2-Aminopyrimidine-4-carboxamide is primarily used in the pharmaceutical industry as a key intermediate in the synthesis of various therapeutic agents. It plays a significant role in the development of antiviral and anticancer drugs, particularly in the production of nucleoside analogs. These analogs are essential in inhibiting the replication of viruses and the growth of cancer cells. Additionally, it is utilized in research laboratories for studying enzyme inhibition and as a building block in organic synthesis to create complex molecules with potential biological activity. Its versatility makes it valuable in medicinal chemistry for designing and optimizing drug candidates.