Selectivity and cytotoxicity studies confirmed that Doravirine is a highly specific nonnucleoside reverse transcriptase inhibitors with minimum off-target activities. In the presence of 50% normal human serum (NHS), Doravirine shows excellent potency in suppressing the replication of WT virus, with a 95% effective concentration (EC95) of 20 nM, as well as K103N, Y181C, and K103N/Y181C mutant viruses with EC9595 of 43, 27, and 55 nM, respectively. Doravirine exhibits similar antiviral activities against 10 different HIV-1 subtype viruses (a total of 93 viruses).