Derivados de Quinazolina e Quinolina

<p>Applications δ-Valerolactam is a useful synthetic intermediate. It is an intermediate used to synthesize Cenicriviroc (C256550), an experimental drug candidate for the treatment of HIV infection. It is also a starting material for a new route to hexahydrojulolidines, using intramolecular 1,4-cycloaddition.<br>References Potts, K., et al. J. Org. Chem., 58, 5040 (1993); Klibanov, O., et al.: Curr. Opinion Invest. Drugs, 11, 940 (2010);<br></p>

<p>Applications Labeled rac-Ambrisentan (A575860) Nonpeptide endothelin ETA receptor antagonist. Antihypertensive.<br>References Riechers, H., et al.: J. Med. Chem., 39, 2123 (1996), Billman, G.E., et al.: Curr. Opin. Invest. Drugs, 3, 1483 (2002), Vatter, H., et al.: Clin. Neuropharmacol., 26, 73 (2003),<br></p>

<p>Applications Eltrombopag Methyl Ester, is a metabolite of Eltrombopag (E508000), which is an agonist of the Thrombopoietin (Tpo) receptor, used as treatment for thrombocytopenia.<br>References Bussel, J., et al.: New Eng. J. Med., 357, 2237 (2007), Marsilje, T., et al.: Bioorg. Med. Chem. Lett., 18, 5259 (2008), Alper, P., et al.: Bioorg. Med. Chem. Lett., 18, 5255 (2008),<br></p>

<p>Applications Defluoro Fluvoxamine intermediate.<br></p>

<p>Applications 2-Amino-3-benzyloxypyridine is used in preparation of pyridinyl/pyridazinyloxymethyl substituted Raf kinase inhibitors.<br>References Jen, T., et al.: J. Med. Chem., 20, 1258 (1977), Chung, D., et al.: Antican. Res., 11, 1373 (1991),<br></p>

<p>Applications 3-Hydroxy Anagrelide-13C3 is a major labelled metabolite of Anagrelide, an antithrombotic.<br>References Fleming, J., et al.: Thromb. Res., 15, 373 (1979), Gillespie, E., et al.: Biochem. Pharmacol., 37, 2866 (1988), Mazur, E., et al.: Blood, 79, 1931 (1992), Wang, G., et al.: Br. J. Pharmacol., 146, 324 (2005), Wagstaff, A., et al.: Drugs, 66, 111 (2006),<br></p>

<p>Impurity Anastrozole Diacid Impurity<br>Applications Anastroloze Diacid is a derivative of Anastrozole (A637425), an aromatase inhibitor. Used as an antineoplastic. Anastrozole Diacid Imp<br>References Plourde, P.V., et al.: Breast Cancer Res. Treat., 30, 103 (1994), Buzdar, A.U., et al.: Cancer, 79, 730 (1997)<br></p>

<p>Applications A reactive metabolite of Lapatinib (L175800) which is associated with various drug toxicities. Lapatinib is metabolized mainly by P450 3A4 to form O- and N-dealkylated metabolites.<br>References He, K., et al.: Chem. Res. Toxicol., 11, 252 (1998), Rusnuk, D., et al.: Cancer Res., 61, 7196 (2001), Li, X., et al.: Drug Metab. Dispos., 37, 1242 (2009),<br></p>

<p>Applications (S)-5-Chloro-α-(cyclopropylethynyl)-2-[[(4-methoxyphenyl)methyl]amino]-α-(trifluoromethyl)benzenemethanol is the S enantiomer of rac-5-Chloro-α-(cyclopropylethynyl)-2-[[(4-methoxyphenyl)methyl]amino]-α-(trifluoromethyl)benzenemethanol (C365145). (S)-5-Chloro-α-(cyclopropylethynyl)-2-[[(4-methoxyphenyl)methyl]amino]-α-(trifluoromethyl)benzenemethanol is also an impurity of Efavirenz (E425000), an HIV-1 reverse transcriptase inhibitor.<br>References Pierce, M., et al.: J. Org. Chem., 63, 8536 (1998)<br></p>

<p>Applications Benzoin has been used as a catalyst in photoinitiation.<br>References Voll, D., et. al.: Macromolecules, 44, 2542 (2011)<br></p>

