RSV-IN-1 is primarily used in research settings as an inhibitor targeting respiratory syncytial virus (RSV) replication. It is particularly valuable in studying the mechanisms of RSV infection and evaluating potential antiviral therapies. Researchers employ RSV-IN-1 to understand viral protein functions and to screen for compounds that could lead to the development of effective treatments for RSV infections, which are especially critical for vulnerable populations like infants and the elderly. Its application contributes to advancing antiviral drug discovery and improving therapeutic strategies against RSV.