Toxicology

Applications The erythro isomers have been shown to exhibit very little therapeutic effect and contribute mainly to the toxic hypertensive effects of this drug.Controlled substance.
References Greenblatt, E.N., et al.: J. Pharmacol. Exp. Ther., 131, 115 (1961), Padmanabhan, G.R., et al.: Anal. Profiles Drug Subs., 10, 473 (1981), Kuczenski, R., et al.: J. Pharmacol. Exp. Ther., 296, 876 (2001), Pelham, W.E., et al.: J. Consult. Clin. Psychol., 61, 506 (1993), Srinivas, N.R., et al.: Pharm. Res., 10, 14 (1993),

Applications A metabolite of Norfloxacin (N681000).
References Uno, T., et al.: J. Med. Chem., 33, 2929 (1990),

Applications Labelled Cyclosporin A (C988901) derivative. An immunosuppressant that has revolutionized organ transplantation through its use in the prevention of graft rejection.A group of nonpolar cyclic oligopeptides with immunosupppressant activity.
References van Wartburg, A., et al.: Prog. Med. Chem., 25, 1 (1988), Jorgensen, K.A., et al.: Scand. J. Imunol., 57, 93 (2003), Vollenbroeker, et al.: Transplant. Proc., 37, 1741 (2005)

Applications 7-Keto Dehydro Epiandrosterone is a metabolite of Dehydroepiandrosterone (DHEA) (D229585).
References Majewska, M., et al.: Brain Res., 526, 143 (1990), Charlton, M., et al.: J. Neurochem., 68, 121 (1997), Koob, G., et al.: Biochem. Pharmacol., 68, 1515 (2004);

Applications Labelled Androgen. It has been used as an androgenic agent. Controlled substance (anabolic steroid).
References Bichet, N., et al.: Toxicol. Appl. Pharmacol., 106, 509 (1990), Gustafson, D., et al.: Toxicol. Sci., 53, 245 (2000), Copple, B., et al.: Toxicol. Sci., 77, 172 (2004), Takashima, K., et al.: Life Sci., 78, 2787 (2006),

Applications Aripiprazole-d8 is a deuterated version of Aripiprazole (A771000), a selective dopamine D2-receptor antagonist with dopamine autoreceptor agonist activity.
References Canive, J.M., et al.: Psychopharmacol. Bull., 34, 101 (1998), Oshiro, Y., et al.: J. Med. Chem., 41, 658 (1998),

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),

Applications A peripheral benzodiazepine GABAA receptor ligand, a new anxiolytic.
References Min, D., et al.: Pharmacotherapy, 12, 68 (1992), Rothwell, C., et al.: J. Toxicol. Sci., 27, 35 (2002), Gonzalez-Diaz, H., et al.: Bioorg. Med. Chem. Lett., 15, 1651 (2005), Boelsterli, U., et al.: Curr. Drug Metab., 7, 715 (2006), Rietjens, I., et al.: Chem. Res. Toxicol., 19, 977 (2006),

Applications Anastrozole Acid Amide is a derivative of Anastrozole (A637425), an aromatase inhibitor. Used as an antineoplastic.
References Plourde, P.V., et al.: Breast Cancer Res. Treat., 30, 103 (1994), Buzdar, A.U., et al.: Cancer, 79, 730 (1997)

Applications Labelled Talinolol. Selective β1-adrenergic blocker structurally related to Practolol. Antihypertensive; antiarrhythmic.
References Assmann, I., et al.: Curr. Med. Res. Opin., 13, 325 (1995), Trausch, B., et al.: Biopharm. Drug Dispos., 16, 403 (1995),

Applications Testosterone ester. Testosterone 17-Valerate has been a useful compound in the development of immunochemical techniques for detection of anabolic androgenic steroids in food supplements.
References Ruelle, P., et al.: Int. J. Pharm., 157, 219 (1997), de la Torre, X., et al.: J. Pharm. Biomed. Anal., 24, 645 (2001), Adat, S., et al.: Lett. Drug Des. Discov., 1, 334 (2004), Holubova, B., et al.: Eur. Food Res. Technol., 245, 1011 (2019)

