FNC-TP is primarily utilized in the field of antiviral research and drug development. It serves as a nucleoside triphosphate analog, which plays a crucial role in inhibiting the replication of viral RNA. This compound is particularly effective against RNA viruses, including hepatitis C virus (HCV) and other related pathogens. By incorporating itself into the viral RNA during replication, FNC-TP disrupts the elongation process, thereby preventing the virus from multiplying. Its application extends to preclinical studies where it is evaluated for its efficacy and safety as a potential antiviral therapeutic. Additionally, FNC-TP is used in biochemical assays to study viral polymerase mechanisms and to screen for new antiviral agents.