Tag: 200-300

Lipase-catalyzed synthesis of caffeic acid phenethyl ester in ionic liquids: effect of specific ions and reaction parameters was written by Wang, Jun;Li, Jing;Zhang, Leixia;Gu, Shuangshuang;Wu, Fuan. And the article was included in Chinese Journal of Chemical Engineering in 2013.Application In Synthesis of 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate The following contents are mentioned in the article:

Caffeic acid phenethyl ester (CAPE) is a rare, naturally occurring phenolic food additive. This work systematically reported fundamental data on conversion of caffeic acid (CA), yield of CAPE, and reactive selectivity during the lipase-catalyzed esterification process of CA and phenylethanol (PE) in ionic liquids (ILs). Sixteen ILs were selected as the reaction media, and the relative lipase-catalyzed synthesis properties of CAPE were measured in an effort to enhance the yield of CAPE with high selectivity. The results indicated that ILs containing weakly coordinating anions and cations with adequate alkyl chain length improved the synthesis of CAPE. [Emim][Tf₂N] was selected as the optimal reaction media. The optimal parameters were as follows by response surface methodol. (RSM): reaction temperature, 84.0; mass ratio of Novozym 435 to CA, 14:1; and molar ratio of PE to CA, 16:1. The highest reactive selectivity of CAPE catalyzed by Novozym 435 in [Emim][Tf₂N] reached 64.55% (CA conversion 98.76% and CAPE yield 63.75%, resp.). Thus, lipase-catalyzed esterification in ILs is a promising method suitable for CAPE production This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4Application In Synthesis of 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate).

1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) 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. 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).Application In Synthesis of 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Effects of [HMIM]HSO₄ and [OMIM]HSO₄ on the electrodeposition of zinc from sulfate electrolytes was written by Zhang, Qibo;Hua, Yixin. And the article was included in Journal of Applied Electrochemistry in 2009.Category: imidazoles-derivatives The following contents are mentioned in the article:

The effects of the organic additives 1-hexyl-3-methylimidazolium hydrogen sulfate ([HMIM]HSO₄) and 1-octyl-3-methylimidazolium hydrogen sulfate ([OMIM]HSO₄) on current efficiency (CE), power consumption (PC), polarization behavior of the cathode, deposit morphol., and crystallog. orientation during electrodeposition of Zn from acidic sulfate solution were studied. The results were compared with those of a common industrial additive, gum arabic. Addition of these additives increases current efficiency, decreases power consumption, and improves the surface morphol. at lower concentrations Both the additives showed similar polarization behavior to gum arabic and the extent of polarization was in the order: Gum arabic > [OMIM]HSO₄ > [HMIM]HSO₄. The nature of the electrode reactions was studied through measurements of Tafel slopes, transfer coefficients, and exchange current densities. Data obtained from x-ray diffractograms revealed that the presence of any of these additives did not change the structure of the electrodeposited Zn but affected the crystallog. orientation of the crystal planes. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4Category: imidazoles-derivatives).

1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) 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 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).Category: imidazoles-derivatives

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Effect of cation alkyl chain length on liquid-liquid equilibria of {ionic liquids + thiophene + heptane}: COSMO-RS prediction and experimental verification was written by Song, Zhen;Zhang, Jingjing;Zeng, Qian;Cheng, Hongye;Chen, Lifang;Qi, Zhiwen. And the article was included in Fluid Phase Equilibria in 2016.Related Products of 478935-29-4 The following contents are mentioned in the article:

When selecting ionic liquid (IL) as solvent for extraction processes, the cation alkyl chain length is an important structural variation, while research particularly concerning its effect is lacking. In this work, the effect of cation alkyl chain length on the liquid-liquid equilibrium of {IL + thiophene + heptane}, an example for extractive desulfurization, was systematically investigated. The COSMO-RS model was employed to calculate the distributional coefficient (尾^{鈭?/sup>) and selectivity (S鈭?/sup>) at infinite dilution for thiophene of the combinations of 17 cations and 63 anions. Two different anion-dependent tendencies of the 尾鈭?/sup> with increasing the cation alkyl chain length were identified and analyzed by COSMO-RS theory. To verify the scarcely-reported decreasing 尾鈭?/sup> with longer cation alkyl chain, acetate ([OAc]–) was selected as representative and liquid-liquid equilibrium {[C_nMIM][OAc] + thiophene + heptane} (n = 2, 4, 6, 8) were exptl. determined, which validate the anion-dependency and demonstrate the highest extraction performance of [C₂MIM][OAc]. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4Related Products of 478935-29-4).}

1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) 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. Imidazole also acts as a microtubule destabilizing agents and inhibits topoisomerase and Cytochrome P450 Family 26 Subfamily A Member 1 (CYP26A1) enzymes.Related Products of 478935-29-4

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

A Prospective Cross-Screening Study on G-Protein-Coupled Receptors: Lessons Learned in Virtual Compound Library Design was written by Sanders, Marijn P. A.;Roumen, Luc;van der Horst, Eelke;Lane, J. Robert;Vischer, Henry F.;van Offenbeek, Jody;de Vries, Henk;Verhoeven, Stefan;Chow, Ken Y.;Verkaar, Folkert;Beukers, Margot W.;McGuire, Ross;Leurs, Rob;Ijzerman, Adriaan P.;de Vlieg, Jacob;de Esch, Iwan J. P.;Zaman, Guido J. R.;Klomp, Jan P. G.;Bender, Andreas;de Graaf, Chris. And the article was included in Journal of Medicinal Chemistry in 2012.Recommanded Product: 101018-70-6 The following contents are mentioned in the article:

We present the systematic prospective evaluation of a protein-based and a ligand-based virtual screening platform against a set of three G-protein-coupled receptors (GPCRs): the 尾-2 adrenoreceptor (ADRB2), the adenosine A_2A receptor (AA2AR), and the sphingosine 1-phosphate receptor (S1PR1). Novel bioactive compounds were identified using a consensus scoring procedure combining ligand-based (frequent substructure ranking) and structure-based (Snooker) tools, and all 900 selected compounds were screened against all three receptors. A striking number of ligands showed affinity/activity for GPCRs other than the intended target, which could be partly attributed to the fuzziness and overlap of protein-based pharmacophore models. Surprisingly, the phosphodiesterase 5 (PDE5) inhibitor sildenafil was found to possess submicromolar affinity for AA2AR. Overall, this is one of the first published prospective chemogenomics studies that demonstrate the identification of novel cross-pharmacol. between unrelated protein targets. The lessons learned from this study can be used to guide future virtual ligand design efforts. This study involved multiple reactions and reactants, such as 4-((Dimethylamino)methyl)-2-methyl-1H-benzo[d]imidazol-5-ol (cas: 101018-70-6Recommanded Product: 101018-70-6).

4-((Dimethylamino)methyl)-2-methyl-1H-benzo[d]imidazol-5-ol (cas: 101018-70-6) 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鈥揅6) is higher than in water and generally decreases with a This ring system is present in important biological building blocks, such as histidine and the related hormone histamine.Recommanded Product: 101018-70-6

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Computation of liquid-liquid equilibrium of organic-ionic liquid systems using NRTL, UNIQUAC and NRTL-NRF models was written by Haghtalab, Ali;Paraj, Aliakbar. And the article was included in Journal of Molecular Liquids in 2012.HPLC of Formula: 478935-29-4 The following contents are mentioned in the article:

Ionic liquids (ILs) with their limitless combination of cations and anions can offer an optimal solvent for a specific purpose especially separation processes. Among ionic liquids, alkyl-sulfate derivatives are the most promising ILs to be applied in industrial processes. The present work investigates liquid-liquid equilibrium phase behavior of 12-ILs comprising sulfate-based anions. Computation of liquid-liquid equilibrium for 36 ternary systems is carried out using three local composition models, namely non-random two liquid (NRTL), non-random two liquid non-random factor (NRTL-NRF) and universal quasi chem. (UNIQUAC) activity coefficient models. All the interaction parameters of the three models are regressed using an optimization program based on Simplex method of Nelder and Mead. Comparison of the results is expressed by root mean square deviation (rmsd) between the exptl. and calculated compositions It is demonstrated that the NRTL-NRF model presents very good satisfactory results with rmsd values of about 1.05 so that this model is highly appropriate to calculate thermodn. properties of ionic liquid solutions This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4HPLC of Formula: 478935-29-4).

