Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and fine chemicals. Its aldehyde and ester functional groups allow for diverse chemical transformations, such as condensation reactions, reductions, and cyclizations. Commonly employed in the development of active pharmaceutical ingredients (APIs) where aromatic aldehydes are needed for building molecular complexity. Also utilized in the synthesis of fragrances and dyes due to its reactive backbone that can be modified to produce aromatic or heterocyclic structures.