Information

Product Name	trans-2-Butene-1,4-Dicarboxylic Acid Diethyl Ester
CAS No.	77116-74-6
Molecular Formula	C10H16O4
Molecular Weight	200.23 g/mol
Synonyms	Diethyl trans-2-Butene-1,4-dioate; Diethyl trans-Muconate; trans-1,4-Di(carbethoxy)-2-butene; trans-2-Butenedioic Acid Diethyl Ester; (E)-2-Butenedioic Acid Diethyl Ester; (E)-Diethyl But-2-enedioate; trans-Diethyl Muconate; Muconic Acid Diethyl Ester (trans-)
EINECS	Contact for details

Quality Control

Our trans-2-Butene-1,4-Dicarboxylic Acid Diethyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including chromatography (HPLC/GC) and spectroscopy (IR, NMR), to ensure high chemical purity and consistent isomeric composition. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage, consider maintaining under an inert atmosphere to preserve purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 98.0% (Area %)
Isomeric Purity (trans-)	≥ 99.0%
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.