6-Formylpicolinic acid is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It serves as a building block for the development of complex molecules, especially in the synthesis of heterocyclic compounds. Its formyl group makes it a valuable precursor for creating ligands and catalysts used in coordination chemistry. Additionally, it finds application in the preparation of biologically active compounds, including potential drug candidates, due to its ability to introduce functional groups that enhance molecular interactions. Its role in research and development is significant, particularly in the design of novel therapeutic agents and chemical probes.