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Desarrollo de sensores electroquímicos para la determinación de drogas sintéticas en fluidos biológicos y muestras de incautación
(2023-07-09)
La cantidad de nuevas sustancias psicoactivas, popularmente conocidas con términos como: drogas emergentes, drogas de diseño, drogas sintéticas o drogas recreativas, aumenta en el mercado global de las drogas cada año. El ...
β-Carboline monoterpenoid glucosides from Palicourea adusta
(1999)
Lyaloside, a monoterpenoid glucoindole alkaloid, was isolated from the leaves of Palicourea adusta together with a mixture of its hydroxycinnamic acid derivatives, (E)-O-(6′)-cinnamoyl-4″-hydroxy-3″-methoxy-lyaloside and ...
A New Method for the Preparation of 1-Ethynyl Ethers
(1994)
During our study of the stannylcupration of acetylenic
ethers we required [2-13C]-1 for mechanistic studies.
Existing methods for the synthesis of acetylenic ethers
involve dehydrohalogenation of 2-halo, ...
Bile salts and derivatives: Rigid unconventional amphiphiles as dispersants, carriers and superstructure building blocks
(2015)
Steroidal surfactants like bile salts have a rigid amphiphilic structure significantly different from the typical head–tail one. As a result, these molecules show peculiar features in their self-assembly behavior and ...
Photoreactivity of Oil and Alcoholic Diterpenic Varnishes: Key Role of the Polymerization Process
(2020)
he conservation of artworks is a key issue in cultural heritage. The alterations of the varnish could be linked mainly to the photopolymerization of the natural resin. The photodegrada- tion of sandarac and rosin under ...
Use of a theoretical prediction method and quantum chemical calculations for the design, synthesis and experimental evaluation of three green corrosion inhibitors for mild steel
(2020)
Three phenylmethanimine derivatives (Schiff bases) were designed after a theoretical prediction of their corrosion inhibition efficiencies and a corroboration through the use of quantum chemical calculations. The molecules ...
Concomitant prediction of environmental fate and toxicity of chemical compounds
(2020)
The environmental fate of many functional molecules that are produced on a large scale as precursors or as additives to specialty goods (plastics, fibers, construction materials, etc.), let alone those synthesized by the ...
Producción de un detergente líquido ambientalmente preferible y estrategia de lanzamiento al mercado del Valle Central Occidental de Costa Rica
(2009)
Se determinó la viabilidad de instalar una empresa de productos químicos preferibles para
el ambiente, en el cantón de Poás de Alajuela, Costa Rica. Con este propósito se seleccionó
una formulación de un detergente líquido ...
Ethyl propionate: Synergistic kairomone for african palm weevil,Rhynchophorus phoenicis L. (Coleoptera: Curculionidae)
(1994-04)
Small trunk pieces of a freshly felled 10-year-old oil palm,Elaeis quineensis (Jacq.), were placed in a modified Nalgene desiccator, and volatiles captured for six days on Porapak Q. Gas chromatographic (GC) analysis of ...
(1S,3R)-N-{(3S,10S,12S,13R,17R)-12-Hydroxy-17- [(R)-5-hydroxypentan-2-yl]-10,13-dimethylhexa- decahydro-1H-cyclopenta[a]phenanthren-3-yl}- adamantane-1-carboxamide 0.25-hydrate
(2022-10-12)
The title compound, C 35H 57 NO 3 0.25H 2O, was synthesized from deoxycholic
acid followed by a protection, a Mitsonobu substitution, a Staudinger reduction,
formation of an amide and final reduction in the lateral chain. ...