Purines and Pyrimidine Derivatives

<p>Applications (R)-9-[2-(Hydroxypropyl] Adenine (Desphosphoryl Tenofovir) (cas# 14047-28-0) is a useful reagent for preparing the antiviral drug tenofovir.<br>References Dietz, J.-P., et al.: ChemRxiv, 1 (2020)<br></p>

<p>Stability Hygroscopic<br>Applications Tenofovir (T018500) impurity.<br></p>

<p>Applications A fluorescent analog of Nicotinamide Adenine Dinucleotide as a coenzyme for glutamate dehydrogenase.<br>References Gafni, A., et al.: Biochemistry, 20, 6041 (1981), Creedon, K., et al.: J. Biol. Chem., 269, 16364 (1994), Seley, K., et al.: Bioorg. Med. Chem., 6, 797 (1998),<br></p>

<p>Applications Lablled Caffeine (C080100). Caffeine is a bitter, white crystalline xanthine alkaloid that acts as a stimulant drug and a reversible acetylcholinesterase inhibitor. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants. In humans, caffeine acts as a central nervous system stimulant, temporarily warding off drowsiness and restoring alertness. Caffeine is a cardiac and respiratory stimulant; diuretic. Caffeine is toxic at sufficiently high doses.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Zubair, U.M., et al.: Anal. Profiles Drug Subs., 15, 71 (1986); Cherrah, Y., et al.: Biochem. Pharmacol., 37, 1311 (1988);<br></p>

<p>Applications 1-Bromo-3,5-dimethyladamantane (cas# 941-37-7) is a compound useful in organic synthesis.<br></p>

<p>Applications Labelled Febuxostat (F229000). Xanthine oxidase/xanthine dehydrogenase inhibitor. Used for treatment of hyperuricemia and chronic gout.<br>References Osada, Y., et al.: Eur. J. Pharmacol., 241, 183 (1993), Okamoto, K., et al.: J. Biol. Chem., 278, 1848 (2003), Mayer, M.D., et al.: Am. J. Therap., 12, 22 (2005), Tomlinson, B., et al.: Curr. Opin. Invest. Drugs, 6, 1168 (2005),<br></p>

<p>Applications 8-Descarboxamido-8-cyano Temozolomide is a useful synthetic intermediate in the synthesis of Temozolomide (T017775); an imidazotetrazine alkylating agent and antineoplastic.<br>References Newlands, E.S., et al.: Cancer Treat. Rev., 23, 35 (1997); Kim, C., et al.: J. Biol. Chem., 274, 1233 (1999); Hait, W., et al.: Cancer Res., 69, 1263 (2009); Wang, Y., et al.: J. Org. Chem., 62, 7288 (1997)<br></p>

<p>Applications Used in the preparation of new 2,5-pyridinedicarboxylic acids derivatives as antiviral agents.<br>References Pocker, Y., et al.: Biochemistry, 19, 2045 (1980), Flint, D., et al.: J. Biol. Chem., 268, 22369 (1993),<br></p>

<p>Stability Hygroscopic<br>Applications Labelled Paraquat Dichloride, a commonly used heribicide. Paraquat Dichloride is a fast-acting and non-selective viologen derivative that kills green plant tissue on contact. Studies suggest that there might be a possible link between Paraquat Dichloride and the development of Parkinson’s disease.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Heylings, J.R. et al.: Toxicology, 241, 1 (2007); Wibawa, W. et al.: Int. J. Agric. Biol., 11, 145 (2009); Franco, R. et al.: Chem.-Biol. Inter., 188, 289 (2010);<br></p>

<p>Applications A labelled metabolite of Theophylline.<br>References ottrup, A., et al.: Pharmacol. Toxicol., 67, 340 (1990), El-Kadi, A., et al.: Drug Metab. Dispos., 28, 1112 (2000), Kim, S., et al.: J. Med. Chem., 45, 2131 ( 2002), Hansel, T., et al.: Drugs Today, 40, 55 (2004),<br></p>