6-Azauridine, a derivative of 6-azauracil, is primarily utilized in the field of medical research and therapy due to its ability to interfere with nucleic acid synthesis. It acts as an antimetabolite, inhibiting the enzymatic conversion of orotic acid to uridine monophosphate, which is a crucial step in the biosynthesis of pyrimidine nucleotides. This property makes it effective in the treatment of certain types of cancer, as it can selectively target and inhibit the proliferation of rapidly dividing cancer cells. Additionally, it has been explored for its antiviral properties, particularly against RNA viruses, by disrupting viral replication processes. In research settings, 6-azauridine is used to study the mechanisms of nucleotide metabolism and to develop novel therapeutic strategies for diseases involving abnormal cell growth. Use under medical supervision is recommended due to potential side effects.