Danoprevir(ITMN 191; ITMN-191; R7227; RO5190591; RG7227) is an inhibitor of the NS3/4A protease.Danoprevir (ITMN 191; ITMN-191; R7227; RO5190591; RG7227)is useful for anti-HCV,anti-cancer.Potent orally available peptidomimetic inhibitor of the NS3/4A protease of hepatitis C virus (HCV) (IC 50 = 0.2-3.5 nM). Inhibition effect for HCV genotypes 1A/1B/4/5/6 is ~10-fold higher than 2B/3A. No appreciable inhibition in a panel of 79 other protea