Description

4-Hexenoic Acid, 5-Methyl-, Ethyl Ester is a specialized unsaturated ester with a unique molecular structure that makes it a valuable intermediate in fine chemical synthesis. This compound matters for its role in constructing complex molecules, particularly in the development of flavors, fragrances, and active pharmaceutical ingredients (APIs). It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce specific chiral centers or olefinic functionalities into their target compounds.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Flavor & Fragrance (F&F) Industry: Serves as a precursor for creating specific fruity or green aroma compounds.
• Organic Synthesis & Research: A versatile reagent for Diels-Alder reactions, hydrogenation studies, and other carbon-carbon bond-forming processes in academic and industrial R&D.
• Polymer Modification: Can be used as a co-monomer or cross-linking agent to introduce specific functional groups into polymer chains.
• Liquid Crystal & Electronic Materials: Investigated as a synthetic intermediate for advanced organic electronic materials.

Basic Information

Product Name	4-Hexenoic Acid, 5-Methyl-, Ethyl Ester
CAS No.	42272-93-5
Molecular Formula	C9H16O2
Molecular Weight	156.22 g/mol
Synonyms	Ethyl 5-Methyl-4-hexenoate; 5-Methyl-4-hexenoic Acid Ethyl Ester; Ethyl 5-Methylhex-4-enoate; 4-Hexenoic acid, 5-methyl-, ethyl ester; 5-Methyl-4-hexenoic acid ethyl ester; Ethyl (E/Z)-5-methylhex-4-enoate
EINECS	Contact for details

Quality Control

Our 4-Hexenoic Acid, 5-Methyl-, Ethyl Ester is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including chromatography (GC/HPLC) and spectroscopy (IR, NMR), to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical specifications. Our quality commitment aligns with cGMP principles where applicable, ensuring reliability for your most demanding synthetic applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to maintain purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Isomeric Purity (GC)	≥ 95.0% (E/Z ratio as specified)
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.