نتایج جستجو برای: 3h
تعداد نتایج: 19561 فیلتر نتایج به سال:
a new mixed halo chromate nanoparticle compound was synthesised and characterized. triphenylphosphonium trifluoroiodochromate (iii)[p(c6h5)3h]+[crf3i]- nanoparticle was synthesized by using triphenylphosphonium iodide reaction with crf3, in the presence of 3-mercaptopropionic acid. this method is a simple and direct method. the product was characterized by spectroscopic and analytical metho...
Background: Neurotransmitter release is an essential link in cell communication of the nervous system. Many investigations have focused on gamma amino butyric acid (GABA)-ergic neurotransmission, because it has been implicated in the pathophysiology of several central nervous system disorders. To bypass complications related to homo- and heterosynaptic modulation and to avoid indirect interpret...
Hexahydro-3-alkyl-3H-oxazolo[3,4-a]pyridines 4–15 for the quantitative analysis of various aldehydes were obtained in good yield via condensation reaction 2-hydroxymethylpiperidine (2-HMP) with under mild conditions. When acrolein was used, bicyclic 17 obtained. This novel compound has suitable physical characteristics an analytical standard. The hexahydro-3-vinyl-3H-oxazolo[3,4-a]pyridine 16 c...
The study investigated the corrosion-inhibitory properties of three synthetic triazole Mannich bases on C1018 carbon steel using various electrochemical techniques. inhibitors, namely 4-amino-2-[(4-methylpiperazin-1-yl)methyl]-5-(pyridin-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (4MPT), 4-amino-2-[(piperidin-1-yl)methyl]-5-(pyridin-4-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (PPT) and 4-ami...
In this study, series of ring-substituted 2-styrylquinazolin-4(3H)-one and 4-chloro-2-styrylquinazoline derivatives were prepared. The syntheses of the discussed compounds are presented. The compounds were analyzed by RP-HPLC to determine lipophilicity. They were tested for their inhibitory activity on photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts. Prima...
vilsmeier-haack reaction of 2,3,3-trimethyl-3h-benzo[g]indole, then aqueous basic work-up, leads to benzo[g]indol-2-ylidene- malondialdehydes. these react with various arylhydrazines and quinolin-2-ylhydrazine to form 3,3-dimethyl-2-(1-aryl-1h-pyrazol-4-yl)- 3h-benzo[g]indoles in good yields.
The isolation of steroid compounds from Adam Hawa leaves has been carried out through maceration, partition, separation, and purification. relatively pure BF2 isolate was 7 mg amorphous with a melting point 158-1700C. Results 1H-NMR spectrum analysis CDCl3 solvent, 500 MHz δH: 7,53 (d, J= 5,4 Hz, = C-H ); 7,72 5,7 C-H); 5,35 (1H, d, J=5,15 =C-H); 3,51 m, Ar-CH), 0,93 6,2 3H), 0,86 (3H, s), 0,84...
Abstract Listeria monocytogenes (LM) is a pathogenic bacterium which can release 3-hydroxy-2-butanone (3H-2B) as biological indicator. We report high-performance 3H-2B gas sensing strategy for the selective detection of LM. This realized by n-CdO/n-SnO 2 hetero-nanofibers with controllable compositions, synthesized via facile one-step electrospinning method. The tailored morphologies and micros...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید