Antivirali

Rupintrivir is a peptidomimetic antiviral with action on rhinovirus 3C protease to inhibit viral replication and is used for research on rhinovirus and other viral infections.

Nucleoside reverse transcriptase inhibitor; anti-Hepatitis B virus

Anti-viral; HIV protease inhibitor

Ombitasvir is a NS5A inhibitor antiviral agent with action on hepatitis C virus replication and is used for treating chronic hepatitis C in combination therapies.

Inhibitor of viral neuraminidase enzyme, effective against influenza A and B viruses. This antiviral compound inhibits neuraminidase-mediated cleavage of host cell sialic acids, which interact with newly synthesised virions from the host cell. This prevents virion budding from the host, resulting in inhibition of virion release and viral infection overall.

Anti-viral; inhibitor of cytomegalovirus-terminase complex

N-Boc-protected -Guanidino Oseltamivir is a fine chemical that belongs to the group of versatile building blocks. It is a complex compound that has been used in research as a reagent and speciality chemical. N-Boc-protected -Guanidino Oseltamivir is an important intermediate for the synthesis of a variety of useful compounds, such as pharmaceuticals and natural products. This compound is also used as a reaction component in organic syntheses, especially for the preparation of high quality and useful scaffolds.

Anti-viral; NS3/4A protease inhibitor

Dapivirine is a non-nucleoside reverse transcriptase inhibitor with action on HIV-1 reverse transcriptase and is used for preventing HIV infection through vaginal rings.

Tenofovir is an acyclic nucleoside phosphonate that exhibits anti-viral properties through its inhibition of reverse transcriptases. In particular, Tenofovir is a potent inhibitor of Human Immunodeficiency Virus (HIV) and chronic Hepatitis B Virus (HBV) reverse transcriptases, thus preventing the replication of genetic viral material. This property is beneficial in virus research areas and developing antiviral treatments. Once inside the body tenofovir is metabolized into its active form, tenofovir diphosphate, by the lysosomal protease cathepsin A, nucleotide kinases and adenylate kinases. 
Tenofovir is part of our Bio-X ™ Range. These products are aimed at life science researchers who need high quality ready to use products for assay development, screening or other R&D work. With a solubility datasheet and convenient vials, all of our Bio-X ™ products are in stock across our global warehouses for rapid delivery and ease of use.

Viramidine is a nucleotide analogue prodrug, which is derived from naturally occurring nucleosides, specifically optimized for enhanced therapeutic profiles. Its mode of action involves conversion into ribavirin triphosphate within the body. This active form inhibits viral RNA polymerase, a critical enzyme necessary for viral replication. By disrupting the synthesis of viral RNA, Viramidine effectively reduces viral proliferation within host cells.

Non-nucleoside reverse transcriptase inhibitor; antiviral agent against HIV

Stavudine is an antiviral, reverse transcriptase inhibitor that is used to treat HIV/AIDS. It belongs to the group of nucleoside analogues of thymidine that is converted into stavudine monophosphate. Stavudine works by inhibiting viral replication by preventing the incorporation of viral dNTPs into the growing DNA chain, thus blocking DNA synthesis.

Ritonavir is a HIV protease inhibitor. It has an anti-retroviral activity as it inhibits the protease enzymes specific of both HIV-1 and HIV-2 and has been shown to be effective in controlling virus replication in humans and animals. Ritonavir works by preventing the HIV viral protease enzyme from cleaving the structural and replicative proteins produced by HIV genes such as gag and pol.

Anti-viral; thymidine analogue; DNA plymerase inhibitor

Inhibitor of HIV-1 integrase strand transfer; antiviral

Atazanavir is an antiviral protease inhibitor, used in the anti-retroviral therapy of adult and sometimes paediatric patients infected with HIV. This drug inhibits the processing of viral Gag and Gag-pol polyproteins in HIV-1 infected cells by binding to the HIV-1 protease active site.

Non-nucleoside inhibitor of reverse transcriptase; anti-viral

HIV-1 Integrase Inhibitor is an antiretroviral compound with a mode of action that blocks the viral enzyme integrase, preventing the integration of viral DNA into the host genome. It is used for the treatment of HIV infection.

