Author: Jessica.F

Category: imidazoles-derivativesIn 2020 ,《pH-sensitive, dynamic graft polymer micelles via simple synthesis for enhanced chemotherapeutic efficacy》 appeared in Journal of Biomaterials Applications. The author of the article were Li, Dapeng; Qin, Jiejie; Sun, Min; Yan, Guoqing; Tang, Rupei. The article conveys some information:

To promote chemotherapeutic efficacy and easier clin. transformation, a series of pH-sensitive and dynamic drug delivery systems with facile two-step synthesis and simple structure have been successfully constructed by the tunable grafting reaction between pH-sensitive ortho ester and poly(vinyl alc.). The amphipathic graft macromols. (PVA-g-OEx, x represents the percentage of feed between ortho esters and hydroxyl groups of polyvinyl alc.) could self-assemble into micelles and doxorubicin was embedded. These micelles exhibited pH-sensitivity to both extracellular and intracellular pH and demonstrated the following characteristics: (i) maintaining long-term storage and blood circulation stability at pH 7.4; (ii) responding to tumoral extracellular pH value following gradually larger nanoparticles for improved drug accumulation and retention; (iii) being sensitive to tumoral intracellular pH value following disintegration for rapid drug release to improve toxicity to tumor cells. Moreover, the doxorubicin-loaded micelle (PVA-g-OE30-DOX) showed similar cytotoxicity to free doxorubicin in vitro, but stronger tumor penetration and inhibition ability in vitro human liver carcinoma cell line multicellular tumor spheroids. In vivo biodistribution and tumor inhibition examinations demonstrated that PVA-g-OE30-DOX had more superior efficacy in significantly enhancing drug accumulation in tumor, restraining tumor growth while decreasing drug concentration in normal tissues. The pH-sensitive, dynamic graft polymer micelles via simple synthesis could be considered as a promising and effective drug carrier in tumor therapy. The experimental process involved the reaction of Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Category: imidazoles-derivatives)

Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a coupling agent in the synthesis of dipolar polyamides for nonlinear optical applications and polypeptides. It also used to make β-keto sulfones and sulfoxides, lead sequestering agents, and β-enamino acid derivatives.Category: imidazoles-derivatives

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Name: Di(1H-imidazol-1-yl)methanoneIn 2021 ,《Rhenium Nanostructures Loaded into Amino-Functionalized Resin as a Nanocomposite Catalyst for Hydrogenation of 4-Nitrophenol and 4-Nitroaniline》 appeared in Polymers (Basel, Switzerland). The author of the article were Cyganowski, Piotr; Dzimitrowicz, Anna; Jamroz, Piotr; Jermakowicz-Bartkowiak, Dorota; Pohl, Pawel. The article conveys some information:

The present work presents a new nanocomposite catalyst with rhenium nanostructures (ReNSs) for the catalytic hydrogenation of 4-nitrophenol and 4-nitroaniline. The catalyst, based on an anion exchange resin with functionality derived from 1,1′-carboimidazole, was obtained in the process involving anion exchange of ReO4- ions followed by their reduction with NaBH4. The amino functionality present in the resin played a primary role in the stabilization of the resultant ReNSs, consisting of ≈1% (weight/weight) Re in the polymer mass. The synthesized and capped ReNSs were amorphous and had the average size of 3.45 ± 1.85 nm. Then, the obtained catalyst was used in a catalytic reduction of 4-nitrophenol (4-NP) and 4-nitroaniline (4-NA). Following the pseudo-first-order kinetics, 5 mg of the catalyst led to a 90% conversion of 4-NP with the mass-normalized rate constant (km1) of 6.94 x 10-3 min-1 mg-1, while the corresponding value acquired for 4-NA was 7.2 x 10-3 min-1 mg-1, despite the trace amount of Re in the heterogenous catalyst. The obtained material was also conveniently reused. In the experiment, the researchers used Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Name: Di(1H-imidazol-1-yl)methanone)

Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a coupling agent in the synthesis of dipolar polyamides for nonlinear optical applications and polypeptides. It also used to make β-keto sulfones and sulfoxides, lead sequestering agents, and β-enamino acid derivatives.Name: Di(1H-imidazol-1-yl)methanone

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Recommanded Product: 1H-Benzo[d]imidazol-2-amineIn 2021 ,《Characterization of a novel carbendazim-degrading strain Rhodococcus sp. CX-1 revealed by genome and transcriptome analyses》 was published in Science of the Total Environment. The article was written by Long, Zhengnan; Wang, Xiuguo; Wang, Yingjun; Dai, Huawei; Li, Changhao; Xue, Yongfei; Deng, Yanfei; Zhang, Houpu; Yu, Yunlong; Fang, Hua. The article contains the following contents:

The persistence and ecotoxicity of carbendazim residues pose a potential risk to environmental ecol. and human health. Here, a novel and highly efficient carbendazim-degrading bacterium Rhodococcus sp. CX-1, capable of utilizing carbendazim as its sole source of carbon and energy, was isolated from contaminated soil. The biodegradation characteristics and metabolic pathways were studied by mass spectrometry, genomic annotation, and transcriptome anal. The degradation rate of carbendazim by strain CX-1 was 3.98-9.90 mg/L/h under different conditions, and the optimum degradation conditions were 40°C and pH 7.0. The addition of carbon sources (glucose, fructose, and sucrose, 100 mg/L) could accelerate carbendazim degradation HPLC-MS/MS identification suggested that carbendazim is first hydrolyzed into 2-aminobenzimidazole and then to 2-hydroxybenzimidazole, and is ultimately mineralized to carbon dioxide. The genome of strain CX-1 contained 6,511,628 bp nucleotides, 2 linear plasmids, 2 circular plasmids, and 6437 protein coding genes. Genome annotation and transcriptome anal. indicated that carbendazim degradation may be regulated by the degradation genes harbored in the chromosome and in plasmid 2, and two different degradation pathways of carbendazim by imidazole ring cleavage or benzene ring cleavage were predicted. This study provided new insight to reveal the biodegradation mechanism of carbendazim; furthermore, strain CX-1 is a promising bioresource for carbendazim bioremediation. In the experimental materials used by the author, we found 1H-Benzo[d]imidazol-2-amine(cas: 934-32-7Recommanded Product: 1H-Benzo[d]imidazol-2-amine)

1H-Benzo[d]imidazol-2-amine(cas: 934-32-7) can be used in the hydrolysis of a choline carbonate. It was also used in the synthesis of imidazo[1,2-a]benzimidazoles.Recommanded Product: 1H-Benzo[d]imidazol-2-amine

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Name: Di(1H-imidazol-1-yl)methanoneIn 2019 ,《Gold nano-urchin integrated label-free amperometric aptasensing human blood clotting factor IX: A prognosticative approach for “”Royal disease””》 was published in Biosensors & Bioelectronics. The article was written by Letchumanan, Iswary; Gopinath, Subash C. B.; Arshad, M. K. Md; Anbu, Periasamy; Lakshmipriya, Thangavel. The article contains the following contents:

This article is clearly presenting the development of a biosensor for human factor IX (FIX) to diagnose the blood clotting deficiency, a so-called ‘Royal disease’ using an interdigitated electrode (IDE) with the zinc oxide surface modification. Gold nano-urchins (GNUs) with 60 nm in diameter was integrated into a streptavidin-biotinylated aptamer strategy to enhance the active surface area. Two different comparative studies have been done to validate the system to be practiced in the current work holds with a higher capability for the high-performance sense. Whereby, the presence and absence of GNUs in the aptasensing system for FIX interaction were investigated using the amperometric measurement, using a linear sweep voltage of 0-2 V at 0.01 V step voltage. The detection limit was 6 pM based on 3s calculation when GNUs integrated aptamer assay was utilized for FIX detection, which shows 8 folds sensitivity enhancement comparing the condition in the absence of GNU and 50 folds higher than sensitive radio-isotope and surface plasmon resonance assays. Albeit, the surface and mol. characterizations were well demonstrated by SEM, at. force microscopy, 3D nano-profilometry and further supports were rendered by UV-Vis spectroscopy and Enzyme-linked apta-sorbent assay (ELASA). Furthermore, the spiking experiment was done by FIX-spikes in human blood serum in order to demonstrate the stability with a higher non-fouling.Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Name: Di(1H-imidazol-1-yl)methanone) was used in this study.

Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a coupling agent in the synthesis of dipolar polyamides for nonlinear optical applications and polypeptides. It also used to make β-keto sulfones and sulfoxides, lead sequestering agents, and β-enamino acid derivatives.Name: Di(1H-imidazol-1-yl)methanone

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Product Details of 616-47-7In 2019 ,《Self-assembled structure and dynamics of imidazolium-based protic salts in water solution》 was published in Physical Chemistry Chemical Physics. The article was written by Zhu, Haijin; Vijayaraghavan, R.; MacFarlane, Douglas R.; Forsyth, Maria. The article contains the following contents:

Protic ionic liquids containing cations with long alkyl chains can form self-assembled micelles, vesicles, microemulsions, and lyotropic liquid crystal structures in water, acid water or THF, etc. As a result of this unique property, they are regarded as a novel category of amphiphiles, and are gaining importance in the field of colloid and interface chem. The critical micelle concentration (CMC) of protic salts, e.g., alkyl-ammonium nitrates in water, was found to increase with decreasing chain length. It is generally believed that a long alkyl chain length is essential for the formation of self-assembled structures. So far, no self-assembled structure has been reported for protic ionic liquids with an alkyl chain length of n < 4. This paper reports on the structure and dynamics of two imidazolium based protic organic salts with no alkyl chain or a Me group (n = 1) attached to the cation in water solution, determined through a detailed anal. of NMR spectra and pulsed-field gradient NMR data. We demonstrate that these imidazolium cations with no or a short alkyl chain (n = 1) can form a self-assembled clustering structure in water solution, which has a strong influence on the diffusion behavior of imidazolium mol. ions. It is speculated that this self-assembled structure is likely to be present in other similar solutions of ionic liquids with short alkyl chains.1-Methyl-1H-imidazole(cas: 616-47-7Product Details of 616-47-7) was used in this study.

1-Methyl-1H-imidazole(cas: 616-47-7) is used as a precursor for the synthesis of pyrrole-imidazole polyamides, ionic liquids such as 1-butyl-3-methylimidazolium hexafluorophosphate.Product Details of 616-47-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Recommanded Product: 1H-Benzo[d]imidazol-2-amineIn 2021 ,《Augmentation of steroidal β-formylenamide with pyrazolo and benzimidazo moieties: A tandem approach to highly fluorescent steroidal heterocycles》 was published in Tetrahedron Letters. The article was written by Nongthombam, Geetmani Singh; Boruah, Romesh Chandra. The article contains the following contents:

A facile synthesis of pyrazolo[1,5-a]pyrimidine and benzimidazo[1,2-a]pyrimidine-annulated steroids is described from the novel reaction of β-formyl enamides with amino pyrazoles, indazoles and benzimidazoles. Several of the products exhibited fluorescence properties with high quantum yields. In the experiment, the researchers used 1H-Benzo[d]imidazol-2-amine(cas: 934-32-7Recommanded Product: 1H-Benzo[d]imidazol-2-amine)

1H-Benzo[d]imidazol-2-amine(cas: 934-32-7) can be used in the hydrolysis of a choline carbonate. It was also used in the synthesis of imidazo[1,2-a]benzimidazoles.Recommanded Product: 1H-Benzo[d]imidazol-2-amine

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

HPLC of Formula: 174501-65-6In 2021 ,《Surface charge density in electrical double layer capacitors with nanoscale cathode-anode separation》 was published in Journal of Physical Chemistry B. The article was written by Qing, Leying; Zhao, Shuangliang; Wang, Zhen-Gang. The article contains the following contents:

