Used in organic synthesis, it serves as a key intermediate for the production of pharmaceuticals and fine chemicals. Its aldehyde and carboxylic acid functional groups make it versatile for constructing complex molecules. It is particularly valuable in the development of active pharmaceutical ingredients (APIs) and agrochemicals. Additionally, it finds application in the synthesis of dyes and pigments due to its aromatic structure. Its reactivity allows for modifications that enhance the properties of end products in various industrial applications.