Tag: 100-200

《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

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

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

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 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

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

Li, Beibei; Guo, Ruixue; Tian, Jie; Wang, Zunyao; Qu, Ruijuan published an article in 2021. The article was titled 《New Findings of Ferrate(VI) Oxidation Mechanism from Its Degradation of Alkene Imidazole Ionic Liquids》, and you may find the article in Environmental Science & Technology.HPLC of Formula: 16681-56-4 The information in the text is summarized as follows:

Chem. reactivity, kinetics, degradation pathways and mechanisms, and ecotoxicity of the oxidation of 1-vinyl-3-ethylimidazolium bromide ([VEIm]Br), the most common alternative to organic solvents, by Fe(VI) (HFeO4-) were studied by lab experiments and theor. calculations Results show that Fe(VI) can efficiently remove VEIm through the dioxygen transfer-hydrolysis mechanism, which has not been reported yet. The reactivity of VEIm toward Fe(VI) mainly depends on the double bonds in the side chain of VEIm. The second-order rate constant for VEIm was 629.45 M-1 s-1 at pH 7.0 and 25°C. Typical water constituents, except for SO32-, Cl-, and Cu2+, had no obvious effects on the oxidation The oxidation products were determined by high-performance liquid chromatog. hybrid quadrupole time-of-flight mass spectrometry, which proves that there were interactions between the oxidation intermediates of the anion and cation parts of [VEIm]Br during the degradation process. The structures of related products and oxidation mechanisms were further rationalized by theor. calculations The ecotoxicity of products from the three oxidation pathways all showed a trend of increase after the initial decrease. We hope that the findings of this work can give researchers some new inspirations on Fe(VI) degradation of other alkene-containing contaminants. After reading the article, we found that the author used 2-Bromo-1H-imidazole(cas: 16681-56-4HPLC of Formula: 16681-56-4)

2-Bromo-1H-imidazole(cas: 16681-56-4) is a member of imidazole. Its exclusive structural characteristics with enviable electron-rich features are favorable for imidazole-based fused heterocycles to bind efficiently with an array of enzymes and receptors in biological systems through various weak interactions like hydrogen bonds, ion-dipole, cation-π, π-π stacking, coordination, Van der Waals forces, hydrophobic effects, etc., and therefore they demonstrate widespread bioactivities. HPLC of Formula: 16681-56-4

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Hermanns, Volker; Scheurer, Maximilian; Kersten, Nils Frederik; Abdellaoui, Chahinez; Wachtveitl, Josef; Dreuw, Andreas; Heckel, Alexander published their research in Chemistry – A European Journal in 2021. The article was titled 《Rethinking Uncaging: A New Antiaromatic Photocage Driven by a Gain of Resonance Energy》.Recommanded Product: 530-62-1 The article contains the following contents:

Photoactivatable compounds for example photoswitches or photolabile protecting groups (PPGs, photocages) for spatiotemporal light control, play a crucial role in different areas of research. For each application, parameters such as the absorption spectrum, solubility in the resp. media and/or photochem. quantum yields for several competing processes need to be optimized. The design of new photochem. tools therefore remains an important task. In this study, we exploited the concept of excited-state-aromaticity, first described by N. Colin Baird in 1971, to investigate a new class of photocages, based on cyclic, ground-state-antiarom. systems. Several thio- and nitrogen-functionalized compounds were synthesized, photochem. characterized and further optimized, supported by quantum chem. calculations After choosing the optimal scaffold, which shows an excellent uncaging quantum yield of 28 %, we achieved a bathochromic shift of over 100 nm, resulting in a robust, well accessible, visible light absorbing, compact new photocage with a clean photoreaction and a high quantum product (ε·Φ) of 893 M-1 cm-1 at 405 nm. The results came from multiple reactions, including the reaction of Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Recommanded Product: 530-62-1)

Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a peptide coupling reagent,it is used in the synthesis of peptides. Reacts readily with carboxylic acids to form acyl imidazoles; subsequent reaction with amines to form amides goes smoothly.Recommanded Product: 530-62-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《Metal-Organic Frameworks Conjugated Lipase with Enhanced Bio-catalytic Activity and Stability》 was written by Zou, Bin; Zhang, Liming; Xia, Jiaojiao; Wang, Pengyun; Yan, Yan; Wang, Xinyi; Adesanya, Idowu Onyinye. Related Products of 530-62-1 And the article was included in Applied Biochemistry and Biotechnology in 2020. The article conveys some information:

Covalent immobilization of lipase onto a solid carrier is an effective way to enhance stability. Immobilization inhibits the activity of lipase due to decreased flexibility of enzyme structure via the covalent bond. In this study, monomer of the metal-organic frameworks (MOFs) material ZIF-8 (2-Me imidazole-4-carboxylic acid) was innovatively used as a chem. modifier of Candida nrugosa lipase (CRL). The CD spectra results show that the CRL mol. was altered by chem. modification and thus its catalytic activity was 1.3 times higher than that of the free CRL. The modified CRL mol. was further immobilized in the “”skeleton”” of ZIF-8 through the monomer while in situ forming the cell skeleton of the MOFs, which prevent the active center from being destroyed. The results show that conjugation of chem. modification and immobilized enzymes ensure that there was no obvious reduction in the activity of CRL after immobilization and the stability of CRL was improved. Especially, the organic solvent stability of the modified immobilization CRL in isopropanol was significantly improved and retained more than 148% of its activity.Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Related Products of 530-62-1) 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.Related Products of 530-62-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Computed Properties of C3H3BrN2In 1993 ,《QSAR’s from similarity matrices. Technique validation and application in the comparison of different similarity evaluation methods》 appeared in Journal of Medicinal Chemistry. The author of the article were Good, Andrew C.; Peterson, Stephen J.; Richards, W. Graham. The article conveys some information:

It has recently been shown that good quant. structure-activity relationships can be obtained through statistical anal. of mol. similarity matrixes. Here we extend the technique to seven addnl. mol. series, previously studied using Comparative Mol. Field Anal. (CoMFA) methodol. The results are used to confirm technique applicability across a wider range of QSAR problems and to compare quant. the ability of various similarity indexes to describe biol. systems. The relative merits of this technique in comparison to CoMFA are discussed. In addition to this study using 2-Bromo-1H-imidazole, there are many other studies that have used 2-Bromo-1H-imidazole(cas: 16681-56-4Computed Properties of C3H3BrN2) was used in this study.

2-Bromo-1H-imidazole(cas: 16681-56-4) is a member of imidazole. Its exclusive structural characteristics with enviable electron-rich features are favorable for imidazole-based fused heterocycles to bind efficiently with an array of enzymes and receptors in biological systems through various weak interactions like hydrogen bonds, ion-dipole, cation-π, π-π stacking, coordination, Van der Waals forces, hydrophobic effects, etc., and therefore they demonstrate widespread bioactivities. Computed Properties of C3H3BrN2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem