6-Methoxypurine is primarily used in biochemical research as a purine analog. It serves as a valuable tool in studying the metabolism and function of purines in biological systems. Researchers utilize it to investigate enzyme mechanisms, particularly those involving purine metabolism, such as purine nucleoside phosphorylase. It is also employed in the synthesis of modified nucleosides and nucleotides, which are essential for understanding nucleic acid structure and function. Additionally, 6-Methoxypurine has applications in the development of antiviral and anticancer agents, as it can interfere with DNA and RNA synthesis in target cells. Its role in modulating cellular processes makes it a significant compound in medicinal chemistry and drug discovery.