Used primarily as a building block in organic synthesis, especially in the development of liquid crystals for display technologies. Its structure supports mesogenic properties when incorporated into larger molecules, making it valuable in the production of advanced materials for LCDs. It also serves as an intermediate in the synthesis of conjugated polymers for organic electronics, including semiconductors and light-emitting diodes (OLEDs). The ethynyl group enables coupling reactions, facilitating the construction of extended π-conjugated systems important in optoelectronic applications.