Used as a key intermediate in organic synthesis, particularly in the preparation of conjugated materials for optoelectronic devices. Its aldehyde group allows for easy functionalization via condensation reactions, while the trimethylsilyl-protected ethynyl group serves as a handle for Sonogashira coupling, enabling the extension of π-conjugated systems. Commonly employed in the synthesis of organic semiconductors, fluorescent dyes, and molecular wires. The silyl group enhances solubility and stability during synthetic transformations, and can be readily deprotected to yield reactive acetylenes for further coupling. Also utilized in the development of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) where precise molecular geometry and functional group compatibility are required.