Used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It serves as a building block in the development of active ingredients due to its amide functional group, which can undergo various transformations such as hydrolysis, reduction, or coupling reactions. Its ethyl and phenyl groups contribute to lipophilicity, making it useful in modifying compound solubility and bioavailability in drug design. Also employed in research settings for studying amide stability and reaction mechanisms.