Toxicologie

Impurity USP Ribavirin Related Compound A
Applications Ribavirin Carboxylic acid is an impurity of Ribavirin (R414475). Ribavirin impurity A.
References Lertora, J., et al.: Clin. Pharmacol. Ther., 50, 442 (1991), Connor, E., et al.: Antimicrob. Agents Chemother., 37, 532 (1993), Manns, M., et al.: Lancet, 358, 958 (2001),

Impurity Valganociclovir EP Impurity J
Applications Ganciclovir Mono-O-propionate is a potential prodrug of Ganciclovir (G235000). Ganciclovir Mono-O-propionate was also found to exhibit anti-viral activity through experimental studies.
References Dias, C.S., et al.: J. Pharma. Sci., 91, 660 (2002);

Applications 10-O-Benzyl (R)-Apomorphine-d5 is the isotope labelled analog of 10-O-Benzyl (R)-Apomorphine (B230300); a benzyl derivative of (R)-Apomorphine (A727500) which is a dopamine (D1 and D2) receptor agonist, emetic, and antiparkinsonian.
References Neumeyer, J.L., et al.: J. Pharm. Sci., 59, 1850 (1970); Ginos, J.Z., et al.: J. Med. Chem., 18, 1194 (1975); Muhtadi, F.J., et al.: Anal. Profiles Drug Subs., 20, 121 (1991)

Applications A labelled metabolite of Warfarin (W498500) in humans.
References Barbato, F., et al.: J. Pharm. Sci., 86, 225 (1997), Kavana, M., et al.: Biochemistry, 42, 10238 (2003), Franco, A., et al.: Environ. Toxicol. Chem., 28, 458 (2009),

Applications 2-O-Methyl-β-D-N-acetylneuraminic Acid Sodium Salt, is a model compound for studies of binding of influenza virus hemaglutinin and metal ions.
References Sauter, N.K., et al.: Biochemistry, 28, 8388 (1989), Sharon, N., et al.: Science, 246, 227 (1989), Nagy, J.O., et al.: J. Med. Chem., 35 (23), (1992), Knibbs, R.N., et al.: J. Biol. Chem., 268 (25), 18524 (1993)

Applications An antiviral. Labelled HIV protease inhibitor. It is a COVID19-related research product.
References Patick, A.K., et al.: Antimicrol Ag. Chemother., 40, 292 (1996), Bardsley-Elliot, G.L., et al.: Drugs, 59, 581 (2000)

Applications A metabolite of Dipyridamole.
References Zak, S.B., et al.: J. Pharmacol. Exp. Ther., 141, 392 (1963),

Applications Ethanolamine is used in the preparation of various pharmaceutical compounds and inhibitors. Substituted carboxamides are synthesized using Ethanolamine that show potent antitumor activity. Also used in the synthesis of aminoquinolones which display anti-plasmodial activity.
References Lombardo, L. et al.: J. Med. Chem., 47, 6658 (2004); Egan, T.: J. Med. Chem., 43, 283 (2000)

Applications Isotope labelled 1,2-Pentanediol is used in synthesizing quinoxalines from biomass-derived glycols. Also used in the synthesis of propiconazole (P770100) a fungicide as well as other antifungals.
References Climent, M. et al.: J. Catal., 292, 118 (2012); Zhou, Y. et al.: Carbo. Res., 344, 1289 (2009);

Applications A reactant used in the preparation of carbocyclic deoxyguanosine analog with potent and selective anti-hepatitis B virus.
References Bisacchi, G. et al.: Bioorg. Med. Chem. Lett., 7, 127 (1997)

Applications An intermediate in the preparation of antifungal agents such as Ketoconazole (K186000), Itraconazole (I937500) and Terconazole.

Applications Streptamine Sulfate is the sulfate salt of streptamine, which is a subunit used in the synthesis of Streptomycin (S687500), an antibiotic substance produced by aerobic fermentation that is also antibacterial (tuberculostatic).
References Weiss, et al.: Antibiot. Chemother., 7, 374 (1957), Umezawa, et al.: J. Antibiot., 27, 997 (1974), Mossa, J., et al.: Anal. Profiles Drug Subs., 16, 507 (1986)

Stability Hygroscopic
Applications p-Nitrophenyl 6-Sulfo-2-acetamido-2-deoxy-β-D-glucopyranoside Sodium Salt is used in the design of N-acetyl-6-sulfo-β-D-glucosaminide-based inhibitors of influenza virus sialidase.
References Sasaki, K., et al.: Bioorg. Med. Chem., 12, 1367 (2004)

