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Paweł Kubalczyk et al.
Electrophoresis, 38(13-14), 1800-1805 (2017-04-19)
Fast, simple, and accurate CE method enabling determination of lipoic acid (LA) in human urine has been developed and validated. LA is a disulfide-containing natural compound absorbed from the organism's diet. Due to powerful antioxidant activity, LA has been used...
Tatsuya Higashi et al.
Journal of pharmaceutical and biomedical analysis, 117, 155-162 (2015-09-12)
The analysis of changes in the brain neurosteroid (NS) levels due to various stimuli can contribute to the elucidation of their physiological roles, and the discovery and development of new antipsychotic agents targeting neurosteroidogenesis. We developed methods for the differential...
Grzegorz Boczkaj et al.
Journal of separation science, 40(6), 1301-1309 (2017-01-07)
We present a new procedure for the determination of 32 volatile organonitrogen compounds in samples of industrial effluents with a complex matrix. The procedure, based on dispersive liquid-liquid microextraction followed by gas chromatography with nitrogen-phosphorus and mass spectrometric detection, was...
Hilal E Toraman et al.
Journal of chromatography. A, 1359, 237-246 (2014-07-30)
The detailed compositional characterization of plastic waste pyrolysis oil was performed with comprehensive two-dimensional GC (GC×GC) coupled to four different detectors: a flame ionization detector (FID), a sulfur chemiluminescence detector (SCD), a nitrogen chemiluminescence detector (NCD) and a time of...
Qing-Zhong Zheng et al.
Bioorganic & medicinal chemistry, 18(22), 7836-7841 (2010-10-16)
A series of new 2-chloropyridine derivatives possessing 1,3,4-oxadiazole moiety were synthesized. Antiproliferative assay results indicated that compounds 6o and 6u exhibited the most potent activity against gastric cancer cell SGC-7901, which was more potent than the positive control. Especially, compound...
Trevor J Dines et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 59(13), 3205-3217 (2003-10-30)
The adsorption of 2-chloropyridine on SiO(2), TiO(2), ZrO(2), SiO(2)-Al(2)O(3) and H-mordenite has been studied by IR spectroscopy. The different modes of interaction with oxide surfaces, i.e. hydrogen-bonding and adsorption at Brønsted or Lewis acid sites, was modelled by ab initio...
Michał Gągol et al.
Ultrasonics sonochemistry, 45, 257-266 (2018-05-01)
Cavitation has become on the most often applied methods in a number of industrial technologies. In the case of oxidation of organic pollutants occurring in the aqueous medium, cavitation forms the basis of numerous advanced oxidation processes (AOPs). This paper...
Mattia Moiola et al.
ChemistryOpen, 9(2), 195-199 (2020-02-07)
1,2,4-Oxadiazole[4,5-a]piridinium salts add alcohols and alkoxides to undergo electrocyclic ring opening affording alkoxybutadienyl 1,2,4-oxadiazole derivatives. The pyridinium salts represent a special class of Zincke salts that are prone to rearrange to give alkoxybutadienyl 1,2,4-oxadiazoles when treated with suitable nucleophiles or...
Xin-Hua Liu et al.
Bioorganic & medicinal chemistry letters, 20(14), 4163-4167 (2010-06-12)
A series of novel 2-chloro-pyridine derivatives containing flavone, chrome or dihydropyrazole moieties as potential telomerase inhibitors were synthesized. The bioassay tests showed that compounds 6e and 6f exhibited some effect against gastric cancer cell SGC-7901 with IC(50) values of 22.28+/-6.26...
Dimitris Vlastos et al.
Journal of hazardous materials, 177(1-3), 892-898 (2010-01-20)
2-Chloropyridine (2-CPY) has been identified as a trace organic chemical in process streams, wastewater and even drinking water. Furthermore, it appears to be formed as a secondary pollutant during the decomposition of specific insecticides. As reported in our previous work...
Kazuko Inoue et al.
Drug metabolism and disposition: the biological fate of chemicals, 37(9), 1797-1800 (2009-06-23)
We investigated the substitution reaction of a series of 2-chloropyridine derivatives catalyzed by rat liver microsomal glutathione S-transferase 1. Various 2-chloropyridine derivatives were metabolized to the corresponding substituted glutathione conjugates via displacement of chlorine atom with glutathione. The reaction was...
