Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where nitroaniline derivatives serve as building blocks for nitrogen-containing heterocycles. Its functional groups—bromo, nitro, and amino—allow for selective cross-coupling reactions, nucleophilic substitutions, and reductions, making it valuable in medicinal chemistry for constructing complex molecules. Also applied in agrochemical research for designing novel pesticides and herbicides due to its aromatic substitution pattern and reactivity. The ethoxy group enhances solubility and electronic effects, which can influence the biological activity of final compounds.