Tag: 100-200

Comparable Ionicity of the Solutions of Aprotic and Protic Ionic Liquids by Anion Substitution was written by Jain, Preeti;Kumar, Anil. And the article was included in Journal of Solution Chemistry in 2017.Recommanded Product: 21252-69-7 This article mentions the following:

Temperature dependent molar conductances and fluidities of bisulfate and Et sulfate anion-based ionic liquids were measured. The extent of dissociation of the ionic liquids was estimated from the Walden plot in term of ionicity. The ionicity mainly depends on the magnitude of Coulombic forces, altered by the anion’s Lewis basicity. Aqueous solutions of aprotic ionic liquids, in general, possesses ionicity in the range of ≈70-99%. This article reveals that the substitution of the anion by bisulfate and ethylsulfate reduces the ionicity of aqueous solution of these ionic liquids to the range of 10-37%. This is very close to that exhibited by some of the protic ionic liquids and phosphonium based ionic liquids with sweetner anions. The concentration dependent molar conductance of these ionic liquids has been fitted to Mahiuddin and Ismail’s equation. To our surprise, the molar conductances of bisulfate-based aprotic ionic liquids are remarkably high, even though these ionic liquids possess lower ionicity. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Recommanded Product: 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Recommanded Product: 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Tungstate supported mesoporous silica SBA-15 with imidazolium framework as a hybrid nanocatalyst for selective oxidation of sulfides in the presence of hydrogen peroxide was written by Sedrpoushan, Alireza;Hosseini-Eshbala, Fereshteh;Mohanazadeh, Farajollah;Heydari, Masoud. And the article was included in Applied Organometallic Chemistry in 2018.Related Products of 21252-69-7 This article mentions the following:

A new heterogeneous catalyst (SBA-15/Im/WO₄^2-) was prepared, and then its performance in the oxidation of organic sulfides was studied (using 30% H₂O₂ as green oxidant under neutral reaction conditions). This organic-inorganic hybrid mesoporous material was characterized by various techniques, such as FTIR, inductively coupled plasma, x-ray powder diffraction, high-resolution-TEM, N₂ adsorption-desorption and TGA. The catalyst was also applied to the selective oxidation of various sulfides. The hybrid catalyst was easily recovered, and was very stable and retained good activity for at least five successive runs without any addnl. activation. Also, there was no remarkable decrease in catalyst activity and selectivity. The products could be easily isolated by just removing the solvent after filtering the catalyst. The yields of the catalytic productions through this catalyst were at 75-97%. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Related Products of 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole has become an important synthon in the development of new drugs. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.Related Products of 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Biocarbon from brewery residues as a counter electrode catalyst in dye solar cells was written by Tiihonen, Armi;Siipola, Virpi;Lahtinen, Katja;Pajari, Heikki;Widsten, Petri;Tamminen, Tarja;Kallio, Tanja;Miettunen, Kati. And the article was included in Electrochimica Acta in 2021.Product Details of 1632-83-3 This article mentions the following:

The authors explore biocarbon as a low-cost, abundant, and environmentally friendly replacement for Pt in dye solar cells. The authors introduce a novel biochar based on brewery residues with good performance and stability potential as a counter electrode in complete dye solar cells, and present the 1st long-term stability test results of a biocarbon in complete dye solar cells. The hydrothermally carbonized and KOH-activated brewer’s spent grain (BSG) offers an extremely high surface area for catalytic reactions (2190 m²/g). Counter electrodes based on this material provide a promising initial performance (efficiency of 3.6 ± 0.2% for biocarbon solar cells compared to 5.3 ± 0.2% for reference cells with Pt catalyst) with current production and the total resistance of solar cells very close to that of Pt based solar cells. In an extended accelerated aging test, the best biocarbon dye solar cell maintained over 86% of its initial efficiency for 3000 h. Also, the biocarbon reduced the degradation via loss of electrolyte charge carriers during aging. Based on these results, the activated BSG biocarbon provides a promising alternative for Pt catalysts. In the experiment, the researchers used many compounds, for example, 1-Methylbenzimidazole (cas: 1632-83-3Product Details of 1632-83-3).