Applications Labelled Dimethomorph (D460530). Agricultural fungicide.
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 Lu, X., et al.: Phytopathol., 100, 1162 (2010), Schafer, R., et al.: Environ. Sci. Technol., 45, 1665 (2011),

Stability Hygroscopic
Applications Synthetic thrombin inhibitor. Thrombin mutant anticoagulant antagonist. Antithrombotic.
References Dewanjee, M., et al.: J. Nucl. Med., 22, 981 (1981), Goodman, S., et al.: J. Biomed. Mater. Res., 45, 240 (1999), Carlsson, S., et al.: Thromb. Res., 115, 9 (2005),

Impurity Clarithromycin EP Impurity I
Applications De(cladinosyl) Clarithromycin (Clarithromycin EP Impurity I) is an impurity of Clarithromycin (C559750). De(cladinosyl) Clarithromycin showed significantly potent antibacterial activity against community acquired respiratory pathogens.
References Morimoto, S., et al.: J. Antibiot., 37, 187 (1984), Buxbaum, A., et al.: J. Antimicrob. Chemother., 52, 371 (2003), Westphal, J., et al.: Br. J. Clin. Pharmacol., 50, 285 (2000), Ma, Z., et al.: J. Med. Chem., 44, 4137 (2001),

Stability Hygroscopic
Applications 4-Chlorophenylcyanamide is an intermediate used in synthesis of N-(4-Chlorophenyl)-O-methylisourea Sulfate Salt (~90%) (C378465), which is a cytotoxic agent which displays tumor inhibitory activity.
References Hendry, J. et al.: Brit. J. Pharmacol. Chemother., 6, 201 (1951);

Applications Deschloro-2-phenylsulfonyl-thiamethoxam is an impurity of thiamethoxam (T344180), which is a neonicotinoid insecticide. Reports show that when exposed to neonicotinid pesticides honeybees have probelms returnign home after foraging and bumblebee colonies grow poorly and produce fewer queens.
References Oliver, J., et al.: J. Environ. Horticult., 28, 135 (2010), Ghosh, A., et al.: J. Entomol. Res., 34, 35 (2010), Chem. and Eng. News 90: 10 (2012)

Applications 3-Methyl Adenine-d3 is labelled 3-Methyl Adenine (M275904). 3-Methyl Adenine is a selective autophagy and phosphoinositide 3-kinase (PI3K) inhibitor (1,2,3). 3-MA inhibits autophagy by blocking autophagosome formation via the inhibition of type III Phosphatidylinositol 3-kinases (PI-3K).
References (1) Munafo, D., et al.: J. Cell Sci., 114, 3619 (2001) (2) Aggarwal, B., et al.: Biochem. Pharmacol., 71, 1397 (2006) (3) Hayat, M., et al.: Oncologist, 12, 20 (2007)

Applications Deuterated Ketoconazole, an inhibitor of cytochrome P-450 dependent steps in the biosynthesis of steroid hormones in vivo. Antimetastatic and antineoplastic activity. Orally active 5-lipoxygenase and thromboxane synthase inhibitor.
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 Lambert, A., et al.: Biochem. Pharmacol., 35, 3999 (1986), Van Wauwe, J.P. and Janssen, P.A.J., J. Med. Chem., 32, 2231 (1989), Nardone, P.A., et al.: . Surg. Res., 44, 425 (1988), Tucker, W.F.G., et al.: Br. Med. J., 293, 882 (1986)

Applications The major product of the stereoselective human metabolism of Chloroquine, used for the therapy and prevention of malaria. It is a COVID19-related research product.
References Essien, E., et al.: J. Pharm. Pharmacol., 38, 543 (1986), Akintonwa, A., et al.: Ther. Drug Monit., 10, 147 (1988), Boelaert, J., et al.: AIDS, 15, 2205 (2001), Basco, L., et al.: Antimicrob. Agents Chemother., 47, 1391 (2003),

