Výsledky vyhledávání - "Nitrogen rule"

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Insight into chemical basis of traditional Chinese medicine based on the state-of-the-art techniques of liquid chromatography-mass spectrometry

Autor: Changliang Yao, De-An Guo, Yang Yu

Publikováno v: Acta Pharmaceutica Sinica. B
Acta Pharmaceutica Sinica B, Vol 11, Iss 6, Pp 1469-1492 (2021)

Traditional Chinese medicine (TCM) has been an indispensable source of drugs for curing various human diseases. However, the inherent chemical diversity and complexity of TCM restricted the safety and efficacy of its usage. Over the past few decades,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e17b04c502a8079fb64055ca20456b6
https://pubmed.ncbi.nlm.nih.gov/34221863

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Integrated strategy for identifying minor components in complex samples combining mass defect, diagnostic ions and neutral loss information based on ultra-performance liquid chromatography-high resolution mass spectrometry platform: Folium Artemisiae Argyi as a case study

Autor: Meilin Xu, Dabing Ren, Lunzhao Yi, Chong Yang, Lu Ran

Publikováno v: Journal of Chromatography A. 1550:35-44

Ultra-performance liquid chromatography coupled to high-resolution mass spectrometry (UPLC-HRMS) has been used as a powerful tool to profile chemicals in traditional Chinese medicines. However, identification of potentially bioactive compounds is sti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c045290a18f96b9d3acc7c0167618f6
https://doi.org/10.1016/j.chroma.2018.03.044

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Effects of NO x on the molecular composition of secondary organic aerosol formed by the ozonolysis and photooxidation of α-pinene

Autor: Ho-Jin Lim, Jun-Hyun Park, Sun Jong Baek, Zaeem Bin Babar, Hyun Sik Kim

Publikováno v: Atmospheric Environment. 166:263-275

The molecular composition of secondary organic aerosol (SOA), obtained from the ozonolysis and photooxidation of α-pinene, was investigated using ultrahigh-resolution Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS) in negativ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6dccfbd5aa8d8b76d124707a0f6443e3
https://doi.org/10.1016/j.atmosenv.2017.07.022

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Difference in Number of Electrons in Inner Shells of Charged or Uncharged Elements in Organic and Inorganic Chemistry: Compatibility with the Even-Odd Rule

Autor: Geoffroy Auvert

Publikováno v: Open Journal of Physical Chemistry. :72-88

The recently introduced even-odd rule has been shown to successfully represent chemical structures of ions and molecules. While comparing available drawings in the scientific literature with the list of compounds predicted by the even-odd rule, it be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::613ae01d3a51b17feedfaf4fb7bded8a
https://doi.org/10.4236/ojpc.2017.72006

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Synthesis and mass spectrometry of some arylidene-hydrazinyl-thiazolines and their 2-arylidene-N-(3-chlorophenyl)hydrazinecarbothioamide precursors

Autor: El Sayed Ramadan

Publikováno v: SN Applied Sciences. 1

N-(3-Chlorophenyl)hydrazinecarbothioamide (2) was prepared by reacting 1-chloro-3-isothiocyanatobenzene (1) with hydrazine hydrate in 2-propanol, whose 1H-NMR spectrum showed its existence in a Zwitter ionic betain form. A number of 2-arylidene-N-(3-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02ede91e63ddec93a90507940db7d649
https://doi.org/10.1007/s42452-019-0480-x

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Layer-by-layer functionalized porous Zinc sulfide nanospheres-based solid-phase extraction combined with liquid chromatography time-of-flight/mass and gas chromatography-mass spectrometry for the specific enrichment and identification of alkaloids from Crinum asiaticum var. sinicum

Autor: Rui Xiang Yang, An Kang, Chenxiao Shan, Wei Li, Yue Hu, Zhao Yi Miao, Hong Mei Wen, Dong Zhu, Sheng Yu, Jun Chen

Publikováno v: Analytica Chimica Acta. 932:60-68

The current widely utilized polymer or C8, C18 end-capped material-based sorbents for solid-phase extraction could not capture alkaloids well only based on "like dissolves like" principle. In this paper, a layer-by-layer functionalized porous Zinc su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a8387740400fd8ecf0f3f71d7c1e590
https://doi.org/10.1016/j.aca.2016.05.028

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Theoretical characterization of sulfur and nitrogen dual-doped graphene

Autor: C. Pereyra Huelmo, Federico Iribarne, Pablo A. Denis

Publikováno v: Computational and Theoretical Chemistry. 1049:13-19

We have employed density functional theory to unravel the structural and electronic properties of sulfur and nitrogen dual-doped graphene. In the preferred configuration, the sulfur and nitrogen atoms replace the carbon atoms of a CC bond, but they a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::402bb9def76709702f3fb98de4a2901b
https://doi.org/10.1016/j.comptc.2014.08.023

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Akademický článek

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Akademický článek

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