Applications Posaconazole-D-Glucuronide is an impurity of Posaconazole(P689600); is orally active triazole antifungal.
References Cacciapuoti, A., et al.: Antimicrob. Agents Chemother., 44, 2017 (2000), Herbrecht, R., et al.: Int. J. Clin. Pract., 58, 612 (2004), Panackal, A., et al.: J. Clin. Microbiol., 44, 1740 (2006),

Applications 3-Chloroacetanilide is a major metabolite of chlorpropham. An acetanilide herbicide derivative.
References Carrera, G., et al.: Arch. Environ. Cont. Tox., 35, 89 (1998); Freitas, M. R., et al.: Bull. Environ. Contam. Toxicol., 92, 143 (2014)

Applications Pyrifenox

Applications The microsomal metabolite of Yangonin (Y100550).
References Johnson, B., et al.: Chem. Res. Toxicol., 16, 733 (2003), Mathews, J., et al.: Drug Metab. Dispos., 33, 1555 (2005), Zou, L., et al.: Planta Medica, 71, 142 (2005),

Applications Methyl 3,5-dichlorobenzoate (cas# 2905-67-1) is a useful research chemical.

Applications Rapamycin (R124000) derivative, a triene macrolide antibiotic isolated from Streptomyces hygroscopicus. Name derived from the native word for Easter Island, Rapa’Nui. Used as an immunosuppressant; antirestenotic. Sirolimus (INN/USAN), also known as rapamycin, is an immunosuppressant drug used to prevent rejection in organ transplantation; it is especially useful in kidney transplants.
References Martel, P.R., et al.: Can. J. Physiol. Pharmacol., 55, 48 (1977), Carlson, R.P., et al.: J. Pharmacol. Exp. Ther., 266, 1125 (1993), Kahan, B.D., et al.: Lancet, 356, 194 (2000), Holmes, D.R., et al.: Circulation, 109, 634 (2004),

Applications 1-Cyclopropyl-7-fluoro-6,8-dimethoxy-4-quinolone-3-carboxylic Acid Ethyl Ester is an impurity in the synthesis of Moxifloxacin (M745000), a fluorinated quinolone antibacterial.
References Woodcock, J.M., et al.: Antimicrob. Ag. Chemother., 41, 101 (1997), Stass, H., et al.: Antimicrob. Ag. Chemother., 42, 2060 (1998)

Applications 3-​Methoxy-​4-​methyl-​1H-​1,​2,​4-​triazol-​5(4H)​-​one Hydrate, is a Triazole (T767410) derivative that was used in microwave synthesis of 1,2,4-triazolone derivatives possessing antifungal activity. 3-​Methoxy-​4-​methyl-​1H-​1,​2,​4-​triazol-​5(4H)​-​one is also a key intermediate for sulfonylurea herbicides, such as flucarbazone.
References Su, J., Shang, Z.: Nongyao, 49, 563 (2010); Sun, N., et al.: BioMed Res. Int., 1 (2015);

Applications (S)-(-)-Ofloxacin-d3 (N-methyl-d3) (CAS# 2208780-63-4) is a useful isotopically labeled research compound.

Applications Testosterone-2,2,4,6,6-d5 Heptanoate is a useful isotopically labeled compound of Testosterone Enanthate (T155080)

Applications Propoxur is a non-systematic carbamate insecticide. Propoxur is used against a wide range of insects such as fleas, mosquitoes, ants, gypsy moths, and other agricultural pests. Propoxur functions by reversibly inactivating the enzyme acetylcholinesterase in insects. It is also used in cannabis testing kits as a component of pesticide mixes (P698235).
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 Voss, G.: Anzeig. Schaedling., 40, 73 (1967); Fraser, J. et al.: J. Sci. Food. Agric., 8 (1968); Corbel, V. et al.: Neurotoxicology, 27, 508 (2006);

Applications Carboxytolbutamide-d9 (butyl-d9) (CAS# 1219802-95-5) is a useful isotopically labeled research compound.

Applications 4-(Trifluoromethoxy)benzoic Acid-13C is labeled 4-(Trifluoromethoxy)benzoic Acid (T790720) which is a substituted benzoic acid used in the preparation of a various biologically active compounds such as antifungal and antimalarial agents.
References Jiang, Y. et al.: Bioorg. Med. Chem. Lett., 21, 4471 (2011); Herrin, T.R. et al.: J. Med. Chem., 18, 1216 (1975);

Applications Stavudine-alpha,alpha,alpha,6-d4 (CAS# 1219803-67-4) is a useful isotopically labeled research compound.

