GS-4361 is primarily used in the field of antiviral research, particularly in the development of treatments for viral infections. Its application is focused on inhibiting specific viral enzymes or proteins, which are crucial for the replication and survival of the virus. This compound has shown potential in targeting viruses such as hepatitis C, where it disrupts the viral lifecycle, preventing the virus from spreading within the host. Researchers also explore its use in combination therapies to enhance the effectiveness of existing antiviral drugs. Additionally, GS-4361 is studied for its potential in treating other RNA viruses, contributing to the broader effort in combating viral diseases.