2. Signaling Pathways
  3. Anti-infection
  4. Virus Protease

Virus Protease

Virus Protease

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Viral proteases are enzymes encoded by the genetic material (DNA or RNA) of viral pathogens. Viral proteases catalyze the cleavage of specific peptide bonds in viral polyprotein precursors or in cellular proteins. Viral proteases may use different catalytic mechanisms involving either serine, cysteine or aspartic acid residues to attack the scissile peptide bond. Selective recognition of these sequence patterns by a complementary substrate binding site of the enzyme ensures a high degree of specific recognition and cleavage.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is the cause of the respiratory illness coronavirus disease 2019 (COVID-19). Initial spike protein priming by transmembrane protease, serine 2 (TMPRSS2) is essential for entry of SARS-CoV-2. After a SARS-CoV-2 virion attaches to a target cell, the cell's protease TMPRSS2 cuts open the spike protein of the virus, exposing a fusion peptide.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-175234
    CHIKV nsP2 protease-IN-2
    		Inhibitor
    CHIKV nsP2 protease-IN-2 (Compound 2o) is a allosteric nonstructural protein 2 helicase (nsP2hel) inhibitor with IC50s of 0.5  μM and 0.9  μM for nsP2 ATPase and RNA unwindase, respectively. CHIKV nsP2 protease-IN-2 has broad-spectrum antialphaviral activity against chikungunya virus (CHIKV), Mayaro virus (MAYV), and Venezuelan equine encephalitis virus (VEEV) (EC50 of 120 nM for CHIKV-nLuc). CHIKV nsP2 protease-IN-2 can be used for alphaviruses infections research.
    CHIKV nsP2 protease-IN-2
  • HY-120863
    (Rac)-PD 135390
    		Inhibitor
    (Rac)-PD 135390 is a dipeptide and an HIV-1 protease inhibitor with an IC50 of 2 nM. (Rac)-PD 135390 can be utilized in antiviral research.
    (Rac)-PD 135390
  • HY-B2230R
    Hinokitiol (Standard)
    		Inhibitor
    Hinokitiol (Standard) is the analytical standard of Hinokitiol. This product is intended for research and analytical applications. Hinokitiol is a component of essential oils isolated from Chymacyparis obtusa, reduces Nrf2 expression, and decreases DNMT1 and UHRF1 mRNA and protein expression, with anti-infective, anti-oxidative, and anti-tumor activities.
    Hinokitiol (Standard)
  • HY-115805
    YKL-04-085
    		Inhibitor
    YKL-04-085 is potent inhibitors of viral translation, with an IC90 of 0.555 μM for DENV2. YKL-04-085 is devoid of any kinase activity.
    YKL-04-085
  • HY-161777
    SARS-CoV-2 Mpro-IN-23
    		Inhibitor
    SARS-CoV-2 Mpro-IN-23 (Compound 2) is an inhibitor for SARS-CoV-2 main protease (Mpro), which inhibits wildtype Mpro and mutant Mpro variants, with IC50 of 0.057-0.92 μM. SARS-CoV-2 Mpro-IN-23 inhibits the post-entry viral processes of wild-type SARS-CoV-2 single-round infectious particles (SRIPs), suppresses the viral replication of Mpro wildtype and Mpro mutants with EC50 of 0.02-0.52 μM.
    SARS-CoV-2 Mpro-IN-23
  • HY-108325S
    Brequinar-d3
    		Inhibitor
    Brequinar-d3 (DUP785-d3) is deuterium labeled Brequinar. Brequinar (DUP785) is a potent inhibitor of dihydroorotate dehydrogenase (DHODH) with an IC50 of 5.2 nM for human DHODH. Brequinar has potent activities against a broad spectrum of viruses. Brequinar also has an anti-SARS2 activity.
    Brequinar-d<sub>3</sub>
  • HY-174439
    Nsp12-IN-2
    		Inhibitor
    Nsp12-IN-2 (Compound 8), the triphosphate metabolite of 4'-thiouridine (HY-W113081), is a SARS-CoV-2 Nsp12 inhibitor. Nsp12-IN-2 inhibits the RNA-dependent RNA polymerase (RdRp) activity of the SARS-CoV-2 Nsp12-Nsp7-Nsp8 complex, terminates RNA synthesis and also blocks the RNAylation and NMPylation of Nsp9. Nsp12-IN-2 is promising for research of infections caused by SARS-CoV-2, other coronaviruses, and other RNA viruses.
    Nsp12-IN-2
  • HY-170599
    H117
    		Inhibitor 99.27%
    H117 is a PROTAC target protein ligand that can be used to synthesize PROTAC HP211206 (HY-170598). H117 has competitive binding and inhibition ability on SARS-CoV-2 main protease (Mpro) with an IC50 of 151.3 nM.
    H117
  • HY-170399
    SARS-CoV-2 PLpro-IN-1
    		Inhibitor
    SARS-CoV-2 PLpro-IN-1 (Compound 85) is a non-covalent and competitive inhibitor of SARS-CoV-2 PLpro with an IC50 of 15.06 μM and a Ki of 22.93 μM. SARS-CoV-2 PLpro-IN-1 inhibits the proliferation of Vero cell with an IC50 of 7.47 μM.
    SARS-CoV-2 PLpro-IN-1
  • HY-172515
    ent-Oseltamivir
    		Inhibitor
