Description

Methyl (4E)-5-Methoxy-4-Pentenoate is a high-purity, unsaturated ester compound with a defined stereochemistry, serving as a valuable synthetic intermediate in advanced organic synthesis. Its unique structure, featuring both a methoxy and an ester functional group on a conjugated system, makes it a versatile building block for constructing complex molecules. This product is essential for research and development chemists in the pharmaceutical, agrochemical, and specialty chemical industries seeking to introduce specific molecular motifs into their target compounds.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring conjugated ester backbones.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Flavor & Fragrance Chemistry: Serves as a building block for creating unsaturated ester compounds that contribute to specific olfactory notes.
• Material Science Research: Employed in the development of specialty polymers and functional materials where its reactive double bond and ester group can be utilized.
• Organic Synthesis Reagent: Acts as a Michael acceptor or a dienophile in various cycloaddition and conjugate addition reactions for academic and industrial research.
• Fine Chemical Production: Integral to the multi-step synthesis of complex fine chemicals and other advanced intermediates.

Basic Information

Product Name	Methyl (4E)-5-Methoxy-4-Pentenoate
CAS No.	143538-29-8
Molecular Formula	C7H12O3
Molecular Weight	144.17 g/mol
Synonyms	(4E)-5-Methoxy-4-pentenoic acid methyl ester; Methyl (E)-5-methoxypent-4-enoate; (E)-Methyl 5-methoxy-4-pentenoate; 4-Pentenoic acid, 5-methoxy-, methyl ester, (4E)-; Methyl trans-5-methoxy-4-pentenoate; 5-Methoxy-4-pentenoic acid methyl ester (E)-; Methyl 5-methoxy-4-pentenoate (E isomer)
EINECS	Contact for details

Quality Control

Our Methyl (4E)-5-Methoxy-4-Pentenoate is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopy (NMR, IR), to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment. We adhere to cGMP principles where applicable to support our clients in regulated industries.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC/GC)	≥ 97.0% (Area %)
Isomeric Purity (E/Z Ratio)	≥ 98:2 (E:Z)
Water Content (KF)	≤ 0.5%

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