Table 1. Biochemical IC50 Values (μM) of Covalent Inhibitors against Mpro via a FRET-Based Enzymatic Assaya.
IC50 values were determined in vitro in the presence of the FRET substrate (20 μM) after 15-min treatment of Mpro (0.5 μM) with each compound at various concentrations. Measurements of the inhibitory activities of the compounds were performed in duplicate. IC50 values in duplicates were shown except for those that caused little inhibition at up to 80 μM.