Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of nitroaromatic compounds with biological activity. Its aldehyde and carboxylic acid functional groups allow for versatile chemical modifications, such as condensation reactions and esterifications, making it valuable in creating complex organic molecules. Commonly employed in the preparation of dyes and pigments due to its nitro group and aromatic structure, which contribute to strong light absorption properties. Also utilized in research settings for designing sensors or functional materials where electron-withdrawing nitro groups and reactive aldehyde moieties are required.