Tag: M.W:100-200

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Journal of Molecular Structure called Synthesis, molecular modeling, and docking studies of a new pyridazinone-acid hydrazone ligand, and its nano metal complexes. Spectroscopy, thermal analysis, electrical properties, DNA cleavage, antitumor, and antimicrobial activities, Author is Abdelrahman, Maha S. A.; Omar, Fouz M.; Saleh, Akila A.; El-ghamry, Mosad A., which mentions a compound: 66-71-7, SMILESS is C1=CC3=C(C2=NC=CC=C12)N=CC=C3, Molecular C12H8N2, Related Products of 66-71-7.

New nano Co(II), Ni(II), Cu(II), Zn(II), Fe(III) complexes, and oxovanadium(IV), dioxouranium(VI) complexes of pyridazinone-acid hydrazone ligand, DCNHP (H2L), in addition of new mixed-ligand complexes using 8-HQ/or 1,10-phen as an auxiliary ligand (L’), were synthesized and characterized by different techniques. The ligand, H2L, acted as tridentate towards the metal ions in a mono-, and bis- deprotonated form. The complexes exhibited a variety of geometrical structures including octahedral, square pyramidal, and tetrahedral configurations. The results of TGA confirmed the thermal stability of the metal complexes. The X-ray diffractograms and TEM images confirmed that the particles of the studied compounds were situated in nano-range with spherical and stick-shaped. Mol. modeling studies indicated that the theor. data agree well with the exptl. results. The antimicrobial activity study showed enhancement in activity of the free ligand upon complexation. The results of antitumor screening indicated that all examined compounds displayed inhibition of Hepatocellular carcinoma cell line (HepG-2) viability. The ligand, H2L, and its nano Cu(II) complex 7 displayed strong antitumor activity with IC50 = 3.80 and 3.81μg/mL, resp. The DNA cleavage study revealed that no ability for the screened compounds to cleavage DNA, and they may be able to induce cellular death in cancer cells through the apoptosis pathway. The docking results suggesting strong interactions of both the ligand, H2L, and its Cu(II) complex 7 with the VEGFR-2 enzyme, these interactions are very similar to that of the known hepatocellular carcinoma (HCC) inhibitor, sorafenib (Nexavar) with the target enzyme, and indicating the effective inhibition of the studied compounds towards hepatocellular carcinoma. Moreover, the elec. conductivity study in solid-state revealed that the nano Cu(II) complex 7 displayed higher σac values than that for the free ligand, H2L, and the studied compounds act as semiconductors.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Science of the Total Environment called Efficient degradation of aqueous organic contaminants in manganese(II)/peroxymonosulfate system assisted by pyridine organic ligands, Author is Hu, Youyou; Sun, Siyu; Xu, Mengshan; Guo, Jialin; Li, Zhengkui, which mentions a compound: 66-71-7, SMILESS is C1=CC3=C(C2=NC=CC=C12)N=CC=C3, Molecular C12H8N2, Quality Control of 1,10-Phenanthroline.

Although manganese(II) is known to have no role in peroxymonosulfate (PMS) activation, through a series of sulfamethoxazole (SMX) oxidation experiments, we found that the addition of pyridine organic ligands can improve the catalytic activity and accelerate SMX oxidation For the organic ligands to be effective: the stability constant of the Mn(III) complex should be higher than that of the Mn(II) complex. A pos. correlation was observed between the SMX oxidation rate and Mn(II) concentration, and the maximum PMS utilization efficiency was achieved. Many shreds of evidence verified that neither •SO-4 nor •OH was associated with SMX oxidation The enhanced effect of phenanthroline on the Mn(II)/PMS system was attributed to the highly oxidative intermediate manganese species (Mn(V)), originating from the two-electron transfer reaction of complexed Mn(III) and PMS. Notably, the main oxidizing species did not change (η-(PMSO2) ∼ 100%) regardless of the initial PMSO concentration or pH value. Addnl., the anal. of SMX degradation products revealed that the oxygen transfer oxidation pathway was dominant in the Mn(II)/phenanthroline/PMS system, while the N radical coupling pathway also contributed significantly to SMX oxidation This work offers new insights into the formation of high-valent manganese species and provides a potential strategy for applying low-concentration Mn(II) to wastewater treatment.

