Day: March 31, 2022

SDS of cas: 86404-63-9. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about Particle beam-mass spectrometric analysis of difluorophenyl triazole compounds using normal phase-HPLC. Author is Creaser, Colin S.; Stygall, James W.; Bowen, David V.; Pullen, Frank S..

Normal phase liquid chromatog. combined with particle beam mass spectrometry has been applied to the anal. of fluconazole, an anti-fungal agent, [2-(2,4-difluorophenyl)-1,3-bis(1H-1,2,4-triazol-1-yl)propan-2-ol] and a related intermediate, UK-51060 [2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl)ethan-2-one]. Electron ionization and chem. ionization have been investigated in combination with quadrupole ion trap and magnetic sector mass spectrometers and the spectra obtained compared with those for direct probe anal. A novel method for the introduction of the chem. ionization reagent gas via the interface is described for particle beam-magnetic sector mass spectrometry. Multi-stage scan routines have been implemented on the ion trap for the selective storage of analyte species and removal of solvent ions. Detection limits for both spectrometers have been determined and are discussed in terms of interface geometry and analyte transport characteristics. Normal phase HPLC on silica provided a good separation of the intermediate from the later eluting fluconazole peak.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Name: 6-Methylnicotinic acid. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 6-Methylnicotinic acid, is researched, Molecular C7H7NO2, CAS is 3222-47-7, about Versatile {Cp2Ti} Grafted Hetero-Polyoxotungstate Clusters: Synthesis, Crystal Structure, and Photocurrent Properties. Author is Singh, Vikram; Liu, Shuang; Ma, Pengtao; Drew, Michael G. B.; Wang, Jingping; Niu, Jingyang.

Polyoxotungstate supported titanocene {Cp2Ti}2+ clusters H6{K8(Cp2Ti)2P4W24O88(PO4)2}·14H2O (1), H6[Na2P4W14O58(Cp2Ti)2]·12H2O (2), and H2[K6{Cp2Ti}{PW9O33(WO2)}2{NC5H3(COOK)2}(NC5H3(CH3)COOK)·22H2O] (3) have been synthesized, and their single crystal x-ray structures have revealed unprecedented and intriguing structural features. The synthesized compounds have been characterized by various spectroscopic techniques including UV-vis, cyclic voltammogram, NMR, ESI-MS, and inductive coupled plasma spectroscopy (ICP) in solution and also by IR, TGA, and diffuse reflectance in the solid state. Clusters 1 and 2 are rare examples of lacunary POM supported titanocene clusters obtained by incorporating various phosphorus heteroatoms to form elusive phosphotungstate assemblies, whereas 3 is an unprecedented organometallic as well as heteroleptic pyridyl functionalized POM. Clusters 1-3 show transient photocurrent ON/OFF behavior upon UV-light irradiation and also exhibit characteristic TiIV/III intravalence electron transfer. This behavior is also established by their cyclic voltammograms in mixed phosphate buffers (Na2HPO4/NaH2PO4) which show the evidence of POM supported {Cp2Ti}2+/+ species in their redox solution Furthermore, ESR line broadening is also observed in these clusters at room temperature, a fact which also confirms the formation of partially reduced/oxidized {Cp2Ti}2+/+ species leading to TiIV/III intravalence electron transfers within all three clusters. The {Cp2Ti}2+ decorated polyoxometalate cluster 3 shows improved transient photocurrent behavior which may be due to the presence of pyridyl carboxyl ions which provide better surface contact for the cluster mol. through the carboxylate moiety to the ITO electrode.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – 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, Research Support, Non-U.S. Gov’t, Journal of Medicinal Chemistry called Design, Synthesis, Evaluation, and Structural Studies of C2-Symmetric Small Molecule Inhibitors of Programmed Cell Death-1/Programmed Death-Ligand 1 Protein-Protein Interaction, Author is Basu, Subhadwip; Yang, Jeffrey; Xu, Bin; Magiera-Mularz, Katarzyna; Skalniak, Lukasz; Musielak, Bogdan; Kholodovych, Vladyslav; Holak, Tad A.; Hu, Longqin, which mentions a compound: 562074-59-3, SMILESS is N#CC1=CN=CC(CCl)=C1, Molecular C7H5ClN2, Reference of 5-(Chloromethyl)nicotinonitrile.

