viral polyprotein

By Targets:	Arenavirus (1) Cathepsin (1) Drug Intermediate (6) HIV (8) HIV Protease (8) Isotope-Labeled Compounds (2) Reference Standards (1) SARS-CoV (6) Virus Protease (4)
By Research Areas:	Infection (14)
Click Chemistry:	Alkynes (1)

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-19476

AG-7404	Virus Protease	Infection
AG-7404 is an orally active, irreversible inhibitor of the picornavirus 3C protease. AG-7404 blocks the processing of viral polyproteins, thereby inhibiting viral replication. AG-7404 has synergistic antiviral activity with capsid inhibitors such as V-073 (HY-104074) or BTA798 (HY-106254) and is effective against V-073-resistant variants. AG-7404 is used in the study of enterovirus infections such as poliovirus .

HY-153228

Pomotrelvir PBI-0451	SARS-CoV	Infection
Pomotrelvir is a selective, competitive, orally active covalent inhibitor of the SARS-CoV-2 main protease (M ^pro), with an IC₅₀ of 24 nM for wild-type SARS-CoV-2 M ^pro. Pomotrelvir inhibits viral polyprotein processing, thereby preventing viral replication. Pomotrelvir has shown broad antiviral activity against multiple SARS-CoV-2 variants (including Omicron) in cell-based experiments, and has an additive effect when combined with nucleoside analogs that target viral RNA synthesis. Pomotrelvir is primarily used for the research and development of COVID-19 antiviral drugs, especially for infections caused by SARS-CoV-2 and its variants .

HY-173575

SARS-CoV-2 3CLpro-IN-31	SARS-CoV Virus Protease	Infection
SARS-CoV-2 3CLpro-IN-31 (Compound 13c) is a potent SARS-CoV-2 3CL protease (3CLpro) inhibitor of with an IC₅₀ value of 37.33 nM. SARS-CoV-2 3CLpro-IN-31 blocks viral polyprotein cleavage and inhibits SARS-CoV-2 replication. SARS-CoV-2 3CLpro-IN-31 is promising for research of SARS-CoV-2 infection .

HY-N15365

Antcin B	Virus Protease SARS-CoV	Infection
Antcin B is a SARS-CoV-2 3-chymotrypsin-like protease (3CL Pro) inhibitor. Antcin B binds to multiple key amino acid residues of 3CL Pro(such as Leu141, Asn142, Glu166, His163, etc.) through hydrogen bonds, salt bridges, and hydrophobic interactions, thereby inhibiting the activity of 3CL Pro, blocking the cleavage process of viral polyproteins, and suppressing the replication of the SARS-CoV-2 virus in host cells. Antcin B is promising for research of COVID-19 .

HY-105148

Mozenavir DMP-450	HIV HIV Protease	Infection
Mozenavir (DMP 450) is an orally active and highly selective inhibitor of HIV-1 protease (K_i=0.3 nM). Mozenavir blocks the cleavage and processing of viral polyproteins, inhibiting the replication and maturation of HIV-1. Mozenavir is promising for research of HIV infection .

HY-P5505

LCMV-derived p13 epitope	Arenavirus	Others
LCMV-derived p13 epitope is a biological active peptide. (An H-2Db restricted epitope, this peptide is amino acids 61 to 80 fragment of the lymphocytic choriomeningitis virus (LCMV) pre-glycoprotein polyprotein GP complex. LCMV has been routinely used for the study of adaptive immune responses to viral infection.)

HY-152222

SPR38	SARS-CoV Cathepsin	Infection
SPR38 is a potent SARS-CoV-2 main protease inhibitor, with a K_i of 0.260 μM. SPR38 also inhibits hCatL and hCatB, with K_i values of 1.92 μM and 11.1 μM, respectively .