<p>Impurity Leflunomide EP Impurity C/ Leflunomide BP Impurity C<br>Applications Leflunomide 3-Isomer (Leflunomide EP Impurity C) is a Leflunomide analogue, with potential antiinflammatory and anti-viral activity. Leflunomide (L322750) Impurity E.<br>References Bertolini, G., et al.: J. Med. Chem., 40, 2011 (1997), Huang, W., et al.: Chem. Pharm. Bull., 51, 313 (2003),<br></p>

<p>Applications Synthetic thrombin inhibitor. Antithrombotic.<br>References Abiko, Y., et al.: Thromb. Res., 24, 285 (1981), Kikumoto, R., et al.: Biochemistry, 23, 85 (1984),<br></p>

<p>Applications Safinamide-d4 is a labelled analogue of Safinamide. Safinamide is a potent and selective MAO-B inhibitor, and is used as an add-on treatment to treat Parkinson’s disease.<br>References Finberg, J.P.M., et al.: Front Pharmacol., 7, 340-54 (2016);<br></p>

<p>Applications Labelled, primary metabolite of Tianeptine.<br>References Dresse, A., et al.: J. Clin. Pharmacol., 28, 1115 (1988), Grislain, L., et al.: Drug Metab. Dispos., 18, 804 (1990),<br></p>

<p>Applications Methyl 4-methyl-3-[[4-(pyridin-3-yl)pyrimidin-2-yl]amino]benzoate is an intermediate used in the synthesis of 4-Methyl-3-[[4-(3-pyridinyl)-2-pyrimidinyl]amino]benzamide (M326838), which is an impurity of Nilotinib (N465300), a possible agent in the treatment of chronic myelogenous leukemia.<br>References Corbin, A., et al.: J. Biol. Chem., 277, 32214 (2002); Golemovic, M., et al.: Clin. Cancer Res., 11, 4941 (2005); Gleixner, K., et al.: Blood, 107, 752 (2006); Nicolini, F., et al.: Leukemia, 20, 1061 (2006)<br></p>

<p>Impurity Telmisartan Bromo Amide Impurity<br>Applications An impurity in the preparation of the angiotensin II receptor antagonist Telmisartan (T017000).<br>References Wienen, W., et al.: Brit. J. Pharmacol., 110, 245 (1993), Neutel, J.M., and Smith, D.H.G.: Adv. Ther., 15, 206 (1998)<br></p>

<p>Applications Labelled Asenapine. Asenapine is a combined serotonin (5HT2) and dopamine (D2) receptor antagonist; structurally related to Mianserin. Antipsychotic.<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 Meltzer, H. et al.: J. Pharmacol. Exp. Ther., 251, 238 (1989); Schotte, A. et al.: Brain Res., 631, 191 (1993); Andree, B. et al.: Psychopharmacology, 131, 339 (1997); Richelson, E. et al.: Life Sci., 68, 29 (2000);<br></p>

<p>Applications 2-Amino-3-hydroxypyridine (cas# 16867-03-1) is a compound useful in organic synthesis.<br></p>

<p>Applications Useful intermediate for the synthesis of a variety of chiral aminopiperidinyl quinolones as potent antibacterial agents against resistant pathogens; and alkynylpyrimidine amide derivatives as orally available inhibitors of Tie-2 kinase.<br>References Hu, X., et al.: J. Med. Chem., 46, 3655 (2003), Cee, V., et al.: J. Med. Chem., 50, 627 (2007),<br></p>

<p>Applications A labelled metabolite of Diltiazem (D460620).<br>References Shallcross, H., et al.: Br. Med. J., 295, 1236 (1987), Yeung, P.K.F., et al.: Drug Metab. Dispos., 18, 1055 (1990), Cashman, J.R., et al.: J. Med. Chem., 34,2049 (1991),<br></p>

<p>Applications Ticagrelor Acetoxide is an acetoxy impurity of Ticagrelor (T437700). Ticagrelor (T437700), the first reversible oral P2Y12 receptor antagonist, provides faster, greater, and more consistent ADP-receptor inhibition than Clopidogrel. Used in the treatment of acute coronary syndromes (ACS).<br>References Matetzky, S., et al.: Circulation, 109, 3171 (2004), Bassand, J., et al.: Eur. Heart J., 28, 1598 (2007), Jakubowski, J., et al.: Cardiovasc. Drug Rev., 25, 357 (2007)<br></p>

