N-Butylpropionamide is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its structure allows it to act as a building block for more complex molecules, making it valuable in the development of active ingredients for drugs and pesticides. Additionally, it finds application in research and development laboratories for studying amide chemistry and exploring new chemical reactions. Its properties also make it suitable for use in specialty chemicals, where it can contribute to the formulation of industrial products requiring specific functional groups.