Description

4-Ethylphenylacetylene is a high-purity organic building block featuring an alkyne functional group on a substituted benzene ring. This compound is valued for its role as a versatile intermediate in advanced organic synthesis, enabling the construction of complex molecular architectures. It is primarily sought after by R&D chemists and process engineers in the pharmaceutical, agrochemical, and advanced materials sectors for applications such as cross-coupling reactions and polymer synthesis.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of active pharmaceutical ingredients (APIs) and drug candidates via Sonogashira and other palladium-catalyzed cross-coupling reactions.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators that require ethynylarene structural motifs.
• Material Science Research: Serves as a monomer or precursor in the development of conductive polymers, liquid crystals, and organic semiconductors.
• Organic Synthesis Building Block: Employed in academic and industrial laboratories for constructing complex organic molecules, including natural product analogs and molecular scaffolds.
• Chemical Derivatization: Utilized for introducing the ethynylphenyl moiety into larger molecules to modify physical, chemical, or biological properties.

Basic Information

Product Name	4-Ethylphenylacetylene
CAS No.	40307-11-7
Molecular Formula	C10H10
Molecular Weight	130.19 g/mol
Synonyms	1-Ethyl-4-ethynylbenzene; p-Ethylphenylacetylene; 4-Ethynylethylbenzene; (4-Ethylphenyl)ethyne; 1-Ethynyl-4-ethylbenzene; 4-Ethylbenzeneacetylene
EINECS	Contact for details

Quality Control

Our 4-Ethylphenylacetylene is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended long-term storage temperature is 2-8°C under an inert atmosphere to maintain stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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