Butyl isocyanatoacetate is primarily used in the synthesis of various organic compounds, particularly in the production of polymers and coatings. Its isocyanate group reacts with hydroxyl groups to form urethane linkages, making it valuable in creating polyurethane-based materials. These materials are widely applied in adhesives, sealants, and protective coatings due to their durability and resistance to environmental factors. Additionally, it serves as an intermediate in the manufacture of pharmaceuticals and agrochemicals, where its reactive nature allows for the introduction of functional groups into complex molecules. Its versatility in chemical reactions makes it a useful component in industrial and research applications.