Used extensively in biochemical research, particularly in the study of DNA repair mechanisms and mutagenesis. It serves as a substrate for enzymes like DNA polymerases, helping to understand their function and specificity. Additionally, it is employed in the synthesis of oligonucleotides for probing genetic material and in the development of antiviral and anticancer drugs, where its incorporation into nucleic acids can inhibit viral replication or tumor growth. Its role in nucleotide metabolism studies also aids in exploring cellular processes and disease pathways.