<p>Applications Everolimus NHS-carbonate is a derivative of Everolimus (E945400), a macrolide immunosuppressant.<br></p>

<p>Applications 4-Methyl-3-(4-pyridin-3-yl)pyrimidin-2-yl]amino-N-(5-(3-oxo-4-methyl-1H-imidazol-1-yl)-3-(trifluoromethyl)phenyl)benzamine is an impurity compound of Nilotinib (N465300), useful in the treatment of chronic myelogenous leukemia. It is a COVID19-related research product.<br>References Wei-Sheng H., et al.: Synthesis, 14, 2121 (2007); Corbin, A., et al.: J. Biol. Chem., 277, 32214(2002), Golemovic, M., et al.: Clin. Cancer Res., 11, 4941 (2005), Gleixner, K., et al.: Blood, 107, 752 (2006), Nicolini, F., et al.: Leukemia, 20, 1061 (2006),<br></p>

<p>Applications 5-Sulfosalicylic Acid Dihydrate is for reducing and fixation of proteins in agarose and polyacrylamide gels.<br></p>

<p>Applications A labelled metabolite of the anti-cancer drug Tamoxifen (T006000).<br>References Heiman, D., et al.: J. Med. Chem., 23, 994 (1980), Kier, L., et al.: Pharm. Res., 7, 801 (1990),<br></p>

<p>Applications MRX-2843, is an orally available small-molecule inhibitor of both MERTK and FLT3.<br>References Minson, K. A. et al.: JCI Insight. 2016 Mar;1(3):e85630.;<br></p>

<p>Applications An antihistaminic drug. A drug analog of Cyclizine (C987805).<br>References Leurs, R., et al.: Pharmacol. Ther., 66, 413 (1995), Hu, Q., et al.: J. Biol. Chem., 274, 33995 (1999), Church, M., et al.: Clin. Exp. Allergy, 31, 1341 (2001),<br></p>

<p>Applications Labelled Omeprazole (O635000) impurity.<br>References Allenmark, S., et al.: Anal. Biochem., 136, 293 (1984), Besancon, M., et al.: J. Biol. Chem., 272, 22438 (1997),<br></p>

<p>Impurity Tadalafil EP Impurity A N-Desmethyl Impurity<br>Applications (6R,12aS)-N-Desmethyl Tadalafil (Tadalafil EP Impurity A N-Desmethyl Impurity) is an intermediate in the synthesis of novel potent arylated analogues of tadalafil (T004500).<br>References Beghyn, T., et al.: Bioorg. Med. Chem. Lett., 17, 789 (2007);<br></p>

<p>Applications This product is deuterated at the 1 position and on the ajacent methyl. The 1 position is the benylic position of the bis(trifluoromethyl) phenyl. This compound has a mixture of 1 to 4 deuterium atoms, there is no detectable unlabeled material.Aprepitant is a structurally novel substance P neurokinin 1 (NK1) receptor antagonist. In vitro studies using human liver microsomes indicate that aprepitant is metabolised primarily by CYP3A4 with minor metabolism by CYP1A2 and CYP2C19, and no metabolism by CYP2D6, CYP2C9, or CYP2E1.<br>References Hale, J.J., et al.: J. Med. Chem., 41, 4607 (1998), Campos, D., et al.: J. Clin. Oncol., 19, 1759 (2001), Van Belle, S., et al.: Cancer, 94, 3032 (2002), Majumdar, A.K., et al.: J. Clin. Pharmacol., 46, 291 (2006),<br></p>

<p>Applications A metabolite of Irbesartan (M8).<br>References Cazaubon, C., et al.: J. Pharmacol. Exp. Ther., 265, 826 (1993), Eberhardt, R., et al.: J. Clin. Pharmacol., 33, 1023 (1993), Huskey, S., et al.: Drug Metab. Dispos., 21, 792 (1993), van Den Meiracker, A., et al.: Hypertension, 25, 22 (1995),<br></p>

