2-Amino-5-iodonicotinic acid is primarily used in the field of organic synthesis and pharmaceutical research. It serves as a key intermediate in the preparation of various heterocyclic compounds, which are often explored for their potential biological activities. The iodine atom in its structure makes it a valuable building block for further functionalization through cross-coupling reactions, such as Suzuki or Sonogashira reactions, enabling the creation of complex molecules. Additionally, it is utilized in the development of novel drug candidates, particularly in the synthesis of compounds targeting enzymes or receptors in medicinal chemistry. Its role in the construction of nicotinic acid derivatives also makes it relevant in the study of metabolic pathways and drug discovery.