Used primarily in antiviral research, particularly in the study of HIV and other retroviruses. It acts as a nucleoside analog, inhibiting viral replication by incorporating into viral DNA and terminating its elongation. This makes it a valuable tool in developing treatments for viral infections. Additionally, it is utilized in biochemical studies to understand the mechanisms of viral polymerases and DNA synthesis. Its unique structure allows researchers to explore the effects of modified nucleosides on viral and cellular processes.