Results 241 to 250 of about 5,057,148 (287)

Picolinic acid as a matrix for laser mass spectrometry of nucleic acids and proteins

Rapid Communications in Mass Spectrometry, 1994
AbstractWe found that picolinic acid is a very good matrix for matrix‐assisted laser desorption/ionization (MALDI) time‐of‐flight mass spectrometry of oligonucleotides, proteins and tRNA. Among the oligonucleotides, picolinic acid was shown to be effective for homo‐oligonucleotides, d(G)40 and d(C)60, and for mixed‐base oligonucleotides up to 190 bases.
L. Y. Chág, C. H. Chen, Kai Tang, K. B. Jacobson, N. I. Taranenko, Steve L. Allman   +5 more
openaire   +3 more sources

Metal-Free Decarboxylative Alkoxylation of 2-Picolinic Acid and Its Derivatives with Cyclic Ethers: One Step Construction of C-O and C-Cl Bonds.

Organic Letters, 2018
A new strategy for the metal-free decarboxylative alkoxylation of 2-picolinic acid and its derivatives is described. The three-component reaction of 2-picolinic acid or its derivatives, cyclic ethers, and tBuOCl proceeded smoothly in the presence of a ...
Xiaoqiang Yu, M. He, Jianglin Wu, Chuancheng Zhou, Xiujuan Feng, Yoshinori Yamamoto, M. Bao   +6 more
semanticscholar   +1 more source

Exploring the in vitro anticancer activities of Re(I) picolinic acid and its fluorinated complex derivatives on lung cancer cells: a structural study

JBIC Journal of Biological Inorganic Chemistry, 2022
Mabu L. Matlou, F. Malan, S. Nkadimeng, L. Mcgaw, V. J. Tembu, A. Manicum   +5 more
semanticscholar   +1 more source

Macrophage Activating Properties of The Tryptophan Catabolite Picolinic Acid

2003
Recent studies have suggested a role for aminoacid catabolites as important regulators of macrophage (Mphi) activities. We reported previously that picolinic acid (PA), a tryptophan catabolite produced under inflammatory conditions and a costimulus with IFNgamma of Mphi effector functions, is a selective inducer of the Mphi inflammatory protein-1alpha (
Annamaria Rapisarda, Stefano Massazza, Gioia Reffo, Sandra Pastorino, Luigi Varesio, Maria Carla Bosco   +5 more
openaire   +2 more sources

Influence of Dietary Picolinic Acid on Mineral Metabolism in the Rat

Annals of Nutrition and Metabolism, 1988
Male rats were fed isonitrogenous, isocaloric diets containing different amounts of dietary zinc and picolinic acid (PA) (25, 60, 120 ppm Zn, 0, 20, 40, 60 mmol PA/kg diet) and balance collections of urine and faeces made over a 4-day period. Rats fed 25 ppm Zn were in negative Zn and Cu balance during the experiment.
openaire   +3 more sources

Equilibrium molecular structure and intramolecular interactions of picolinic acid hydrazide

Chemical Physics Letters, 2022
I. N. Kolesnikova, N. A. Chegodaev, Pavel Yu. Sharanov, I. F. Shishkov   +3 more
semanticscholar   +1 more source

Thermal study and characterization of new cocrystals of ciprofloxacin with picolinic acid

Journal of Thermal Analysis and Calorimetry, 2021
Carolina Torquetti, P. O. Ferreira, Amanda Cosmo de Almeida, R. P. Fernandes, F. Caires   +4 more
semanticscholar   +1 more source

Zinc Absorption in Cattle with a Dietary Picolinic Acid Supplement

The Journal of Nutrition, 1981
The effect of picolinic acid and hydroxyquinolines in intestinal zinc absorption of cattle was studied. In contrast to reports of the absorption in rat and in man, picolinic acid did not enhance zinc absorption in cattle. In two calves suffering from Adema disease, the bovine parallel to Acrodermatitis enteropathica, hydroxyquinoline supplementation ...
openaire   +3 more sources

The Preparation of Isonicotinic and Picolinic Acids

Journal of the American Chemical Society, 1952
Roland S. Yunghans, D. J. Cook
openaire   +2 more sources

Picolinic acid-mediated Mn(II) activated periodate for ultrafast and selective degradation of emerging contaminants: Key role of high-valent Mn-oxo species.

Water Research
Wenxin Shi, Chi Zhang, He Zhao, Bing Zhang, Heli Tang, Yanan Liu, Bing Zhang   +6 more
semanticscholar   +1 more source