Building Blocks

<p>Stability Air Sensitive, Light Sensitive, Moisture Sensitive, Temperature Sensitive<br>Applications N-Acetyl-4-benzoquinone Imine (NAPQI) is a toxic metabolite of Acetaminophen (A161220), an analgesic and antipyretic agent used as a pain reliever to treat headache, muscle aches, and arthritis (1,2,3). N-Acetyl-4-benzoquinone Imine can react with cysteine residues of hepatic proteins to yield Acetaminophen-cysteine (A161255) (4).<br>References (1) Jaeschke, H., et al.: Toxicol. Sci., 89, 31 (2006) (2) O’Malley G. F., et al.: J Med Toxicol. 11, 317 (2015)(3) McGill, M. R. and Jaeschke, H. Pharm Res. 30, 2174 (2013)(4) Frey, S. M., et al.: J Med Toxicol. 11, 218 (2015)<br></p>

<p>Applications A novel utilization of aminophenone derivative in toxicology, for treating intoxications with cyanogenic toxic substances.<br>References Donoghue, N., et al.: Eur. J. Biochem., 60, 1 (1975), Chen, Y., et al.: J. Bacteriol., 170, 781 (1988),<br></p>

<p>Impurity Anastrozole Monoacid Impurity<br>Applications Anastrozole Mono Acid is an impurity of Anastrozole (A637435), an aromatase enzyme inhibitor and antineoplastic agent. Anastrozole Monoacid Impurity<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 2-Chloroethylamine Hydrochloride is used as a reagent in the synthesis of 6-desfluoroquinolones as potential anti-HIV drugs. Also used as a reagent in the synthesis of ellipticine derivatives as anticancer agents.<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 Sancineto, L., et al.: Bioorg. Med. Chem., 22, 4658 (2014); Mori, R., et al.: Eur. J. Med. Chem., 82, 16 (2014)<br></p>

<p>Applications 2-Chloroethyl Methyl Ether is used as a reagent in the synthesis of Piperonyl Methoxyethyl Ether (P490475); a selective inhibitor of the cytochrome P450-dependent monooxygenase from the housefly.<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 Motoyama, N., et al.: Rev. Pestic. Toxicol., 1, 173 (1991)<br></p>

<p>Applications Carboxymethoxyamine Hemihydrochloride (cas# 2921-14-4) is a compound useful in organic synthesis.<br></p>

<p>Impurity Loratadine EP Impurity H<br>Applications N-Carbethoxy-4-piperidone (Loratadine EP Impurity H) is used in the preparation of 3-hydrazinopyridazines as antihypertensive agents as well as γ-carboline derivatives as potential serotonergic agents. N-Carbethoxy-4-piperidone is also an impurity of Loratadine (L469575).<br>References Schenker, E. et al.: Arsneim.-Forsch., 29, 1835 (1979); El-Kader, A. et al.: Mans. J. Pharm. Sci., 6, 1 (1989); Albu, M. et al.: J. Liq. Chrom. Rel. Technol., 32, 2569 (2009);<br></p>

<p>Applications 1-Amino-imidazolidine-2,4-dione (cas# 6301-02-6) is a useful research chemical.<br></p>

<p>Applications An impurity of the anti-convulsant (S)-Pregabalin (P704790).<br>References Lin, S. et al.: J. Liq. Chrom. Rel. Technol., 19, 2699 (1996); Sripathi, S. et al.: ARKIVOC, 10, 266 (2010);<br></p>

<p>Impurity Atenolol Impurity 3; Atenolol Impurity 1<br>Applications Atenolol Impurity 3. Atenolol Impurity 1.<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 2-Aminoethyl Sulfate, is a building block used for the synthesis of various pharmaceutical and biologically active compounds, including inhibitors and therapeutic compounds. It can be used in the preparation of Taurine (T007850).<br>References Wen-ru, Ch., et al.: Zhejiang Huagong, 42 (2011);<br></p>

<p>Stability Light Sensitive<br>Applications Protected Caffeic Acid<br>References Kurata, A., et al.: J. Biotechnol., 148, 133 (2010), Buzzi, F., et al.: Eur. J. Med. Chem., 44, 4596 (2009), Xu, G., et al.: Arch. Pharm., Res., 32, 1215 (2009),<br></p>

<p>Applications Bis(2-hydroxypropyl) Ether is commonly used as a plasticizer, an intermediate in industrial chemical reactions.<br>References Fasano, W.J., et al.: Toxicol. In. Vitro., 25, 1664 (2011); Ottavioli, J., et al.: Spectroscopy. Lett., 44, 221 (2011);<br></p>

<p>Impurity Chlorpheniramine EP Impurity B<br>Applications A metal-complexing agent; an effective iron chelating agent to help protect against UVB radiation. An impurity of Chlorpheniramine Maleate (C424300).<br>References Bissett, D. et al.: Photochem. Photobiol., 54, 215 (1991); Patel, M.H. et al.: J. Enzyme Inhib. Med. Chem., 26, 188 (2011);<br></p>