Description

4-(4-Bromophenylethynyl) Benzoic Acid Ethyl Ester is a high-purity organic building block featuring a brominated phenylethynyl moiety attached to a benzoic acid ethyl ester core. This compound matters as a versatile and critical intermediate for synthesizing advanced materials and complex pharmaceutical molecules, enabling precise molecular architecture. It is primarily needed by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and materials science industries for constructing conjugated systems and functionalized aromatic frameworks.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for targets requiring rigid, conjugated aromatic structures.
• Agrochemical Synthesis: Used in the preparation of advanced crop protection agents and herbicides, where the bromo and ethynyl groups allow for further functionalization.
• Organic Electronic Materials: Acts as a precursor in the synthesis of organic semiconductors, light-emitting diodes (OLEDs), and other electronic materials due to its extended π-conjugation potential.
• Ligand and Catalyst Development: Employed in the creation of specialized ligands for catalysis and metal-organic frameworks (MOFs), leveraging its ability to coordinate with metals.
• Academic & Industrial Research: A valuable tool for methodological studies in cross-coupling reactions (e.g., Sonogashira, Suzuki) and alkyne chemistry.
• Fine Chemical Production: Utilized in the custom synthesis of complex, high-value specialty chemicals for various technological applications.

Basic Information

Product Name	4-(4-Bromophenylethynyl) Benzoic Acid Ethyl Ester
CAS No.	866825-52-7
Molecular Formula	C17H13BrO2
Molecular Weight	329.19 g/mol
Synonyms	Ethyl 4-[(4-bromophenyl)ethynyl]benzoate; Benzoic acid, 4-[(4-bromophenyl)ethynyl]-, ethyl ester; 4-(4-Bromophenylethynyl)benzoic acid ethyl ester; 4-(4-Bromophenyl)ethynyl benzoic acid ethyl ester; 4-(p-Bromophenylethynyl)benzoic acid ethyl ester; Ethyl 4-(4-bromophenylethynyl)benzoate; 866825-52-7
EINECS	Contact for details

Quality Control

Our 4-(4-Bromophenylethynyl) Benzoic Acid Ethyl Ester is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency meet the high standards required for research and production. Certificates of Analysis (COA) detailing all specifications are available upon request, providing full traceability and compliance assurance for your projects.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from strong bases and incompatible organic solvents. For long-term storage, consider an inert atmosphere to maintain optimal stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0% (Area %)
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	< 20 ppm

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