Miscellaneous Organic Molecules with Isotopical Substitutions

Ligustilide and senkyunolide A, two of the most abundant Ligusticum chuanxiong constituents, have vasorelaxation activities in contractions to various contractile agents in rat isolated aorta.

Lycopene is the pigment principally responsible for the characteristic deep-red color of ripe tomato fruits and tomato products. Lycopene is an antioxidant scavenger, hypolipaemic agent, inhibitor of pro-inflammatory and pro-thrombotic factors, thus potentially of benefit in cardiovascular disease (CVD). Lycopene may play a role in the prevention of Renal cell carcinoma, it also may play a role against obesity-related complications.

Nomilin has immunomodulatory, antioxidant, anti-human immunodeficiency virus(HIV), cancer chemopreventive, antiangiogenic, anti-obesity and anti-hyperglycemic effects. Nomilin inhibits tumor-specific angiogenesis by downregulating VEGF, NO and proinflammatory cytokine profile and also by inhibiting the activation of MMP-2 and MMP-9. It inhibits osteoclastogenesis in vitro by suppression of NFATc1 and MAPK signaling pathways, indicates that nomilin-containing herbal preparations have potential utility for the prevention of bone metabolic diseases.

Reference standards.

Lobetyolin has a protective role in gastric mucosa injury,and the mechanism may be relate to the increase in level of 6-K-PGF1αand the inhibition the excretion of gastric acid and EGF.

<p>Stability Light Sensitive, Temperature Sensitive<br>Applications Labelled 9-cis Retinol Acetate (R252100). Retinal derivative for treatment of visual disorders. Vitamin A derivative.<br>References Ruiz, A., et al.: J. Biol. Chem., 274, 3834 (1999), van Hooser, J., et al.: J. Biol. Chem., 277, 19173 (2002), Haeseleer, F., et al.: J. Biol. Chem., 277, 45537 (2002).<br></p>

<p>Applications Labelled R-Ketoprofen (K200806). Anti-inflammatory; analgesic.<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 Ueno, K., et al.: J. Med. Chem., 19, 941 (1976), Liversidge, G.G., Anal. Profiles Drug Subs., 10, 443 (1981), Jamali, F., et al.: Clin. Pharmacokinet., 19, 197 (1990),<br></p>

<p>Applications Ethyl Acetoacetate-13C4 is the isotope labelled analog of Ethyl Acetoacetate, an chemical intermediate used in the production of various analgesics, antibiotics and antimalarial agents.<br>References Mutti, F.G., et al.: Adv. Syn. Cata., 354, 3409 (2012); Subudhi, B., et al.: Bull. Chem. Soc., Ethiopia., 26, 455 (2012);<br></p>

<p>Stability Hygroscopic<br>Applications Labelled (-)-Epigallocatechin Gallate, a tumor-inhibiting constituent of green tea. (-)-Epigallocatechin Gallate alters the cleavage of amyloid precursor protein, decreasing production of amaloid-ß and amaloid plaques in mice.<br>References Yamane, T. et al.: Cancer Res., 55, 2081 (1995); Tan, J. et al.: J. Neurosci. 25, 8807 (2005);<br></p>

<p>Applications Fenuron-d5 (phenyl-d5) (CAS# 1219802-06-8) is a useful isotopically labeled research compound. It can be used for the preparation of difunctionalized indoles.<br>References Lv, H., et al.: Org. Biomol. Chem., 15, 8054 (2017)<br></p>

<p>Applications Labelled rac-Nicotine (N412420). Nicotine is an alkaloid isolated from plants. Nicotine is an active stimulant, having both addictive and carcinogenic properties. Nicotine can be absorbed through the alimentary canal, respiratory tract and intact skin. Nicotine is used in the treatment of smoking withdrawal syndrome. Nicotine has been used as an anthelmintic.<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 Ferretti, G., et al.: J. Med. Chem., 45, 4724 (2002), Guillen, M., et al.: J. Agric. Food Chem., 53, 1093 (2005), Ramunno, A., et al.: Bioorg. Med. Chem. Lett., 15, 3237 (2005), Alburges, M., et al.: Eur. J. Pharmacol., 573, 124 (2007),<br></p>

<p>Applications A component of garlic which revealed antiplatelet, antithrombotic activity and reduced LDL oxidation thus indicating their possible use for cardiovascular disease.<br>References Steinberg, D., et al.: J. Biol. Chem., 272, 20963 (1997), Lawson, L., et al.: J. Agric. Food Chem., 53, 6254 (2005), Gonen, A., et al.: Pathobiology, 72, 325 (2005),<br></p>

<p>Stability Very Volatile<br>Applications Isotope labelled N-Nitrosodimethylamine is a highly toxic semi-volatile organic compound and a suspected human carcinogen. It induces liver tumors in rats after chronic exposure to low doses (1,2). Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants.<br>Dangerous Goods Info This compound is forbidden to ship by air under IATA regulations.<br>References 1. Peto, R. et al.: Cancer Res.1991 Dec 1;51(23 Pt 2):6415-51.2. Lee, ES. et al.: J. Pharm. Pharmacol., 2003 Aug;55(8):1169-74<br></p>

<p>Applications Active antimalarial constituent of the tradional Chinese medicinal herb Artemisia annua L., Compositae, which has been known for almost 2000 years as Qinghao. Antimalarial.<br>References Klayman, D.L., et al.: Science, 228, 1049 (1985), Price, R.N., et al.: Expert Opin. Invest. Drugs, 9, 1815 (2000), Meshnick, S.R., et al.: Int. J., Parasitol., 32, 1655 (2002),<br></p>

<p>Applications 2-Chloroethanol is used in the preparation of TTFTT (tetrathiafulvalene-2,3,6,7-tetrathiolate) and important building block in TTF syntheis. In addition, it is used in the synthesis of vinyltriazoles. This is the labeled analog.<br>Dangerous Goods Info This compound is forbidden to ship by air under IATA regulations.<br>References Svenstrup, N. et al.: Synthesis, 8, 809 (1994); Thibault, R. et al.: J. Am. Chem. Soc., 128, 12084 (2006);<br></p>

<p>Stability Unstable in Solution<br>Applications The main labelled metabolite of Artemisinin, Arteether, Artemether, Artesunate. An active antimalarial metabolite.<br>References e Vries, P., et al.: Drugs, 52, 818 (1996), Kamolrat, S., et al.: Antimicrob. Agents Chemother., 47, 3795 (2003), Mithwani, S., et al.: Br. J. Clin. Pharmacol., 57, 146 (2004),<br></p>

<p>Applications N-Methyl-d3-N-nitroso-p-toluenesulfonamide is the labeled version of Diazald; Diazomethane precursor.<br>References Takizawa, et al.: J. Pharm. Soc. Jpn., 70, 490 (1950)<br></p>