Applications Lisdexamphetamine Dimesylate is used as a treatment for adults with attention-deficit/hyperactivity disorder (ADHD). Lisdexamphetamine Dimesylate has been shown to improve executive dysfunction and depressive symptoms in people with mild major depressive disorder (MDD).
References Martin, P.T., et al.: Clin. Drug Invest., 34, 147 (2014); Madhoo, M., et. al.: Neuropsychopharmacol., 39, 1388 (2014);

Applications A labelled metabolite of Theophylline.
References Chen, Y., et al.: Clin. Exper. Pharmacol. Physiol., 36, 828 (2009), Yu, C., et al.: J. Bacteriol., 191, 4624 (2009), Jetter, A., et al.: Eur. J. Clin. Pharmacol., 65, 411 (2009),

Applications Abiraterone Ethyl Ether is an impurity of Abiraterone (A108490), a steroidal cytochrome P 450 17α-hydroxylase-17,20-lyase inhibitor (CYP17), is currently undergoing phase II clinical trials as a potential drug for the treatment of androgen-dependent prostate cancer.
References Denis, L., et al.: Cancer, 72, 3888 (1993); Potter, G.A., et al.: J. Med. Chem., 38, 2463 (1995); Denmeade, S., et al.: Nat. Rev., 2, 389(2002); Scher, H., et al.: J. Clin. Oncol., 23, 8253 (2005)

Stability Hygroscopic
Applications A labelled metabolite of Caffeine.
References Suto, M., et al.: Anticancer Drug Des., 6, 107 (1991), Burkart, V., et al.: Nat. Med., 5, 314 (1999), Hassa, P., et al.: J. Biol. Chem., 278, 45145 2003), Veres, B., et al.: J. Pharmacol. Exp. Ther., 310, 247(2004),

Applications Pemoline is a CNS stimulant. Controlled Substance.
References Connors, C.K., et al.: Psychopharacolgia, 26, 321 (1972), Schafer, E.W., et al.: Toxicol. Appl. Pharmacol., 21, 315 (1972),

Applications (R,R)-Ethambutol Dihydrochloride shows antitumor properties when complexed with platinum. Also an isomer of Ethambutol (E889800), an antibacterial (tuberculostatic).
References Coluccia, M. et al.: Anticanc. Res., 11, 281 (1991); Wilkinson, et al.: J. Med. Chem., 5, 835 (1962), Kulig, et al.: Diss. Pharm. Pharmacol., 23, 463 (1971), Lee, C.S., et al.: Anal. Profiles Drug Subs., 7, 231 (1978)

Applications Oseltamivir citric acid is an impurity of Oseltamivir (O701005), an antiviral drug that is an orally active inhibitor of influenza virus neuraminidase; converted in vivo to the active acid metabolite. It is a COVID19-related research product.
References Oliyai, R., et al.: Pharm. Res., 15, 1300 (1998); Kim, C.U., et al.: Med. Chem. Res., 8, 392 (1998); Hayden, F.G., et al.: N. Engl. J. Med., 341, 1336 (1999); Treanor, J.J., et al.: J. Am. Med. Assoc., 283, 1016 (2000);

Applications A labelled metabolite of Chloroquine. It is a COVID19-related research product.
References Ohkuma, S., et al.: J. Cell. Biol., 90, 656 (1981), Araki, N., et al.: J. Biol. Chem., 267, 10211 (1992), Projean, D., et al.: Drug Metab. Dispos., 31, 748 (2003), Traebert, M., et al.: Eur. J. Pharmacol., 484, 41 (2004),

Applications A B-Adrenergic receptor agonist. A Bronchodilator.
References Akhtar, S., et al.: J. Vet. Pharmacol. Ther., 21, 388 (1998), Kasprowicz, D.J., et al.: J. Immunol., 165, 680 (2000)

