Foscarnet sodium (Trisodium phosphonoformate) is a viral DNA polymerase activity inhibitor, leading to reversible suppression of viral replication. Foscarnet sodium is an antiherpesvirus agent used in cytomegalovirus retinitis.

A2ti-1 is a selective and high-affinity annexin A2/S100A10 heterotetramer (A2t) inhibitor with an IC50 of 24 μM. A2ti-1 specifically disrupts the protein-protein interaction (PPI) between A2 and S100A10. A2ti-1 prevents human papillomavirus type 16 (HPV16) infection.

A2ti-2 is a selective and low-affinity annexin A2/S100A10 heterotetramer (A2t) inhibitor with an IC50 of 230 μM. A2ti-2 specifically disrupts the protein-protein interaction (PPI) between A2 and S100A10. A2ti-2 prevents human papillomavirus type 16 (HPV16) infection.

5-Hydroxytoluene-2,4-disulphonic acid diammonium is an impurity of Policresulen. Policresulen is a potent NS2B/NS3 protease inhibitor with an IC50 of 0.48 μg/mL. Policresulen effectively inhibits the replication of DENV2 virus in BHK-21 cells with an IC50 of 4.99 μg/mL. Policresulen acted as a competitive inhibitor of the protease, and slightly affected the protease stability.

2-Hydroxy-4-methylbenzenesulphonic acid ammonium is an impurity of Policresulen. Policresulen is a potent NS2B/NS3 protease inhibitor with an IC50 of 0.48 μg/mL. Policresulen effectively inhibits the replication of DENV2 virus in BHK-21 cells with an IC50 of 4.99 μg/mL. Policresulen acted as a competitive inhibitor of the protease, and slightly affected the protease stability.

4-Hydroxy-2-methylbenzenesulfonic acid ammonium is an impurity of Policresulen. Policresulen is a potent NS2B/NS3 protease inhibitor with an IC50 of 0.48 μg/mL. Policresulen effectively inhibits the replication of DENV2 virus in BHK-21 cells with an IC50 of 4.99 μg/mL. Policresulen acted as a competitive inhibitor of the protease, and slightly affected the protease stability.

GSK2818713 is a novel Hepatitis C NS5A replication complex inhibitor.

AL-611 is an HCV NS5B polymerase inhibitor (EC50 = 5 nM).

Brecanavir (GW640385) is a novel, potent HIV protease inhibitor.

Merbromin (Mercury dibromofluorescein disodium salt, Mercurochrome, Merbromine, Mercurocol, Sodium mercurescein, Asceptichrome, Supercrome, Brocasept, Cinfacromin), a xanthene dye, is a topical antiseptic used for minor cuts and scrapes. Merbromin is an organomercuric disodium salt compound and a fluorescein. Merbromin is a selective inhibitor of 3CLpro and provides a scaffold to design effective inhibitors of SARS-CoV-2.

Policresulen is a potent inhibitor of DENV2 NS2B/NS3 protease (IC50 of 0.48 μg/mL). Policresulen inhibits DENV2 replication in BHK-21 cells with IC50 of 4.99 μg/mL. Policresulen acts as a competitive inhibitor of the protease, and slightly affects the protease stability.

(+)-JNJ-A07 is a highly potent, orally active pan-serotype dengue virus inhibitor targeting the NS3-NS4B interaction. (+)-JNJ-A07 exerts nanomolar to picomolar activity against a panel of 21 clinical isolates. (+)-JNJ-A07 has a favourable pharmacokinetic profile that results in outstanding efficacy against dengue virus infection in mouse infection models.

L-Lysine-13C dihydrochloride is the 13C-labeled L-Lysine dihydrochloride. L-lysine dihydrochloride is an essential amino acid for humans with various benefits including treating herpes, increasing calcium absorption, reducing diabetes-related illnesses and improving gut health.

FWM-3 is a potent SARS-CoV-2 NSP13 helicase inhibitor.

INSCoV-600K(1) is a potent inhibitor of Mpro (3CLpro). Proteases (PL pro and 3CL pro) are involved with transcription and replication of the virus. INSCoV-600K(1) has the potential for the research of SARS-CoV-2 infection (extracted from patent WO2021219089A1).

INSCoV-601I(1) is a potent inhibitor of Mpro (3CLpro). Proteases (PL pro and 3CL pro) are involved with transcription and replication of the virus. INSCoV-601I(1) has the potential for the research of SARS-CoV-2 infection (extracted from patent WO2021219089A1).

INSCoV-614(1B) is a potent inhibitor of Mpro (3CLpro). Proteases (PL pro and 3CL pro) are involved with transcription and replication of the virus. INSCoV-614(1B) has the potential for the research of SARS-CoV-2 infection (extracted from patent WO2021219089A1).

SP-471 is a potent dengue virus (DENV) protease inhibitor with IC50 value of 18 μM. SP-471 inhibits both intermolecular and intramolecular protease processes of DENV.

SP-471P is a potent dengue virus (DENV) protease inhibitor with EC50s of 5.9 μM, 1.4 μM, 5.1 μM and 1.7 μM for DENV1, DENV2, DENV3 and DENV4, respectively and CC50 value over 100 μM. SP-471P can reduce DENV viral RNA synthesis.

Umifenovir is a potent, orally active broad-spectrum antiviral agent with activity against a number of enveloped and non-enveloped viruses. Umifenovir is used as an anti-influenza virus agent. Umifenovir could effectively inhibit the fusion of virus with host cells. Umifenovir is an efficient inhibitor of SARS-CoV-2 in vitro. Umifenovir shows anti-inflammatory activity.

Hydroxyethylamine (Compd VII) is a SARS-CoV-2 3CLpro inhibitor with an IC50 of ~10 μM in the spread assay. Hydroxyethylamine has potent antiviral activities.

NITD-688 is an orally active pan-serotype inhibitor of the dengue virus NS4B protein. NITD-688 can be used in the research of dengue virus (DENV).

LabMol-301 inhibits both NS5 RdRp and NS2B-NS3pro activity (IC50: 0.8 and 7.4 μM, respectively). LabMol-301 has a cytoprotective effect and prevents Zika virus (ZIKV)-induced cell death.

5-Bromo-2′-deoxy-2′-fluorouridine (Example 1), a 5-halo analog, is potential as an antiviral agent.