As-358 (compound 3b) (0-500 μM; 10 days) exhibits inhibitory activities against EBOV and MARV [1]. As-358 (0-100 μM; 48 hours) can inhibit WT-EboV-GP and mutant D522A-EboV-GP, with IC 50 s of 1.7 and 2.2 μM, respectively [1]. Cell Proliferation Assay Cell Line: Vero (infected with EBOV and MARV) [1] Concentration: 0-500 μM Incubation Time: 10 days Result: Exhibited inhibitory activities against EBOV and MARV, with IC 50 s of 47.5 ± 8.2 μM and 3.7 ± 1.7 μM, SI values of 9 and 118, respectively.