Antivirals

PS 3061 is a type of biostimulant, which is derived from activated charcoal. Activated charcoal serves as the source of this biostimulant, providing a unique substrate that interacts with soil and plant roots. Its mode of action involves enhancing nutrient uptake and improving soil microbial activity, thereby facilitating better plant growth and development. The primary use of PS 3061 lies in agriculture and horticulture, where it can be applied to various crops to increase yield and improve plant health. By optimizing nutrient availability and fostering a more robust rhizospheric environment, this biostimulant aids in overcoming abiotic stress factors, ultimately leading to enhanced resilience and productivity of plants. As a tool for scientists and agronomists, PS 3061 represents a sophisticated approach to sustainable crop management and innovative agronomic practices.

Stability Very Hygroscopic Applications Tri-POC Tenofovir Dimer is a dimer of Tenofovir Disoproxil (T018505), an acyclic phosphonate nucleotide analogue; reverse transcriptase inhibitor. Used as an anti-HIV agent. Antiviral. It is also used in the preparation of phosphocitrate for the treatment of rheumatoid and osteoarthritis in the elderly. References Turhanen, P. et al.: J. Org. Chem., 72, 1468 (2007);

Applications N-[(S)-(4-Nitrophenoxy)phenoxyphosphinyl]-L-alanine 1-Methylethyl Ester 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)

Applications Lopinavir O-Sulfate is a metabolite of Lopinavir (L469480); a selective HIV protease inhibitor and antiviral. It is a COVID19-related research product. References Sham, H.L., et al.: Antimicrob. Ag. Chemother., 42, 3218 (1998); Kumar, G.N., et al.: Drug Metab. Dispos., 27, 86 (1999); Murphy, R.L., et al.: Antiviral Ther., 4, Suppl. 3, 85 (1999)

Applications Umifenovir is an intermediate in synthesizing Arbidol Sulfoxide (A766005), a metabolite of Arbidol (A766000) which is a medicinal agent for treating viral infections. References Chiou, W., et al.: J. Pharm. Sci., 60, 1281 (1971), Ford, J., et al.: J. Pharm. Pharmacol., 31, 726 (1979), Tamblyn, S., et al.: Eur. J. Epidemiol., 10, 503 (1994), Suzuki, H., et al.: Chem. Pharm. Bull., 45, 1688 (1997),