Used in organic synthesis as a versatile building block for creating complex molecules, particularly in the development of pharmaceuticals and agrochemicals. Its ethynyl group allows for efficient coupling reactions, such as Sonogashira coupling, making it valuable in constructing carbon-carbon bonds. Additionally, it serves as a precursor in the synthesis of heterocyclic compounds, which are often explored for their biological activity. Its methoxy group can influence the electronic properties of the resulting molecules, aiding in the design of compounds with specific reactivity or binding characteristics.