نتایج جستجو برای: guanidine

تعداد نتایج: 3719  

Journal: :Proceedings of the National Academy of Sciences 1935

Journal: :Analytical biochemistry 2008
Ling-Wen Ding Qiao-Yang Sun Zhao-Yu Wang Yong-Bin Sun Zeng-Fu Xu

The most commonly used protocol of the RNA isolation, the guanidine thiocyanate method, was unsuitable for recalcitrant plant tissues containing a large amount of storage proteins and secondary metabolites. We demonstrated that RNA could bind to the silica particles, which have been used successfully in DNA isolation from various sources, under a high concentration of NaCl in the presence of et...

Journal: :Acta Crystallographica Section E Structure Reports Online 2011

Journal: :The Nonproliferation Review 2021

Novichoks, also known as A-series agents, are nerve agents developed in the Soviet Union during Cold War. Once obscure chemicals, they garnered a great deal of attention after their employment attempted assassinations Sergei and Yulia Skripal 2018 Alexei Navalny 2020. Novichok were not originally featured schedules Chemical Weapons Convention (CWC), which intended to support treaty’s verificati...

2014
Tanja Grkovic Johanna S. Blees Magdalena M. Bayer Nancy H. Colburn Cheryl L. Thomas Curtis J. Henrich Megan L. Peach James B. McMahon Tobias Schmid Kirk R. Gustafson

A cell-based high-throughput screen that assessed the cellular stability of a tumor suppressor protein PDCD4 (Programmed cell death 4) was used to identify a new guanidine-containing marine alkaloid mirabilin K (3), as well as the known compounds mirabilin G (1) and netamine M (2). The structures of these tricyclic guanidine alkaloids were established from extensive spectroscopic analyses. Comp...

2013
Ioannis Tiritiris Willi Kantlehner

In the title compound, C35H32N4, the C-N bond lengths in the guanidine part are 1.286 (3), 1.387 (2) and 1.414 (2) Å, indicating double- and single-bond character. The N-C-N angles are 114.48 (17), 118.78 (17) and 126.72 (17)°, showing a deviation of the CN3 plane from an ideal trigonal-planar geometry. The carbazole ring system is almost planar (r.m.s. deviation = 0.002 Å). In the crystal, mol...

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