Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and fine chemicals. It serves as a building block for heterocyclic compounds due to the presence of reactive ketone and ester groups. Commonly employed in the synthesis of pyrroles, pyridines, and other nitrogen-containing rings. Also utilized in the development of active pharmaceutical ingredients (APIs) where functionalized glutarate derivatives are required. Its diester structure allows for selective hydrolysis or transesterification, enabling further derivatization in multi-step synthetic routes.