Results 31 to 40 of about 6,869 (206)

Nifedipine–pyrazine (2/1) [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
In the title compound, 2C(17)H(18)N(2)O(6)·C(4)H(4)N(2) [systematic name: 3,5-dimethyl 2,6-dimethyl-4-(2-nitro-phen-yl)-1,4-di-hydro-pyridine-3,5-dicarboxyl-ate-pyrazine (2/1)], the complete pyrazine molecule is generated by crystallographic inversion symmetry. The center of the pyrazine ring lies on an inversion center.
Schultheiss, Nate, Roe, Melanie, Smit, Jared P.   +2 more
openaire   +2 more sources

2-(2-Methoxyphenoxy)pyrazine [PDF]

Acta Crystallographica Section E Structure Reports Online, 2011
A significant twist is observed in the title molecule, C(11)H(10)N(2)O(2), as seen in the dihedral angle between the pyrazine and benzene rings of 72.79 (8)°. The meth-oxy group is almost coplanar with the benzene ring to which it is attached [C-O-C-C torsion angle = 175.83 (15)°].
Shah Bakhtiar Nasir, Z.A. Fairuz, Zanariah Abdullah, Seik Weng Ng, Edward R. T. Tiekink   +4 more
openaire   +2 more sources

Reduction of Saltiness and Acrylamide Levels in Palm Sugar-Like Flavouring through Buffer Modification and the Addition of Calcium Chloride

Molecules, 2013
Palm sugar-like flavouring (PSLF) is a type of flavour product that is formed by heating amino acids and sugar under specific heating conditions. Unfortunately, PSLF has a salty taste and contains high amounts of acrylamide.
Wan Aida Wan Mustapha, Chun Wai Ho, Faridah Abas, Chin Ping Tan, Phui Yee Tan   +4 more
doaj   +1 more source

2-(4-Methoxyphenoxy)pyrazine [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
In the title compound, C(11)H(10)N(2)O(2), the aromatic rings are almost orthogonal to each other [dihedral angle = 86.97 (8)°], with the benzene ring orientated to face one of the pyrazine N atoms. In the crystal, centrosymmetrically related pairs are connected via pairs of C—H⋯π inter­actions and the dimeric units thus formed pack into undulating ...
Shah Bakhtiar Nasir, Zanariah Abdullah, Azizah Mainal, Zainal A. Fairuz, Seik Weng Ng, Edward R. T. Tiekink   +5 more
openaire   +2 more sources

Progress on the Synthesis Pathways and Pharmacological Effects of Naturally Occurring Pyrazines

Molecules
As one of the most essential types of heterocyclic compounds, pyrazines have a characteristic smell and taste and have a wide range of commercial applications, especially in the food industry.
Xun Liu, Wenli Quan
doaj   +1 more source

Biobased pyrazines

, 2022
Curiosity and sustainable development go hand in hand to help with the major problems of our time. This thesis shows how curiosity driven research can result in new insights. The thesis describes the development new building blocks from biomass, which have never been used in materials before, and their subsequent use in plastics.
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The Chemistry behind Chocolate Production

Molecules, 2019
Chocolate production is a complex process during which numerous chemical reactions occur. The most important processes, involving most of the reactions important for development of the proper chocolate flavor, are fermentation, drying and roasting of ...
Veronika Barišić, Mirela Kopjar, Antun Jozinović, Ivana Flanjak, Đurđica Ačkar, Borislav Miličević, Drago Šubarić, Stela Jokić, Jurislav Babić   +8 more
doaj   +1 more source

1-[2-(Pyrazin-2-ylsulfanyl)ethyl]pyrazine-2(1H)-thione [PDF]

Acta Crystallographica Section E Structure Reports Online, 2011
The title multifunctional twisted organic ligand, C(10)H(10)N(4)S(2), contains a short C=S bond [1.671 (2) Å]. The dihedral angle between the two pyrazine rings is 39.83 (6)°. In the crystal, inter-molecular C-H⋯N and C-H⋯S hydrogen bonds result in the formation of a supra-molecular network.
Xi-Zai Zhao, Jing-Jing Jia, Miao Ou-Yang, Fu-Ping Huang, Yi-Min Jiang   +4 more
openaire   +3 more sources

GC-Olfactometric Analysis as a Tool for Comprehensive Characterization of Aromatic Profiles in Cocoa-Based Beverages with a Natural Chocolate Substitute

Fermentation
Cocoa is the third most important global agricultural export commodity. However, because it is a crop sensitive to climatic change, there has been an active search for cocoa substitutes worldwide.
Fernanda Papa Spada, Severino Matias de Alencar, Stanislau Bogusz Junior, Eduardo Purgatto   +3 more
doaj   +1 more source

Biological Activity of Volatiles from Marine and Terrestrial Bacteria

Marine Drugs, 2010
The antiproliferative activity of 52 volatile compounds released from bacteria was investigated in agar diffusion assays against medically important microorganisms and mouse fibroblasts.
Irene Wagner-Dobler, Randi Diestel, Florenz Sasse, Jeroen S. Dickschat, Brigitte Kunze, Stefan Schulz   +5 more
doaj   +1 more source