Toxicology

<p>Applications N-Desmethyl Sorafenib (Pyridine)-N-oxide is a metabolite of Sorafenib (S676850) and has anti-proliferative activity in human breast cancer cells.<br>References Tolcher, A.W., et al.: Cancer Chemoth. Pharm., 67, 751 (2011); Cui, P.H., et al.: Biochem. Pharmacol., 86, 419 (2013); Ghassabian, S., et al.: Biochem. Pharmacol., 84, 215 (2012)<br></p>

<p>Applications Labelled 2-Furfurylthiol Acetate (F864600). 2-Furfurylthiol Acetate is a sulfur-substituted furan derivative used as flavouring agent. 2-Furfurylthiol Acetate is a precursor to furfurylmercaptan which is very prone to oxidation to the disulfide. We will provide a detailed procedure for the preparation of the thiol from the thioacetate with spectral data upon request.<br>References Engel, K., et al.: J. Agric. Food Chem., 39, 2249 (1991), Jones, M., et al.: J. Exp. Bot., 55, 1903 (2004), Gershater, M., et al.: J. Biol. Chem., 282, 21460 (2007),<br></p>

<p>Applications Loratadine (L469575) Impurity. An isomer of N-Methyl Desloratadine (M316500).<br>References Zhong, D., et al.: Pharmazie, 49, 736 (1994); Ruperez, F., et al.: J. Pharm. Biomed. Anal., 29, 35 (2002);<br></p>

<p>Applications 1-(2-Chlorophenyl)hydrazine Hyrochloride is the salt form of 1-(2-Chlorophenyl)hydrazine (C375525); a useful research reagent used in the preparation of halogen-substituted phenylhydrazine derivatives with antifungal properties.<br>References Usui, Y., et al.: Yakugaku Zasshi, 87, 43 (1967)<br></p>

<p>Applications Dinocap is an acaricide and pesticide.<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></p>

<p>Applications Hecogenin Acetate, is a derivative of Hecogenin (H129945), which is a sapogenin present in the leaves of species from the Agave genus, possessing wide spectrum of pharmacology activities, such as having antinociceptive properties.<br>References Gama, K. B., et al.: J. Natural Prod., 76, 559 (2013);<br></p>

<p>Applications Metsulfuron is a powerful herbicide used in the control of pests and protection of crops and produce.<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 Anderson, J. et al.: J. Agric. Food Chem., 37, 1429 (1989); Ivany, J. et al.: Can. J. Plant Sci., 67, 1083 (1987);<br></p>

<p>Applications 3,5-Dibromo-4-hydroxybenzonitrile-2,6-d2 (CAS# 1219798-95-4) is a useful isotopically labeled research compound.<br></p>

<p>Applications 1-(4-(Aminomethyl)naphthalen-1-yl)-N,N-dimethylmethanamine is a potential impurity of Naftifine (N213100), an antimycotic allylamine. An antifungal (topical) agent.<br>References Georgopoulos, A., et al.: Antimicrob. Ag. Chemother., 19, 386 (1981), Meingassner, J.C., et al.: J. Invest. Dermatol., 77, 444 (1981), Paltauf, F., et al.: Biochim Biophys. Acta, 712, 268 (1982), Aggarwal, D., et al.: J. Pharm. Pharmacol., 56, 1509 (2004),<br></p>

<p>Applications Endothion is an insecticide. A hazardous material.<br>References Faris, F., et al.: Agric. Res. Rev., 48, 71 (1970), Anon.: Dangerous Prop. of Ind. Mater. Rep., 13, 527 (1993), Mortensen, S. R., et al.: Toxicology of Organophosphate and Carbamate Compounds, 673 (2006),<br></p>

<p>Applications PSI 7411 is used in biological studies as nucleotide analog polymerase inhibitor for hepatitis C virus QS-9851.<br>References Denning, J., et al.: Antimicrob. Agents Chemother., 57, 1201 (2013)<br></p>

<p>Applications 3-(3-Chlorophenyl)-1,1-dimethylurea has been to study, the quantitative structure-activity relations of substituted phenylureas on the Hill inhibitory activity; Simple and rapid screening method for photosystem II inhibitory herbicides using photoautotrophically cultured plant cells with chlorophyll fluorescence monitoring.<br>References Takemoto I., et al., Nippon Noyaku Gakkaishi, 9, 517-21 (1984); Yoneyama K., et al., Biosci. Biotechnol. Biochem., 57, 1389-90 (1993)<br></p>

