Spiro[3.4]octane-2-carboxylic acid is primarily utilized in the field of organic synthesis and medicinal chemistry. Its unique spirocyclic structure makes it a valuable building block for the development of novel pharmaceutical compounds. It is often employed in the design of drug candidates due to its ability to enhance molecular rigidity and improve binding affinity to biological targets. Additionally, this compound is explored in the creation of bioactive molecules, particularly in the development of enzyme inhibitors and receptor modulators. Its application extends to materials science, where it is used to synthesize advanced polymers with specific structural properties.