DNA2 inhibitor C5 is a potent, competitive and specific inhibitor of DNA2 nuclease activity with an IC₅₀ of 20 μM. DNA2 inhibitor C5 inhibits nuclease, DNA dependent ATPase, helicase, and DNA binding activities of DNA2. DNA2 inhibitor C5 is a promising lead compound to develop sensitizers for cancer chemotherapeutics that cause replication stress^[1]. IC50 & Target: IC50: 20 μM (DNA2 nuclease)^[1]