A series of C2-sym. inhibitors was designed and evaluated for inhibitory activity against the programmed cell death-1/programmed death-ligand 1(PD-1/PD-L1) protein-protein interaction (PPI) in a homogeneous time-resolved fluorescence (HTRF) assay and PD-1 signaling in cell-based coculture assays. C2-sym. inhibitors 2a (LH1306) and 2b (LH1307) exhibited IC50 values of 25 and 3.0 nM, resp., in the HTRF assay. While 2a was ∼3.8-fold more potent than previously reported inhibitor 1a, 2b could not be differentiated from 1b due to their high potency and the limit of our HTRF assay conditions. In one cell-based coculture PD-1 signaling assay, 2a and 2b were 8.2- and 2.8-fold more potent in inhibiting PD-1 signaling than 1a and 1b, resp. NMR and X-ray cocrystal structural studies provided more structural insights into the interaction between 2b and PD-L1; 2b binds to PD-L1 at the PD-1 binding site and induces the formation of a more sym. arranged PD-L1 homodimer than that previously reported for other inhibitors.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called (Z)-1-(2,4-Difluorophenyl)-3-(4-fluorophenyl)-2-(1H-1,2,4-triazol-1-yl)prop-2-en-1-one, published in 2012-04-30, which mentions a compound: 86404-63-9, Name is 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, Molecular C10H7F2N3O, Recommanded Product: 86404-63-9.

In the title mol., C17H10F3N3O, the C=C bond connecting the triazole ring and 4-fluorophenyl groups adopts a Z conformation. The triazole ring forms dihedral angles of 15.3(1) and 63.5(1)°, with the 2,4-difluoro-substituted and 4-fluoro-substituted benzene rings, resp. The dihedral angle between the two benzene rings is 51.8(1)°. Crystallog. data and at. coordinates are given.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Ferretti, R.; Gallinella, B.; La Torre, F.; Zanitti, L. published an article about the compound: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone( cas:86404-63-9,SMILESS:FC1=CC=C(C(CN2N=CN=C2)=O)C(F)=C1 ).Formula: C10H7F2N3O. 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:86404-63-9) through the article.

Coupled achiral-chiral high-performance liquid chromatog. (HPLC) with an achiral amino-based column coupled with a chiral amylose-based column was used for qual. and quant. determination of the potential chiral and achiral impurities of voriconazole (UK-109,496), a new antifungal agent with two stereogenic centers. The effect of the organic mobile-phase modifier, ethanol, was studied. The assay response was linearly dependent on concentration over the range 1.2-40.4 μg for voriconazole and 2.5-104.0 ng for the impurities. The limit of detection was 2.5 ng for each analyte.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Recommanded Product: 86404-63-9. 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: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about New azoles with potent antifungal activity: Design, synthesis and molecular docking. Author is Che, Xiaoying; Sheng, Chunquan; Wang, Wenya; Cao, Yongbing; Xu, Yulan; Ji, Haitao; Dong, Guoqiang; Miao, Zhenyuan; Yao, Jianzhong; Zhang, Wannian.

In response to the urgent need for novel antifungal agents with improved activity and broader spectrum, computer modeling was used for rational design of novel antifungal azoles. On the basis of the active site of lanosterol 14α-demethylase from Candida albicans (CACYP51), a series of new azoles with substituted-phenoxypropyl piperazine side chains were rationally designed and synthesized. In vitro antifungal activity assay indicates that the new azoles show good activity against most of the tested pathogenic fungi. Interestingly, the designed compounds are also active against an azole-resistant clin. strain. Compared to fluconazole and itraconazole, several compounds (such as I) show higher antifungal activity and a broader spectrum, which are promising leads for the development of novel antifungal agents.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called (Z)-1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone oxime, published in 2011-12-31, which mentions a compound: 86404-63-9, Name is 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, Molecular C10H7F2N3O, Quality Control of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone.