Darunavir is a HIV-1 protease inhibitor used orally in the treatment of patients with multi-drug resistant HIV-1 infection (Ghosh, 2007). It has also been shown to be effective against other infectious diseases such as hepatitis C virus and SARS coronavirus. Metabolized by cytochrome P450 3A (CYP3A) isoenzymes, darunavir is often administered together with ritonavir that prolongs its bioavaiability, giving a terminal elimination half-life (t1/2) of 15 hours (Back, 2008). The effect of darunavir on natural compounds such as matrix proteins and toll-like receptor activity has also been studied via high performance liquid chromatography (HPLC) experiments.

Abacavir sulfate is an antiviral drug that belongs to the class of HIV protease inhibitors. It is used in combination with other antiretroviral drugs to treat HIV-1 infection. Abacavir sulfate inhibits viral replication by blocking the activity of HIV-1 protease, which is necessary for the production of new virus particles.
Abacavir sulfate is part of our Bio-X ™ Range. These products are aimed at life science researchers who need high quality ready to use products for assay development, screening or other R&D work. With a solubility datasheet and convenient vials, all of our Bio-X ™ products are in stock across our global warehouses for rapid delivery and ease of use.

Raltegravir is an antiretroviral agent, which is a synthetic integrase inhibitor sourced from pharmaceutical research. Its mode of action involves the inhibition of the HIV-1 integrase enzyme, which is essential for the viral replication process. By blocking the strand transfer step of the integration of viral DNA into the host cell genome, Raltegravir prevents the proliferation of the virus within the host.

Atazanavir is a HIV-1 protease inhibitor, used in the anti-retroviral therapy of adult and sometimes paediatric patients infected with HIV. In in vitro studies with human pulmonary epithelial cells, atazanavir has been studied as a potential inhibitor of SARS-CoV-2 Mpro protease, with the aim of halting viral replication.

Penciclovir is an antiviral agent and acyclic guanine derivative that has proven efficient in the treatment of Herpes Simplex type 1 and 2 (HSV1 and HSV2) infection. Penciclovir is transformed by the virus into an active derivative able to block the deoxyguanosine triphosphate substrate binding site of the HSV polymerase.

GS 5734, also known as remdesivir is a nucleoside prodrug with broad spectrum antiviral activity against RNA viruses. As remdesivir / GS 5734 is a prodrug, it requires to be triphosphorylated by cellular kinases in order to compete with ATP for incorporation in newly replicated viral RNA. A major benefit of remdesivir in comparison with other antiviral nucleoside analogs is its resistance to proofreading exonucleases, which occur in coronaviruses. This means remdesivir can overcome the repair mechanism and preserve its antiviral activity. Remdesivir was reported to have a therapeutic as well as prophylactic efficacy in a mouse model infected with SARS-CoV-1.

Antiviral; nonpeptidic HIV-1 protease inhibitor

Applications T-705RMP TEA Salt is a metabolite of T-705RMP (CAS# 356783-08-9), which is a reagent used for the preparation of pyrazine-ribofuranose derivatives as antiviral agents that are useful in the treatment of viral infections. T-705 (Favipiravir) [F103350] gets converted to T-705RMP by host cells, but T-705RMP has little inhibitory effect on the replication of the host cells based on biological studies.
References Zhong, B., et al.: Faming Zhuanli Shenqing, 2014:924257 (2014); Yousuke, F., et al.: Antimicrob Agent Chemother., 49, 981 (2005)

Applications Used in the synthesis of enantioselective synthesis of carbocyclic ribavirin, its analogs and other antiviral agents.
References Kuang, R. et al.; Tetrahedron Lett. 41, 9575 (2000)

Applications (S)-(5S,6S,8S)-5,8-Dibenzyl-12,12-dimethyl-3,10-dioxo-1-(thiazol-5-yl)-2,11-dioxa-4,9-diazatridecan-6-yl 2-(3-((2-Isopropylthiazol-4-yl)methyl)-3-methylureido)-3-methylbutanoate is an protected prodrug of Ritonavir (R535000), which is a selective HIV protease inhibitor.

Applications 2-Hydroxy-2-methylpropanethioamide is an thioamide compound integrated as an constituent in the synthesis of Ritonavir (R535000) and its derivatives.

