Used in antiviral research, particularly in the development of nucleoside analogs targeting DNA viruses. Its modified sugar and fluorinated base enhance stability and uptake in cells, improving inhibition of viral replication. Commonly explored in studies related to herpesviruses and hepatitis B due to its ability to interfere with viral DNA polymerase. Also serves as a key intermediate in synthesizing more complex antiviral prodrugs with improved pharmacokinetic profiles.