Ethyl 2-amino-5-iodonicotinate is primarily used as a key intermediate in organic synthesis, particularly in the development of pharmaceuticals and agrochemicals. Its structure allows for further functionalization, making it valuable in the synthesis of complex molecules. It is often employed in the preparation of active pharmaceutical ingredients (APIs) for drugs targeting various diseases, including cancer and infectious diseases. Additionally, its iodine substituent makes it a useful building block in cross-coupling reactions, such as Suzuki or Sonogashira reactions, which are crucial in creating biologically active compounds. In agrochemical research, it serves as a precursor for the development of novel pesticides and herbicides. Its versatility and reactivity make it a valuable tool in medicinal chemistry and drug discovery processes.