1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. This ring system is present in important biological building blocks, such as histidine and the related hormone histamine.Product Details of 1632-83-3

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Palladium Catalyzed Electrophilic C2-Arylation of Azoles by Aryltriazenes in Ionic Liquid Promoted by Acidic Ionic Liquid was written by Sutar, Suraj M.;Savanur, Hemantkumar M.;Patil, Chidanand;Prabhala, Pavankumar;Aridoss, Gopalakrishnan;Kalkhambkar, Rajesh G.. And the article was included in ChemistrySelect in 2020.Application of 1632-83-3 This article mentions the following:

A green C-H bond activation of azole based bio-pertinent substrates such as benzoxazole, benzothiazole, benzimidazole, etc. are accomplished using readily prepared 1-aryltriazenes RN=NNR¹R² (R = C₆H₅, 4-CH₃C₆H₄, 4-ClC₆H₄, etc.; R¹ = R² = Et; R¹R² = -(CH₂)₅-, -(CH₂)₂O(CH₂)₂-) as arylating agent. Under an optimized condition employing Pd(OAc)₂ and CuI in either hydrophilic [Bmim][BF₄] or hydrophobic [Bmim][PF₆] IL medium with [BMIM(SO₃H)][OTf] as a promoter, these arylation reactions proceeded smoothly to afford 2-aryl substituted azoles I (X = O, S, NCH₃, NC₆H₅, 4-CH₃C₆H₄N; R³ = H, Me; R⁴ = H, NH₂, Cl, CH₃) and 2-(p-tolyl)thiazole in acceptable to better yields besides noticeable functional group tolerance. The prospective for recovery and re-use of ionic liquid solvent is demonstrated. In the experiment, the researchers used many compounds, for example, 1-Methylbenzimidazole (cas: 1632-83-3Application of 1632-83-3).

1-Methylbenzimidazole (cas: 1632-83-3) belongs to imidazole derivatives. Many natural products, especially alkaloids, contain the imidazole ring. These imidazoles share the 1,3-C3N2 ring but feature varied substituents. Imidazole derivatives have antibacterial, antifungal and anticancer functionality. It interacts with DNA and also binds to protein and stops cell division.Application of 1632-83-3

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Organocatalytic upgrading of the key biorefining building block by a catalytic ionic liquid and N-heterocyclic carbenes was written by Liu, Dajiang;Zhang, Yuetao;Chen, Eugene Y.-X.. And the article was included in Green Chemistry in 2012.Application of 92507-97-6 This article mentions the following:

The present study of rapid degradation of the key biorefining building block 5-hydroxymethylfurfural (HMF) in an ionic liquid (IL), 1-ethyl-3-methylimidazolium acetate ([EMIM]OAc), has led to highly selective and efficient upgrading of HMF to 5,5′-di(hydroxymethyl)furoin (DHMF), a promising C₁₂ kerosene/jet fuel intermediate. This HMF upgrading reaction is carried out under industrially favorable conditions (i.e., ambient atm. and 60-80 °C), catalyzed by N-heterocyclic carbenes (NHCs), and complete within 1 h; this process selectively produces DHMF with yields up to 98% (by HPLC or NMR) or 87% (unoptimized, isolated yield). Mechanistic studies have yielded four lines of evidence that support the proposed carbene catalytic cycle for this upgrading transformation catalyzed by the acetate IL and NHCs. In the experiment, the researchers used many compounds, for example, 1-ethyl-2,3-dimethylimidazolium chloride (cas: 92507-97-6Application of 92507-97-6).

