Cyclapolin 9 is primarily used in research and development within the field of biochemistry and pharmacology. It is studied for its potential role as a cyclin-dependent kinase (CDK) inhibitor, which makes it a candidate for investigating cancer therapies. By targeting CDKs, it may help regulate cell cycle progression and inhibit the proliferation of cancer cells. Additionally, it is utilized in laboratory studies to understand cellular mechanisms and signaling pathways related to cell division and growth. Its application is largely confined to experimental settings, where it contributes to advancing knowledge in drug discovery and therapeutic strategies for diseases involving abnormal cell cycle regulation.