Results 71 to 80 of about 6,805 (187)

Synthesis and Anticancer Activity of Some New S-Glycosyl and S-Alkyl 1,2,4-Triazinone Derivatives

Molecules, 2011
A series of S-glycosyl and S-alkyl derivatives of 4-amino-3-mercapto-6-(2-(2-thienyl)vinyl)-1,2,4-triazin-5(4H)-one (1) were synthesized using different halo compounds such as preacetylated sugar bromide, 4-bromobutylacetate, 2-acetoxyethoxy-methyl ...
Hosam A. Saad, Ahmed H. Moustafa
doaj   +1 more source

Aqueous dissociation constants of bile pigments and sparingly soluble carboxylic acids by 13C NMR in aqueous dimethyl sulfoxide: effects of hydrogen bonding

Journal of Lipid Research, 1997
pKas for the acid dissociation of the carboxyl groups of bilirubin in water have been reported recently to be 8.1-8.4, or higher. These high values were attributed to intramolecular hydrogen bonding.
F R Trull, S Boiadjiev, D A Lightner, A F McDonagh   +3 more
doaj   +1 more source

First Insights into the Formation of Metal Soaps in Alkyd-Based Paints: A Proof-of-Concept Investigation Using FTIR Spectroscopy

Molecules
The formation of metal soaps or carboxylates in oil paintings is a widely studied topic. Expanding upon the extant research on the subject, this work investigates the formation of metal soaps as pertaining to alkyd-based media.
Tommaso Poli, Michael P. Haaf, Anna Piccirillo, Abby P. Costa, Rebecca L. Craig, Federica Pozzi   +5 more
doaj   +1 more source

Preliminary Screening on Antibacterial Crude Secondary Metabolites Extracted from Bacterial Symbionts and Identification of Functional Bioactive Compounds by FTIR, HPLC and Gas Chromatography–Mass Spectrometry

Molecules
Secondary metabolites, bioactive compounds produced by living organisms, can unveil symbiotic relationships in nature. In this study, soilborne entomopathogenic nematodes associated with symbiotic bacteria (Xenorhabdus stockiae and Photorhabdus ...
Gobinath Chandrakasan, Juan Fernando García-Trejo, Ana Angelica Feregrino-Pérez, Humberto Aguirre-Becerra, Enrique Rico García, María Isabel Nieto-Ramírez   +5 more
doaj   +1 more source

Electrochemical and spectroscopic studies of the complexed species of models of nitrohumic acids derived from phthalic acid

Journal of the Brazilian Chemical Society, 1998
The study of model compounds is necessary in order to obtain information about complex organic substances as in the case of humic substances (HS). These substances are potential organic fertilizers and have other important functions in soils, natural ...
Mercê Ana Lucia Ramalho, Lombardi Simone Cristina, Mangrich Antonio Sálvio, Levy Noel Massinhan, Szpoganicz Bruno   +4 more
doaj  

Molybdenum (VI) binded to humic and nitrohumic acid models in aqueous solutions. Salicylic, 3-nitrosalicylic, 5-nitrosalicylic and 3,5 dinitrosalicylic acids: part 2

Journal of the Brazilian Chemical Society, 2006
In this work electrochemical and Ultraviolet-Visible studies were performed in solutions of salicylic acid models of humic and nitrohumic acids, a laboratory artifact, and molybdenum in order to determine the affinity of these models towards the metal ...
Mercê Ana Lucia R., Lopes Priscilla P., Mangrich Antonio S., Levy Noel M.   +3 more
doaj  

Simultaneous Determination by Selective Esterification of Trimellitic, Phthalic, and Maleic Anhydrides in the Presence of Respective Acids

ACS Omega, 2023
Jacopo Ceccarelli, Stefano Dugheri, Giovanni Cappelli, Niccolò Fanfani, Donato Squillaci, Elisabetta Bucaletti, Nicola Mucci, Giulio Arcangeli   +7 more
doaj   +1 more source

Synthesis of Phthalic Acid Esters from Diisobutylene Monochloride and Phthalic Acid

Journal of The Japan Petroleum Institute, 1974
Furukawa, Yasuhiro, Asano, Koichi, Komatsu, Youji   +2 more
openaire   +2 more sources

Differential Response of Banana Root Exudates and its Components on the Growth and Development of Banana Wilt Pathogen. [PDF]

Microb Ecol
D'Souza R, Pujare K, Balu SK, Kanojiya D, Garg Y, Ghag SB.   +5 more
europepmc   +1 more source

Molecular Insights into the Impact of Anthropogenic Precursors on SOA Formation in Remote Pristine Environments. [PDF]

ACS Omega
Cheramangalath Balan R, Sudharaj A, Hegde P, Kumar D, Babu SS.   +4 more
europepmc   +1 more source