Applications Isosulfamethoxazole is an impurity of the antibacterial drug Sulfamethoxazole (S699086). It is a sulfonamide antibiotic that blocks the synthesis of dihydrofolic acid by inhibiting the enzyme dihydropteroate synthase.
References Rudy, B.C., et al.: Anal. Profiles Drug Subs., 2, 467 (1973), Wormser, G.P., et al.: Drugs, 24, 459 (1982), Wharton, M., et al.: Ann. Intern. Med., 105, 37 (1986),

Stability Hygroscopic
Applications Profenofos-D3 is the labeled form of Profenofos(P755880). Profenofos is a broad-spectrum organophosphorous pesticide that is used widely in cotton fields for insect control (1). Acetylcholinesterase inhibiting organophosphoric pesticide (2). Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA), environmental, and food contaminants.

Stability Hygroscopic
Applications Decarboxy Cilastatin is an impurity in the synthesis of Cilastatin (C441100), prevents renal metabolism of penem and carbapenem antibiotics by specific and reversible dehydropeptidase I inhibition. Antibacterial adjunct.
References Finlay, K.R., et al.: Invest. Ophthalmol. Visual Sci., 24, 1147 (1983), Norrby, S.R., et al.: Antimicrob. Agents Chemother., 23, 300 (1983), Washburn, D.E., et al.: J. Antimicrob. Chemother., 12, 39 (1983),

Impurity Fluconazole EP Impurity D
Applications 2-Desfluoro Fluconazole (Fluconazole EP Impurity D) is an impurity of the antifungal agent Fluconazole (F421000).
References Ramesh, B. et al.: J. Pharm. Res., 4, 1401 (2011); Al-Rimawi, F.: Jor. J. Chem., 4, 357 (2009);

Applications A protected metabolite of the fluorinated quinolone antibacterial Ciprofloxacin.

Applications Velpatasvir is a NS5A inhibitor in patients with hepatitis C (HCV) infection.
References Gane, E. J., et al.: Gastroenterol., 151, 448 (2016); Feld, J. J., et al.: N. Engl. J. Med. 373, 2599 (2015);

Applications Sodium Salt of Ampicillin, an orally active, semi-synthetic antibiotic; structurally related to penicillin. Antibacterial.
References Ivashkiv, E., et al.: Anal. Profiles Drug Subs., 2, 1 (1973), Campoli-Richards, D.M., et al.: Drugs, 33, 577 (1987), Sill, M. L., et al.: Antimicrob. Agents Chemother., 52, 1551 (2008),

Applications Sipoglitazar is a novel antidiabetic agent. Sipoglitazar displays triple agonistic activities on the human peroxisome proliferator-activated receptors, hPPAR-γ, -α, and -δ.
References Nishihara, M. et al.: Drug Metab. Dispos., 40, 249 (2012);

Applications Benzyl Trisulfide is a secondary metabolite of Petiveria alliacea, on erythrocyte elasticity, relaxation time and membrane morphol. An antibacterial and antifungal agent.
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 Mohandas, N., et al.: Semin. Hematol., 20, 225 (1983), De Sousa, J., et al.: Phytochem., 29, 3653 (1990),

Applications Labelled δ-Tocopherol. One of the naturally occurring forms of Vitamin E. Isolated from soybean oil.
References Emerson, et al.: Science, 83, 421 (1936), Bieri, J.G., et al.: J. Nutr., 104, 850 (1974), Jiang, Q., et al.: Am. J. Clin. Nutr., 74, 714 (2001),

Applications Triethylamine Trihydrofluoride is used in the synthesis of modified siRNA’s in vivo used to inhibit hepatitis B replication (1). Used in RNA synthesis in the removal of t-butyldimethylsilyl protection (2). Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants.
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 1. Marimani M. et al.: Bioorg Med Chem. 2013 Oct 15;21(20):6145-55. 2. Westman, E. et al.: Nucleic Acids Res. 1994 Jun 25;22(12):2430-1