Applications (R)-(((1-(6-Amino-9H-purin-9-yl)propan-2-yl)oxy)methyl)phosphonic Acid Methyl Ester Trimethylamine is an intermediate in the synthesis of Tenofovir (T018500), is an acyclic phosphonate nucleotide analogue.
References Peng, J., et al.: J. Clin. Pharmacol., 46, 265 (2006), Seminari, E., et al.: J. Antimicrob. Chemother., 60, 831 (2007),

Applications (S)-2-(3-((2-(2-Hydroxypropan-2-yl)thiazol-4-yl)methyl)-3-methylureido)-3-methylbutanoic Acid Methyl Ester is an intermediate in the synthesis of Ritonavir (R535000) derivatives.

Applications Intermediate in the preparation of Ribavirin.

Applications 1-[2-O-(Phenoxythioxomethyl)-3,5-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-β-D-ribofuranosyl]-1H-1,2,4-triazole-3-carboxamide is an intermediate in the synthesis of 2’-Deoxyribavirin-5’-triphosphate (D2149940) Triethylamine Salt, a potential new inhibitor for HIV-1 replication.
References Vivet-Boudou, V., et al.: Nucleos. Nucleot. Nucl., 26, 743 (2007);

Applications (S)-2-(3-((2-(2-Hydroxypropan-2-yl)thiazol-4-yl)methyl)-3-methylureido)-3-methylbutanoic Acid is an intermediate in the synthesis of Ritonavir (R535000) derivatives.

Applications A highly reactive thiol-specific spin-label. A specific conformational probe of thiol site structure by virtue of its minimal rotational freedom and distance from the covalent disulfide linkage to the macromolecule under study.

Applications 1-[2-Deoxy-3,5-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-β-D-erythro-pentofuranosyl]-1H-1,2,4-triazole-3-carboxamide is an intermediate in the synthesis of 2’-Deoxyribavirin-5’-triphosphate (D2149940) Triethylamine Salt, a potential new inhibitor for HIV-1 replication.
References Vivet-Boudou, V., et al.: Nucleos. Nucleot. Nucl., 26, 743 (2007);

Applications Intermediate in the preparation of α-Ribavirin.

Applications (S)-Isopropyl 2-(((R)-(((2R,3R,4R,5R)-3-((tert-Butyldimethylsilyl)oxy)-5-(2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-4-fluoro-4-methyltetrahydrofuran-2-yl)methoxy)(phenoxy)phosphoryl)amino)propanoate is an intermediate in the synthesis of Sofosbuvir (R)-Phosphate (S675615), which is an impurity of PSI-7977 (P839640), a prodrug that is metabolized to the active antiviral agent 2'-deoxy-2'-α-fluoro-β-C-methyluridine-5'-monophosphate and is currently being investigated in phase 3 clinical trials for the treatment of hepatitis C. Studies have profiled PSI-7977 as a nucleotide inhibitor of hepatitis C virus, exerting selective inhibitory effects towards HCV NS5B polymerase.
References Lam, A.M.,et al.: Antimicrob. Agents. Chemotherapy., 56, 3359 (2012); Lam, A.M., et al.: J. Virol., 85, 12334 (2011); Sofia, M.J., et al.: J. Medn. Chem., 53, 7202 (2010)

Tenofovir diphosphate is an antiviral compound, which is a key active metabolite derived from the prodrugs tenofovir disoproxil fumarate and tenofovir alafenamide, both originating from chemical synthesis. Its mode of action involves inhibiting the activity of HIV-1 reverse transcriptase by competing with the natural substrate, deoxyadenosine 5’-triphosphate, and causing chain termination after incorporation into viral DNA. This mechanism effectively prevents the replication of retroviral DNA, thus halting the progression of the infection.

Applications 3,4-Difluoroaniline-2,6-d2 (CAS# 1061566-62-8) can be used in its derivative form as an antiviral agent for Hepatitis B.
References Qiu, Y.L., et.al., U.S. Pat. Appl. Publ., 187,(2019);

Stability Hygroscopic
Applications (2'R)​-2'-​Deoxy-​2'-​fluoro-​2'-​methyl-uridine 5'-​Triphosphate Tetrasodium Salt is an impurity of Sofosbuvir (P839640) which is a prodrug that is metabolized to the active antiviral agent 2'-deoxy-2'-α-fluoro-β-C-methyluridine-5'-monophosphate.
References Lam, A.M.,et al.: Antimicrob. Agents. Chemotherapy., 56, 3359 (2012); Lam, A.M., et al.: J. Virol., 85, 12334 (2011); Sofia, M.J., et al.: J. Medn. Chem., 53, 7202 (2010);