1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) 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 also acts as a microtubule destabilizing agents and inhibits topoisomerase and Cytochrome P450 Family 26 Subfamily A Member 1 (CYP26A1) enzymes.HPLC of Formula: 478935-29-4

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Electrochemical properties of imidazolium salt electrolytes for electrochemical capacitor applications was written by McEwen, Alan B.;Ngo, Elen L.;LeCompte, Karen;Goldman, Jay L.. And the article was included in Journal of the Electrochemical Society in 1999.Product Details of 157310-73-1 The following contents are mentioned in the article:

The specific ionic conductivity, dynamic viscosity, and electrochem. stability of several imidazolium salts are reported as neat ionic liquids and their solutions in several organic solvents. The temperature dependence of conductivity and viscosity are analyzed for 1-ethyl-3-methylimidazolium (EMI⁺) and 1,2-dimethyl-3-n-propylimidazolium (DMPI⁺) salts, and the influence of bis(trifluoromethylsulfonyl)imide (Im^–), bis(perfluoroethylsulfonyl)imide (Beti^–), hexafluoroarsenate (AsF₆^–), hexafluorophosphate (PF₆^–), and tetrafluoroborate (BF₄^–) on these properties are discussed. These imidazolium salts make possible electrolytes with high concentration (>3 M), high room temperature conductivity (up to 60 mS/cm), and a wide window of stability (>4 V at 20 VA/cm²). Differential scanning calorimetric results confirm a large glass phase for the ionic liquids, with substantial (>80掳) supercooling. Thermal gravimetric results indicate the imidazolium salts with Im^– and Beti^– anions to be thermally more stable than the Li salt analogs. The Vogel-Tammann-Fulcher interpretation accurately describes the conductivity temperature dependence. This study involved multiple reactions and reactants, such as 1,2-Dimethyl-3-propyl-1H-imidazol-3-ium hexafluorophosphate(V) (cas: 157310-73-1Product Details of 157310-73-1).

1,2-Dimethyl-3-propyl-1H-imidazol-3-ium hexafluorophosphate(V) (cas: 157310-73-1) 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 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 157310-73-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Chitosan/heparin blends in ionic liquid produce polyelectrolyte complexes that quickly adsorb citrate-capped silver nanoparticles, forming bactericidal composites was written by Souza, Paulo R.;Vilsinski, Bruno H.;de Oliveira, Ariel C.;Berton, Sharise B. R.;Nunes, Catia S.;Kipper, Matt J.;Schrekker, Henri S.;Martins, Alessandro F.;Muniz, Edvani C.. And the article was included in Journal of Molecular Liquids in 2021.Formula: C10H20N2O4S The following contents are mentioned in the article:

We present chitosan (CHT)/heparin (HP) polyelectrolyte complexes (PECs) that quickly adsorb citrate-capped silver nanoparticles (AgNPs). CHT/HP blends in ionic liquid ([HMIm][HSO4]) form durable PECs after precipitation in water. CHT/HP PECs have pos. Zeta potentials (higher than +20 mV). They adsorb citrate-capped AgNPs (Zeta potential of – 12.25 mV) synthesized from Turkevichs method. PEC/AgNPs composites are characterized by spectroscopic, thermal, and microscopy analyses. AgNPs on the PEC surfaces are confirmed by transmission electron microscopy. PECs adsorb AgNPs from aqueous suspensions, achieving 鈮?95% of removal (17.18渭g of AgNPs per mg of PEC) after only 10 min. The pseudo-second-order kinetic model adjusted well to the exptl. data. The PECs release approx. 11.80渭g/mg Ag+ (66%) compared to the initial adsorbed AgNPs content (17.18渭g/mg) after 7200 min at pH 2.0. The PECs present low swelling degrees (between 130 and 150%), supporting high stability in water. PEC/AgNPs composites promote significant bactericidal activity toward Staphylococcus aureus and Escherichia coli between 0.25 and 0.5 mg/mL. This study shows a new strategy to create hybrid polysaccharide/AgNPs composites. PECs can stabilize the AgNPs and release Ag+ ions, supporting antimicrobial materials. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4Formula: C10H20N2O4S).

1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Formula: C10H20N2O4S

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

New ionic liquid-based preparative method for diosgenin from Rhizoma dioscoreae nipponicae was written by Yan, Wang;Ji, Luo;Hang, Song;Shun, Yao. And the article was included in Pharmacognosy Magazine in 2013.Application In Synthesis of 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate The following contents are mentioned in the article:

