This compound is primarily utilized in the field of organic synthesis, where it serves as a key intermediate in the development of complex molecular structures. Its unique spirocyclic and thiopyrano-quinoline framework makes it valuable for constructing heterocyclic compounds, which are often explored for their potential biological activities. Researchers leverage its structural complexity to design and synthesize novel molecules for pharmaceutical applications, particularly in the search for new drugs with antimicrobial, anticancer, or anti-inflammatory properties. Additionally, its multiple carboxylate groups provide reactive sites for further chemical modifications, enabling the creation of diverse derivatives for material science applications, such as organic electronics or advanced polymers.