Pharmaceutical Standards

Impurity Candesartan Impurity
Applications A byproduct formed during the synthesis of labelled Candesartan.
References Kubo, K., et al.: J. Med. Chem., 36, 2182 (1993)

Applications (S)​-4-​[(Methoxycarbonyl)​amino]​-5-​hexenoic Acid Ethyl Ester is an intermediate in synthesizing (S)-Vigabatrin (V253000), a novel anti-epileptic drug. Antidepressant; antipsychotic; anxiolytic.
References Vajda, F., et al.: Clin. Neurosci., 7, 88 (2000); Beghi, E., et al.: Lancet. Neurol., 3, 618 (2004); Sagirli, O., et al.: J. Pharmaceut. Biomed., 42, 618 (2006);

Applications 3-Chloro-2,7-naphthalenedisulfonic Acid is an intermediate used in the synthesis of 2,3,6-Trichloronaphthalene (T774070), which can bind to the aryl hydrocarbon receptor (AhR) and induce a wide range of pleotrophic effects.
References Petrulis, J., et al.: Toxicol. Lett., 105, 251 (1999), Hilscherova, K., et al.: Environ. Sci. Pollut. Res., 7, 159 (2000),

Applications 5’-Deoxy-2’,3’-O-isopropylidene-5-fluorouridine-13C,15N2 is a compound useful in organic synthesis.

Applications 2'-Bromoacetanilide is used as a reagent in the preparation of furan-2-ylmethylene thiazolidinediones as novel, potent, and selective inhibitors of phosphoinositide 3-kinase γ.
References Pomel, V., et al.: J. Med. Chem., 49, 3857 (2006);

Applications p-Chloroacetophenone is a chemical reagent used in the synthesis of various pharmaceutically and biologically active compounds such as COX-2 inhibitors.
References Penning, T. et al.: J. Med. CHem., 40, 1347 (1997); Wolfe, J. et al.: Angew. Chem. Int. Ed., 38, 2413 (1999);

Applications 2’,3’,5’-Tri-O-acetyl Guanosine-13C2,15N is an intermediate in the synthesis of 8-Aminoguanosine-13C2,15N (A609877). 8-Aminoguanosine-13C2,15N is an isotopic labelled compound of 8-Aminoguanosine (A609875), which is a potent inhibitor of purine nucleoside phosphorylase.
References Kazmers, I.S., et al.: Science, 214, 1137 (1981); Chern, J-W., et al.: J. Med. Chem., 36, 1024 (1993)

Applications 5-Chloro-2-methoxy-benzoic Acid Methyl Ester-13C2,d6 (cas# 1794737-29-3) is a compound useful in organic synthesis.

Applications (2R,​3E)​-2,​4-​Dimethyl-​2-​[(1-​oxopropyl)​thio]​-​3,​5-​hexadienoic Acid Ethyl Ester is an intermediate in synthesizing (R)-(+)-Thiolactomycin (T350880). It is a natural product inhibitor of β-Ketoacyl-AcpM Synthase A (KasA). It inhibits the synthesis of mycolic acid which is a major cell wall component of Mycobacterium tuberculosis. Also an inhibitor of D-Aspartate oxidase (DDO).
References Kapilashrami, K., et al.: J. Biol. Chem., 288, 6045 (2013); Paneerselvam, V., et al.: J. Pharm. Res., 4, 4618 (2011); Katane, M., et al.: Biochimie, 92, 1371 (2010)

Stability Temperature Sensitive
Applications This compound contains 10-20% of the alpha isomer. The exact amount has not been quantified.

Applications 2-tert-Butyl-1,3-diisopropylisourea is a useful synthetic intermediate in the synthesis of 5-Oxo Atorvastatin tert-Butyl Ester (O847160) which is a Boc-protected derivative of Atorvastatin (A791750, Ca Salt). 2-tert-Butyl-1,3-diisopropylisourea is also used as a reagent in the total synthesis of Citrafungin A which is an antifungal natural product.
References Kearney, A.S., et al.: Pharm. Res., 10, 1461 (1993); Heinonen, T.M., et al.: Clin. Ther., 18, 853 (1996); Whitfield, L.R., et al.: Eur. J. Drug Metab. Pharmacokinet., 25, 97 (2000); Calo, F., et al.: J. Org. Chem., 73, 9692 (2008)

Applications 1,2-Dimethylisothiourea-HI (cas# 41306-45-0) is a useful research chemical.

Applications N-Nitro-S-methylisothiourea-13C is an intermediate used in the synthesis of Clothianidin-d3, 13C1 (C588502), which is the isotope labelled analog of Clothianidin. Clothianidin is a neonicotinoid insecticide for use in food crops.
References Kamel, A., et al.: J. Agric. Food Chem., 58, 5926 (2010), Lynd, L., et al.: Energy Environ. Sci., 3, 1150 (2010), Cresswell, J., et al.: Ecotoxicology, 20, 149 (2011),

Applications 2-​Ethyl-​2,​5-​dihydro-​4-​hydroxy-​3-​methyl-​5-​oxo-2-​furancarboxylic Acid Methyl Ester is an by-product intermediate formed during the synthesis of 4,5-Dimethyl-3-hydroxy-2(5H)-furanone (D473600), a fragrant compound that is a key indicator of maple syrup urine disease, a disorder affecting newborn children that is the result of its inability to properly metabolize Valine (V094205), Leucine (L330110) and Isoleucine (I820175). 4,5-Dimethyl-3-hydroxy-2(5H)-furanone is naturally found in fenugreek seeds, and is an odourant present in sherry wines.
References Blank, I., et al.: Prog. Flav. Prec. Stud., No vol. given, 103 (1993); Guerra, P. & Yaylayan, V.: J. Agr. Food Chem., 59, 4699 (2011); Mackenzie, D. & Woolf, L.: Brit. Med. J., 1, 90 (1959); Podebrad, F., et al.: J. Inh. Metab. Dis., 22, 107 (1999)

Applications An intermediate for the synthesis of the metabolite of Flurbiprofen, an anti-inflammatory used as an analgesic.

Applications (2E,6Z,8E)-2,6,8-Decatrienoic Acid Methyl Ester is an spilanthol (S681850) related amide found from Acmella ciliata.
References Martin, R., et al.: Phytochem., 23, 1781 (1984);

Applications Propylene Glycol 2-β-Glucopyranosiduronic Acid Benzyl Ester-d6 is an intermediate in the synthesis of Isotope labelled Propylene Glycol 2-Glucuronide which is a metabolite of propylene glycol, used in the synthesis of N-terminal kinase inhibitors with cellular activity. Acts as a solvent for various pharmaceutical compounds.
References Szczepankiewicz, B. et al.: J. Med. Chem., 49, 3563 (2006); Mateus, R. et al.: Int. J. Pharm., 444, 106 (2013);

Applications N-Nitro-N'-[(tetrahydro-3-furanyl)methyl]carbamimidothioic Acid Methyl Ester is an intermediate in the synthesis of Dinoteturan (D482100), a neonicotinoid insecticide.

Applications α-Ionol derivative.