Used primarily as an intermediate in organic synthesis, particularly in the pharmaceutical industry for developing active pharmaceutical ingredients. It serves as a building block in the creation of more complex molecules due to the presence of the amide functional group, which can participate in hydrogen bonding and is often found in bioactive compounds. Its ethyl-substituted aromatic ring enhances lipophilicity, making it useful in modifying drug candidates for improved membrane permeability. Also employed in research settings for designing novel compounds with potential therapeutic effects.