Used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of certain anticonvulsant and anti-inflammatory drugs. It serves as a building block in organic reactions where the aldehyde group allows for further functionalization, such as in condensation reactions to form Schiff bases or heterocyclic compounds. Its nitro and methoxy substituents influence reactivity and regioselectivity, making it valuable in fine chemical synthesis. Also employed in the development of dyes and agrochemicals due to its aromatic structure and reactive functional groups.