Description

(E)-tert-Butyl 4-Acetoxybut-2-Enoate is a high-purity, specialty ester building block used in advanced organic synthesis. This compound is valued for its role as a protected intermediate, enabling the controlled introduction of functional groups in complex molecular architectures. It is primarily sought by R&D chemists and process development teams in the pharmaceutical, agrochemical, and fine chemical industries for the synthesis of active ingredients and novel materials.

Application

• Pharmaceutical Intermediate: A key protected synthon in the multi-step synthesis of active pharmaceutical ingredients (APIs), particularly those requiring stereoselective construction.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators where specific ester functionality is required.
• Fine Chemical Production: Serves as a versatile building block for creating complex esters, lactones, and other oxygenated compounds in custom synthesis projects.
• Polymer Chemistry: Can be utilized as a monomer or co-monomer precursor in the development of specialty polymers with tailored properties.
• Academic & Industrial R&D: Employed in research laboratories for methodological development and exploring new chemical reactions, such as cross-coupling or cycloaddition processes.
• Flavor & Fragrance Intermediate: Acts as a precursor in the synthesis of certain aroma chemicals and flavoring agents.

Basic Information

Product Name	(E)-tert-Butyl 4-Acetoxybut-2-Enoate
CAS No.	902154-51-2
Molecular Formula	C10H16O4
Molecular Weight	200.23 g/mol
Synonyms	tert-Butyl (2E)-4-acetoxy-2-butenoate; (E)-4-(Acetyloxy)-2-butenoic acid tert-butyl ester; 2-Butenoic acid, 4-(acetyloxy)-, 1,1-dimethylethyl ester, (2E)-; tert-Butyl 4-acetoxybut-2-enoate; (E)-tert-Butyl 4-acetoxy-2-butenoate; 4-Acetoxy-2-butenoic acid tert-butyl ester; (E)-4-Acetoxybut-2-enoic acid tert-butyl ester
EINECS	Contact for details

Quality Control

Our (E)-tert-Butyl 4-Acetoxybut-2-Enoate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, GC, and NMR, to ensure high chemical purity and isomeric integrity. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
Isomeric Purity (GC/HPLC)	≥ 98.0% (E-isomer)
Water Content (KF)	≤ 0.5%

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