Amino Acids (AA)

<p>Applications 5-Methylfuran-2(3H)-one is an aromatic compound responsible for the aroma of caramel, dried and roated nori, wine, and brewed coffee.<br>References Paravisini, L., et. al.: Flavour Frag. J., 27, 424 (2012); Shu, N., Shen, H.: Flavour Frag. J., 27, 157 (2012); Chin, S., et. al.: J. Chrom. A, 1218, 7487 (2011)<br></p>

<p>Applications 3-(2-Methoxy-5-methylphenyl)-3-phenyl-propanoic Acid (cas# 109089-77-2) is a compound useful in organic synthesis.<br></p>

<p>Stability Hygroscopic<br>Applications 5-Methyl-2-furanmethanol (cas# 3857-25-8) is a compound useful in organic synthesis.<br></p>

<p>M06199 - BOC-SER(TBU)-OH DCHA</p>

<p>Applications 4′-Methylpropiophenone is a chemical reagent used in electrocarboxylation reactions.<br>References Zhang, K. et al.: Chin. J. Chem., 28, 509 (2010); Zhao, S. et al.: Tetra. Lett., 52, 2702 (2011);<br></p>

<p>M02961 - H-Phe-OH</p>

<p>Impurity Cyclobenzaprine USP Related Compound A<br>Applications 5-Hydroxy-N-methylprotriptyline acts as a reducing agent in chemical reactions. Cyclobenzaprine USP Related Compound A.<br>References Gribble, G. et al.: Synthesis., 3, 172 (1977);<br></p>

<p>Applications 2,3-Dihydroxy-2-methylbutanoic Acid Sodium Salt is a useful research chemical.<br></p>

<p>Applications (2E)-3-Methyl-1,3-benzothiazol-2(3H)-one Hydrazone Hydrochloride is used in method for synthesizing Methylbenzothiazolinone Hydrazone Hydrochloride Hydrate.<br>References Chen, W., et al.: Faming Zhuanli Shenqing, (2020);<br></p>

<p>Applications 5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-N-(2-methyl-1-oxopropyl)-guanosine is used to prepare ppGpp analogs as inhibitors of RelA from Gram-negative/-positive bacteria. It is also used to synthesize guanosine 5'-conjugates as initiator molecules for transcription priming.<br>References Wexselblatt, E., et al.: Bioorg. Med. Chem., 18, 4485 (2010); Wolf, J., et al.:Org. Biomol. Chem., 6, 899 (2008)<br></p>

<p>Applications 3,5-Diiodo-DL-tyrosine is used for diagnosis of hypothyroidism caused by DEHAL1 gene defects.<br>References Encinas, S., et al.: Chem. Res. Toxicol., 11, 946 (1998), Daneshvar, A., et al.: Chemosphere, 80, 301 (2010), Eriksson, J., et al.: Photochem. Photobiol., 86, 528 (2010),<br></p>

<p>Applications 2-Methyl-5-nitrophenol is used as a reactant in the preparation of pyranocarbazole alkaloids.<br>References Zang, Yingda, et al.: Euro. J. of Med. Chem., 143, 438-448 (2018)<br></p>

<p>Applications Glycyl-L-tyrosine<br></p>

<p>Applications An essential amino acid found in naturally produced peptides. Unlike its stereoisomer, L-tryptophan, it is not used in structural or enzyme proteins.<br>References Karunakaran, S.et al.: Bochem. J., 414, 343 (2008); Pallaghy, P.K. et al.: Biochem., 38, 11553 (1999);<br></p>

<p>Applications N-Benzyloxycarbonyl L-Threonine Amide O-Methanesulfonate (cas# 80082-51-5) is a compound useful in organic synthesis.<br></p>

<p>Applications Pipecolic acid is involved in synaptic transmission in the central nervous system.<br>References Nomura Y., et al.: Neurochem. Res., 6, 391 (1981),<br></p>

<p>Applications D-Tyrosine, the stereoisomer to L-Tyrosine (T899975), is an amino acid used in various organic syntheses for antibiotics. It is used in the synthesis of (-)-anisomycin, as well as BATSI (boronic acid transition state inhibitors) which act on β-lactamases. It has also been studied as an inhibitor of microbial growth on surfaces, reducing microbial attachment to hydrophillic glass and hydrophobic polypropylene surfaces.<br>References Li, Ji. et al.: Chin. Chem. Lett., 23, 647 (2012); Xu, H. et al.: Water Res., 45, 5796 (2011); Ke, W. et al.: Antimicrob. Agents Chemother., 55, 174 (2011);<br></p>