1-ethyl-2,3-dimethylimidazolium chloride (cas: 92507-97-6) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. The pharmacophore of imidazole exists in bioactive compounds including amino acids, plant growth regulators and therapeutic agents.n increase of the alkyl chain length of the alcohols. Application of 92507-97-6

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In vitro studies on the antioxidant and protective effect of 2-substituted-8-hydroxyquinoline derivatives against H₂O₂-induced oxidative stress in BMSCs was written by Wang, Ting-Ting;Zeng, Gong-Chang;Li, Xi-Can;Zeng, He-Ping. And the article was included in Chemical Biology & Drug Design in 2010.Synthetic Route of C9H8N2O This article mentions the following:

Novel 2-vinyl-8-hydroxyquinoline derivatives as potential antioxidants and regulators of H₂O₂-induced oxidative stress in rat bone marrow mesenchymal stem cells (MSCs) are first reported. The antiradical properties and the reducing power of these compounds were assessed using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and auto-oxidation of pyrogallol method, resp. The activity against lipid peroxidation was determined using ammonium thiocyanate method. The results revealed that introduction of electron-donating groups at 2nd position decreased the antioxidant activities of 8-hydroxyquinoline derivatives In addition, compound 4, the structure of which is similar to melatonin, exhibited superior antioxidant activities in scavenging DPPH free radical,.O₂ free radical, and anti-LPO activities. Except for compounds 7, 12, and 15, the other compounds exhibited a stimulatory effect on MSCs growth. Using hydrogen peroxide (H₂O₂), we also investigated the protective efficacy of 2-vinyl-8-hydroxyquinoline derivatives against oxidative stress-induced cell death of MSCs. In the experiment, the researchers used many compounds, for example, 1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4Synthetic Route of C9H8N2O).

1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. The pharmacophore of imidazole exists in bioactive compounds including amino acids, plant growth regulators and therapeutic agents.n increase of the alkyl chain length of the alcohols. Synthetic Route of C9H8N2O

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Molecular Control of the Catalytic Properties of Rhodium Nanoparticles in Supported Ionic Liquid Phase (SILP) Systems was written by Bordet, Alexis;Moos, Gilles;Welsh, Calum;Licence, Peter;Luska, Kylie L.;Leitner, Walter. And the article was included in ACS Catalysis in 2020.HPLC of Formula: 21252-69-7 This article mentions the following:

Rhodium nanoparticles (NPs) immobilized on imidazolium-based supported ionic liquid phases (Rh@SILP) act as effective catalysts for the hydrogenation of biomass-derived furfuralacetone. The structure of ionic liquid-type (IL) mol. modifiers was systematically varied regarding spacer, side chain, and anion to assess the influence on the NP synthesis and their catalytic properties. Well-dispersed Rh NPs with diameters in the range of 0.6-2.0 nm were formed on all SILP materials, whereby the actual size was dependent significantly on the IL structure. The resulting variations in catalytic activity for hydrogenation of the C=O moiety in furfuralacetone allowed control of the product selectivity to obtain either the saturated alc. or the ketone in high yield. Experiments conducted under batch and continuous flow conditions demonstrated that Rh NPs immobilized on SILPs with suitable IL structures are more active and much more stable than Rh@SiO₂ catalyst synthesized on unmodified silica. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7HPLC of Formula: 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . In contrast, the solubility of benzimidazoles in alcohols (C3–C6) is higher than in water and generally decreases with a The pharmacophore of imidazole exists in bioactive compounds including amino acids, plant growth regulators and therapeutic agents.n increase of the alkyl chain length of the alcohols. HPLC of Formula: 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Synthesis, characterizations and anticorrosion applications of three new gemini ionic liquids. was written by Nessim, M. I.;Zaky, M. T.;Deyab, M. A.. And the article was included in Journal of Molecular Liquids in 2018.Related Products of 21252-69-7 This article mentions the following:

