SARS-CoV-2 nsp14-IN-2 is a potent SARS-CoV-2 Nsp14 methyltransferase inhibitor with an IC50 value of 0.093 µM. SARS-CoV-2 nsp14-IN-2 shows antiviral activity. SARS-CoV-2 nsp14-IN-2 shows plasma and liver S9 stability. SARS-CoV-2 nsp14-IN-2 has the potential for the research of COVID-19[1].