Sofosbuvir impurity A, an diastereoisomer of Sofosbuvir, is the impurity of Sofosbuvir. Sofosbuvir (PSI-7977) is an of HCV RNA replication, demonstrates potent anti-hepatitis C virus activity.

PSI-7976 is the isomer of PSI-7977. PSI-7977 is an active of HCV RNA replication in the HCV replicon assay, demonstrates potent anti-hepatitis C virus (HCV) activity.

SMCypI C31 is a non-peptidic cyclophilin with potent peptidyl-prolyl cis/trans isomerases (PPIase)y activity (IC50 of 0.1 µM). SMCypI C31 shows pangenotype anti-HCV activity with EC50s ranging from 1.20 to 7.76 μM for genotype 1a, 1b, 2a, 3a, and 5a HCV subgenomic replicons (HCV-SGRs) and chimeric genotype 2a/4a HCV-SGRs. SMCypI C31 disrupts the cyclophilin A-NS5A interaction.

HCV-IN-7 hydrochloride is an orally active and potent pan-genotypic HCV NS5A inhibitor with IC50s of 3-47 pM. HCV-IN-7 hydrochloride shows a superior pan-genotypic profile and a good pharmacokinetic profile coupled with a favorable liver uptake. HCV-IN-7 hydrochloride has anti-viral activity.

HCV-IN-7 is an orally active and potent pan-genotypic HCV NS5A inhibitor with IC50s of 3-47 pM. HCV-IN-7 shows a superior pan-genotypic profile and a good pharmacokinetic profile coupled with a favorable liver uptake. HCV-IN-7 has anti-viral activity.

BI-1230 is potent and digit nanomolar inhibitor of HCV NS3 protease and of viral replication. BI-1230 is also highly selective against other serine/cysteine proteases. BI-1230 shows good Pharmacokinetic(PK) activity.

Simeprevir (TMC 435350) is a potent inhibitor of HCV NS3/4A protease (Ki = 0.36 nM) and viral replication (replicon EC50 = 7.8 nM).

non-nucleoside inhibitor of the NS5B

INX-08189 is a phosphoramidate prodrug of O-6-methyl-2-C-methyl guanosine, potent inhibitor of HCV NS5B polymerase with IC50 of 10 nM in replicon assay.

Cyclophilin inhibitor C31 (SMCypI C31) is a small-molecule cyclophilin (CypA) inhibitor (SMCypI) with PPIase inhibition IC50 of 0.1 uM, displays anti-HCV activity (HCV Gt1b replicon EC50=0.4 uM) and disrupts the CypA-NS5A interaction.

Coblopasvir (KW136, KW-136) is a novel HCV NS5A inhibitor under development for treatment of HCV infection..

A potent, pan-genotype HCV NS5A inhibitor with replicon EC90 of 0.003, 0.016, 0.067, 0.036, 0.007, and 0.007 nM for GT1a, GT1a L31V, GT1a Y93H, GT2b, GT3a, and Gt4a, respectively..

A novel, broadly acting non-nucleoside inhibitor of HCV NS5B polymerase with IC50 of 3 nM and 2 nM for GT1b and GT2a, respectively.

A highly potent, selective, orally bioavailable HCV NS5B polymerase inhibitor with IC50 of 9, 4, and 18 nM for GT1a, GT1b, and GT1b-C316N mutant in HCV replicon assay, respectively.