6-Nitroindoline is primarily used in organic synthesis as an intermediate for the preparation of various pharmaceuticals and agrochemicals. Its structure serves as a building block for creating more complex molecules, particularly in the development of compounds with potential biological activity. Researchers utilize it in the synthesis of indole derivatives, which are known for their applications in medicinal chemistry, including the development of drugs targeting neurological disorders and cancer. Additionally, it finds use in the study of nitroaromatic compounds, aiding in the exploration of their reactivity and potential applications in material science.