Applications 3-Chloro-6-(chloromethyl)benzene-1,2,4,5-d4 is an isotope-labeled analog of 4-Chlorobenzyl Chloride (C364730), which is a benzylchloride derivative used in the preparation of various biologically active compounds such as bronchodilators and antibacterial agents.
References Adams, M. et al.: Synth. Comm., 29, 2419 (1999); Foroumadi, A. et al.: Arch. Pharm. Res., 30, 138 (2007);

Applications 4-Fluorobenzonitrile-d4 is the labelled version of fluorobenzonitrile, a compound with industrial applications from solar cells to medicinal application as an anti-inflammatory.
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 Heilman, W.P. et al.: J. Med. Chem., 21, 906 (1978); Woo, S. et al.: J. Nano. Opto., 6, 338 (2011);

Applications An enantiomer of Tolvaptan. It is a selective, competitive arginine vasopressin V2 receptor antagonist used to treat hyponatremia (low blood sodium levels) associated with congestive heart failure, cirrhosis, and the syndrome of inappropriate antidiuretic hormone (SIADH).
References Paterna, S., et al.: Eur. J. Heart Fail, 2, 305 (2000), Udelson, J., et al.: Circulation, 104, 2417 (2001), Goldsmith, S., et al.: J. Am. Coll Cardiol., 46, 1785 (2005), Schrier, R., et al.: N. Engl. J. Med., 355, 2099 (2006),

Applications (±)-Betaxolol-d7 HCl (iso-propyl-d7) (CAS# 1219802-92-2) is a useful isotopically labeled research compound.

Applications Sodium 4-Hydroxybutyrate-2,2,3,3-d4 (CAS# 1251763-08-2) is a useful isotopically labeled research compound.

Applications (±)-Carvedilol-d4 (ethyl-d4) (CAS# 1133705-56-2) is a useful isotopically labeled research compound.

Applications Labelled Dapoxetine (D185700). Selective serotonin reuptake inhibitor (SSRI).
References Feret, B., et al.: Formulary, 40, 227 (2005),

Applications Nitroethane-2,2,2-d3 (CAS# 1219802-04-6) is a useful isotopically labeled research compound.

Applications N-Desmethyl Regorafenib (Pyridine)-N-oxide-d3 is the isotope labelled analog of N-Desmethyl Regorafenib (Pyridine)-N-oxide (D293280); a synthetic metabolite of Regorafenib (R143000) used for treatment and prevention of cancer.
References Wilhelm, S.: PCT Int. Appl. WO 2011130728 A1 20111020. Oct 20, 2011

Applications Tetraethylammonium Cyanide is a reactant in the synthesis of iron iodide cyanide carbonyl complexes.
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 Stock, A., et al.: Inorg. Chem. Commun., 18, 105-109 (2012)

Applications Fenoxaprop

Applications n-Nonanoic-9,9,9-d3 acid is labelled n-Nonanoic Acid (N649385) which is commonly used in conjunction with glyphosate, a non-selective herbicide, for a quick burn-down effect in the control of weeds in turfgrass. It is also used in the preparation of plasticizers and lacquers.
References Pline, W., et al.: Weed Technol., 14, 667 (2000); Frade, J., et al.: Anal. Bioanal. Chem., 395, 2167 (2009)

Applications α-Chloro-p-methyltoluene-13C is the labeled analogue of α-Chloro-p-methyltoluene(C369770). α-Chloro-p-methyltoluene is a building block that has been used as a reactant for the preparation of 6-aminoquinolone derivatives as submicromolar hepatitis C virus NS5B inhibitors
References Manfroni, G., et. al.: J. Med. Chem., Ahead of Print (2013)

Applications (R)-Telaprevir-d4 is the labeled analog of (R)-Telaprevir, an enantiomer of Telaprevir (T015650). Telaprevir is an known inhibitor of the hepatitis C virus NS3-4A protease. It is a COVID19-related research product.
References Francois, J., et al.: J. Medn. Chem., 52. 7993 (2009); Kieffer, T., et al.: Hepatology, 46, 631 (2007), Zhou, Y., et al.: Antimicrob. Agents Chemother., 52, 110 (2008), Hezode, C., et al.: N. Engl. J. Med., 360, 1839 (2009);

Applications 2-epi-Darunavir is a stereoisomer to Darunavir (D193500), a second generation HIV-1-protease inhibitor; structurally similar to amprenavir. Antiviral. It is a COVID19-related research product.
References Rao, R.N., et. al.: J. Sep. Sci., 35, 2671 (2012); 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)

Applications Labelled 3'-N-[[4-(acetylamino)phenyl]sulfonyl]-3'-N-demethyl Azithromycin, an impurity of Azithromycin (A927000).
References Debremaeker, D. et al.: Rap. Comm. Mass. Spec., 17, 342 (2003);

Applications Acifluorfen-methyl-2-amino is a derivative of Acifluorfen (A795248), a herbicide.
References Gooch, A. et al.: Env. Toxicol. Chem., 36, 2227 (2017)