Margaret L Eng et al.
The Science of the total environment, 760, 143409-143409 (2020-11-22)
Neonicotinoids are the most widely used insecticides globally, but their rapid metabolism in vertebrates makes diagnosing wildlife exposure challenging. More detailed information on the pattern of imidacloprid metabolites over time could be used to better approximate the timing and level...
Terence G Hamill et al.
Synapse (New York, N.Y.), 65(4), 261-270 (2010-08-06)
Two positron emission tomography radiotracers for the glycine transporter 1 (GlyT1) are reported here. Each radiotracer is a propylsulfonamide-containing benzamide and was labeled with either carbon-11 or fluorine-18. [¹¹C]CMPyPB was synthesized by the alkylation of a 3-hydroxypyridine precursor using [¹¹C]MeI...
David R Stapleton et al.
Journal of hazardous materials, 146(3), 640-645 (2007-06-05)
The degradation of 2-chloropyridine (2-CPY) and its degradation primary product 2-hydroxypyridine (2-HPY) was studied by means of ultraviolet (UV) irradiation at 254nm. Photolytic and photocatalytic experiments were conducted on 2-CPY and 2-HPY aqueous solutions in a batch reactor with internal...
Jonita Stankevičiūtė et al.
Scientific reports, 6, 39129-39129 (2016-12-17)
Pyridinols and pyridinamines are important intermediates with many applications in chemical industry. The pyridine derivatives are in great demand as synthons for pharmaceutical products. Moreover, pyridines are used either as biologically active substances or as building blocks for polymers with...
Charalambos Skoutelis et al.
Journal of hazardous materials, 321, 753-763 (2016-10-12)
2-Chloropyridine, an important precursor of the chemical industry is also a persistent water pollutant. The genotoxicity of photolytically treated 2-chloropyridine aqueous solution to human lymphocytes initially increases and fluctuates during treatment finally reaching the control values after prolonged treatment. Intermediate...
Contribution of N-oxidation and .OH radicals to mutagenesis of 2-chloropyridine in Salmonella typhimurium.
B Chłopkiewicz et al.
Acta biochimica Polonica, 40(1), 57-59 (1993-01-01)
Nagat Ghareb et al.
Bioorganic chemistry, 71, 110-119 (2017-02-07)
The synthesis, pharmacological evaluation and molecular modelling study of novel naphthalen-2-yl acetate and 1,6-dithia-4,9-diazaspiro [4.4]nonane-3,8-dione derivatives as potential anticonvulsant agents are described. The newly synthesized compounds were characterized by both analytical and spectral data. Alkylation of 1H-imidazole or substituted piperazine...
David R Stapleton et al.
Water research, 43(16), 3964-3973 (2009-07-14)
The photolytic destruction and mineralisation of 2-halogenated pyridines (2-HalPYs) was studied in a range of conditions by means of ultraviolet irradiation at 254 nm. In all cases pseudo-first order kinetics satisfactorily describe the degradation process. Key decomposition products were identified...
Andreas Reichelt et al.
Organic letters, 12(4), 792-795 (2010-01-27)
An efficient and convenient method for the synthesis of [1,2,4]triazolo[4,3-a]pyridines was exemplified by the synthesis of 20 analogues bearing a variety of substituents at the 3-position. The methodology involves a palladium-catalyzed addition of hydrazides to 2-chloropyridine, which occurs chemoselectively at...
Anita Toulmin et al.
Journal of medicinal chemistry, 51(13), 3720-3730 (2008-06-19)
Partition coefficients were measured for 47 compounds in the hexadecane/water ( P hxd) and 1-octanol/water ( P oct) systems. Some types of hydrogen bond acceptor presented by these compounds to the partitioning systems are not well represented in the literature...
Fereshteh Mehri et al.
Iranian journal of pharmaceutical research : IJPR, 19(4), 143-150 (2021-04-13)
A sensitive method using ion-pair extraction was developed by liquid chromatography tandem mass spectrometry (LC-MS/MS) for measurement of 4-methylimidazole (4-MI) in NMRI mice plasma and cerebrospinal fluid (CSF). Detection was done by electrospray positive ionization mass spectrometry in the multiple-reaction...