Description

trans-2-Methyl-2-pentenoic acid is a high-purity, unsaturated carboxylic acid characterized by its specific geometric isomerism. This compound serves as a valuable versatile chiral building block and intermediate in advanced organic synthesis. It is primarily utilized by pharmaceutical, agrochemical, and specialty chemical manufacturers for the development of active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Key chiral precursor in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs.
• Agrochemical Synthesis: Building block for creating herbicides, fungicides, and plant growth regulators with specific stereochemistry.
• Flavor & Fragrance Ingredient: Used in the production of esters and lactones that contribute to complex flavor and aroma profiles.
• Polymer Chemistry: Monomer or co-monomer for specialty polymers, including resins and coatings requiring specific acid functionality.
• Organic Synthesis Reagent: Employed in Michael additions, Diels-Alder reactions, and other carbon-carbon bond-forming processes.
• Liquid Crystal & Electronic Materials: Intermediate in the synthesis of advanced materials for display and semiconductor applications.

Basic Information

Product Name	trans-2-Methyl-2-pentenoic Acid
CAS No.	16957-70-3
Molecular Formula	C6H10O2
Molecular Weight	114.14 g/mol
Synonyms	(E)-2-Methyl-2-pentenoic Acid; trans-β-Methyl-β-ethylacrylic Acid; (E)-2-Methylpent-2-enoic Acid; 2-Methyl-2-pentenoic Acid, (E)-; 2-Pentenoic Acid, 2-methyl-, (E)-; β-Methyl-β-ethylacrylic Acid; 3-Ethylcrotonic Acid
EINECS	241-025-8

Quality Control

Our trans-2-Methyl-2-pentenoic acid is produced under strict quality management systems. Every batch undergoes rigorous analytical testing, including assay, isomer purity, and impurity profiling, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and specific test results is provided with each shipment.

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 bases and oxidizing agents. Recommended storage temperature is 2-8°C for long-term stability. This product is a strong acid/organic solvent; handle with appropriate personal protective equipment.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
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.