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Recommanded Product: 5-Fluoroindoline. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5-Fluoroindoline, is researched, Molecular C8H8FN, CAS is 2343-22-8, about B(C6F5)3-promoted hydrogenations of N-heterocycles with ammonia borane. Author is Ding, Fangwei; Zhang, Yiliang; Zhao, Rong; Jiang, Yanqiu; Bao, Robert Li-Yuan; Lin, Kaifeng; Shi, Lei.

A transition-metal-free method for the B(C6F5)3-promoted hydrogenations of N-heterocycles using ammonia borane under mild reaction conditions was developed. The reaction afforded a broad range of hydrogenated products in moderate to good yields. The enantioselective versions for the corresponding products were also investigated via our approach, showing good feasibility.

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Rodriguez, Sonia; Schroeder, Kersten T.; Kayser, Margaret M.; Stewart, Jon D. published an article about the compound: (S)-Methyl 3-hydroxybutanoate( cas:53562-86-0,SMILESS:C[C@H](O)CC(OC)=O ).COA of Formula: C5H10O3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:53562-86-0) through the article.

E. coli strains expressing Gcy1p and Gre3p reduced β-keto esters R1COCHR2CO2R3 (R1 = Me, Et; R2 = H, Me, Et, allyl, propargyl; R3 = Me, Et) to give chiral β-hydroxy esters (S)- and (2R,3S)-R1CH(OH)CHR2CO2R3.

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Piperazine – Wikipedia,
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Related Products of 2343-22-8. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5-Fluoroindoline, is researched, Molecular C8H8FN, CAS is 2343-22-8, about Sustainable Radical Cascades to Synthesize Difluoroalkylated Pyrrolo[1,2-a]indoles. Author is Huang, Honggui; Yu, Menglin; Su, Xiaolong; Guo, Peng; Zhao, Jia; Zhou, Jiabing; Li, Yi.

We disclose herein a photocatalytic difluoroalkylation and cyclization cascade reaction of N-(but-2-enoyl)indoles with broad substrate scopes in up to 90% isolated yield. This method provides sustainable and efficient access to synthesize difluoroalkylated pyrrolo[1,2-a]indoles with a quaternary carbon center under mild conditions.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Celik, Hayati; Buyukaga, Mahmure; Celebier, Mustafa; Turkoz Acar, Ebru; Baymak, Melek Sirin; Gokhan-Kelekci, Nesrin; Palaska, Erhan; Erdogan, Hakki published the article 《Determination of pKa Values of Some Benzoxazoline Derivatives and the Structure-Activity Relationship》. Keywords: ionization constant deprotonation benzoxazolinone derivative analgetic antiinflammatory drug SAR.They researched the compound: 6-Acetylbenzo[d]oxazol-2(3H)-one( cas:54903-09-2 ).Recommanded Product: 54903-09-2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:54903-09-2) here.

The acid ionization constant (pKa) values of 2-(3H)-benzoxazolinone and its 17 derivatives were determined in buffered solutions by UV-vis spectrophotometry, potentiometry, and capillary zone electrophoresis techniques. The pKa values of the studied compounds were found to be in the range of 9.01 to 7.15. The advantages and limitations of each technique are discussed. The results suggest that the removal of a proton from the mol. occurred on the nitrogen atom of the 2-(3H)-benzoxazolinone ring and the analgesic/anti-inflammatory activities of the benzoxazolinone derivatives decrease when the pKa values of the compounds increase.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Recommanded Product: 54903-09-2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 6-Acetylbenzo[d]oxazol-2(3H)-one, is researched, Molecular C9H7NO3, CAS is 54903-09-2, about New halogenated chalcones with cytotoxic and carbonic anhydrase inhibitory properties: 6-(3-Halogenated phenyl-2-propen-1-oyl)-2(3H)-benzoxazolones. Author is Bilginer, Sinan; Gul, Halise I.; Erdal, Feyza S.; Sakagami, Hiroshi; Gulcin, Ilhami.