Using a dynamic d. functional theory, we study the charging dynamics, the final equilibrium structure, and the energy storage in an elec. double layer capacitor with nanoscale cathode-anode separation in a slit geometry. We derive a simple expression for the surface charge d. that naturally separates the effects of the charge polarization due to the ions from those due to the polarization of the dielec. medium and allows a more intuitive understanding of how the ion distribution within the cell affects the surface charge d. We find that charge neutrality in the half-cell does not hold during the dynamic charging process for any cathode-anode separation, and also does not hold at the final equilibrium state for small separations Therefore, the charge accumulation in the half-cell in general does not equal the surface charge d. The relationships between the surface charge d. and the charge accumulation within the half-cell are systematically investigated by tuning the electrolyte concentration, cathode-anode separation, and applied voltage. For high electrolyte concentrations, we observe charge inversion at which the charge accumulation exceeds the surface charge at special values of the separation In addition, we find that the energy d. has a maximum at intermediate electrolyte concentrations for a high applied voltage. The experimental process involved the reaction of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6HPLC of Formula: 174501-65-6)

3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6) is a member of lonic liquids. Actually, lonic liquids as innovative fluids have received wide attention only during the past two decades. The number of SCI papers published on lonic liquids has exponentially increased from a few in 1996 to >5000 in 2016, exceeding the annual growth rates of other popular scientific areas. HPLC of Formula: 174501-65-6

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《[1,2,4]Triazolo[1,5-a]pyrimidine Phosphodiesterase 2A Inhibitors: Structure and Free-Energy Perturbation-Guided Exploration》 was written by Tresadern, Gary; Velter, Ingrid; Trabanco, Andres A.; Van den Keybus, Frans; Macdonald, Gregor J.; Somers, Marijke V. F.; Vanhoof, Greet; Leonard, Philip M.; Lamers, Marieke B. A. C.; Van Roosbroeck, Yves E. M.; Buijnsters, Peter J. J. A.. Formula: C3H5N3This research focused ontriazolopyrimidine preparation selective PDE2A inhibitor; structure triazolopyrimidine inhibition phosphodiesterase selectivity; pharmacokinetics CYP inhibition BBB permeability triazolopyrimidine; free energy perturbation optimization triazolopyrimidine substituent phosphodiesterase inhibitor; crystal structure triazolopyrimidine complex phosphodiesterase 2A. The article conveys some information:

We describe the hit-to-lead exploration of a [1,2,4]triazolo[1,5-a]pyrimidine phosphodiesterase 2A (PDE2A) inhibitor arising from high-throughput screening. X-ray crystallog. enabled structure-guided design, leading to the identification of preferred substructural components. Further rounds of optimization used relative binding free-energy calculations to prioritize different substituents from the large accessible chem. space. The free-energy perturbation (FEP) calculations were performed for 265 putative PDE2A inhibitors, and 100 compounds were synthesized representing a relatively large prospective application providing unexpectedly active mols. with IC50’s from 2340 to 0.89 nM. Lead compound 46 originating from the FEP calculations showed PDE2A inhibition IC50 of 1.3 ± 0.39 nM, ~100-fold selectivity vs. other PDE enzymes, clean cytochrome P 450 profile, in vivo target occupancy, and promise for further lead optimization. After reading the article, we found that the author used 1H-Imidazol-2-amine(cas: 7720-39-0Formula: C3H5N3)

1H-Imidazol-2-amine(cas: 7720-39-0) belongs to anime. Examples of direct uses of amines and their salts are as corrosion inhibitors in boilers and in lubricating oils (morpholine), as antioxidants for rubber and roofing asphalt (diarylamines), as stabilizers for cellulose nitrate explosives (diphenylamine), as protectants against damage from gamma radiation (diarylamines), as developers in photography (aromatic diamines), as flotation agents in mining, as anticling and waterproofing agents for textiles, as fabric softeners, in paper coating, and for solubilizing herbicides.Formula: C3H5N3

