Used as a key intermediate in organic synthesis, particularly in the preparation of complex aromatic and conjugated systems. Its ethynyl functionality enables coupling reactions, such as Sonogashira cross-coupling, to build extended π-conjugated molecules for applications in materials science, including organic semiconductors and fluorescent dyes. The trimethylsilyl group acts as a protecting group for the alkyne, allowing selective deprotection and further functionalization. Its methoxy and methyl substituents influence electronic properties and regioselectivity in ring-based reactions, making it valuable in the development of pharmaceuticals and agrochemicals.