Used as a protected building block in organic synthesis, particularly in pharmaceutical and agrochemical industries. The ethynyl group allows for coupling reactions such as Sonogashira, enabling the formation of conjugated systems important in materials science and drug development. The silyl ether group acts as a protecting group for phenols, offering stability under various reaction conditions and can be selectively removed when needed. Its main utility lies in multi-step synthesis where functional group compatibility and protection are critical.