Description

(E)-Methyl-4-(3-Bromophenyl)-2-Oxobut-3-Enoate CAS NO 104094-31-7 is a high-purity, synthetic organic intermediate characterized by its α,β-unsaturated ester functionality and brominated aromatic ring. This compound is of significant commercial importance as a versatile building block for the synthesis of more complex molecules, particularly in pharmaceutical research and fine chemical manufacturing. It is primarily sought after by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and advanced material sectors for constructing novel molecular scaffolds.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially those targeting central nervous system (CNS) disorders or possessing anti-inflammatory properties.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators, leveraging its reactive olefin and halogen for further functionalization.
• Material Science Research: Serves as a monomer or cross-linking agent in the development of specialty polymers and advanced organic electronic materials.
• Chemical Biology & Proteomics: Employed as a scaffold for designing molecular probes, enzyme inhibitors, and tagged compounds for biological studies.
• Academic & Contract Research: Essential for methodological development in organic synthesis, including cross-coupling reactions and cycloadditions.
• Fine Chemical Production: Utilized in the multi-step synthesis of complex fragrances, dyes, and other high-value specialty chemicals.

Basic Information

Product Name	(E)-Methyl-4-(3-Bromophenyl)-2-Oxobut-3-Enoate
CAS No.	104094-31-7
Molecular Formula	C11H9BrO3
Molecular Weight	269.09 g/mol
Synonyms	Methyl (2E)-4-(3-bromophenyl)-2-oxobut-3-enoate; (E)-Methyl 4-(3-bromophenyl)-2-oxo-3-butenoate; 3-Butenoic acid, 4-(3-bromophenyl)-2-oxo-, methyl ester, (E)-; Methyl 4-(3-bromophenyl)-2-oxobut-3-enoate; 2-Oxobut-3-enoic acid, 4-(3-bromophenyl)-, methyl ester, (E)-; 104094-31-7; (E)-Methyl 4-(3-bromophenyl)-2-oxobut-3-enoate
EINECS	Contact for details

Quality Control

Our (E)-Methyl-4-(3-Bromophenyl)-2-Oxobut-3-Enoate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment ensures the material is suitable for demanding applications in research and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%
Residual Solvents (GC)	Complies with ICH guidelines

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