In this study, novel halogenated chalcones, 6-(3-halogenated phenyl-2-propen-1-one)-2(3H)-benzoxazolones (2a-n), were synthesized for the first time (except 2a), and their chem. structures were characterized by 1H NMR (NMR), 13C NMR, and high-resolution mass spectrometry spectra. Cytotoxic activities and carbonic anhydrase (CA) inhibitory effects of the compounds were studied to identify new possible drug candidate mols. Cytotoxicity results pointed out that compound 2m, 6-[3-(3-bromophenyl)-2-propenoyl]-2(3H)-benzoxazolone, had the highest cytotoxicity (CC50) and potency selectivity expression (PSE) values. Thus, compound 2m can be considered as a lead compound of the series in terms of cytotoxicity. When the CA inhibition results of the compounds were evaluated, it was found that the Ki values of the compounds ranged from 30.5 ± 11.3 to 65.5 ± 25.6 μM toward hCA I, and they ranged from 7.3 ± 1.8 to 58.8 ± 12.3 μM toward hCA II. However, the Ki values of the reference drug, acetazolamide (AZA), were 30.2 ± 7.8 and 4.4 ± 0.6 μM toward hCA I and hCA II, resp. According to the results obtained, compounds 2a-n had lower Ki values than AZA, whereas compounds 2a, 2b, 2e-g, 2l, and 2n had similar Ki values, compared with AZA. So, the compounds 2a, 2b, 2e-g, 2l, and 2n can be considered as lead mols. of this series for further considerations.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Computed Properties of C8H8FN. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5-Fluoroindoline, is researched, Molecular C8H8FN, CAS is 2343-22-8, about Acceptorless Dehydrogenation of N-Heterocycles by Merging Visible-Light Photoredox Catalysis and Cobalt Catalysis. Author is He, Ke-Han; Tan, Fang-Fang; Zhou, Chao-Zheng; Zhou, Gui-Jiang; Yang, Xiao-Long; Li, Yang.

Herein, the first acceptorless dehydrogenation of tetrahydroquinolines (THQs), indolines, and other related N-heterocycles, by merging visible-light photoredox catalysis and cobalt catalysis at ambient temperature, is described. The potential applications to organic transformations and hydrogen-storage materials are demonstrated. Primary mechanistic investigations indicate that the catalytic cycle occurs predominantly by an oxidative quenching pathway.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Journal of Organometallic Chemistry called Preparation, reactivity and photoluminescence of copper(I) borohydride complexes with bis[(2-diphenylphosphino)phenyl] ether as chelating ligand, Author is Ferraro, Valentina; Castro, Jesus; Trave, Enrico; Bortoluzzi, Marco, which mentions a compound: 66-71-7, SMILESS is C1=CC3=C(C2=NC=CC=C12)N=CC=C3, Molecular C12H8N2, Reference of 1,10-Phenanthroline.

Bis[(2-diphenylphosphino)phenyl] ether (DPEphos) was used as chelating ligand to prepare the corresponding borohydride complex [Cu(κ2-BH4)(DPEphos)], whose structure was ascertained spectroscopically and by means of X-ray diffraction. The spectroscopic assignments related to the coordinated borohydride were confirmed by preparing the isotopologue [Cu(κ2-BD4)(DPEphos)]. Reaction of [Cu(κ2-BH4)(DPEphos)] with triflic acid afforded the dimer [Cu2(μ-BH4)(DPEphos)2][OTf] (OTf = triflate). The borohydride complexes exhibited appreciable blue emission upon excitation with UV light at room temperature [Cu(κ2-BH4)(DPEphos)] revealed to be a suitable precursor for the preparation of luminescent heteroleptic copper(I) complexes having general formula [Cu(NN̂)(DPEphos)]+ (NN̂ = 1,10-phenantroline, 2,9-dimethyl-1,10-phenantroline, 2,2′-bypiridine, 4,4′-dimethyl-2,2’bipyridine).

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Piperazine – Wikipedia,
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Related Products of 53562-86-0. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: (S)-Methyl 3-hydroxybutanoate, is researched, Molecular C5H10O3, CAS is 53562-86-0, about Asymmetric reduction of β-keto esters with an enzyme from bakers’ yeast.

Various β-keto esters have been reduced by one of β-keto ester reductases isolated from bakers’ yeast. The corresponding β-hydroxy esters have been obtained in excellent enantiomeric and diastereomeric excesses, resp. It has also been determined that the reductase recognizes the stereochem. not only at the β-carbon but also at the α-carbon affording one of the four possible diastereoisomers of α-substituted β-hydroxy esters predominantly. The stereoselectivity is excellent and chem. yields are moderate to good.

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Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics