Description

(E)-3-Methoxy-2-Butenoic Acid Methyl Ester is a high-purity chemical intermediate characterized by its α,β-unsaturated ester structure with a methoxy substituent. This compound is valued for its role as a versatile building block in organic synthesis, enabling the construction of complex molecular frameworks. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and fine chemical industries for applications in heterocyclic chemistry and the synthesis of active ingredients.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), particularly those containing heterocyclic structures.
• Agrochemical Synthesis: Used in the research and production of advanced pesticides, herbicides, and fungicides.
• Fine Chemical Production: Serves as a precursor for flavors, fragrances, and other specialty chemicals requiring specific stereochemistry.
• Academic & Industrial R&D: Employed in methodological development and as a model compound in studies of conjugate addition reactions and cyclization processes.
• Material Science: Potential monomer or cross-linking agent in the development of specialized polymers.

Basic Information

Product Name	(E)-3-Methoxy-2-Butenoic Acid Methyl Ester
CAS No.	4525-28-4
Molecular Formula	C7H12O3
Molecular Weight	144.17 g/mol
Synonyms	Methyl (E)-3-methoxy-2-butenoate; Methyl 3-methoxycrotonate; (E)-Methyl 3-methoxybut-2-enoate; 3-Methoxy-2-butenoic acid methyl ester; trans-3-Methoxy-2-butenoic acid methyl ester; 3-Methoxycrotonic acid methyl ester; Methyl trans-3-methoxycrotonate
EINECS	Contact for details

Quality Control

Our (E)-3-Methoxy-2-Butenoic Acid Methyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency for your critical processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; ensure containers are kept tightly sealed to prevent degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Specific Gravity (20°C)	1.040 - 1.080
Refractive Index (20°C)	1.430 - 1.450

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