Methyl Ketone
Mostrando 1-12 de 83 artigos, teses e dissertações.
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1. Qual tipo de repelente pode ser usado por gestante?
Os produtos repelentes de uso tópico podem ser utilizados por gestantes, desde que estejam devidamente registrados na ANVISA e que sejam seguidas as instruções de uso descritas no rótulo (1). Esta é a orientação do Protocolo de vigilância e resposta à ocorrência de microcefalia relacionada à infecção pelo vírus Zika, emitido pelo Ministério
Núcleo de Telessaúde Sergipe. Publicado em: 12/06/2023
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2. Novel Greener Microwave-Assisted Deprotection Methodology for the 1,3-Dioxolane Ketal of Isatin Using Calix[n]arenes
In this work, the combined use of p-sulfonic acid-calix[n]arene and microwave energy to hydrolyze the 1,3-dioxolane ketal of isatin was evaluated with excellent results. This is the first time that p-sulfonic acid-calix[n]arene has been used as the catalyst in a ketal hydrolysis reaction and the deprotection of the ketone carbonyl of isatin is reported. The
Journal of the Brazilian Chemical Society. Publicado em: 2022
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3. An Acetal Acylation Methodology for Producing Diversity of Trihalomethyl-1,3-dielectrophiles and 1,2-Azole Derivatives
A series of functionalized 1,1,1-trihalo-4-methoxy-3-alken-2-ones [CX3C(O)CR1=CROMe, where X = F or Cl; R = n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl, n-tridecyl, (CH2)2CH=C(Me)2, (CH2)2Ph, (CH2)2-(4-HOC6H4), (CH2)2-(4-MeOC6H4), (CH2)2CO2Me, (CH2)3CO2Me, CH(SMe)CH3, CH2(2-MeOC6H4), and R1 = H, and R = H and R1 = n-decyl] were synthesized from respective
J. Braz. Chem. Soc.. Publicado em: 2020-02
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4. Beta-Ketothiolase Deficiency: Resolving Challenges in Diagnosis
Abstract Beta-ketothiolase deficiency is an inherited disorder of ketone body metabolism and isoleucine catabolism. It typically manifests as recurrent ketoacidotic episodes with characteristic abnormalities in the urinary organic acid profile. However, several challenges in the diagnosis of beta-ketothiolase deficiency have been encountered: atypical presen
J. inborn errors metab. screen.. Publicado em: 30/05/2019
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5. Optimización de un procedimiento para la determinación de oro mediante espectrofotometría UV/Vis
ABSTRACT The main objective of the research group is the recovery of valuable metals (contained in PCB’s) such as Cu, Au, Ag, Pt, Pd, etc., by hydrometallurgical alternatives to the current ones used in mining. One of the biggest difficulties that has encountered the research group is the lack of availability of an adequate, simple and reliable quantitativ
Matéria (Rio J.). Publicado em: 19/07/2018
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6. POLYESTER COMPOSITES REINFORCED WITH MALEIC ANHYDRIDE-TREATED FILAMENTS FROM MAUVE
ABSTRACT The objective of this study was to evaluate the polyester-based fiber composites reinfor ced with filaments/fibers of mauve treated with NaOH and maleic anhydride. The che mical treatment of the mauve filament/fibers (3 cm of length) was carried out, first with NaOH, followed by maleic anhydride. The resin used was ortho unsaturated polyester with a
CERNE. Publicado em: 2018-03
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7. Optimization of Auxiliary Solvent Demulsification Microextraction for Determination of Cyanide in Environmental Water and Biological Samples by Microvolume UV-Vis Spectrophotometry
A new, simple, rapid and efficient solvent terminated-auxiliary solvent-dispersive liquid-liquid microextraction (ST-AS-DLLME) technique for determination of cyanide ions by microvolume UV-Vis spectrophotometry was developed. Effective parameters on the extraction and absorbance of cyanide were optimized using two optimization methods: fractional factorial d
J. Braz. Chem. Soc.. Publicado em: 2015-06
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8. Otimização da etapa de extração do ácido clavulânico presente no caldo de fermentação utilizando misturas de solventes
The purpose of this work was to study four different solvent mixtures intended to increase the yield of the extraction stage of clavulanic acid (CA), which is one of the steps in the purification process. Four central composite rotatable designs (CCRD) were utilized to optimize the solvent mixtures. The variables selected for the factorial design were solven
Quím. Nova. Publicado em: 2014
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9. Antiulcer effect of epoxy-carvone
Epoxy-carvone is a monoterpene present in essential oils of various plants. It is a derivative of carvone, which has an epoxy group instead of the α- and β-unsaturated ketone group present in carvone. As recent studies have shown that several alcohol terpenes and compounds containing α, β-unsaturated ketone groups present antiulcer effect, the main of th
Revista Brasileira de Farmacognosia. Publicado em: 23/09/2011
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10. Selecao indireta para teor de 2-tridecanona em tomateiros segregantes e sua relacao com a resistencia a traca-do-tomateiro.
Este trabalho teve como objetivo verificar a relacao entre o teor de 2-tridecanona (2-TD) em materiais selecionados e o nivel de resistencia a traca-do-tomateiro (Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae)) em geracoes avancadas de Lycopersicon spp. derivado de cruzamentos interespecificos. Foi usada uma populacao de tomateiros segregantes (ger
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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11. Novel synthesis of primary arylamides from aryl methyl ketone oxidations using iodine in aqueous ammonia
Arilamidas primárias foram obtidas em bons rendimentos quando diversas arilmetilcetonas foram tratadas com iodo em amônia aquosa a temperatura ambiente.
Journal of the Brazilian Chemical Society. Publicado em: 2010
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12. Estudo Químico do Basidiomiceto Lentinus strigellus / Chemical study of the basidiomycete Lentinus strigellus
The chemical study of the basidiomicete Lentinus strigellus was done by the investigation of its secondary metabolites production in varied culture media, besides its utilization in the bioreduction of prochiral carbonyl compounds (ketone and - ketoester). From the liquid medium of L. strigellus grown in peptone broth, it was isolated the benzopyranes 2,2-di
Publicado em: 2009