HY-N144101

SARS-CoV MPro-IN-2	SARS-CoV	Infection
SARS-CoV MPro-IN-2 (compound 15) is a potent inhibitor of SARS-CoV-2 M ^pro with an IC₅₀ value of 72.07 nM. The main protease (M ^pro) of the virus as the major enzyme processing viral polyproteins contributes to the replication and transcription of SARS-CoV-2 in host cells, and has been characterized as an attractive target in agent discovery. SARS-CoV MPro-IN-2 has the potential for the research of COVID-19 .

HY-159911

SARS-CoV-2 Mpro-IN-29	SARS-CoV Virus Protease
SARS-CoV-2 Mpro-IN-29 (Compound 7) is an inhibitor of the SARS-CoV-2 main protease (Mpro) with an IC₅₀ of 310 nM and an EC₅₀ of 0.5 μM in Vero cells. SARS-CoV-2 Mpro-IN-29 binds to the active site of Mpro, blocking the cleavage of viral polyproteins, showing significant antiviral activity and enhanced metabolic function. SARS-CoV-2 Mpro-IN-29 holds potential for research on SARS-CoV-2 antiviral agents .

HY-78726A

Fosamprenavir sodium Amprenavir phosphate sodium; GW 433908 sodium	Drug Intermediate HIV HIV Protease	Infection
Fosamprenavir sodium is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir sodium is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir sodium can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-78726

Fosamprenavir 4 Publications Verification Amprenavir phosphate; GW 433908	Drug Intermediate HIV HIV Protease	Infection
Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-17431

Fosamprenavir Calcium Salt 4 Publications Verification GW433908G	Drug Intermediate HIV HIV Protease	Infection
Fosamprenavir Calcium Salt (GW433908G) is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir Calcium Salt is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir Calcium Salt can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-78726S

Fosamprenavir-d4 Amprenavir phosphate-d₄; GW 433908-d₄	Isotope-Labeled Compounds Drug Intermediate HIV HIV Protease	Infection
Fosamprenavir-d₄ is the Deuterium-labeled Fosamprenavir (HY-78726). Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-78726S2

Fosamprenavir-13C6 Amprenavir phosphate-¹³C₆; GW 433908-¹³C₆	Isotope-Labeled Compounds Drug Intermediate HIV HIV Protease	Infection
Fosamprenavir- ¹³C₆ is the ¹³C-labeled Fosamprenavir (HY-78726). Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-117747

DMP 323 JCR 424; XM 323	HIV Protease	Infection
DMP 323 is a potent, nonpeptide cyclic urea inhibitor of HIV protease, effective against both HIV type 1 and type 2. Designed using structural information and database searching, it competitively inhibits the cleavage of both peptide and HIV-1 gag polyprotein substrates. DMP 323 shows comparable potency to other highly effective HIV protease inhibitors like A-80987 and Ro-31-8959. Importantly, its efficacy against HIV protease remains unaffected by human plasma or serum, suggesting low affinity for plasma proteins. Furthermore, DMP 323 demonstrates minimal inhibition of various mammalian proteases at concentrations much higher than those needed for HIV protease inhibition, highlighting its specificity for viral targets .

HY-17431R

Fosamprenavir Calcium Salt (Standard) GW433908G (Standard)	Reference Standards Drug Intermediate HIV HIV Protease	Infection
Fosamprenavir Calcium Salt (GW433908G) (Standard) is the analytical standard of Fosamprenavir Calcium Salt (HY-17431R). This product is intended for research and analytical applications. Fosamprenavir Calcium Salt (GW433908G) is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir Calcium Salt is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir Calcium Salt can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-P5415