Background: Rhizoma dioscoreae nipponicae is a perennial herb and its roots have been widely used in Traditional Chinese Medicine (TCM). Objective: To develop and optimize the extraction and hydrolysis technol. of diosgenin from Rhizoma dioscoreae nipponicae. Materials and Methods: 1-methyt-3-(3-sulfopropyl)-imidazolium hydrogen sulfate ([PSMIM]HSO₄), as a kind of functional ionic liquid, replaced inorganic acid, and was used in a one-step ultrasonic extraction and hydrolysis for the preparation of diosgenin (the aglycon of dioscin and an important precursor chem. in the pharmaceutical industry) from Rhizoma dioscoreae nipponicae, for the first time. The effects of various factors were evaluated. The obtained product was studied using high performance liquid chromatog. (HPLC). Results: About 6.35 mg of diosgenin could be obtained from 2.0 g of raw material. Reusability and recycling of the ionic liquid were validated with fairly good results. The ionic liquid solution was reused four times, and the final extraction efficiency only decreased by 5%. Conclusion: In virtue of the obvious advantages of the green extraction and catalytic solvent, with further study, it is believed that this new one-step preparative method promises to replace the traditional methods. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4Application In Synthesis of 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate).

1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) 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 is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Application In Synthesis of 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Leaching of metals from printed circuit boards using ionic liquids was written by Barrueto, Yahaira;Hernandez, Pia;Jimenez, Yecid;Morales, Jaime. And the article was included in Journal of Material Cycles and Waste Management in 2021.HPLC of Formula: 478935-29-4 The following contents are mentioned in the article:

The rise in the electronics industry has impacted the environment through the large volumes of waste that are improperly disposed of and the growing demand for precious and rare metals from natural sources. Leaching of copper, cobalt, gold, and silver from printed circuit boards of waste cellular phone has been carried out using imidazolium cation-based ionic liquids (ILs). For the studied metals, the obtaining of selective leaching obtained is reported for the first time, where acidic ionic liquids ([Bmim]HSO₄ and [Hmim]HSO₄) leached copper and cobalt, while basic ionic liquids ([Bmim]Cl and [Bmim]Br) extracted gold and silver. The effect of temperature has been studied by testing at 60 and 80掳C, where the highest extraction was obtained at the lowest temperature The concentration of the ionic liquid was also studied through a test without ionic liquid and then varying from 20 to 60%, where at higher concentration the extraction is more efficient ratifying the use of ionic liquids as leaching solutions for metals. Ionic liquids have demonstrated the ability to leach metal ions as the primary reagent in the leaching solution The following extraction percentages were obtained for each metal: 86.2% copper, 99.5% cobalt, 40.8% gold, and 44.6% silver. This study involved multiple reactions and reactants, such as 1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4HPLC of Formula: 478935-29-4).

1-Hexyl-3-methyl-1H-imidazol-3-ium hydrogensulfate (cas: 478935-29-4) 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鈥揅6) is higher than in water and generally decreases with a Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.HPLC of Formula: 478935-29-4

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Two Mn^II, Cu^II complexes derived from 3,5-bis(1-imidazolyl)pyridine: Synthesis, DNA binding, Molecular docking and cytotoxicity studies was written by Zhu, Mingchang;Liu, Jiaxing;Su, Junqi;Meng, Bo;Feng, Yunhui;Jia, Bing;Peng, Tingting;Qi, Zhenzhen;Gao, Enjun. And the article was included in Applied Organometallic Chemistry in 2019.COA of Formula: C11H9N5 The following contents are mentioned in the article:

Two complexes [MnL₂(H₂O)₂]路2ClO₄ (complex 1) and [CuL(H₂O)₃]路2NO₃ (complex 2) (L = 3,5-bis(1-imidazolyl)pyridine) were designed and synthesized. The structures of the complexes were characterized by x-ray crystallog., elemental analyses, and IR spectra. The interaction capacity of the complexes with calf thymus DNA was studied by UV and fluorescence spectroscopy. Gel electrophoresis assay demonstrated the ability of the complexes to cleave the pBR322 plasmid DNA. Efficient binding properties of DNA were established by UV-visible, fluorescence, and gel electrophoresis. The intrinsic binding constants (K_b) are 0.1524 and 0.1041 for complexes 1 and 2, resp. The two complexes exhibited a higher cytotoxicity against HeLa cell lines and lower cytotoxicity toward normal cell lines. Flow cytometry demonstrated the cancer cell inhibitory rate of the two complexes. Computer-aided mol. docking studies were performed to visualize the binding mode of the drug candidate at the mol. level. Complex 1 exhibited a significant higher cancer cell inhibitory rate than cisplatin and other complexes. This study involved multiple reactions and reactants, such as 3,5-Di(1H-imidazol-1-yl)pyridine (cas: 1374155-84-6COA of Formula: C11H9N5).

3,5-Di(1H-imidazol-1-yl)pyridine (cas: 1374155-84-6) 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. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.COA of Formula: C11H9N5

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem