Used in organic synthesis, particularly as an intermediate in the production of pharmaceuticals and agrochemicals. Its structure, featuring both an aldehyde and a phenylethynyl group, makes it valuable for constructing complex molecules through reactions like Sonogashira coupling or further functionalization. It is also employed in the development of organic electronic materials due to its conjugated system, which can enhance conductivity or optoelectronic properties. Additionally, it serves as a building block in the synthesis of dyes and pigments, leveraging its aromatic and reactive functional groups.