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《Construction of coordination polymers based on tetrabromoterephthalic acid and different nitrogen-containing ligands》 was written by Jiao, Shaoshao; Zhang, Yaowen; Liu, Kang; Deng, Liming; Zhang, Xinghao; Wang, Lei. HPLC of Formula: 934-32-7This research focused ontransition metal tetrabromoterephthalate dimethylbipyridine benzoimidazolamine benzoimidazole imidazole complex preparation; crystal structure transition metal tetrabromoterephthalate dimethylbipyridine benzoimidazolamine imidazole complex. The article conveys some information:

Four coordination polymers (CPs) based on H2tbta ligand, namely, [Zn(tbta)(bmbp)]n (1), {[Cd0.5(tbta)(H2O)]n·(Hbia) (H2O)} (2), [Cu1.5(tbta)(OH)(bi)(H2O)]n (3) and [Cd(tbta)(ei)2]n (4) were synthesized and characterized (H2tbta = 2,3,5,6-tetrabromoterephthalic acid, bmbp = 4,4′-dimethyl-2,2′-bipyridine, bia = 1H-benzo[d]imidazol-2-amine, bi = 1H-benzo[d]imidazole, ei = 2-ethyl-1H-imidazole). Single-crystal x-ray diffraction analyses illustrate 1 and 4 exhibit 1-dimensional chains, and compound 1 and 4 are hydrogen-bonded into a 2-dimensional layer to form a 3-dimensional supramol. structure. Compounds 2 and 3 show 2-dimensional layered structures and further expand to 3-dimensional supramol. structures through hydrogen bonds. Structural comparisons indicate that the position of coordination sites and substituent groups plays a crucial role in the control of the final structures. Besides, the photoluminescence properties of compounds 1, 2, 4 and UV-visible spectra of 3 were studied in the solid state at room temperature In the experiment, the researchers used 1H-Benzo[d]imidazol-2-amine(cas: 934-32-7HPLC of Formula: 934-32-7)

1H-Benzo[d]imidazol-2-amine(cas: 934-32-7) can be used in the hydrolysis of a choline carbonate. It was also used in the synthesis of imidazo[1,2-a]benzimidazoles.HPLC of Formula: 934-32-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《Thiolate Bridged Gold(I)-NHC Catalysts: New Approach for Catalyst Design and its Application to Trapping Catalytic Intermediates》 was published in Chemistry – A European Journal in 2019. These research results belong to Visbal, Renso; Herrera, Raquel P.; Gimeno, M. Concepcion. Category: imidazoles-derivatives The article mentions the following:

New dinuclear N-heterocyclic carbene gold complexes [[(NHC)Au]2(μ-SC6F5)][OTf] (5-8; NHC = IPr, SIPr, IMes, SIMes) with bridging thiolate ligands have been designed as catalytic precursors with desired properties such as stability, recyclability and that do not require additives. The dinuclear compounds 5-8 could slowly release the active catalytic species [Au(NHC)]+ and the precursor [Au(SC6F5)(NHC)] in solution, which means that both species would remain stable throughout the catalytic cycle and the pre-catalyst could easily be recovered. The properties exhibited by the complexes have been taken advantage of to gain new insights on the gold-catalyzed hydroalkoxylation of alkynes, with the aim of clarifying all the steps of the catalytic cycle, together with the characterization of intermediates and final products. Isolation and characterization of the pure final spiroketals and the thermodn. intermediate have been achieved for the first time. Moreover, the kinetic intermediate has also been detected for the first time. In the experimental materials used by the author, we found Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2Category: imidazoles-derivatives)

Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2) belongs to imidazoles.Although other azole heterocycles are ubiquitous in a wide range of biologically active natural products, imidazole rings occur predominantly in the natural amino acid histidine. Category: imidazoles-derivatives In addition, imidazole rings are part of unnatural cyclic peptides and are used as ester isosteres in peptidomimetic studies.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem