RPI 1 is primarily utilized in biological and medical research as a selective inhibitor of the enzyme RIP1 kinase. This enzyme plays a critical role in regulating cell death pathways, including apoptosis and necroptosis. By inhibiting RIP1 kinase, RPI 1 helps researchers study the mechanisms of cell death and survival, which is crucial for understanding diseases such as cancer, neurodegenerative disorders, and inflammatory conditions. Additionally, RPI 1 is used in preclinical studies to explore potential therapeutic strategies targeting RIP1 kinase, offering insights into the development of novel treatments for diseases associated with dysregulated cell death processes.