Widely used in molecular biology and biochemistry research as a key component in nucleotide synthesis. Serves as a building block for RNA and DNA analogs, particularly in the development of antiviral and anticancer agents. Commonly employed in enzymatic assays involving kinases and polymerases due to its structural similarity to natural nucleosides. Also utilized in the production of modified nucleic acids for therapeutic applications, including antisense oligonucleotides and siRNA. Plays a role in metabolic studies related to purine salvage pathways.