Phenylurethane is primarily used as an intermediate in the synthesis of various organic compounds, particularly in the production of pharmaceuticals and agrochemicals. It serves as a building block for creating more complex molecules, such as urethane-based drugs and pesticides. Additionally, phenylurethane is utilized in research and development for studying chemical reactions and mechanisms, especially those involving carbamates. Its application extends to the field of polymer chemistry, where it contributes to the synthesis of polyurethane materials with specific properties. In some cases, it is also employed as a protective group in organic synthesis to shield reactive functional groups during multi-step chemical processes.