Results 71 to 80 of about 14,524 (254)

A Hyperpolarizable 1H Magnetic Resonance Probe for Signal Detection 15 Minutes after Spin Polarization Storage [PDF]

, 2016
Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are two extremely important techniques with applications ranging from molecular structure determination to human imaging.
Adams, Ardenkjaer-Larsen, Ardenkjaer-Larsen, Asif, Bhattacharya, Bhattacharya, Bowers, Carravetta, Day, Eisenberg, Eshuis, Feiweier, Franzoni, Golman, Heinisch, Hovener, Kurhanewicz, Levitt, Marco-Rius, Mewis, Natterer, Olaru, Roy, Salvi, Stevanato, Tayler, Theis, Theis, Warren, Zeng, Zhang   +30 more
core   +1 more source

Design, Synthesis, and Anticancer Evaluation of Fused 1,2-diazine Derivatives

Proceedings, 2019
Cancer is one of the most serious and merciless health problems of humankind, and the number of new cases is expected to increase in the next decades.
Antoci Vasilichia, Amariucai-Mantu Dorina, Mangalagiu Violeta, Danac Ramona, Mangalagiu I. Ionel   +4 more
doaj   +1 more source

Synthesis of fused tetrazolo[1,5-b]pyridazine-based energetic compounds

Energetic Materials Frontiers, 2020
In this study, the synthesis and properties of 6-nitramino-7-nitro-8-aminotetrazolo[1,5-b]pyridazine (1) and its alkali metal salts (2–6) were presented.
Sitong Chen, Yunhe Jin, Honglei Xia, Kangcai Wang, Yuji Liu, Qinghua Zhang   +5 more
doaj   +1 more source

Bioorthogonal Chemistry in Biomolecule Quantification: A Review of Reactions and Strategies

Chemistry – A European Journal, Volume 32, Issue 1, 2 January 2026.
This review summarizes the application of catalyst‐free bioorthogonal reactions: Staudinger ligation, strain promoted azide alkyne cycloaddition, inverse electron‐demand Diels–Alder, and 2‐cyanobenzothiazole cysteine condensation in the semi‐quantitative and quantitative analysis of biomolecules.
Mingze Yang, Shiqi Wang
wiley   +1 more source

Crystal structure, Hirshfeld surface analysis and corrosion inhibition study of 3,6-bis(pyridin-2-yl)-4-{[(3aS,5S,5aR,8aR,8bS)-2,2,7,7-tetramethyltetrahydro-5H-bis[1,3]dioxolo[4,5-b:4′,5′-d]pyran-5-yl)methoxy]methyl}pyridazine monohydrate

Acta Crystallographica Section E: Crystallographic Communications, 2019
In the title compound, C27H30N4O6·H2O, the two dioxolo rings are in envelope conformations, while the pyran ring is in a twisted-boat conformation. The pyradizine ring is oriented at dihedral angles of 9.23 (6) and 12.98 (9)° with respect to the pyridine
Mouad Filali, Hicham Elmsellem, Tuncer Hökelek, Abdelkrim El-Ghayoury, Oleh Stetsiuk, El Mestafa El Hadrami, Abdessalam Ben-Tama   +6 more
doaj   +1 more source

Highly efficient deep‐blue organic light‐emitting diodes with high color‐purity enabled by triptycene‐enhanced rigid Pt(II) complexes

FlexMat, Volume 2, Issue 4, Page 630-642, December 2025.
Novel enhanced‐rigid tetradentate Pt(II) emitters were developed via the first strategic merging of a pyramidal triptycene unit into the 2,3‐positions of the carbazole moiety. PtJY2‐based bottom‐emitting PhOLED represents one of the best‐balanced performances, including excellent EQEs, low roll‐off, and high color purity, among the reported non ...
Jiaoying Lin, Kewei Xu, Hongjian Zheng, Yuanbin She, Guijie Li   +4 more
wiley   +1 more source

Recent Synthetic Advances in C–H/N–H Functionalization of 1H‐Pyrazoles: Diverse Strategies Across Variously Substituted Scaffolds

The Chemical Record, Volume 25, Issue 12, December 2025.
Systematic overview of pyrazole functionalization reactions from C‐5 to N−H. It covers different strategies, from traditional cross‐coupling of prefunctionalized pyrazoles to more efficient direct functionalizations. This review briefly and systematically overviews C–H and N–H functionalization reactions of pyrazoles, aimed at creating new CC and C ...
Karolina Dzedulionytė Müldür, Asta Žukauskaitė, Algirdas Šačkus, Eglė Arbačiauskienė   +3 more
wiley   +1 more source

Study on the Acid⁃Catalyzed Cyclization Reaction of Allylbenzenes and Tetrazine

Shiyou huagong gaodeng xuexiao xuebao
Indeno[1,2⁃d]pyridazine derivatives have wide applications in pesticides,pharmaceuticals,and other fields due to their excellent biological activities.Therefore,the development of rapid and efficient synthetic methods for these compounds has attracted ...
Wenqing LIU, He WANG, Xin WANG, Lei LI
doaj   +1 more source

Crystal structure, Hirshfeld surface analysis and interaction energy and DFT studies of 4-[(prop-2-en-1-yloxy)methyl]-3,6-bis(pyridin-2-yl)pyridazine

Acta Crystallographica Section E: Crystallographic Communications, 2019
The title compound, C18H16N4O, consists of a 3,6-bis(pyridin-2-yl)pyridazine moiety linked to a 4-[(prop-2-en-1-yloxy)methyl] group. The pyridine-2-yl rings are oriented at a dihedral angle of 17.34 (4)° and are rotated slightly out of the plane of the ...
Mouad Filali, Nada Kheira Sebbar, Tuncer Hökelek, Joel T. Mague, Said Chakroune, Abdessalam Ben-Tama, El Mestafa El Hadrami   +6 more
doaj   +1 more source

Kinetic Re-Evaluation of Fuel Neutralization by AKGA [PDF]

, 2010
Baseline characterization testing previously identified alpha-ketoglutaric acid (AKGA) cis a potential alternative to the current standard hydrazine (HZ) family fuel neutralization techniques in use at Kennedy Space Center (KSC).
Davis, Chuck, Kosiba, Mike, Oropeza Cristina   +2 more
core   +1 more source