<p>Applications 5-Chloro-N-methylthiophene-2-carboxamide is an impurity of Rivaroxaban (R538000), which is a novel antithrombotic agent. A highly potent and selective, direct FXa inhibitor.<br>References Ansell, J., et al.: Drugs, 64, 1 (2004), Eriksson, B., et al.: J. Thromb. Haemost., 3, 103 (2005), Kubitza, D., et al.: Clin. Pharmacol. Ther., 78, 412 (2005),<br></p>

<p>Applications Nicoboxil is a medication used in the treatment of acute non-specific low back pains.<br>References Gaubitz, M., et al.: Eur. J. Pain , 20, 263 (2016),<br></p>

<p>Applications Tipiracil Hydrochloride serves as a treatment for metastatic colorectal cancer (mCRC). A thymidine phosphorylase inhibitor.<br>References Sugita, K., et al.: Oncol., 91, 224-230 (2016); van der Velden, D. L., et al.: Clin. Cancer Res., 22, 2835-2839 (2016)<br></p>

<p>Applications 5-Acetyl-2-propyl-1H-Imidazole-4-carboxylic Acid Ethyl Ester is used in the synthetic preparation of imidazole-5-carboxylic acids bearing alkyl, alkenyl, and hydroxyalkyl substituents at the 4-position and their related compounds.<br>References Yanagisawa, H., et al.: J. Med. Chem., 39, 323 (1996);<br></p>

<p>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).<br>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),<br></p>

<p>Stability Hygroscopic<br>Applications Intermediate in the preparation of D-threo-Methylphenidate (Ritalin)<br></p>

<p>Applications Olmesartan intermediate.<br>References Yanagisawa, H., et al.: J. Med. Chem., 39, 323 (1996),<br></p>

<p>Applications 5-(4-methylphenyl)imidazolidine-2,4-dione (cas# 69489-37-8) is a useful research chemical.<br></p>

<p>Stability -20°C Freezer<br>Applications Ebastine N-Oxide is an impurity of Ebastine (E320000). Ebastine impurity F and G (mixture of cis/trans).<br>References Yardley, J., et al.: J. Med. Chem., 33, 2899 (1990), Johnson, R., et al.: J. Antibiot., 49, 788 (1996), Takekawa, K., et al.: Xenobiotica, 31, 11 (2001), Chen, Z., et al.: Bioorg. Med. Chem. Lett., 14, 5275 (2004),<br></p>

<p>Applications USP Paroxetine Related Compound E Mixture is a reference standard composed of Paroxetine Hydrochloride (P205750) spiked with 4-(4-Fluorophenyl)-1,2,3,6-tetrahydro-1-methyl-pyridine Hydrochloride (F595220). Paroxetine Hydrochloride (P205750) is a selective serotonin reuptake inhibitor. Used as an antidepressant. 4-(4-Fluorophenyl)-1,2,3,6-tetrahydro-1-methyl-pyridine Hydrochloride (F595220) is the active metabolite of 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) (M325910), N-Methyl-4-phenylpyridinium (MPP+), selectively destroys the dopaminergic neurons and induces the symptoms of Parkinson's disease.<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 Lassen, J.B.: Eur. J. Pharmacol., 47, 351 (1978), Lund, J., et al.: Acta Pharmacol. Toxicol., 51, 351, (1982); Gerlach, M., et al.: Eur. J. Pharmacol., 208, 273 (1991), Tipton, K., et al.: J. Neurochem., 61, 1191 (1993), Wimalasena, D., et al.: J. Biol. Chem., 279, 15298 (2004),<br></p>

<p>Applications An oxidative metabolite of Dasatinib (M24 metabolite); used in the treatment of cancers and immune diseases. It is a COVID19-related research product.<br>References Jaworski, T., et al.: Xenobiotica, 21, 1451 (1991), Shah, N., et al.: Science, 305, 399 (2004), O'Hare, T., et al.: Cancer Res., 65, 4500 (2005), Das, J., et al.: J. Med. Chem., 49, 6819 (2006), Christopher, L., et al.: Drug Metab. Dispos., 36, 1341 (2008),<br></p>

