Used as an intermediate in organic synthesis, particularly in the preparation of spiro-based materials for optoelectronic devices. Commonly employed in the development of host materials for blue phosphorescent OLEDs due to its high triplet energy and good thermal stability. Its spiro structure helps suppress intermolecular interactions, enhancing emission efficiency. Also utilized in the synthesis of charge-transport materials and as a building block for cross-coupling reactions in the fabrication of advanced organic semiconductors.