Used in organic synthesis as a reactive epoxide intermediate for constructing complex fluorene-based frameworks. Its strained oxirane ring allows ring-opening reactions with nucleophiles, enabling the formation of functionalized derivatives for pharmaceuticals and advanced materials. Commonly employed in the development of fluorescent probes and conjugated polymers due to the inherent photophysical properties of the dichlorofluorene core. Also serves as a building block in the synthesis of specialty monomers for optoelectronic applications.