5'-Amino-5'-deoxyguanosine is primarily utilized in biochemical research, particularly in the study of nucleic acids and their interactions. It serves as a modified nucleoside, enabling scientists to investigate the structural and functional roles of nucleosides in DNA and RNA. This compound is also employed in the development of antiviral and anticancer agents, as its unique structure can be incorporated into oligonucleotides to modulate their biological activity. Additionally, it plays a role in enzymatic studies, helping to understand the mechanisms of nucleoside kinases and other enzymes involved in nucleotide metabolism. Its applications extend to the synthesis of nucleotide analogs, which are crucial for probing cellular processes and designing therapeutic molecules.