Results 11 to 20 of about 13,090 (233)

Dimethyl and diethyl esters of 5,6-bis(pyridin-2-yl)pyrazine-2,3-dicarboxylic acid: a comparison

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2016
In dimethyl 5,6-bis(pyridin-2-yl)pyrazine-2,3-dicarboxylate, C18H14N4O4, (I), and diethyl 5,6-bis(pyridin-2-yl)pyrazine-2,3-dicarboxylate, C20H18N4O4, (II), the dimethyl and diethyl esters of 5,6-bis(pyridin-2-yl)pyrazine-2,3-dicarboxylic acid, the ...
Montserrat Alfonso, Helen Stoeckli-Evans
doaj   +1 more source

(μ-2,2′,2′′,2′′′-{[Pyrazine-2,3,5,6-tetrayltetrakis(methylene)]tetrakis(sulfanediyl)}tetraacetato)bis[aquanickel(II)] heptahydrate

open access: yesIUCrData, 2021
Reaction of the ligand 2,2′,2′′,2′′′-{[pyrazine-2,3,5,6-tetrayltetrakis(methylene)]tetrakis(sulfanediyl)}tetraacetic acid (H4L1), with NiCl2 leads to the formation of a binuclear complex, (μ-2,2′,2′′,2′′′-{[pyrazine-2,3,5,6-tetrayltetrakis(methylene ...
Jessica Pacifico, Helen Stoeckli-Evans
doaj   +1 more source

Nifedipine–pyrazine (2/1)

open access: yesActa Crystallographica Section E, 2010
In the title compound, 2C17H18N2O6·C4H4N2 [systematic name: 3,5-dimethyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate–pyrazine (2/1)], the complete pyrazine molecule is generated by crystallographic inversion ...
Nate Schultheiss   +2 more
doaj   +1 more source

Processing of Flavor-Enhanced Oils: Optimization and Validation of Multiple Headspace Solid-Phase Microextraction-Arrow to Quantify Pyrazines in the Oils

open access: yesLife, 2021
An efficient and effective multiple headspace-solid phase microextraction-arrow-gas chromatography-mass spectrometry (MHS-SPME-arrow-GCMS) analytical protocol is established and used to quantify the flavor compounds in oils.
Ziyan Xu   +5 more
doaj   +1 more source

Pyrazine analogues are active components of wolf urine that induce avoidance and fear-related behaviors in deer

open access: yesFrontiers in Behavioral Neuroscience, 2014
Our previous studies indicated that a cocktail of pyrazine analogues, identified in wolf urine, induced avoidance and fear behaviors in mice. The effects of the pyrazine cocktail on Hokkaido deer (Cervus nippon yesoensis) were investigated in field ...
Kazumi eOsada   +2 more
doaj   +1 more source

Research Progress of the Detection, Source, Aroma and Functional Activity of Pyrazine Compounds in High Temperature Daqu Baijiu

open access: yesShipin gongye ke-ji, 2023
Microcompounds, the key factors for the difference of flavor and quality in Baijiu, are one of the hot topics in the research field of Baijiu. Pyrazine compounds are a kind of microcompounds which contribute to the formation of the flavor in Baijiu, and ...
Yanmei ZHU   +3 more
doaj   +1 more source

Poly[[μ4-3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6′,7′-e]pyrazine]di-μ-iodido-dicopper(I)]: a two-dimensional copper(I) coordination polymer

open access: yesIUCrData, 2020
The reaction of ligand 3,4,8,10,11,13-hexahydro-1H,6H-bis([1,4]dithiocino)[6,7-b:6′,7′-e]pyrazine (L) with CuI led to the formation of a two-dimensional coordination polymer, incorporating a [Cu2I2] motif.
Tokouré Assoumatine   +1 more
doaj   +1 more source

Aquadioxidobis(pentane-2,4-dionato)uranium(VI) pyrazine solvate

open access: yesActa Crystallographica Section E, 2008
The asymmetric unit of the title compound, [U(C5H7O2)2O2(H2O)]·C4H4N2, contains one [UO2(acac)2(H2O)] (where acac is acetylacetonate) and two half-molecules of pyrazine.
Takafumi Kitazawa, Takeshi Kawasaki
doaj   +1 more source

Bifunctional Pd sites on Pd4/Co3O4 nanowires for high selectivity of pyrazine electrocatalytic hydrogenation with water as the hydrogen source [PDF]

open access: yesRSC Applied Interfaces
Liquid organic hydrogen carriers (LOHCs) are considered highly promising materials for hydrogen storage. However, hydrogenation and dehydrogenation of LOHCs often require harsh reaction conditions.
Fangcheng Qiu   +7 more
doaj   +1 more source

Pyrazine Carboxylic Acid Derivatives of Dichlorobis(Cyclopentadienyl)titanium(IV)

open access: yesOrbital: The Electronic Journal of Chemistry, 2012
Reactions of dichlorobis(cyclopentadienyl)titanium(IV) with pyrazine carboxylic acids viz. 2-pyrazine carboxylic acid (2-PzCH), 5-methyl-2-pyrazine carboxylic acid (MPzCH) and 2,3-pyrazine dicarboxylic acid (2,3-PzDCH2) were carried out in different ...
Satish Chandra Dixit, Rohit Kumar Singh
doaj   +1 more source

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