Description

4-(4-Methoxy-Phenylethynyl)-Benzoic Acid Methyl Ester is a high-purity organic building block characterized by its phenylethynyl and benzoate ester functional groups. This compound is a critical intermediate in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily sought after by research and development teams in the pharmaceutical and advanced materials sectors for applications in medicinal chemistry and polymer science.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel active pharmaceutical ingredients (APIs), particularly in therapeutic areas targeting specific receptors.
• Liquid Crystal & OLED Material Synthesis: Serves as a core building block for creating conjugated organic molecules used in electronic displays and lighting.
• Polymer & Resin Modification: Used to incorporate rigid, conjugated segments into polymer backbones to enhance thermal stability and optical properties.
• Organic Semiconductor Research: Employed in the synthesis of small-molecule semiconductors for organic field-effect transistors (OFETs) and photovoltaics.
• Chemical Research & Development: A versatile reagent for cross-coupling reactions and alkyne-based click chemistry in academic and industrial labs.
• Agrochemical Intermediate: Potential use in the synthesis of advanced crop protection agents with tailored properties.

Basic Information

Product Name	4-(4-Methoxy-Phenylethynyl)-Benzoic Acid Methyl Ester
CAS No.	229174-43-0
Molecular Formula	C17H14O3
Molecular Weight	266.29 g/mol
Synonyms	Methyl 4-[(4-methoxyphenyl)ethynyl]benzoate; 4-(4-Methoxyphenylethynyl)benzoic Acid Methyl Ester; Benzoic acid, 4-[(4-methoxyphenyl)ethynyl]-, methyl ester; Methyl 4-(4-methoxyphenylethynyl)benzoate; 4-(4-Methoxy-phenylethynyl)-benzoic acid methyl ester; 229174-43-0; p-(p-Methoxyphenylethynyl)benzoic Acid Methyl Ester
EINECS	Contact for details

Quality Control

Our 4-(4-Methoxy-Phenylethynyl)-Benzoic Acid Methyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials.

Specification

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

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