Toxicologie

Applications An impurity of Rifampamycin (R508000).

Impurity Cefoperazone EP Impurity E
Stability Hygroscopic
Applications 7-Aminocephalosporanic Acid (Cefoperazone EP Impurity E) is the starting material for semi-synthetic cephalosporins. Obtained by mild acid hydrolysis of cephalosporin C.
References Matsuda, A., et al.: J. Bacteriol., 169, 5815 (1987), Aramori, I., et al.: J. Ferment. Bioeng., 72, 227 (1991), Park, S., et al.: J. Biosci. Bioeng., 94, 218 (2002), Takimoto, A., et al.: Appl. Microbiol. Biotechnol., 65, 263 (2004),

Applications Ethyl-d5 Butyrate is the labeled analogue of Ethyl Butyrate (E900690), which is used in the preparation of novel 2-cyanopyrimidines as cathespin K inhibitors. Also used in the synthesis of pyridobenzimidazole derivatives exhibiting antifungal activity by the inhibition of β-1,6-glucan.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References By Rankovic, Z. et al.: Bioorg. Med. Chem. Lett.,, 20, 1524 (2010); Takeshita, H. et al.: Bioorg. Med. Chem. Lett., 20, 3893 (2010)

Applications A potent inhibitor of taurine transport.
References Guidotti, A., et al.: Pharmacol. Res. Commun., 2, 341 (1970),

Applications An antipsychotic.A representative lot was 92% d8, 8% d7.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Stille, et al: Farnaco, Ed. Prat., 26, 603 (1971), Hane, J.M., et al.: Psychopharmacol. Bull., 24, 62 (1988), Meltzer, H.Y.: J. Clin. Psychiatry, 55, Suppl. B, 47 (1994)

Impurity Ondansetron EP Impurity E / Clotrimazole EP Impurity D
Applications Imidazole (Ondansetron EP Impurity E) is a versatile heterocycle used in the preparation of various biologically active compounds such as the amino acid histidine and is present in many antifungal medication. It is also used extensively as a corrosion inhibitor on transition metals such as copper.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Arispe, N. et al.: Biophys. J., 95, 4879 (2008); Troesken, E.R. et al.: Endo. Res., 30, 387 (2004); Otmacic Curkovic, H. et al.: Corr. Sci., 51, 2342 (2009);

Applications Bis(1-methyl-2-hydroxyethyl) Ether is a metabolite formed during the aerobic degradation of polypropylene glycol by Corynebacterium species. An ether found in smoke condensate from nonfiltered cigarettes.
References Kawai, F. et al.: J. Fermentat. Techn., 63, 239 (1985); Schumacher, J. et al.: J. Agr. Food. Chem., 25, 310 (1977)

Applications The major labelled metabolite of Thiocolchicoside (TCC), a muscle relaxant drug.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Sandouk, P., et al.: Biopharm. Drug Dispos., 15, 87 (1994), Perucca, E., et al.: Eur. J. Drug Metab. Pharmacokinet., 20, 301 (1995), Advokat, C., et al.: Pharmacol. Biochem. Behav., 63, 527 (1999),

Stability Hygroscopic
Applications Rosuvastatin tert-Butyl Ester, is a metabolite of Rosuvastatin (R700500) a selective, competitive HMG-CoA reductase inhibitor.
References Watanabe, M., et al.: Bioorg. Med. Chem., 5, 437 (1997), Lee, E., et al.: Clin. Pharmacol. Ther., 78, 330 (2005), Ferdinand, K.C., et al.: Am. J. Cardiol., 97, 229 (2006),

Impurity Levofloxacin Descarboxy Impurity
Applications A degradation product of Levofloxacin (L360000).
References Wong, F., et al.: J. Pharm. Biomed. Anal., 15, 765 (1997), Singh, G., et al.: Pharmazie, 43, 134 (1988), Radi, A., et al.: Talanta, 58, 319 (2002),

Applications A labelled imidazole, a versatile heterocycle used in the preparation of various biologically active compounds such as the amino acid histidine and is present in many antifungal medication. It is also used extensively as a corrosion inhibitor on transition metals such as copper.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Arispe, N. et al.: Biophys. J., 95, 4879 (2008); Troesken, E.R. et al.: Endo. Res., 30, 387 (2004); Otmacic Curkovic, H. et al.: Corr. Sci., 51, 2342 (2009);

Applications Ambroxol O-glucuronide is a metabolite of Ambroxol (A575900, HCl salt), a bronchosecretolytic drug.
References Jauch, R., et al.: Arzneim-Forsch., 13, 474 (1963)

Stability Hygroscopic
Applications N-[2-(2,4-Dichlorophenyl)-2-[(2,4-dichlorophenyl)methoxy]ethyl]-formamide is an impurity of miconazole (M342500). Antifungal (topical).
References Godefroi, E.F., et al.: J. Med. Chem., 12, 784 (1969), Brugmans, et al.: Arch. Dermatol., 102, 428 (1970), Heel, R.C., et al.: Drugs, 19, 7 (1980),

Impurity Atorvastatin EP Impurity G
Applications Atorvastatin derivative.

Applications Influenza viral neuraminidase inhibitor; structural analog of the sialic acid. Antiviral.
References Woods, J.M., et al.: Antimicrob. Agents Chemother., 37, 1473 (1993), Pegg, M.S., et al.: Biochem. Mol. Biol. Int., 32, 851 (1994), Monto, A.S., et al.: J. Am. Med. Assoc., 282, 31 (1999),

Applications A metabolite of Melatonin (M215000).
References Mailliet, F., et al.: Biochem. Pharmacol., 71, 74 (2005), Leon, J., et al.: J. Neurochem., 98, 2023 (2006), Ma, X., et al.: Endocrinol., 149, 1869 (2008),

Stability Hygroscopic
Applications 3-Hydroxybutyrylcarnitine is a reagent used to study acylcarnitine profile in thyroid disease.
References Wong, S., et al.: Clinical Biochem., 46, 180 (2013); Alu, F., et al.: Heredity, 110, 253 (2013); Adam, B., et al.: Clinical Biochem., 44, 1445 (2011)