4-azaspiro[2.5]octane is primarily utilized in the field of organic synthesis as a versatile building block for the development of various complex molecules. Its unique spirocyclic structure makes it valuable in the design of pharmaceuticals, particularly in the creation of compounds with potential biological activity. It is often employed in the synthesis of drug candidates targeting neurological disorders, as its structure can mimic certain natural alkaloids and neurotransmitters. Additionally, it serves as a key intermediate in the preparation of agrochemicals and other fine chemicals, where its rigid framework can enhance the stability and efficacy of the final products. Researchers also explore its use in material science, particularly in the development of novel polymers and coatings with specialized properties.