<p>Applications 4-Amino-2-methyl-5-pyrimidinemethanesulfonic acid is used in the biosynthesis of Thiamine (T344185) in yeast.<br>References White, R., et al.: Journal of the American Chemical Society, 104, 4934 (1982).<br></p>

<p>Applications N-Methylcytisine (cas# 486-86-2) is a compound useful in organic synthesis.<br></p>

<p>Applications 2-Methyl-4-oxo-4-phenylbutyric Acid is a chemical reagent used in the synthesis of various pharmaceutically active compounds. Used in the synthesis of Minozac, a suppressor of brain proinflammatory cytokine up-regulation.<br>References Hu, W. et al.: Bioog. Med. Chem. Lett., 17, 414 (2007); Qabaja, G. ET AL.: J. ORG. CHEM., 80, 133 (2015);<br></p>

<p>Stability Air Sensitive<br>Applications N-Methyl-L-cysteine Hydrochloride is an intermediate used to prepare analogs of pyochelin (P840365), a siderophore of Pseudomonas aeruginosa.<br>References Rivault, F., et al.: Tetrahedron, 60, 12139 (2004); Noel, S., et al.: Bioorgan. Chem. Lett., 24, 132 (2014); Ankenbauer, R., et al.: J. Bacteriol., 170, 5344 (1988)<br></p>

<p>Applications N,O-Dibenzoyl-DL-tyrosyl-N',N'-dipropylamide is a metabolite of the antispasmodic agent Tiropramide (T446900). Tiropramide impurity B.<br>References Janssen, et al.: J. Pharm. Pharmacol., 9, 381 (1956), Bertaccini, et al.: Br. J. Pharmac., 34, 310 (1968),<br></p>

<p>Applications 2-Methoxy-5-(methylsulfonyl)benzoic acid (cas# 50390-76-6) is a useful research chemical.<br></p>

<p>Applications (E)-Ethyl 4-Bromo-3-methyl-2-butenoate (cas# 51318-62-8) is a compound useful in organic synthesis.<br></p>

<p>Applications 2-Methoxypropanol is a susbtance used in the relative parameter sensitivity in prenatal toxicity studies with substances classified as developmental toxicants. Also applied in the studies for the analysis of volatile organic compounds in cigarette packaging materials by SPME-GC/MS.<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 Rorije, E., et al.: Reprod. Toxicol., 34, 284 (2012); Hong, W, et al.: Fujian Fenxi Ceshi, 19, 24 (2010)<br></p>

<p>Impurity Rifaximin EP Impurity A<br>Applications 2-Amino-4-methylpyridine (Rifaximin EP Impurity A) is an impurity of Rifaximin.<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 A major metabolite of non-essential amino acid L-Cysteine.<br>References Parsons, R.B. et al.: Neurotoxicol., 19, 599 (1998);<br></p>

<p>Applications N-Methyl-L-alanine is a reactant used in the preparation of site-specific trastuzumab maytansinoid antibody-drug conjugates with improved therapeutic activity.<br>References Pillow, T.H., et. al.: J. Med. Chem., 57, 7890 (2014)<br></p>

<p>Applications D-Tyrosine-d2 is deuterium labelled D-Tyrosine (T899970). D-Tyrosine, the stereoisomer to L-Tyrosine (T899975), is an amino acid used in various organic syntheses for antibiotics. It is used in the synthesis of (-)-anisomycin, as well as BATSI (boronic acid transition state inhibitors) which act on β-lactamases. It has also been studied as an inhibitor of microbial growth on surfaces, reducing microbial attachment to hydrophillic glass and hydrophobic polypropylene surfaces.<br>References Li, Ji. et al.: Chin. Chem. Lett., 23, 647 (2012); Xu, H. et al.: Water Res., 45, 5796 (2011); Ke, W. et al.: Antimicrob. Agents Chemother., 55, 174 (2011)<br></p>

