TUG-891 is primarily used in research settings to study the role of GPR120, a G protein-coupled receptor involved in various physiological processes. It acts as a selective agonist for GPR120, making it valuable for investigating its function in metabolic regulation, inflammation, and insulin sensitivity. Researchers utilize TUG-891 to explore its potential therapeutic applications in conditions like obesity, type 2 diabetes, and inflammatory diseases. Additionally, it helps in understanding the signaling pathways and mechanisms mediated by GPR120, contributing to the development of targeted treatments for metabolic and inflammatory disorders.