Ethyl 7-fluoro-2,3-dioxoindoline-6-carboxylate is primarily used in pharmaceutical research and development. It serves as a key intermediate in the synthesis of various biologically active compounds, particularly those targeting neurological and psychiatric disorders. Its structure is valuable in creating molecules with potential therapeutic effects, such as anti-inflammatory, anti-cancer, or neuroprotective properties. Additionally, it is utilized in organic chemistry for constructing complex heterocyclic frameworks, which are essential in drug discovery and medicinal chemistry. Its fluorine-substituted indoline core makes it a versatile building block for designing novel drug candidates.