Methyl 3-formylisonicotinate is primarily used as an intermediate in the synthesis of various pharmaceutical compounds. It plays a key role in the production of drugs targeting neurological disorders, such as Alzheimer's disease, due to its structural compatibility with bioactive molecules. Additionally, it is utilized in the development of agrochemicals, particularly in the creation of pesticides and herbicides, where its functional groups enable the formation of effective active ingredients. In material science, it serves as a building block for synthesizing organic compounds with potential applications in organic electronics and advanced polymers. Its versatility in chemical reactions makes it valuable in research and industrial settings for designing novel compounds with specific properties.