Applications A novel non-nucleoside reverse transcriptase inhibitor. Rilpivirine seems to be well tolerated with less CNS disturbance than Efavirenz, and has non-teratogenic potential. An anti-HIV agent.
References Sun, et al.: J. Med. Chem., 41, 4648 (1998), Kashiwada, et al.: Bioorg. Med. Chem. Lett., 11, 183 (2001),

Impurity Levofloxacin USP Related Compound C
Applications Levofloxacin Ethyl Ester (Levofloxacin USP Related Compound C) is an impurity of Levofloxacin (L360000).
References Lalitha Devi, M. et al.: J. Pharrm. Biomed. ANal., 50, 710 (2009); Mehta, J. et al.: Int. J. PharmTech Res., 2, 1932 (2010);

Applications An impurity of Trimethoprim (T795615) with inhibitory effects on the enzyme dihydrofolate reductase.
References Kompis, I. et al.: Enzyme Inhib. Proc. Meet., 177 (1980); Hess, S. et al.: J. Pharmac. Biomed. Anal., 25, 531 (2001);

Applications rac Efavirenz is a mixture of both enantiomers for Efavirenz (E425000), a nonnucleoside HIV-1 reverse transcriptase inhibitor. Antiviral.
References Young, S.D., et al.: Antimicrob. Ag. Chemother., 39, 2602 (1995); Hadaruga, D. et al.: J. Med Chem., 48, 2432 (2005);

Applications A metabolite of Malachite Green in seafood products. A triphenylmethane dye with fungicidal and limited antiseptic activity. The term Malachine green applies to the oxalate as well as the chloride. Harmful if swallowed. Avoid release to the environment. Dyes and metabolites, Environmental Testing
References Carter, S.G., et al.: J. Biochem. Biophys. Methods, 7, 7 (1982), Saikan, S., et al.: J. Chem. Phys., 79, 4154 (1983), Clemmensen, S., et al.: Arch. Toxicol., 56, 43 (1984),

Impurity Abacavir - In House Impurity
Applications (1S,4R)-cis-4-Amino-2-cyclopentene-1-methanol D-Tartrate (Abacavir - In House Impurity) is an intermediate of Abacavir (A104990). 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.
References (1) Jackson, A., et al.: Antivir Ther. 17, 19 (2012) (2) Yuen, G. J., et al.: Clin Pharmacokinet. 47, 351 (2008)

Applications N-Formyl Erythromycin A is a derivative of Erythromycin (E649950), an antibiotic medication.
References Koch, W.L., et al.: Anal. Profiles Drug Subs., 8, 157 (1979),

Applications (R)-(+)-2-Amino-3-benzyloxy-1-propanol is used as a reagent to synthesize beta-amino alcohols, compounds that are used as therapeutic agents to treat heart disease. (R)-(+)-2-Amino-3-benzyloxy-1-propanol is also used as a reagent to synthesize 15-membered macrolide antibiotics, drugs that are used to treat respiratory tract infections.
References Fisher, G., et al.: J. Org. Chem., 60, 2026 (1995); Metro, T., et al.: J. Org. Chem., 72, 6556 (2007); Sugimoto, T., et al.: Bioorg. Med. Chem., 20, 5787 (2012)

Applications Primary alkaloid of various species of Cinchona (Rubiaceae). Optical isomer of Quinidine. Antimalarial; muscle relaxant (skeletal).
References Muhtadi, F.J., et al.: Anal. Profiles Drug Subs., 12, 547 (1983), Kremsner, P.G., et al.: J. Infect. Dis., 169, 467 (1994),

Impurity Ceftazidime EP Impurity A
Stability Hygroscopic, Light Sensitive
Applications ∆2-Ceftazidime, 90% (Ceftazidime EP Impurity A) is a Ceftazidime isomer, an impurity of Ceftazidime (C244100).
References Vilanova, B., et al.: Helv. Chim. Acta, 76, 2789 (1993), Zhou, M., et al.: J. Pharm. Sci., 84, 534 (1995), Baertschi, S., et al.: Chemother. 8, 353 (1997), Porra, R., et al.: J. Pharm. Biomed. Anal., 18, 241 (1998),