Applications An intermediate used in the preparation of Zanamivir derivatives.
References Andrews, D., et al.: Eur. J. Med. Chem., 34, 563 (1999), Altamore, T., et al.: Bioorg. Med. Chem., 14, 1126 (2006),

Impurity Nelfinavir Sulphone Impurity
Applications Nelfinavir Sulfone is an impurity of Nelfinavir Mesylate (N389750). It is a COVID19-related research product.
References Aymard, G., et al.: J. Chromatogr. B, 744, 227 (2000), Jing, Q., et al.: J. Pharm. Biomed. Anal., 41, 1065 (2006),

Impurity Ribavirin EP Impurity C
Applications 1,2,4-Triazole-3-carboxylic Acid (Ribavirin EP Impurity C) is a major metabolite of the antiviral agent Ribavirin (R414475).
References Miller, J.P. et al.: Ann. N.Y. Acad. Sci., 284, 211 (1977); Catlin, D. et al.: Ribavirin: Broad Spec. Antivir. Ag., 83 (1980); Lin, C.C. et al.: Antimicrob. Ag. Chemother., 50, 2368 (2006);

Applications Levovirin is a monocyclic L-nucleosides with type 1 cytokine-inducing activity. Levovirin is the L-enantiomer of Ribavirin (R414475) with similar immunomodulatory activity but does not have direct antiviral activity or hemolytic anemia.
References Ramasamy, K.S. et al.: J. Med. Chem., 43, 1019 (2000); Fang, C. et al.: J. Appl. Toxicol., 23, 453 (2003):

Applications R 77975 is used to modulate lipophilicity in human rhinovirus capsid binders. It also is used in order to identify potential ativiral agents.
References Morley, A. et al.: Bioorg. Med. Chem. Lett., 21, 6031 (2011); Tomkinson, N. et al.: Bioorg. Med. Chem. Lett., 22, 7494 (2012);

Applications An intermediate in the synthesis of Ritonavir.
References Sham, H., et al.: Bioorg. Med. Chem. Lett., 12, 3101 (2002),

Impurity Atazanavir Impurity B
Applications An intermediate for the preparation of antiviral protease inhibitors. Atazanavir Impurity B
References Fassler, A., et al.: J. Med. Chem., 39, 3203 (1996), Bold, G., et al.: J. Med. Chem., 41, 3387 (1998).

Applications Darunavir intermediate.
References Ghosh, A., et al.: J. Med. Chem., 39, 3278 (1996), Ghosh, A., et al.: Bioorg. Med. Chem. Lett., 1998, 8, 687 (1998), Richman, D., et al.: Nature, 410, 995 (2001), Koh, Y., et al.: Antimicrob. Agents Chemother., 47, 3123 (2003),

Applications Darunavir intermediate.
References Ghosh, A., et al.: J. Med. Chem., 39, 3278 (1996), Ghosh, A., et al.: Bioorg. Med. Chem. Lett., 1998, 8, 687 (1998), Richman, D., et al.: Nature, 410, 995 (2001), Koh, Y., et al.: Antimicrob. Agents Chemother., 47, 3123 (2003),

Applications Stavudine-alpha,alpha,alpha,6-d4 (CAS# 1219803-67-4) is a useful isotopically labeled research compound.

Applications 5,6,7,8-Tetrahydro-1-naphthalenol was used as a reagent in the synthesis of phosphonamidate and phosphonodiamidate prodrugs of adefovir and tenofovir which are used in the treatment of HIV infections. Also used in the synthesis of tetrahydronaphthalene-1-ol derivatives which were found to be promising potent antitumor agents.
References Pertusati, F., et al.: Eur. J. Med. Chem., 78, 259 (2014); Dong, Y., et al.: Bioorg. Med. Chem. Lett., 19, 6289 (2009);

Applications 2'-Fluoro-2'-deoxyuridine-5,6-d2 (CAS# 362049-50-1) is a useful isotopically labeled research compound.

Impurity Atazanavir Impurity (Pyridinyl Benzaldehyde)
Applications Reactive metabolite of atazanavir. Atazanavir Impurity; Pyridinyl Benzaldehyde impurity
References F. Li et al., Drug Metabolism and Disposition 39, 294 (2011)