Results 211 to 220 of about 5,057,148 (287)

The Fenton Reaction in Water Assisted by Picolinic Acid: Accelerated Iron Cycling and Co-generation of a Selective Fe-Based Oxidant.

Environmental Science and Technology, 2021
The Fenton reaction is limited by a narrow acidic pH range, the slow reduction of Fe(III), and susceptibility of the nonselective hydroxyl radical (HO•) to scavenging by water constituents.
Zhichao Yang, C. Shan, B. Pan, J. Pignatello   +3 more
semanticscholar   +1 more source

Double Trigonal Pyramidal {SeO3} Groups Bridged 2-Picolinic Acid Modified Cerium-Inlaid Polyoxometalate Including Mixed Selenotungstate Subunits for Electrochemically Sensing Ochratoxin A.

Inorganic Chemistry, 2022
An organic-inorganic hybrid trigonal pyramidal {SeO3} group, bridged cerium-inlaid polyoxometalate (POM) Na16[Se2Ce4(H2O)8W4(HPIC)4O10][B-β-SeW8O30]2[Se2W12O46]2·60H2O (1) (HPIC = 2-picolinic acid), containing two disparate selenotungstate (ST) building ...
Lulu Liu, Jun Jiang, Li-Ting Cui, Junwei Zhao, Xinhua Cao, Lijuan Chen   +5 more
semanticscholar   +1 more source

2-Picolinic acid as a naturally occurring hydrogen bond donor for the preparation of cyclic carbonates from terminal/internal epoxides and CO2

Green Chemistry, 2022
Naturally sourced 2-picolinic acid was discovered as an off-the-shelf, non-toxic, and inexpensive HBD catalyst for the cycloaddition of CO2 to both internal and terminal epoxides to prepare cyclic carbonates at low catalyst loadings.
A. Rostami, Amirhossein Ebrahimi, Mohammed Al-Jassasi, Saber Mirzaei, A. Al‐Harrasi   +4 more
semanticscholar   +1 more source

Synthesis and Evaluation of Novel 111In-Labeled Picolinic Acid-Based Radioligands Containing an Albumin Binder for Development of a Radiotheranostic Platform.

Molecular Pharmaceutics, 2022
Picolinic acid-based metallic chelators, e.g., neunpa and octapa, have attracted much attention as promising scaffolds for radiotheranostic agents, particularly those containing larger α-emitting radiometals.
Shimpei Iikuni, Yuta Tarumizu, Shohei Tsuchihashi, Takaki Ohara, Hiroyuki Watanabe, M. Ono   +5 more
semanticscholar   +1 more source

Shared Hydrogen Atom Location and Chemical Composition in Picolinic Acid and Pyridoxal Hydrochloride Derivatives Determined by X-ray Crystallography.

Journal of Organic Chemistry, 2022
Three new single-crystal structures were isolated for picolinic acid (2), the trifluoroacetate salt of picolinic acid (1), and pyridoxal hydrochloride (3).
Ayelén F. Crespi, D. Vega, V. M. Sánchez, E. Rodriguez-castellon, J. Lázaro-Martínez   +4 more
semanticscholar   +1 more source

Investigation of Picolinic Acid Extraction by Trioctylamine

International Journal of Chemical Reactor Engineering, 2011
Picolinic acid is a pyridine compound with a carboxyl side chain at the 2-position. It is an isomer of nicotinic acid, which has the carboxyl side chain at the 3-position. Picolinic acid acts as a chelating agent of elements such as chromium, zinc, manganese, copper, iron, and molybdenum in the human body.
Tuyun, Amac Fatih, Uslu, Hasan
openaire   +3 more sources

THE CRYSTAL STRUCTURE OF PICOLINIC ACID

Chemistry Letters, 1973
Abstract The crystal structure of picolinic acid was determined by a three-dimensional X-ray analysis. The molecules are linked by two symmetric double minimum hydrogen bonds with a small potential barrier, N–H–N and O–H–O,and form a zig-zag chain.
ShimadaAkira, TakusagawaFusao
openaire   +2 more sources

Influence of picolinic acid on seizure susceptibility in mice

Pharmacological Reports, 2017
The mechanism of drug resistance in epilepsy remains unknown. Picolinic acid (PIC) is an endogenous metabolite of the kynurenine pathway and a chelating agent added to dietary supplements. Both inhibitory and excitatory properties of PIC were reported.
Anna Cioczek-Czuczwar, Jolanta Parada-Turska, Piotr Czuczwar, Waldemar A. Turski   +3 more
openaire   +3 more sources

Picolinic acid hydroxylase of Arthrobacter picolinophilus

Canadian Journal of Microbiology, 1974
Picolinic acid is oxidized by cells and extracts of Arthrobacter picolinophilus to 6-hydroxypicolinic acid. The enzyme involved is a particulate hydroxylase which appears to incorporate the hydroxyl group of water into the substrate. The enzyme was purified about 60-fold.
R. L. Tate, J. C. Ensign
openaire   +3 more sources

Immunobiology of Picolinic Acid

1996
Exposure of various cell types to IFN results in increased enzymatic activities leading to the breakdown of tryptophan and evidence exists to suggest that the catabolism of tryptophan may be connected to the biological effects of interferon (Carlin et al., 1989.
G. Melillo, Maria Carla Bosco, T Musso, Luigi Varesio   +3 more
openaire   +3 more sources