<p>Applications 2-Ethyl-4-methyl-1-pentanol is a volatile chemical that can be used to diagnose ratoon stunting disease in Sugar cane.<br>References Berna, A. Z., et al.: Pro. of the Conf. of the Austr. Soc. of Sugar Cane Tech., 37th, 150-157 (2015)<br></p>

<p>Stability Hygroscopic<br>Applications Oleoyl-L-carnitine is a long-chain fatty ester of carnitine which is accumulated and released into the circulation, in fatty-acid oxidation defects. Pattern of Oleoyl-L-carnitine can be diagnostic for a number of ß-oxidation defects.<br>References Adams, S., et al.: J. Nutrition, 139, 1073 (2009); Ventura, F., et al.: Clinica Chimica Acta, 281, 1 (1999); Pourfarzam, M., et al.: Clinical Chem,, 40, 2267 (1994); Schaefer, J., et al.: Pediatric Res., 37, 354 (1995)<br></p>

<p>Stability Hygroscopic<br>Applications Labelled 3-Aminoisobutyric Acid (A611585). Substituted β-alanines. Used for preparation and isolation of D(-)-β-aminoisobutyric acid.<br>References Kakimoto, Y., et al.: J. Biol. Chem., 236, 3288 (1961),<br></p>

<p>Stability Hygroscopic<br>Applications 3-Hydroxy-DL-kynurenine is a tryptophan metabolite. Could be associated with symptoms in Parkinson's disease.<br>References Heilman, P. L., et al.: Movement Disorders, 35, 2028 (2020)<br></p>

<p>Applications Intermediate for the preparation of Glimepiride.<br></p>

<p>Applications 6-Methyl-2-heptanol is an intermediate used to prepare tri- and tetrasubstituted imidazoles as highly potent and specific ATP-​mimetic inhibitors of p38 MAP kinase.<br>References Laufer, S., et al.: J. Med. Chem., 51, 4122 (2008)<br></p>

<p>Applications The main labelled metabolite of o-xylene.<br>References Gregus, Z., et al.: Drug Metab. Dispos., 26, 1082 (1998), Gregus, Z., et al.: Xenobiotica, 29, 547 (1999), Gonzalez-Reche, L., et al.: Arch. Toxicol., 77, 80 (2003),<br></p>

<p>Applications H-L-METHR-OH (cas# 2812-28-4) is a useful research chemical.<br></p>

<p>Applications 4,4'-Methylenebis(2,6-dimethylphenol) is used in thermosetting resin composition for the industrial manufacture of metal-clad laminates and printed circuit boards.<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 You, J., et al.: Faming Zhuanli Shenqing. 19 pp. (2019)<br></p>

<p>Applications 2-Methyl-4,6-bis(octylsulfanylmethyl)phenol (cas# 110553-27-0) is a useful research chemical.<br></p>

<p>Applications N-Acetyl-L-alanine is used as a biomarker for prostate cancer.<br>References Jansen, R., et al.: Clin. Biochem., 38, 362 (2005),<br></p>

<p>Applications N-Pivaloylglycine is used in the biological study between dogs and rats. In a high dose toxicity study of pivalic acid (PA), PA caused skeletal muscle disorder in dog, and a significant increase of pivaloyl carnitine (PC) was observed in canine muscle, but not in rat muscle.<br>References Yamaguchi, T., et al.: Toxicol. Appl. Pharmacol., 214, 61-68 (2006)<br></p>

<p>Applications Labelled L-Glutamine (G597000). L-Glutamine is an essential amino acid that is a crucial component of culture media that serves as a major energy source for cells in culture. L-Glutamine is very stable as a dry powder and as a frozen solution. In liquid media or stock solutions, however, L-glutamine degrades relatively rapidly. Optimal cell performance usually requires supplementation of the media with L-glutamine prior to use.<br>References Rivett, A., et al.: J. Biol. Chem., 260, 300 (1985), Watford, M., et al.: Metabolism, 49, 141 (2000), Wilmore, D., et al.: J. Nutr., 131, 2543S (2001),<br></p>

<p>Impurity Temozolomide USP Related Compound B<br>Applications N'-Methyl-N,N-diphenylurea is used in the stabilization of thermal propellants. Temozolomide USP Related Compound B.<br>References Bohn, M. et al.: Prop. Exp. Pyro.,et al.: 19, 266 (1994); Muthurajan, H. et al.: J. Hazard. Mat., 133, 30 (2006);<br></p>