<p>Applications 4,5-Dichlorothiophene-2-carboxylic Acid is used in the preparation of compounds that have therapeutic BACE1 and BACE2 inhibitors which are used for the treatment of Alzheimer’s disease, type 2 diabetes and other metabolic disorders.<br>References Banner, D., et al.: PCT Int. Appl., 2011:1438553 (2013)<br></p>

<p>Impurity Bicalutamide EP Impurity K / Bicalutamide EP Impurity L<br>Applications 3,3'-Sulfonylbis(N-(4-cyano-3-(trifluoromethyl)phenyl)-2-hydroxy-2-methylpropanamide) is an impurity of Bicalutamide (B382000); a non-steroidal peripherally active antiandrogen. Also used as an antineoplastic (hormonal).<br>References Tucker, H., et al.: J. Med. Chem., 31, 954 (1988); Cockshott, I.D., et al.: Eur. Urol., 18, Suppl. 3, 10 (1990); Cockshott, I., et al.: Br. J. Clin. Pharm., 36, 339 (1993); McKillop, D., et al.: Xenobiotica, 25, 623 (1995)<br></p>

<p>Applications O-Desmethyl Methylphenidate Carboxylic Acid is a derivative of Methylphenidate Hydrochloride (M325880), controlled substance (stimulant). CNS stimulant. Methylphenidate Carboxylic Acid Hydrochloride is a 4:1 Mixture of R533105 (DL-erythro Ritalinic Acid Hydrochloride) and R533110 (DL-threo-Ritalinic Acid Hydrochloride)<br>References Greenblatt, E.N., et al.: J. Pharmacol. Exp. Ther., 131, 115 (1961), Padmanabhan, G.R., Anal. Profiles Drug Subs., 10, 473 (1981), Srinivas, N.R., et al.: Pharm. Res., 10, 14 (1993),<br></p>

<p>Impurity Rizatriptan EP Impurity I<br>Applications N10-Monodesmethyl Rizatriptan (Rizatriptan EP Impurity I) is a metabolite of Rizatriptan.<br>References Dechant, K., et al.: Drugs, 43, 776 (1992), Castro, J., et al.: Bioorg. Med. Chem. Lett., 3, 993 (1993), Lee, Y., et al.: Biopharm. Drug Dispos., 19, 577 (1998), Chen, J., et al.: J. Pharm. Biomed. Anal., 35, 639 (2004),<br></p>

<p>Applications 1-Methyl-1H-indazole-3-carboxylic Acid Anhydride is an impurity of Granisetron (G780000), a specific serotonin (5HT3) receptor antagonist and a antiemetic agent.<br>References Kilpatrick, G.J., et al.: Nature, 330, 746 (1987); Durig, T., et al.: J. Pharm. Sci., 86, 1092 (1997); Yuasa, H., et al.: Chem. Pharm. Bull., 44, 1361 (1996); Vishnu, E.V.R., et al.: Lett. Org. Chem., 8, 722 (2011);<br></p>

<p>Applications Desmethyl-N-propyl Imiquimod is a pharmacologically active compound related to Imiquimod (I475000), an immune response modifier. It stimulates the production of Interferon-a.<br>References Megyeri, K., et al.: Mol. Cell Biol., 15, 2207, (1995), Witt, P.L., et al.: Cancer Res., 53, 5176 (1993), Edwards, L., et al.: Arch. Dermatol., 134, 25 (1998); Gerster, J. et al.: J. Med. Chem., 48, 3481 (2005);<br></p>

<p>Applications 4-[4-[(5R)-5-(Aminomethyl)-2-oxo-3-oxazolidinyl]phenyl]-3-morpholinone Hydrochloride is an intermediate in the synthesis of ent-Rivaroxaban (R538005), the R-isomer of Rivaroxaban (R538000), which is a novel antithrombotic agent.<br>References Eriksson, B., et al.: J. Thromb. Haemost., 3, 103 (2005), Kubitza, D., et al.: Clin. Pharmacol. Ther., 78, 412 (2005),<br></p>

<p>Applications 3-(4-Phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine is a useful synthetic intermediate in the synthesis of Ibrutinib (I124970); a highly selective Bruton’s tyrosine kinase (BTK) irreversible inhibitor.<br>References MacGlashan, D., et. al.: Int. Immunol., 11, 475 (2011); Li, X., et al.: J. Med. Chem., 58, 9625 (2015)<br></p>

