DV-B-120 is a competitive inhibitor for dengue virus (DENV) with IC50s of 5.35, 7.39, 10.49 and 8.58 μM, for DENV-1, DENV-2, DENV-3 and DENV-4, respectively, by inhibiting NS2B-NS3 protease. DV-B-120 exhibits antiviral activity through inhibition of DENV replication[1].