Three gemini ionic liquids namely, 3,3′-(1,4-phenylenebis(methylene))bis(1-alkyl-1H-imidazol-3-ium)bromide IL1, IL2, and IL3, were prepared and characterized via the conventional tools of anal., elemental anal., IR, and ¹H NMR spectroscopy. The thermal stability of these compounds was studied, using thermogravimetric anal. (TGA) technique. The gemini ionic liquids were tested as corrosion inhibitors for stainless steel (304 SS) in 0.5 M H2SO4 solution using electrochem. techniques. The Results showed that gemini ionic liquids were effective with optimal corrosion inhibition values of 90.7%, 97.3% and 82.6% for IL1, IL2 and IL3, resp. The data confirmed also gemini ionic liquids are mixed type inhibitors. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Related Products of 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole derivatives generally have good solubility in protic solvents. Simple imidazole derivatives, such as 1H-imidazole, 2-methyl-1H-imidazole, and 1,2-dimethylimidazole, have very high solubility in water. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Related Products of 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Imidazole analogues of resveratrol: synthesis and cancer cell growth evaluation was written by Bellina, Fabio;Guazzelli, Nicola;Lessi, Marco;Manzini, Chiara. And the article was included in Tetrahedron in 2015.SDS of cas: 25676-75-9 This article mentions the following:

Novel trans-restricted analogs of resveratrol in which the C-C double bond of the natural derivative was replaced by diaryl substituted imidazole analogs were designed. The syntheses of 1,4-, 2,4-, and 2,5-diarylimidazoles, in which the two aryl moieties are linked to the heteroaromatic core in a 1,3 fashion to preserve the trans stereochem., were successfully carried out by regioselective sequential transition metal-catalyzed arylations of simple, com. available imidazole precursors. The anticancer activity of selected analogs was evaluated in vitro against the NCI-60 human tumor cell lines panel. From this screening, the authors were able to select a synthetic candidate that resulted more active than its natural lead. In the experiment, the researchers used many compounds, for example, 4-Bromo-1-methylimidazole (cas: 25676-75-9SDS of cas: 25676-75-9).

4-Bromo-1-methylimidazole (cas: 25676-75-9) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.SDS of cas: 25676-75-9

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Phenotypic and transcriptomic response of auxotrophic Mycobacterium avium subsp. paratuberculosis leuD mutant under environmental stress was written by Chen, Jenn-Wei;Scaria, Joy;Chang, Yung-Fu. And the article was included in PLoS One in 2012.Product Details of 26832-08-6 This article mentions the following:

Mycobacterium avium subsp. paratuberculosis (MAP) is the causative agent of severe gastroenteritis in cattle. To gain a better understanding of MAP virulence, we investigated the role of leuD gene in MAP metabolism and stress response. For this, we have constructed an auxotrophic strain of MAP by deleting the leuD gene using allelic exchange. The wildtype and mutant strains were then compared for metabolic phenotypic changes using Biolog phenotype microarrays. The responses of both strains to physiol. relevant stress conditions were assessed using DNA microarrays. Transcriptomic data was then analyzed in the context of cellular metabolic pathways and gene networks. Our results showed that deletion of leuD gene has a global effect on both MAP phenotypic and transcriptome response. At the metabolic level, the mutant strain lost the ability to utilize most of the carbon, nitrogen, sulfur, phosphorus and nutrient supplements as energy source. At the transcriptome level, more than 100 genes were differentially expressed in each of the stress condition tested. Systems level network anal. revealed that the differentially expressed genes were distributed throughout the gene network, thus explaining the global impact of leuD deletion in metabolic phenotype. Further, we find that leuD deletion impacted metabolic pathways associated with fatty acids. We verified this by exptl. estimating the total fatty acid content of both mutant and wildtype. The mutant strain had 30% less fatty acid content when compared to wildtype, thus supporting the results from transcriptional and computational analyses. Our results therefore reveal the intricate connection between the metabolism and virulence in MAP. In the experiment, the researchers used many compounds, for example, 1H-Imidazole-4-carboxamide (cas: 26832-08-6Product Details of 26832-08-6).

1H-Imidazole-4-carboxamide (cas: 26832-08-6) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).Product Details of 26832-08-6

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem