– EIDD-1931 (?-d-N4-Hydroxycytidine, NHC) inhibits both murine hepatitis virus (MHV) (EC50 of 0.17??M) and Middle East respiratory syndrome CoV (MERS-CoV) (EC50 of 0.56 ?M) with minimal cytotoxicity. It also inhibits SARS-CoV-2 and multiple 2 endemic, epide