Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 1861-1880 of 4850
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(1993)A differential pulse polarographic method for the identification and quantitative determination of enoxacin is described. The method is based on the electrochemical reduction of the drug at the dropping mercury electrode. ...
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(Oxford University Press, 2011)A high-performance liquid chromatography (HPLC) method for the determination of azadirachtin (A and B) residues in bovine muscle has been developed. Azadirachtin is a neutral triterpene and chemotherapeutic agent effective ...
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(1969)Several iron (II) nitrosyl bis-dithiocarbamates have been studied by the Mössbauer and other spectroscopic methods. The Mössbauer effect has proved to be useful for studying slight changes in chemical bonding due to ...
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(Royal Society of Chemistry, 2017)© 2017 the Owner Societies. 2-Aminothiazolo[4,5-c]porphycenes are a novel class of 22-π electron aromatic porphycene derivatives prepared by click reaction of porphycene isothiocyanates with primary and secondary amines ...
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(Elsevier Ltd, 1998)
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(Sociedad Chilena de Quimica, 2017)© 2017 Sociedad Chilena de Quimica. All rights reserved. Single crystals of 1,3-bis(cyanomethoxy)calix[4]arene (1) were grown from Chloroform/Methanol mixture and these were nanodecorated with colloidal gold nanoparticles ...
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(1994)AM1 full geometry optimization of seven substituted cyclic hydroxamic acids (Hx) was performed. A qualitative correlation between Elumo vs Hammett's σP was observed. The reactivity of these 7-substituted Hx with hard ...
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(1994)We have investigated the electrocatalytic activity of vitamin B12 adsorbed on ordinary pyrolytic graphite (OPG) for the oxidation of cysteine and glutathione and for the reduction of cystine, using cyclic voltammetry and ...
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(Elsevier Inc., 2017)© 2017 Elsevier Inc. American Trypanosomiasis is a chronic infection discovered and described in 1909 by the Brazilian scientist Carlos Chagas. It is caused by the protozoan parasite Trypanosoma cruzi. Although it affects ...
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(2001)Different goat cheeses from Chile were studied by Free-Choice Profile (FCP) analysis. Generalized Procrustes Analysis (GPA) applied to FCP data permitted differentiation between samples and informed on the attributes ...
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(Sociedad Chilena de Quimica, 2001)This communication describes the application of a hollow-fiber-type solid supported liquid membrane technique to the study of recovery and enrichment of molybdenum with Alamine 336 (a long chain tertiary amine) from acid ...
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(2002)Reaction between cis-[Co(NH3)(H2O)(2)](3-) and ammonia in aqueous solution, in the presence of a carbohydrate, leads to the formation of the tetranuclear complex of cobalt (III): [Co-4(NH3)(12)(OH)(6)](6+) partially resolved. ...
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(Freund Publishing House Ltd, 2000)A straightforward synthesis of a group of 4-alkylamino-6-nitroquinolines starting from a common intermediate, 5,8-dimethoxy-6-nitro-4(1H)quinolone 3, is described. These compounds were tested in vitro as potential ...
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(Elsevier B.V., 2017)Tetra-tert-butyl-cis,cis-3,7-dihydroxybicyclo[3.3.0]octa-2,6-diene-2,4-exo-6,8-exo-tetracarboxylate (I) and tetra-tert-butyl-cis,cis-3,7-dimethoxybicyclo[3.3.0]octa-2,6-diene-2,4-exo-6,8-exo-tetracarboxylate (II) were ...
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(2010)Olive tree varieties that were cultivated only in the Mediterranean basin a few decades ago are now planted in the Southern Hemisphere as well. The chemical composition of the oils produced in countries as far distant as ...
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(1999)A synthesis of N-(2-nitrobenzyl)acetanilide (5) and (11) from 2- nitrobenzaldehyde and aromatic amines is reported. The reaction of amides (5) and (11) with iron in acetic acid-ethanol-water provided the corresponding 3- ...
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(American Chemical Society, 2015)© 2015 American Chemical Society.Rhenium complexes are versatile molecular building blocks whose tunable photophysical properties are useful in diverse opto-related applications. Herein we report the synthesis and ...
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(Elsevier Ltd, 2015)© 2015 Elsevier Ltd. All rights reserved.The multimetallic complex [[(CO)<inf>3</inf>(phen)Re(μ-Br)Re(phen)(CO)<inf>3</inf>][(CO)<inf>3</inf>Re(μ-Br)<inf>3</inf>Re(CO)<i ...
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(Royal Society of Chemistry, 2016)The [(phen)((HO)-O-2)Re(CO)(3)](+)(CF3SO3)(-) salt, 1(+)(CF3SO3-), has been crystallized in the form of two new solvates, [(phen)(H2O)Re(CO)(3)](+)(CF3SO3)(-)center dot(C4H8O)(0.5) and [(phen)(H2O)Re(CO)(3)](+)(CF3SO3)(-)center ...