<p>Applications Benzo[b]thien-2-yl ketone is an impurity of Zileuton (Z420000), an inhibitor of 5-lipoxygenase that is used to treat patients with asthma. Benzo[b]thien-2-yl ketone is used as a reagent to synthesize Bis(1H-2-indolyl)methanone, compounds that inhibit the activity of growth factor receptor kinase. Benzo[b]thien-2-yl ketone is also used as a reagent to prepare annulated oligothiophenes, compounds that are used in organic light-emitting devides (OLEDs).<br>References Israel, E., et al.: JAMA, 275, 931 (1996); Mahboobi, S., et al.: J. Med. Chem., 45, 1002 (2002); Mitschke, U. &amp; Bäuerle, P.: J. Chem. Soc. Perk. Trans., 1, 740 (2001); Nenajdenko, V., et al.: Russ. Chem. Bull., 61, 1456 (2012)<br></p>

<p>Applications A labelled selective 5-HT4 receptor agonist. Gastroprokinetic.<br>References Yoshida, N., et al.: Arch. Int. Pharmacodyn. Ther., 300, 51 (1989), Yatera, S., et al.: Japan. Pharmacol. Ther., 21, 21 (1993), Ruth, M., et al.: Aliment Pharmacol. Ther., 12, 35 (1998),<br></p>

<p>Impurity Sulpiride EPimpurity C<br>Applications ethyl 2-methoxy-5-sulfamoylbenzoate (cas# 33045-53-3) is a useful research chemical.<br></p>

<p>Applications Vardenafil Intermediate.<br>References Terrett, N.K., et al.: Bioorg. Med. Chem. Lett., 6, 1819, (1996)<br></p>

<p>Applications Ambrisentan intermediate.<br>References Amberg, W., et al.: J. Med. Chem., 42, 3026 (1999),<br></p>

<p>Applications 4,5-Dehydro Apixaban is an impurity of Apixaban (A726700), a potent, direct, selective, and orally active inhibitor of coagulation factor Xa. It is a potential new oral coagulant that may be useful prevention of venous thromboembolism in total hip, knee replacement orthopedic surgery and stroke in treatment of patient with venous thromboembolic disorder or with atrial fibrillation<br>References Luettgen, J.M. et al.: J. Enz. Inhib. Med. Chem., 26, 514 (2011); Glanis, T. et al.: J. Thromb. Thrombol., 31, 310 (2011); barrett, Y.C. et al.: Thromb. Haemos., 105, 181 (2011)<br></p>

<p>Applications 5’-Oxo Amisulpride is an impurity of the dopamine receptor antagonist Amisulpride (A633250).<br></p>

<p>Stability Hygroscopic<br>Applications Tavaborole is a topical treatment of toenail onychomycosis.<br>References Toledo-Bahena, M.E. et. al.: J. Drugs Dermatol., 13, 1124 (2014)<br></p>

<p>Applications A dihydropyridine calcium channel blocker. Enantiomer R of Felodipine.<br>References Berntsson, P.B., et al.: Acta Pharm. Suec., 18, 221 (1981), Kratochwil, N., et al.: Biochem. Pharmacol., 64, 1355 (2002), O'Brien, S., et al.: J. Med. Chem., 48, 1287 (2005), Castilho, M., et al.: Bioorg. Med. Chem., 14, 516 (2006),<br></p>

<p>Stability Hygroscopic<br>Applications Bendamustine (B132500) impurity.<br></p>

<p>Applications Lodoxamide-15N2,d2 is the labelled form of Lodoxamide which is an antiallergic drug that acts as a mast cell stabilizer. It is effective in the treatment of allergic conjunctivitis and in decreasing vascular permeability.<br>References Ciprandi, G., et al.: Allergy, 51(12), 946-951 (1996); Bayer, Atilla., et al.: Ophthalmologica, 217(2), 119-123 (2003)<br></p>