<p>Applications 4-Hydroxy Darunavir is a metabolite of Darunavir (D193500), a novel inhibitor of human immunodeficiency virus protease and used in the treatment of HIV infection. It is a COVID19-related research product.<br>References Vermeir, M., et al.: Drug. Meta. Disp., 37, 809 (2009); Koh, Y., et al.: Antimicrob. Agents Chemother., 47, 3123 (2003), Arasteh, K., et al.: AIDS, 19, 943 (2005), Surleraux, D.L.N.G., et al.: J. Med. Chem., 48, 1813 (2005),<br></p>

<p>Applications L-Amoxicillin-d4 is a labeled isomer of Amoxicillin (A634235), a semi-synthetic antibiotic related to penicillin. Antibacterial.<br>References Brogden, R.N., et al.: Drugs, 18, 169 (1979), Bird, A.E., et al.: Anal. Profiles Drug Subs. Excip., 23, 1 (1994),<br></p>

<p>Applications Chlorthiophos is an organophosphorus pesticide.<br>References Lan, M., et al.: Sepu, 36, 938 (2018); Abbas, M. S., et al.: Int. J. Env. Anal. Chem., 97, 1003 (2017)<br></p>

<p>Applications 8-Chloro-6-(2-fluorophenyl)-1-methyl-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylic Acid Methyl Ester is an imidazodiaepine derivative and an impurity of Midazolam (M343000), an anesthetic, anticonvulsant, sedative and hypotic agent.<br></p>

<p>Applications Isopentyl Carnitine Inner Salt is used in the formation of lipids and barriers as well as being a derivative of L-carnitine, used in the diagnosis of metabolic diseases<br>References Paul, H. et al.: PCT Int. Appl. (2000), WO 2000004870 A2 20000203; Yang, S. et l.: J. Chrom. B., Anal. Tech. Biomed. Life Sci., 857, 251 (2007);<br></p>

<p>Applications Chlorflurenol-methyl is an auxin polar transport inhibitor that effects elongation growth of the excised fourth internode of tulips. As well as a pesticide.<br>References Wegrzynowicz-Lesiak, E., et al.: J. Hort. Res., 21, 31-39 (2013);<br></p>

<p>Applications Gatifloxacin derivative; a new antimycobacterial.<br>References Sanchez, J., et al.: J. Med. Chem., 35, 361 (1992), Cecchetti, V., et al.: Bioorg. Med. Chem., 7, 2465 (1999), Alovero, F., et al.: Antimicrob. Agents Chemother., 44, 320 (2000),<br></p>

<p>Applications Chlorhexidine Digluconate Impurity N-d4 Hydrochloride, is labelled Chlorhexidine Digluconate Impurity N (C377660), which is a degradation product found in chlorhexidine digluconate solution.<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 Revelle, L., et. al.: Pharmaceut. Res., 10, 1777 (1993)<br></p>

<p>Applications Metamizole Magnesium Salt is an analgetic, non-opioid drug used in human and veterinary medicinal treatments.<br>References Jasiecka, A. et al.: Polish J. Vet. Sci., 17, 207 (2014); Rogosch, T. et al.: Bioorg. Med. Chem., 20, 101 (2012);<br></p>

<p>Impurity Abacavir EP Impurity C; Abacavir USP Related Compound A<br>Applications Descyclopropyl Abacavir (Abacavir EP Impurity C; Abacavir Related Compound A) is an intermediate of Abacavir (A105000). Abacavir is a carbocyclic 2'-deoxyguanosine nucleoside reverse transcriptase inhibitor and an anti-HIV drug used to treat HIV infection (1). Intracellular enzymes convert Abacavir to its active form, carbovir-triphosphate (CBV-TP), which then selectively inhibits HIV reverse transcriptase by incorporating into viral DNA (2). Abacavir is metabolized in the liver by uridine diphosphate glucuronyltransferase and alcohol dehydrogenase resulting in inactive glucuronide and carboxylate metabolites, respectively.<br>References (1) Jackson, A., et al.: Antivir Ther. 17, 19 (2012) (2) Yuen, G. J., et al.: Clin Pharmacokinet. 47, 351 (2008)<br></p>

