Description

3-Pentenoic Acid, 2-Methyl-, Methyl Ester, (E)- is a high-purity, unsaturated ester compound with the CAS registry number 33603-30-4. This specialty chemical serves as a valuable building block and intermediate in advanced organic synthesis, prized for its defined stereochemistry and reactive alkene functionality. It is primarily utilized by R&D laboratories and production facilities in the pharmaceutical, agrochemical, and fragrance industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key chiral building block for the synthesis of active pharmaceutical ingredients (APIs) and complex organic molecules.
• Agrochemical Synthesis: Intermediate in the production of advanced pesticides, herbicides, and plant growth regulators.
• Flavor and Fragrance Ingredient: Used in the creation of specific ester notes and as a precursor for aroma chemicals.
• Organic Synthesis Reagent: Serves as a Michael acceptor or a dienophile in Diels-Alder and other cycloaddition reactions.
• Polymer Chemistry: Monomer or co-monomer for specialty polymers and functional materials.
• Chemical Research: Standard or starting material in academic and industrial research for method development and catalysis studies.

Basic Information

Item	Details
Product Name	3-Pentenoic Acid, 2-Methyl-, Methyl Ester, (E)-
CAS No.	33603-30-4
Molecular Formula	C7H12O2
Molecular Weight	128.17 g/mol
Synonyms	(E)-2-Methyl-3-pentenoic acid methyl ester; Methyl (E)-2-methyl-3-pentenoate; trans-2-Methyl-3-pentenoic acid methyl ester; 3-Pentenoic acid, 2-methyl-, methyl ester, (3E)-; Methyl 2-methyl-(E)-3-pentenoate; 2-Methyl-3-pentenoic acid methyl ester; (E)-Methyl 2-methyl-3-pentenoate
EINECS	Contact for details

Quality Control

Every batch of 3-Pentenoic Acid, 2-Methyl-, Methyl Ester, (E)- is produced and tested under a strict quality management system. We provide comprehensive Certificates of Analysis (COA) that detail purity, identity, and impurity profiles, ensuring traceability and compliance with your research or production specifications. Our rigorous quality testing includes advanced chromatographic methods to guarantee batch-to-batch consistency and reliability.

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 between 15°C and 25°C. Keep container tightly sealed when not in use to maintain purity and prevent moisture absorption.

Specification

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