FASN-IN-1 is primarily utilized in biochemical research to study the role of fatty acid synthase (FASN) in various biological processes. It serves as a potent inhibitor of FASN, making it a valuable tool for investigating lipid metabolism and its connection to diseases such as cancer, obesity, and metabolic disorders. Researchers use FASN-IN-1 to explore how inhibiting FASN activity affects tumor growth, as many cancers rely on increased lipid synthesis for proliferation. Additionally, it aids in understanding the metabolic reprogramming in cancer cells and identifying potential therapeutic targets. Its application extends to studying the relationship between FASN and insulin resistance, providing insights into diabetes and other metabolic syndromes.