2,7-Diazaspiro[3.5]nonane is primarily utilized in pharmaceutical research and development as a key intermediate in the synthesis of various bioactive compounds. Its unique spirocyclic structure makes it a valuable building block for designing drugs targeting central nervous system disorders, such as anxiety and depression, due to its potential interaction with neurotransmitter receptors. Additionally, it is employed in the creation of ligands for enzyme inhibition studies, particularly in the development of treatments for metabolic and neurodegenerative diseases. The compound’s versatility also extends to its use in organic synthesis, where it serves as a scaffold for constructing complex molecules with potential therapeutic applications.