DABCYL-GABA-Ser-Gln-Asn-Tyr-Pro-Ile-Val-Gln-EDANS	HIV	Others
DABCYL-GABA-Ser-Gln-Asn-Tyr-Pro-Ile-Val-Gln-EDANS is a biological active peptide. (DABCYL-GABA-Ser-Gln-Asn-Tyr-Pro-Ile-Val-Gln-EDANS is also called HIV protease substrate I in some literature. It is widely used for the continuous assay for HIV protease activity. The 11-kD protease (PR) encoded by the human immunodeficiency virus 1 (HIV-1) is essential for the correct processing of viral polyproteins and the maturation of infectious virus, and is therefore a target for the design of selective acquired immunodeficiency syndrome (AIDS) therapeutics. The FRET-based fluorogenic substrate is derived from a natural processing site for HIV-1 PR. Incubation of recombinant HIV-1 PR with the fluorogenic substrate resulted in specific cleavage at the Tyr-Pro bond and a time-dependent increase in fluorescence intensity that is linearly related to the extent of substrate hydrolysis. The fluorescence quantum yields of the HIV-1 PR substrate in the FRET assay increased by 40.0- and 34.4-fold, respectively, per mole of substrate cleaved. Because of its simplicity and precision in the determination of reaction rates required for kinetic analysis, this substrate offers many advantages over the commonly used HPLC or electrophoresis-based assays for peptide substrate hydrolysis by retroviral PRs. Abs/Em = 340nm/490nm.)

Cat. No.	Product Name	Target	Research Area

HY-P5505

LCMV-derived p13 epitope	Arenavirus	Others
LCMV-derived p13 epitope is a biological active peptide. (An H-2Db restricted epitope, this peptide is amino acids 61 to 80 fragment of the lymphocytic choriomeningitis virus (LCMV) pre-glycoprotein polyprotein GP complex. LCMV has been routinely used for the study of adaptive immune responses to viral infection.)

HY-P5415

DABCYL-GABA-Ser-Gln-Asn-Tyr-Pro-Ile-Val-Gln-EDANS	HIV	Others
DABCYL-GABA-Ser-Gln-Asn-Tyr-Pro-Ile-Val-Gln-EDANS is a biological active peptide. (DABCYL-GABA-Ser-Gln-Asn-Tyr-Pro-Ile-Val-Gln-EDANS is also called HIV protease substrate I in some literature. It is widely used for the continuous assay for HIV protease activity. The 11-kD protease (PR) encoded by the human immunodeficiency virus 1 (HIV-1) is essential for the correct processing of viral polyproteins and the maturation of infectious virus, and is therefore a target for the design of selective acquired immunodeficiency syndrome (AIDS) therapeutics. The FRET-based fluorogenic substrate is derived from a natural processing site for HIV-1 PR. Incubation of recombinant HIV-1 PR with the fluorogenic substrate resulted in specific cleavage at the Tyr-Pro bond and a time-dependent increase in fluorescence intensity that is linearly related to the extent of substrate hydrolysis. The fluorescence quantum yields of the HIV-1 PR substrate in the FRET assay increased by 40.0- and 34.4-fold, respectively, per mole of substrate cleaved. Because of its simplicity and precision in the determination of reaction rates required for kinetic analysis, this substrate offers many advantages over the commonly used HPLC or electrophoresis-based assays for peptide substrate hydrolysis by retroviral PRs. Abs/Em = 340nm/490nm.)

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-78726

Fosamprenavir 4 Publications Verification Amprenavir phosphate; GW 433908	Infection Structural Classification Natural Products Classification of Application Fields Source classification Endogenous metabolite Disease Research Fields	Drug Intermediate HIV HIV Protease
Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-17431

Fosamprenavir Calcium Salt 4 Publications Verification GW433908G	Infection Structural Classification Natural Products Classification of Application Fields Source classification Endogenous metabolite Disease Research Fields	Drug Intermediate HIV HIV Protease
Fosamprenavir Calcium Salt (GW433908G) is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir Calcium Salt is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir Calcium Salt can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-N15365

Antcin B	Structural Classification Microorganisms Ketones, Aldehydes, Acids Source classification	Virus Protease SARS-CoV
Antcin B is a SARS-CoV-2 3-chymotrypsin-like protease (3CL Pro) inhibitor. Antcin B binds to multiple key amino acid residues of 3CL Pro(such as Leu141, Asn142, Glu166, His163, etc.) through hydrogen bonds, salt bridges, and hydrophobic interactions, thereby inhibiting the activity of 3CL Pro, blocking the cleavage process of viral polyproteins, and suppressing the replication of the SARS-CoV-2 virus in host cells. Antcin B is promising for research of COVID-19 .

