Antiviral agent 5 is an intermediate used in antiviral agents targeting 3C and 3CL proteases including SARS-CoV-2 Mpro.

Masitinib is a broad coronavirus 3CL inhibitor that effectively blocks replication of SARS-CoV-2. Science 20 Jul 2021: eabg5827 DOI: 10.1126/science.abg5827

Merafloxacin (CI-934), a fluoroquinolone antibacterial agent, is a selective programmed -1 ribosomal frameshifting (-1 PRF) inhibitor of beta coronaviruses. Merafloxacin exhibits in vitro activity against gram-positive and gram-negative bacteria.

Ansabananin is a weak inhibitor of the ATPase activity of the SARS Coronavirus helicase with an IC50 value of 51 μM.

Bananin is an effective inhibitor of the ATPase activity of the SARS Coronavirus helicase with an IC50 value of 2.3 μM.

Eubananin is an effective inhibitor of the ATPase activity of the SARS Coronavirus helicase with an IC50 value of 2.8 μM.

Iodobananin is an effective inhibitor of the ATPase activity of the SARS Coronavirus helicase with an IC50 value of 0.54 μM.

SARS-CoV-2-IN-10 is a potent and nontoxic inhibitor of SARS-CoV-2 3CL protease (3CLpro) with an IC50 and EC50 of 0.13 and 1.03 nM, respectively. SARS-CoV-2 3C-like protease (3CLpro), an enzyme essential for viral replication, is an attractive target for therapeutic intervention. SARS-CoV-2-IN-11 may lead to the emergence of effective SARS-CoV-2-specific antivirals.

Vanillinbananin is an effective inhibitor of the ATPase activity of the SARS Coronavirus helicase with an IC50 value of 0.68 μM.

XR8-69 is a SARS-CoV-2 PLpro inhibitor that shows low micromolar antiviral potency in SARS-CoV-2-infected human cells.

SARS-CoV-2-IN-9 is an inhibitor binding to subsites S1 and S2 in SARS-CoV-2 main protease.

SARS-CoV-2-IN-8 is a SARS-CoV-2 main protease inhibitor with an IC50 value of 0.75 μM.

SARS-CoV-2-IN-7 inhibits viral replication with a nanomolar IC50 value (844 nM) in SARS-CoV-2-infected Vero E6 cells.

SARS-CoV-2-IN-6 is a SARS-CoV-2 3CLpro inhibitor that shows the most potent enzyme inhibitory IC50 value of 73 nM.

NK007 is a novel anti-SARS-CoV-2 agent with an EC50 value of 30 nM.

Cichoriin is an active compounds against SARS-CoV-2, and may be a potential candidate in treating severe COVID-19.

HeE1-2Tyr, a pyridobenzothiazole compound, is a flavivirus RNA dependent RNA polymerases (RdRp) inhibitor. HeE1-2Tyr significantly inhibits West Nile, Dengue and SARS-CoV-2 RdRps (IC50 of 27.6 µM) activity in vitro.

Lufotrelvir (PF-07304814), a phosphate prodrug of PF-00835231, acts as a potent 3CLpro protease (Mpro) inhibitor with SARS-CoV-2 antiviral activity. Lufotrelvir binds and inhibits SARS-CoV-2 3CLpro activity with a Ki of 174nM. Lufotrelvir is promising single antiviral agent and also can be used for the research of combination with other antivirals that target other critical stages of the coronavirus life cycle.

RdRP-IN-2 is a RNA dependent RNA polymerase (RdRp) inhibitor. RdRP-IN-2 significantly inhibits SARS-CoV-2 RdRp with an IC50 of 41.2 µM.RdRP-IN-2 also inhibits Feline coronavirus (FIPV) replication.

Guanosine triphosphate is a native nucleotide. The derivatives of GTP may be used as specific inhibitors against COVID-19.

(Rac)-X77 is a racemate of X77. X77 is a potent non-covalent inhibitor of the main protease of SARS-CoV-2 (SARS-CoV-2 Mpro). X77 binds to SARS-CoV-2 Mpro with a Kd value of 0.057 μM.

Hispidulin 4'-O-β-D-glucopyranosid, a natural compound, may serve as a potential COVID-19 main protease inhibitor.

Cleistanthin B (Diphyllin O-glucoside) is an orally active arylnaphthalene lignan lactone glycoside. Cleistanthin B exhibits anti-SARS-CoV-2 effects in Vero cells, with EC50 of 6.51 µM. Cleistanthin B also exhibits antitumor, diuretic and antihypertensive effects in vivo.

AT-9010 triethylamine, a triphosphate active metabolite of AT-527, is a potent inhibitor of NiRAN (a function essential for viral replication). AT-9010 triethylamine can inhibit SARS-CoV-2 replication.

AT-9010 tetrasodium, a triphosphate active metabolite of AT-527, is a potent inhibitor of NiRAN (a function essential for viral replication). AT-9010 tetrasodium can inhibit SARS-CoV-2 replication.

AT-9010, a triphosphate active metabolite of AT-527, is a potent inhibitor of NiRAN (a function essential for viral replication). AT-9010 can inhibit SARS-CoV-2 replication.

GRL-0496 is a potent chloropyridyl ester-derived SARS-CoV 3CLpro inhibitor, with an IC50 of 30 nM in both enzyme inhibitory and antiviral assays. GRL-0496 shows SARS-CoV antiviral activity, with an EC50 of 6.9 μM.

Jun8-76-3A is a potent and selective noncovalent SARS-CoV-2 Mpro inhibitor with Ki of 0.07 μM. Jun8-76-3A only selectively inhibits SARS-CoV-2 and SARS-CoV Mpro, but not other viral proteases and host proteases including calpain 1, cathepsins L and K, and trypsin.

X77 is a potent inhibitor of the main protease of SARS-CoV-2 (SARS-CoV-2 Mpro).

Aviptadil acetate is an analog vasoactive intestinal polypeptide (VIP) with potent vasodilatory effects. Aviptadil acetate induces pulmonary vasodilation and inhibits vascular SMCs proliferation, platelet aggregation. Aviptadil acetate can be used for the research of pulmonary fibrosis, pulmonary arterial hypertension (PAH) and SARS-CoV-2 caused respiratory failure, et al.