    ent-Oseltamivir, the enantiomer of Oseltamivir (HY-13317), is a neuraminidase (NA) of influenza virus inhibitor. ent-Oseltamivir is promising for research of influenza virus infections.
    ent-Oseltamivir
  • HY-B0448S2
    Phenytoin-d5
    		Inhibitor
    Phenytoin-d5 (5,5-Diphenylhydantoin-d5) is deuterium labeled Phenytoin. Phenytoin (5,5-Diphenylhydantoin) is a potent Voltage-gated Na+ channels (VGSCs) blocker. Phenytoin has antiepileptic activity and reduces breast tumour growth and metastasis in mice.
    Phenytoin-d<sub>5</sub>
  • HY-173305
    Mpro/PLPro-IN-2
    		Inhibitor
    Mpro/PLPro-IN-2 (Compound 22l) is a non-covalent competitive dual inhibitor of the papain-like protease and main protease of SARS-CoV-2, with a Ki of 0.2 μM for the papain-like protease and a Ki of 1.1 μM for the main protease. Mpro/PLPro-IN-2 can be used in the research field of anti-SARS-CoV-2.
    Mpro/PLPro-IN-2
  • HY-173199
    PRRSV-IN-1
    		Inhibitor
    PRRSV-IN-1 (Compound 4s) is a nsp4 protease inhibitor targeting PRRSV, exhibiting an EC50 of 0.45 μM against PRRSV. It binds to the nsp4 protease with a Kd value of 29.24 pM and inhibits nsp4 protease activity with an IC50 of 80.36 pM. PRRSV-IN-1 can be used for research in the field of antiviral infections.
    PRRSV-IN-1
  • HY-W614623
    (S)-ML188
    		Inhibitor
    (S)-ML188 is a SARS-CoV 3-chymotrypsin-like protease (3CLpro) inhibitor (IC50: 1.5 μM). (S)-ML188 has antiviral activity with an EC50 value of 12.9 μM against SARS-CoV. (S)-ML188 inhibits the activity of 3CLpro via non-covalent binding and can be used in the study of SARS-CoV.
    (S)-ML188
  • HY-13428R
    Tubacin (Standard)
    		Inhibitor
    Tubacin (Standard) is the analytical standard of Tubacin. This product is intended for research and analytical applications. Tubacin is a potent and selective inhibitor of HDAC6, with an IC50 value of 4 nM and approximately 350-fold selectivity over HDAC1. Tubacin also inhibits metallo-β-lactamase domain-containing protein 2 (MBLAC2).
    Tubacin (Standard)
  • HY-158763
    MPI8
    		Inhibitor
    MPI8 (TG0205221) is an inhibitor of the major protease of SARS-CoV-2 (MPro) with high antiviral activity. MPI8 exerts its antiviral effect by dual and selective inhibition of SARS-CoV-2 MPro and host cell cysteine protease L (cathepsin L). This dual inhibition enhanced the overall antiviral potency and effect of MPI8. MPI8 can be used in clinical studies of COVID-19.
    MPI8
  • HY-174233
    PROTAC SARS-CoV-2 Degrader-1
    		Degrader
    PROTAC SARS-CoV-2 Degrader-1 (Compound LLP019) is a SARS-CoV-2 MPro PROTAC degrader with a DC50 value of 4.7 μM. PROTAC SARS-CoV-2 Degrader-1 induces MPro ubiquitination and proteasomal degradation to inhibit SARS-CoV-2 replication. PROTAC SARS-CoV-2 Degrader-1 is promising for research of COVID-19 and related coronavirus infections. (Pink: DH03 (HY-32717); Black: linker (HY-42149); Blue: Thalidomide-4-O-CH2-COO(t-Bu) (HY-42771).
    PROTAC SARS-CoV-2 Degrader-1
  • HY-N0469A
    L-Lysine (sulfite)
    		Inhibitor
    L-lysine sulfite is an essential amino acid for humans, offers numerous benefits and can be used in herpes research. Additionally, L-lysine sulfite enhances calcium absorption, reduces diabetes-related complications, improves gut health, and alleviates pancreatitis inflammation.
    L-Lysine (sulfite)
  • HY-14909R
    Bardoxolone (Standard)
    		Inhibitor
    Bardoxolone (Standard) is the analytical standard of Bardoxolone (HY-14909). This product is intended for research and analytical applications. Bardoxolone is an orally active activator of nuclear regulatory factor (NRf-2) and an inhibitor of SARS-CoV-2 3CL protease. Bardoxolone inhibits SARS-CoV-2 3CL protease with an EC50 value of 0.43 μM in vero cells. Bardoxolone also inhibits necroptosis in HT-29 cells with an EC50 value of 1.30 μM by blocking necrosome formation through inhibiting phosphorylation of RIPK1 and RIPK3. Bardoxolone can be used in research on COVID-19, TNF-induced systemic inflammatory response syndrome (SIRS), and cerebral ischemia-reperfusion injury.
    Bardoxolone (Standard)
  • HY-176229
    Mpro/Cathepsin L-IN-2
    		Inhibitor
    Mpro/Cathepsin L-IN-2 (Compound 1) is a dual irreversible inhibitor of SARS-CoV-2 main protease (Mpro, pIC50=8.61) and human cathepsin L (hCTSL, pIC50=7.64). Mpro/Cathepsin L-IN-2 is promising for research of COVID-19 and other coronavirus infections.
    Mpro/Cathepsin L-IN-2
Cat. No. Product Name / Synonyms Application Reactivity