<p>Impurity Losartan EP Impurity I<br>Applications Losartan Trityl Ether (Losartan EP Impurity I) is an impurity of Losartan.<br>References Duncia, J.V., et al.: J. Med. Chem., 33, 1312 (1990),<br></p>

<p>Applications N-tert-Butyl-3-isopropyl-5-oxo-4,5-dihydro-1H-1,2,4-triazole-1-carboxamide is a metabolite of Amicarbazone (A605040); a triazolinone herbicide with a broad spectrum of weed control.<br>References Dayan, F., et al.: Weed Science, 57, 579 (2009); Elmore, M., et al.: Weed Technol., 27, 596 (2013); Dong, M., et al.: J. Sep. Sci., 38, 2245 (2015)<br></p>

<p>Impurity Rivastigmin USP Related Compound B<br>Applications N-Desethyl N-Methyl rac-Rivastigmine (Rivastigmin USP Related Compound B) is an impurity in the synthesis of Rivastigmine (R541000) a brain selective acetylcholinesterase inhibitor. Nootropic.<br>References Rosler, M., et al.: Brit. Med. J., 318, 633 (1999), Enz, A., et al.: Prog. Brain Res., 98, 431 (1993),<br></p>

<p>Applications A labelled glucuronide metabolite of Diphenhydramine (D486900) in humans.<br>References Breyer-Pfaff, U., et al.: Drug Metab. Dispos., 25, 340 (1997),<br></p>

<p>Stability Moisture Sensitive<br>Applications 4-​Amino-​2-​fluoro-​N-​methylbenzamide acts as a reagent in the design, synthesis and biological evaluation of novel 5-oxo-2-thioxoimidazolidine derivatives as potent androgen receptor antagonists. Also, in the preparation and structure-activity relationship of chiral benzyloxypyridinone derivatives as c-Met kinase inhibitors<br>References Ivachtchenko, A. V., et al.: Eur. J. Med. Chem., 99, 51 (2015); Zhang, D., et al.: Bioorg. Med. Chem. Lett., 23, 2408 (2013)<br></p>

<p>Applications Valdecoxib Sulfonic Acid is a metabolite of the potent and specific inhibitor of cyclooxygenase-2, Valdecoxib (V090000).<br>References Zhang, J.I. et al.: Drug Metab. Dispos., 31, 491 (2003); Yuan, J.J. et al.: Drug Metab. Dispos., 30, 1013 (2002);<br></p>

<p>Applications 1,3-Dichloroacetone (cas# 534-07-6) is a compound useful in organic synthesis.<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 3-Chlorobenzyl Cyanide is a useful synthetic intermediate. It was used to design EGFR Tyrosine Kinase Inhibitors. It can also be used to synthesize imidoyl thioureas as non-nucleoside reverse transcriptase inhibitors.<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 Traxler, P., et al.: J. Med. Chem., 42, 1018 (1999); Ludovici, D., et al.: Bioorg. Med. Chem. Lett., 11, 2225 (2001)<br></p>

<p>Impurity Vigabatrin USP Related Compound A<br>Applications Vigabatrin (V253000) impurity. Vigabatrin USP Related Compound A.<br>References Durham, S. et al.: Drug Metab. Dispos. 21, 480 (1993).<br></p>

<p>Applications Nafronyl 2-(Ethyl(nitroso)amino) is an impurity of Nafronyl (N215000). Nafronyl is a selective inhibitor of serotonin receptors. Nafronyl is a vasodilator used in the treatment of intermittent claudication.<br>References Fontaine, et al.: Chim. Ther., 4, 44 (1969), Bessin, P., et al.: Eur. J. Med. Chem., 10, 291 (1975), Clyne, C.A., et al.: Br. J. Surg., 67, 347 (1980),<br></p>

<p>Applications An oxidative metabolite of Dasatinib (M6 metabolite); used in the treatment of cancers and immune diseases. It is a COVID19-related research product.<br>References Jaworski, T., et al.: Xenobiotica, 21, 1451 (1991), Shah, N., et al.: Science, 305, 399 (2004), O'Hare, T., et al.: Cancer Res., 65, 4500 (2005), Das, J., et al.: J. Med. Chem., 49, 6819 (2006), Christopher, L., et al.: Drug Metab. Dispos., 36, 1341 (2008),<br></p>