Derivados de Purinas e Pirimidinas

<p>Applications Methotrexate-Cadaverine-Biotin Conjugate is biotin labelled Methotrexate. Methotrexate (M260675) is a folic acid antagonist and it is used as a antineoplastic and antirheumatic.<br>References Freeman, M.V., J. Pharmacol. Exp. Ther., 122, 154 (1958), Weinblass, M.E., et al.: N. Engl. J. Med., 312, 818 (1985),<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 Intermediate in the production of Methotrexate<br>References Chiosis, G., et al.: Bioorg. Med. Chem., 10, 3555 (2002), Palanki, M., et al.: J. Med. Chem., 50, 4279 (2007), Zav'yalov, S., et al.: Pharm. Chem. J., 42, 51 (2008),<br></p>

<p>Applications Febuxostat-d7, is the labeled analogue of Febuxostat-d7 (F229000), a 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 Intermediate in the preparation of Pemetrexed.<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 An intermediate in the biosynthesis of Heme, found in the urine of patients with acute porphyria.<br>References Westall, et al.: Nature, 170, 614 (1952), Cookson, R., et al.: Biochem, J., 57, 476 (1954), MacDonald, J., Can. J. Chem., 35, 715 (1957),<br></p>

<p>Applications N6-(2-Isopentenyl)adenine can be used in biological study for cytokinins stimulated expression of stress-related proteins and transcripts in Arabidopsis thaliana with isopentenyltransferase overexpression.<br>References Skalak, J., et al.: J. Exp. Bot., 67, 2861-2873 (2016)<br></p>

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

<p>Applications Tenofovir Alafenamide Fumarate is a prodrug of Tenofovir (T018500), which is a reverse transcriptase inhibitor used to treat HIV and Hepatitis B. Antiviral.<br>References Shaw, J.-P., et al.: Pharm. Res., 14, 1824 (1997), Wyles, D., et al.: Clin Infect. Dis., 40, 174 (2005), Peng, J., et al.: J. Clin. Pharmacol., 46, 265 (2006), Seminari, E., et al.: J. Antimicrob. Chemother., 60, 831 (2007),<br></p>

<p>Impurity Pemetrexed EP Impurity A<br>Applications N-Methyl Pemetrexed (Pemetrexed EP Impurity A) is an impurity of Pemetrexed (P219500), an multitargeted antifolate that inhibits thymidylate synthase as well as other folate dependent enzymes.<br>References Kjell, D.P., et al.: Org. Proc. Res. Develop., 9, 738 (2005);<br></p>