<p>Applications Emtricitabine Glycosamine is an impurity of Emtricitabine(E525000) which is a reverse transcriptase inhibitor. It is an effective antiviral agent against HIV, HBV, and other viruses replicating in a similar manner. A nucleoside analog structurally related to Lamivudine (L172500).<br>References FASEB J., 13, 1511 (1999), Molina, J.-M., et al.: J. InfecSchinazi, R.F., et al.: Antimicrob. Ag. Chemother., 36, 2423 (1992), Shockeor, J.P., et al.: Xenobioica, 26, 189 (1996), Feng, J.Y., et al.: . Dis., 182, 599 (2000)<br></p>

<p>Applications L-Carnitine-15N is an isotopically labelled analog of L-Carnitine (C184110), which is an essential cofactor of fatty acid metabolism; required for the transport of fatty acids through the inner mitochondrial membrane. Synthetized primarily in the liver and kidney; highest concentrations found in heart and skeletal muscle.<br>References Mitchell, M.E., et al.: Am. J. Clin. Nutr., 31, 293 (1978); Lango, R., et al.: Cardiovasc. Res., 51, 21 (2001);Vaz, F.M., et al.: Biochem. J., et al.: 361, 417 (2002);Karlic, H., et al.: Nutr. J., 20, 709 (2004)<br></p>

<p>Applications Forchlorfenuron-d5 is the labeled analogue of Forchlorfenuron (F691050), a diphenylurea-derivative cytokinin. Forchlorfenuronis is used as a plant growth regulator (PGR). Forchlorfenuronis is commonly used in horticulture to stimulate the growth of kiwi fruit and grapes.<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 Iwahori, S. et al.: Sci. Horticult., 35, 109 (1988); Peppi, M.C. et al.: Horscience, 43, 173 (2008); Woolley, D. et al.: Acta Horticult., 727, 291 (2005)<br></p>

<p>Applications Labelled metabolite of Flurbiprofen (F598700).<br>References Van Breemen, R., et al.: Drug Metab. Disposition, 14, 197 (1986), Spraul, M., et al.: J. Pharm. Biomed. Anal., 11, 1009 (1993),<br></p>

<p>Applications Metoxuron is used as a herbicide.<br>References Navarro, Simon, et al.: J. of Agric. and Food Chem., 60(21), 5279-5286 (2012);Zhang, Rong, et al.: Sepu, 36(12), 1228-1237 (2018)<br></p>

<p>Applications Cholinesterase inhibitor. Use as systemic insecticide, acaricide, nematocide. Used in Pesticide detection.<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 Dorough, W.H., et al.: J. Agric. Food Chem., 16, 319 (1968),<br></p>

<p>Applications (1R,2S,3S,4R,5S)-1-(Acetoxymethyl)-5-(4-chloro-3-(4-ethoxybenzyl)phenyl)-6,8-dioxabicyclo[3.2.1]octane-2,3,4-triyl Triacetate is an antidiabetic agent and an Ertugliflozin (1210344-57-2) intermediate.<br>References Bowles, P., et al.: Org. Process Res. Dev., 18, 66-81 (2014);<br></p>

<p>Stability Air Sensitive<br>Applications MGK 11 is an insect repellent most commonly used commercially as a mosquito repellent.<br>References Rutledge, L., et. al.: J. Med. Entomol., 20, 506 (1983);Steltenkamp, R., et. al.: Eur. Pat. Appl. 9 pp. Patent (1994) CODEN:EPXXDW;Buescher, M., et. al.: J. Med. Entomol., 19, 176 (1982)<br></p>

<p>Applications 2-(Bromomethyl)-5-(trifluoromethyl)furan is an intermediate used to prepare tertiary sulfonamides as liver X receptor antagonists. It is also used to synthesize hydantoin based inhibitors of MMP13 with potential use in osteoarthritis.<br>References Zuercher, W., et al.: J. Med. Chem., 53, 3412 (2010); De Savi, C., et al.: Bioorg. Med. Chem. Lett., 23, 4705 (2013)<br></p>

<p>Applications The R-enantiomer of Penbutolol (P220500).<br>References Armstrong, D., et al.: Anal. Chem., 66, 1473 (1994), Kato, M., et al.: J. Pharm. Biomed. Anal., 30, 1845 (2003),<br></p>

