Used as an intermediate in the synthesis of azo dyes and pigments, particularly for high-performance colorants in inks and coatings. Its nitro and aldehyde functional groups enable coupling reactions and complex formation, enhancing color stability and lightfastness. Also employed in agrochemical synthesis for building active ingredients requiring nitroaromatic motifs. Shows utility in pharmaceutical research as a building block for nitro-containing compounds with potential biological activity. Its carboxylic acid group allows for esterification or salt formation, improving solubility or reactivity in multi-step organic transformations.