<p>Applications L-Asparagine-d3 Hydrate is an isotope labelled L-Asparagine Hydrate, a naturally occurring amino acid that is not a essential for humans and can be synthesized from central metabolic pathway intermediates.<br>References Burda, P., et al.: Biochim. Biophys. Acta., 1426, 239 (1999); Yamane, H., et al.: Animal. Sci. J., 80, 286 (2009);<br></p>

<p>Applications trans 3-(N-Methylanilino)acrolein (cas# 34900-01-1) is a compound useful in organic synthesis.<br></p>

<p>Stability Hygroscopic<br>Applications L-Ornithine is a non-essential amino acid for human development but is required intermediate in arginine biosynthesis. L-Ornithine is found in virtually all vertebrate tissues as well as incorporated into proteins, such as tyrocidine. Isolation from chicken excreta.<br>References Fattori, D., et al.: J. Med. Chem., 50, 550 (2007), Gomez-Alonso, S., et al.: J. Agric. Food Chem., 55, 608 (2007), Subramaniam, R., et al.: Bioorg. Med. Chem. Lett., 18, 3333 (2008),<br></p>

<p>Stability Hygroscopic<br>Applications 7-CHLORO-L-TRYPTOPHAN (cas# 73945-46-7) is a useful research chemical.<br></p>

<p>Applications D-Lysine Methyl Ester is a protected form of D-Lysine (L468930). D-Lysine is the unnatural isomer of L-Lysine (L468895) that has the ability to reduce non-enzymatic glycation in vitro. D-Lysine also exists as polypeptide chains of poly-D-lysine, a nonspecific adhesion-promoting molecule that has the potential to be a polymeric drug carrier.<br>References Chen, Q. et al.: J. Biol. Chem., 269, 26602 (1994); Sensi, M., et al.: Diabetologia, 36, 797 (1993); Vermeersch, H. &amp; Remon, J.: J. Control. Rel., 32, 225 (1994)<br></p>

<p>Impurity Rabeprazole EP Impurity G<br>Applications Used in the preparation of 2-[[(2-pyridyl)methyl]thio]-1H-benzimidazoles derivatives as anti helicobacter pylori agents.<br>References Kuehler, T. et al.: J. Med. Chem., 41, 1777 (1998)<br></p>

<p>Applications 4-(1-Methylethyl)benzoic Acid is used in the synthesis of quinuclidine benzamides as agonists for nicotinic acetylcholine receptors. Also used in the synthesis of nifuroxazide analogues showing antimicrobial activity against methicillin-resistant Staphylococcus.<br>References Bodnar, A. et al.: J. Med. Chem., 48, 905 (2005); Masunari, A. et al.: Bioorg. Med. Chem. Lett., 15, 4229 (2007);<br></p>

<p>Applications N-Acetyl-S-(2,5-dimethylbenzene)-L-cysteine-d3 (cas# 1331909-07-9) is a compound useful in organic synthesis.<br>References Gonzalez-Reche, L., et al.: Arch. Toxicol., 77, 80 (2003),<br></p>

<p>Applications 2-Amino-5-chloro-3-methylbenzoic Acid is a useful research chemical for the preparation of benzoyl urea containing anthranillic acid groups with insecticidal activity.<br>References Peng, Y., et al.: Nongyao, 48, 326 (2009);<br></p>

<p>Applications VINYLTRIS(2-METHOXYETHOXY)SILANE (cas# 1067-53-4) is a useful research chemical.<br></p>

<p>Stability Hygroscopic<br>Applications Used as a substrate for methionine adenosyltransferase from rat liver.<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 Lombardini, J.B., et al.: Biochem. Pharmacol., 32(3), 489 (1983), Kajander, E., et al.: Cancer Res., 46 (6), 2866 (1986), Kajander, E., et al.: Biochem. J., 267 (3), 767 (1990)<br></p>

<p>Stability Hygroscopic<br>Applications 3-Chloro-L-tyrosine was used in the enzymatic synthesis of halogen derivatives of aromatic amino acids labeled with hydrogen isotope. 3-Chloro-L-tyrosine exhibited stronger antioxidant properties in Hb-induced oxidative stress as was evident by higher efficiency of reduction of ferryl species.<br>References Winnicka, E., et al.: J. Chem. Eng., 8, 54 (2014); Lu, N., et al.: Toxicol. In Vitro, 28, 847 (2014);<br></p>

<p>Applications (1-Chlorocyclohexyl)cyclohexyl-methanone is a synthetic intermediate and a potential reagent for the synthesis of Dicyclomine Impurity A (B382435) and Dihexyverine Hydrochloride (D448200).<br>References Cramer, R., et al.: J. Med. Chem., 47, 6777 (2004); Vilar, S., et al.: J. Med. Chem., 49, 1118 (2006); Kopp, M., et al.: B. Soc. Chim. Fr., no vol., 84 (1952); Levy, J., et al.: CR. Soc. Biol., 144, 339 (1950)<br></p>

<p>Applications 2-(6-methoxynaphthalen-2-yl)propanenitrile (cas# 86603-94-3) is a useful research chemical.<br></p>

<p>Applications 1-(4-Hydroxy-3-methoxyphenyl)-1-propanone is a derivative of Guaiacol, a precursor to various flavorants, such as eugenol and vanillin.<br>References Allen, C., et al.: Org. Synth., 3, 418 (1955); Esposito, L., et al.: Kirk-Othmer Encyclopedia of Chemical Technology, 4th edition, 24, 812 (1997)<br></p>

<p>Stability Hygroscopic<br>Applications L-Formiminoglutamic acid is a useful research chemical. It is used medically in the diagnosis of Cobalt deficiencies in Cattle and sheep.<br>References Marsh, K. B., et al.: New Zeal. J. Agric. Res., 31, 273 (1988); Quirk, M. F., et al.: J. Agric. Sci., 110, 465 (1988); Quirk, M. F., et al.: Aust. J. Agric. Res., 38, 1071 (1987)<br></p>

<p>Applications 5-methoxypentanoic acid (cas# 70160-05-3) is a useful research chemical.<br></p>

<p>Applications 4-Chloro-benzoic Acid 1-(4-Methoxyphenyl)hydrazide Hydrochloride is a derivative of (4-Methoxyphenyl)hydrazine Hydrochloride (M265880). It is a useful synthetic intermediate for the preparation of Indomethacin (I641000); a potent, time-dependent, nonselective inhibitor of the cyclooxygenase enzymes COX-1 and COX-2.<br>References Blobaum, Anna L., et al.: ACS Med. Chem. Lett., 4(5), 486-490 (2013); Prusakiewicz, Jeffery J., et al.: Biochemistry, 43(49), 15439-15445 (2004)<br></p>

<p>Applications 5'-O-Methylthymidine (cas# 14504-60-0) is a useful research chemical.<br></p>

<p>Stability Hygroscopic<br>Applications A metabolite of Melatonin (M215000).<br>References Reiter, R.J., et al.: J. Biomed. Sci., 7, 444 (2000), Chen, Z., et al.: Am. J. Physiol, 284, 1618 (2003), Barrenetxe, J., et al.: J. Physiol. Biochem., 60, 61 (2004),<br></p>

<p>Stability Moisture Sensitive<br>Applications 1-Acetate 4-Methanesulfonate 1,4-Butanediol is used in the facile cleavage of ethers. A Busulfan Impurity<br>References Mazur, Y., et al.: J. Org. Chem., 36, 532 (1971);<br></p>

<p>Applications 4,4'-Methylene-d2-dianiline (CAS# 215590-72-0) is a useful isotopically labeled research compound.<br></p>

<p>Applications 1-Ethyl-1-methylcyclopentane, is one of the chemical components of Gas-Phase organic carbon emissions from motor vehicles. It is also a volatile component of frying oils.<br>References Gentner, D. R., et al.: Environ. Sci. Tech., 47, 11937 (2013); Prevot, A. Frying Food, 155 (1988);<br></p>

<p>Applications 8-Methoxycarbonyloctanoic Acid (cas# 2104-19-0) is a compound useful in organic synthesis.<br></p>

<p>Applications Labelled analogue of an essential amino acid found in naturally produced peptides. Unlike its stereoisomer, L-tryptophan, it is not used in structural or enzyme proteins.<br>References Karunakaran, S.et al.: Bochem. J., 414, 343 (2008); Pallaghy, P.K. et al.: Biochem., 38, 11553 (1999);<br></p>