Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules with spirocyclic frameworks. Its unique spiro structure and reactive carbonyl groups make it valuable in constructing complex ring systems found in certain central nervous system agents and anti-inflammatory compounds. It is also employed in organic synthesis to introduce the spiro[3.5]nonane motif, enhancing molecular stability and influencing stereochemistry in drug design. Additionally, it serves as a building block in the preparation of specialty polymers and agrochemicals where structural rigidity is required.