Impurity Fluconazole EP Impurity B / Fluconazole USP Related Compound A
Applications 4-Defluoro-4-(1H-1,2,4-triazol-1-yl) Fluconazole (Fluconazole EP Impurity B) is an impurity of the antifungal agent Fluconazole (F421000).
References Ramesh, B. et al.: J. Pharm. Res., 4, 1401 (2011); Al-Rimawi, F.: Jor. J. Chem., 4, 357 (2009);

Applications Hydroxychloroquine O-Sulfate Sodium Salt is an analogue and potential metabolite of the antimalarial drug Hydroxychloroquine (H916900). Studies suggest that there is increased uptake and retention of Hydroxychloroquine O-Sulfate in blood of rheumatoid arthritis subjects. It is a COVID19-related research product.
References Lucherini, T. et al.: Recenti Prog. Med., 33, 446 (1962); Mueting, D.: Nature, 195, 1003 (1962);

Applications 2,2,4-Trimethyl-6(2H)-quinolinone 1-Oxide is a derivative of 2,6-Dihydro-2,2,4-trimethyl-6-quinolone (D449900) which is a metabolite of Ethoxyquin (E892800), an oxidation product of the antidegradant.
References Kahl, R., et al.: Toxicology, 28, 229 (1983), Burka, L., et al.: Xenobiotica, 26, 597 (1996), Bammler, T., et al.: Toxicol. Sci., 54, 30 (2000), Hayes, J., et al.: Cancer, 174, 103 (2001),

Applications Atazanavir is a novel azapeptide HIV protease inhibitor (PI). Antiviral.
References Palella, F.J. Jr., et al.: N. Engl. J. Med., 338(13), 853 (1998), Nolan, D., et al.: Drugs, 63(23), 2555 (2003), Musial, B.L., et al.: Am. J. Health Syst. Pharm., 61, 1365 (2004), Wood, R., et al.: J. Acquir. Immune Defic. Syndr., 36, 684 (2004),

Stability Light Sensitive
Applications 2',7'-Dichlorodihydrofluorescein as a cell-permeable non-fluorescent probe. It is de-esterified intracellularly and turns to highly fluorescent 2′,7′-dichlorofluorescein upon oxidation.
References Lebel, C., et al.: Chem. Res. Toxicol., 5, 227 (1992), Kjaer, M., et al.: Lipids, 43, 813 (2008), Baron, C., et al.: J. Agric. Food Chem., 57, 4185 (2009),

Stability Hygroscopic
Applications Dipotassium Glycyrrhizinate is used in improving the dissolution property of amphotericin B (AMB) and the bioavailability of the drug incorporated in suppositories.
References Tanaka, M., et. al.: Chem. Pharm. Bull., 40, 1559 (1992);

Applications (+)-Costunolide is an inhibitor of osteoclast differentiation, acting as an anti-inflammatory and anti-oxidant agent. It is a sesquiterpene lactone which mediates apoptosis.
References Cheon, Y. et al.: Phytother. Res., 28, 586 (2014); Butturini, E. et al.: Eur. J. Pharm., 730, 107 (2014);

Applications A metabolite of the fluorinated quinolone antibacterial Ciprofloxacin.

Applications 5,6-Dihydroyangonin is a derivative of Yangonin (Y100550), a lactone isolated from the Kava plant (Piper methysticum). 5,6-Dihydroyangonin was shown to exhibit potential antibacterial and antifungal activities.
References Keledjian, J., et al.: J. Pharm. Sci., 77, 1003 (1988), Clouatre, D., et al.: Toxicol. Lett., 150, 85 (2004), Mathews, J., et al.: Drug Metab. Dispos., 33, 1555 (2005), Clayton, N., et al.: Exp. Toxicol. Pathol., 58, 223 (2007),