<p>Stability Hygroscopic<br>Applications 5R,6R-Benzylpenicilloic Acid is the β-lactamase cleavage product/metabolite of antibiotic Penicillin G (P223400).<br>References Dryjanski, M., Pratt, R.: Biochem., 34, 3561 (1995); Ho, H., et al.: Rapid Commun. Mass Spectrom., 25, 25 (2011);<br></p>

<p>Stability Hygroscopic<br>Applications Diquat Dibromide is a herbicidal desiccant.<br>References Ergin, N.: Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 48, 1465 (2020); Nagai, T.: J. Pestic. Sci., 44, 225 (2019)<br></p>

<p>Applications N-Methyl Esomeprazole-d3 is the isotope labelled analog of N-Methyl Esomeprazole (M304640); an impurity of Omeprazole (O635000) which a compound that binds covalently to proton pumps and inhibits gastric secretion. Also used as an antiulcerative.<br>References Muller, P., et al.: Arzneimittel-Forsch., 33, 1685 (1983); Wallmark, B., et al.: Biochim. Biophys. Acta., 778, 549 (1984); Morii, M., et al.: J. Biol. chem., 268, 21553 (1993); Ritter, M., et al.: Br. J. Pharmacol., 124, 627 (1998)<br></p>

<p>Applications Fenticonazole nitrate (F279250) impurity, with antimycotic and antibacterial activity.<br>References Nardi, D., et al.: Arzneim.-Forsch., 31, 2123 (1981),<br></p>

<p>Stability Light Sensitive, Temperature Sensitive<br>Applications An anlogue of β-Carotene (C184250). Decapreno-β-carotene is used as an internal standard for the quantification of the hydrocarbon carotenoids by HPLC.<br>References Hemley, R., et al.: Biophysical J., 20, 377 (1977), Taylor, R.F, et al.: Methods Enzymol., 67, 233 (1980),<br></p>

<p>Applications (E)-6-Amino-2-hexenoic Acid is used in the preparation of anti-collagenase active agent.<br></p>

<p>Applications 5R,6R-Benzylpenicilloate Disodium Salt is a derivative of Benzyl Penicillinate Potassium Salt (B288601), which is an antibiotic substance produced by Penicillium sp. Antibacterial.<br>References Fleming, A., et al.: Br. J. Exp. Pathol., 10, 226 (1929), Clutterbuck, P.W., et al.: Biochem. J., et al.: 26, 1907 (1932), Chain, E., et al.: Lancet, 2, 226 (1940),<br></p>

<p>Applications Methoxychlor-d6 (dimethoxy-d6) (CAS# 106031-79-2) is a useful isotopically labeled research compound.<br></p>

<p>Applications ((2S,3S,4R,5S)-4-Fluoro-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methyl Benzoate is an impurity of antiviral drug Clevudine (C574150), which is used for the treatment of Hepatitis B.<br>References Kwon, S., et al.: J. Virol., 84, 4494 (2010); Daga, P., et al.: Protein Sci., 19, 796 (2010);<br></p>

<p>Applications 3-Acetyl-1-Boc-pyrrolidine is a boc protected reagent that is used for selective inhibitors of H. influenzae TrmD that mimic tRNA interaction by inducing TrmD lid domain ordering.<br>References Hill, P.J., et al.: J. Med. Chem., 56, 7278 (2013);<br></p>

<p>Applications Dihydro Normorphine is a metabolite of Normorphine (N740300).<br>References Hug, C.C, et al.: J. Pharmacol. Exp. Therap., 149, 446 (1965),<br></p>

<p>Applications Diethyl α-Acetylglutarate is used in the preparation of furocoumarins as potential HIV-1 integrase inhibitors.<br>References Olomola, T.O., et. al.: Bioorg. Chem., 57, 1 (2014)<br></p>

<p>Applications O6-Methyl-7,8-dihydro-6-isomorphine is an impurity of Hydromorphone(H714650), an analgesic(narcotic).<br>References Buchwald, M.E., et al.: J. Pharmacol. Exp. Ther., 71, 197 (1941), Zernig, G., et al.: Life Sci., 57, 2113 (1995), Keith, D., et al.: J. Biol. Chem., 271, 19021 (1996), Pawar, M., et al.: Eur. J. Pharmacol., 563, 92 (2007)<br></p>