HY-N144101

SARS-CoV MPro-IN-2	Infection Quinones Classification of Application Fields Source classification Plants Lithospermum canescens Lehm. Naphthalene Quinones Disease Research Fields Boraginaceae	SARS-CoV
SARS-CoV MPro-IN-2 (compound 15) is a potent inhibitor of SARS-CoV-2 M ^pro with an IC₅₀ value of 72.07 nM. The main protease (M ^pro) of the virus as the major enzyme processing viral polyproteins contributes to the replication and transcription of SARS-CoV-2 in host cells, and has been characterized as an attractive target in agent discovery. SARS-CoV MPro-IN-2 has the potential for the research of COVID-19 .

HY-17431R

Fosamprenavir Calcium Salt (Standard) GW433908G (Standard)	Structural Classification Natural Products Source classification Endogenous metabolite	Reference Standards Drug Intermediate HIV HIV Protease
Fosamprenavir Calcium Salt (GW433908G) (Standard) is the analytical standard of Fosamprenavir Calcium Salt (HY-17431R). This product is intended for research and analytical applications. Fosamprenavir Calcium Salt (GW433908G) is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir Calcium Salt is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir Calcium Salt can be used for the study of human immunodeficiency virus (HIV-1) infection .

Cat. No.	Compare	Product Name	Species	Source

HY-P703547

	HCVNS5B Protein, HCV Genome polyprotein; Hepatitis C virus genotype 1b (strain HC-J4); HCV; p23; Helicase; Hydrolase; Ion channel; Multifunctional enzyme; Nucleotidyltransferase; Protease; Ribonucleoprotein; RNA-binding; RNA-directed RNA polymerase; Serine protease; Thiol protease; Transferase; viral ion channel; viral nucleoprotein	Others	E. coli
	POLG proteins play multiple roles in the viral life cycle, contributing to viral RNA packaging, budding, and particle production. It exhibits RNA-binding and RNA chaperone activities, affecting translation initiation through interactions with viral IRES and ribosomal subunits. HCVNS5B Protein, HCV is the recombinant HCVNS5B, expressed by E. coli, with tag Free labeled tag.

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Cat. No.	Product Name	Chemical Structure

HY-78726S

Fosamprenavir-d4
Fosamprenavir-d₄ is the Deuterium-labeled Fosamprenavir (HY-78726). Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

Fosamprenavir-d4

Fosamprenavir-d₄ is the Deuterium-labeled Fosamprenavir (HY-78726). Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

HY-78726S2

Fosamprenavir-13C6
Fosamprenavir- ¹³C₆ is the ¹³C-labeled Fosamprenavir (HY-78726). Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

Fosamprenavir-13C6

Fosamprenavir- ¹³C₆ is the ¹³C-labeled Fosamprenavir (HY-78726). Fosamprenavir is an orally active inhibitor targeting HIV-1 protease and is a prodrug of Amprenavir (HY-17430). Fosamprenavir is hydrolyzed into Amprenavir (VX-478) by cell phosphatases in the intestinal epithelium. Amprenavir binds to the active site of HIV-1 protease, preventing the processing of viral gag and gag-pol polyprotein precursors, thereby inhibiting the formation of mature infectious virus particles and exerting anti-HIV-1 infection activity. Fosamprenavir can be used for the study of human immunodeficiency virus (HIV-1) infection .

Cat. No.	Product Name		Classification

HY-19476

AG-7404		Alkynes
AG-7404 is an orally active, irreversible inhibitor of the picornavirus 3C protease. AG-7404 blocks the processing of viral polyproteins, thereby inhibiting viral replication. AG-7404 has synergistic antiviral activity with capsid inhibitors such as V-073 (HY-104074) or BTA798 (HY-106254) and is effective against V-073-resistant variants. AG-7404 is used in the study of enterovirus infections such as poliovirus .

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