7-Nitroindole is primarily used in organic synthesis as a building block for more complex chemical structures. It serves as a key intermediate in the production of pharmaceuticals, particularly in the development of compounds with potential therapeutic properties. Its nitro group makes it a valuable precursor in the synthesis of indole derivatives, which are often explored for their biological activities, such as antimicrobial, anti-inflammatory, and anticancer effects. Additionally, 7-Nitroindole is utilized in research to study the electronic properties of indole compounds, aiding in the design of new materials with specific functionalities.