Used in organic synthesis as a building block for complex molecules, particularly in the development of pharmaceuticals and bioactive compounds. It serves as a key intermediate in the creation of heterocyclic compounds, which are essential in drug discovery. Its ethynyl group allows for versatile chemical reactions, such as click chemistry, enabling the formation of stable linkages in targeted drug delivery systems. Additionally, it is utilized in the synthesis of materials for optoelectronics due to its unique electronic properties. Its applications also extend to the development of inhibitors for enzymes, contributing to research in therapeutic treatments for various diseases.