In the title compound, C10H8F2N4O, the dihedral angle between the rings is 65.4(1)°. In the crystal, intermol. O-H…N and C-H…F H bonds link the mols. in a stacked arrangement along the a and c axes, resp. Crystallog. data and at. coordinates are given.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Quality Control of 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone. 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: 1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanone, is researched, Molecular C10H7F2N3O, CAS is 86404-63-9, about ‘Online’ liquid chromatography/nuclear magnetic resonance mass spectrometry – a powerful spectroscopic tool for the analysis of mixtures of pharmaceutical interest. Author is Pullen, Frank S.; Swanson, Alistair G.; Newman, Michael J.; Richards, Don S..

Liquid chromatog. (LC), simultaneously coupled with both NMR and mass spectrometry (MS) ‘online’ is a powerful structural tool and has a potentially vast range of uses within the pharmaceutical industry. Data from a mixture of fluconazole and related triazoles were obtained from an LC/NMR-MS system developed ‘inhouse’, demonstrating the power of this novel anal. approach.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application In Synthesis of 4-(4-Bromophenyl)-5-methylthiazol-2-amine. 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: 4-(4-Bromophenyl)-5-methylthiazol-2-amine, is researched, Molecular C10H9BrN2S, CAS is 65705-44-4, about Synthesis and antimicrobial activities of some novel 2,3-substituted-1,3-thiazolidin-4-ones derived from 2-amino-1,3-thiazole.

New 2,3-substituted-1,3-thiazolidin-4-one (6a-f) were prepared by cyclocondensation of 2-[6-(4-chlorobenzyloxy)-2-naphthyliden]-4- (4-substituted phenyl)-5-methyl-1,3-thiazole (5a-f) and mercaptoacetic acid in benzene. The synthesized compounds were characterized on the basis of elemental anal., 1H NMR, 13C NMR and FT-IR. The prepared compounds have been screened in vitro against two Gram- pos. Staphylococcus aureus, Staphylococcus epidermidis, and two Gram-neg. Escherichia coli, Pseudomonas aernuginosa for antibacterial activity and two fungal strains Candida albicans, Candida krusei for antifungal activity using ciprofloxacin, ampicillin and ketoconazole with minimal inhibitory concentration (MIC) value of 10 mcg/L in DMSO. Compounds 6a and 6d showed good antibacterial and antifungal activities compared to reference medications utilized within this study.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Method development and validation study for quantitative determination of genotoxic impurity and its precursor in fluconazole sample by liquid chromatography-tandem mass spectrometry, published in 2016, which mentions a compound: 86404-63-9, mainly applied to fluconazole liquid chromatog tandem mass spectrometry, Electric Literature of C10H7F2N3O.

Objective: The objective of this work is method development and validation study for quant. determination of 1-[2-(2,4-difluorophenyl)-2,3-epoxypropyl]-1H-1,2,4-triazole, a genotoxic impurity and its precursor in a fluconazole drug sample by liquid chromatog.-tandem mass spectrometry. Methods: LC-MS/MS anal. of these impurities was performed on Hypersil BDS C18 (100 mm x 4.0 mm, 3 μm) column. 5 mmol ammonium acetate and acetonitrile in the ratio of 65:35 (volume/volume) was used as the mobile phase with a flow rate of 0.4 mL/min. The developed method was accomplished with a short run time of 10 min. Triple quadrupole mass detector coupled with pos. electrospray ionization was used for the quantification of genotoxic impurities in multiple reaction monitoring (MRM). Results: The method was validated as per International Conference on Harmonization (ICH) guidelines. The method was linear in the range of 0.30 μg/g to 11.37 μg/g for impurity A and 0.30 μg/g to 11.34 μg/g for impurity B with a correlation coefficient of 0.999. The accuracy of the method was in the range of 98.25 % to 100.53 % for both impurities. Conclusion: A specific, selective, highly sensitive and more accurate anal. method using LC-MS/MS coupled with pos. electrospray ionization has been developed for the quantification of genotoxic impurity (1-[2-(2,4-difluorophenyl)-2,3-epoxypropyl]-1H-1,2,4-triazole) and its precursor (1-(2,4-difluorophenyl)-2-[1,2,4]triazol-1-yl-ethanone) at 0.3 μg/g with respect to the 5.0 mg/mL of fluconazole.

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Reference:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics