Building Blocks

<p>Applications A metabolite of Tryptophan. 5-Hydroxytryptophan (5-HTP) is a direct 5-hydroxytryptamine (5-HT) precursor used to assess central serotonergic function.<br>References Gartside, S., et al.: Eur. J. Pharmacol., 179, 103 (1990), Gijsman, H., et al.: J. Clin. Psychopharmacol., 22, 183 (2002), Schruers, K., et al.: Psychiatry Res., 113, 237 (2002),<br></p>

<p>Stability Volatile<br>Applications 1-Chloro-2-methylpropene is a reagent in the synthesis of pyrrolyl and indolyl diketo acids and esters as nucleotide-competitive non-nucleoside inhibitors of terminal deoxynucleotidyl transferase.<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 Costi, R., et al.: J. Med. Chem., 56, 7431 (2013);<br></p>

<p>Stability Volatile<br>Applications 5-Chloro-2-pentanone was used in the preparation of destructible surfactants.<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 Jaeger, D.A., Frey, M.R.: J. Org. chem., 47, 311 (1982)<br></p>

<p>Applications (R)-2-Methylbutyric Acid is a metabolite of Ethyl (E)-2-methyl-2-butenoate (Ethyl tiglate), an important aroma compound in apples.<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 Ikeda, Y., et al.: J. Biol. Chem., 258, 9477 (1983), Schumacher, K., et al.: J. Agric. Food Chem., 46, 4496 (1998), Beuerle, T., et al.: Lipids, 34, 375 (1999),<br></p>

<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 (S)-3-Amino-4-(2,4,5-trifluorophenyl)butanoic Acid Hydrochloride is used as a reagent in the synthesis of valuable β-amylalkyl-β-amino acid enantiomers.<br>References Tasnadi, G., et al.: Org. Biomol. Chem., 8, 793 (2010)<br></p>

<p>Applications 2-Chloro-N-phenylacetamide is used as a reagent in the synthesis of indolylmethylene benzo[h]thiazolo[2,3-b]quinazolinones which exhibit anticancer and antimicrobial activities in vitro.<br>References Gali, R., et al.: Bioorg. Med. Chem. Lett., 24, 4239 (2014)<br></p>

<p>Applications L-Selenomethionine promotes cell cycle progression and is known to elevate the expression of the antioxidant enzymes thioredoxin reductase, glutathione reductase, and glutathione peroxidase. It has also been shown to selectively induce apoptosis in LNCaP prostate cancer cells without affecting non-cancerous cells.<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 Zeng, H., et al.: J. Nutr., 132, 674 (2002); Sayed, W., et al.: Toxicol. In Vitro, 21, 157 (2007); Jornot, L., et al.: Biochem. J., 306, 581 (1995); Stewart, J., et al.: Nutr. Cancer, 60, 826 (2008)<br></p>

<p>Applications N-[(9H-Fluoren-9-ylmethoxy)carbonyl]-N-methyl-L-alloisoleucine, is a building block used in the synthesis of Ecumicin, which is a the potent anti-mycobacterial cyclic depsipeptide natural product.<br>References Hawkins, P. et al.: Organic Letters, Vol. 20, P: 1019-1022 (2018)<br></p>

<p>Applications NN'-Bis(2-hydroxyethyl)urea (cas# 15438-70-7) is a useful research chemical.<br></p>

<p>Stability Hygroscopic<br>Applications 2-Hydroxy-1-phenyl-1-propanone is a reagent used in the synthesis of heterocycles via heterocyclization of α-hydroxyarylketones.<br>References Li, G. et al.: Org. Lett., 18, 4526 (2016);<br></p>

<p>Applications 2-(Diphenylmethoxy)-N-ethylamine (cas# 17349-94-9) is a compound useful in organic synthesis.<br></p>

<p>Stability Hygroscopic<br>Applications Diphenyltin Dichloride belongs to a class of organotin compounds that are commonly used as pesticides, fungicides, and plastic additives. It is an environmental pollutant with potential antitumor activity.<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 Khosa, R.L. et al.: Sci. Cult., 35, 637 (1969); Hamasaki, T. et al.: Mutat. Res. Gen. Toxicol. Test., 300, 265 (1993); Peng, J.: Yaox. Xueb., 29, 406 (1994)<br></p>

<p>Applications 1,3,5-Tribromobenzene-d3 (CAS# 52921-77-4) is a useful isotopically labeled research compound.<br></p>