Stability Hygroscopic
Applications Piperacillin sodium is an antibiotic related to penicillin. Also, it possesses anti-microbial activity against enterobacteria.
References Zhang, Y., et al.: Linchuang Wuzhen Wuzhi, 27, 63-65 (2014)

Applications 3-(7-Cyano-5-(2-nitropropyl)indolin-1-yl)propyl Benzoate is used in the preparation of Silodosin (S465000), an α1a-adrenoceptor antagonist. It is used in treatment of benign prostatic hypertophy.
References Shibata, K., et al.: Mol. Pharmacol., 48, 250 (1995); Murata, S., et al.: J. Urol., 164, 578 (2000)

Impurity Mometasone Furoate EP Impurity A
Applications Mometasone Furoate Impurity A (Mometasone EP Impurity A) is an impurity of Mometasone Furoate, a topical corticosteroid used as an anti-inflammatory.
References Shapiro, E.L., et al.: J. Med. Chem., 30, 1581 (1987); Graft, D., et al.: J. Allergy Clin. Immunol., 98, 724 (1996)

Applications Lamivudine epimer.
References Chang, C., et al.: J. Biol. Chem., 267, 13938 (1992), Jeong, L., et al.: J. Med. Chem., 36, 181 (1993),

Stability Hygroscopic
Applications A pro-drug of Ganciclovir. Used in treatment of retro-virus.
References Acosta, E., et al.: Clin. Pharmacol. Ther., 81, 867 (2007), Nassetta, L., et al.: J. Antimicrob. Chemother., 63, 862 (2009),

Applications L-Cycloserine is an irreversible inhibitor of 3-ketodihydrosphingosine synthetase.

Impurity Artemether USP Related Compound B
Applications Derivative of Artemisinin (A777500). Shows antimalarial and antifungal activity.
References Michael, O., et al.: Malaria J., 9, 335 (2010), Cesar, I., et al.: J. Pharm. Biomed. Anal., 54, 114 (2011), Galal, A. et al.: J. Nat. Prod. 68, 1274 (2005)

Impurity Vancomycin Impurity
Applications An impurity in Vancomycin.A representative lot was 75% by HPLC with less than 0.1% vancomycin.
References Marshall, F.J., et al.: J. Med. Chem., 8, 18 (1965), Sheldrick, G.M., et al.: Nature, 271, 223 (1987), Dutca-Melan, S., et al.: J. Clin. Microbiol., 33, 24 (1995),

Impurity Ampicillin EP Impurity A ; Amoxicillin USP Related Compound A
Applications (+)-6-Aminopenicillanic Acid (Amoxicillin EP Impurity A) is the core structure in penicillins, obtained from the fermentation brew of the Penicillium mold. (+)-6-Aminopenicillanic Acid is used as the main starting block for the preparation of numerous semisynthetic penicillins.
References Zel'tser, I.Z. et al.: Gig. Truda Prof. Zabol., 5, 59 (1983); Hamilton-Miller, J.M.T.: Int. J. Antimicrob. Agents, 31, 189 (2008); Novikova, N.D. et al.: Mikol. Fitopatol., 7, 101 (1973);

Applications Pyrimethanil-d5 (phenyl-d5) (CAS# 2118244-83-8) is a useful isotopically labeled research compound.

Applications Adrenalone is a ketone derivative of Epinephrine (E588585) and a potential dopamine β oxidase inhibitor.
References Goldstein, M., et al.: Nature, 192, 1081 (1961)

Stability Moisture Sensitive
Applications Naled is a cholinesterase inhibitor. Insecticide; acaricide.
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 Gaines, T.B., et al.: Toxicol. Appl. Pharmacol., 14, 515 (1969),

Applications Psychotropic agent with anxiolytic and anticonvulsant activity.
References Boissier, J.R., et al.: Therapie, 27, 325 (1972), Bente, D., et al.: Arzneim. Forsch., 25, 944 (1975),

Applications Oxychloroaphine is a simple phenazine with weak antifungal activity.