Category: 16961-25-4

HPLC of Formula: 16961-25-4. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Hydrogen tetrachloroaurate(III) trihydrate, is researched, Molecular AuCl4H7O3, CAS is 16961-25-4, about Engineered targeted hyaluronic acid-glutathione-stabilized gold nanoclusters/graphene oxide-5-fluorouracil as a smart theranostic platform for stimulus-controlled fluorescence imaging-assisted synergetic chemo/phototherapy. Author is Yang, Ying; Wang, Shuxin; Wang, Chen; Tian, Chen; Shen, Yuhua; Zhu, Manzhou.

A theranostic platform with integrated diagnostic and therapeutic functions as well as specific targeted and controlled combination therapy to enhance treatment efficacy is of great importance for a wide range of biomedical applications. Here, we first attempted to develop biocompatible hyaluronic acid (HA)-glutathione (GSH) conjugate stabilized gold nanoclusters (GNCs) combined with graphene oxide (GO), accompanied by loading 5-fluorouracil (5FU), as a novel theranostic platform (HG-GNCs/GO-5FU, HG refers to HA-GSH). Multifunctional HG-GNCs possessed excellent fluorescence, photosensitivity and specific targeting ability to the cancer cells while their fluorescence and singlet oxygen generation could be strongly inhibited by GO and then effectively restored by lysosomal hyaluronidase in tumor cells. The sustained and complete release of 5FU from HG-GNCs/GO could also be stimulated successively by enzymic degradation of HA and light-induced heat effect of GO under laser irradiation so that turn-on cell imaging-assisted synergistic therapeutic strategies associated with triple enzyme/light-controlled chemo/photothermal/photodynamic therapy could be achieved at the same time, reducing greatly the side effects of materials to normal cells. Our study presents a novel strategy to combine targeting and bioimaging with triple therapies to enhance the antitumor effect.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Electric Literature of AuCl4H7O3. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Hydrogen tetrachloroaurate(III) trihydrate, is researched, Molecular AuCl4H7O3, CAS is 16961-25-4, about Controllable preparation of sea urchin-like Au NPs as a SERS substrate for highly sensitive detection of the toxic atropine. Author is Qin, Yazhou; Wu, Yuanzhao; Wang, Binjie; Wang, Jiye; Zong, Xingsen; Yao, Weixuan.

Branched Au nanoparticles (Au NPs) can significantly enhance the Raman signal of trace chem. substances, and have attracted the interest of researchers. However, there are still challenges to accurately prepare the morphol. of branched Au NPs. In this work, we have successfully prepared sea urchin-like Au NPs and Au nanowires by using the seed-mediate growth method, with cetyltrimethylammonium bromide (CTAB) and glutathione as ligands, and ascorbic acid as a reducing agent. Using Au NPs with a tetrahexahedron (THH) morphol. as seeds, and by simply changing the concentration of glutathione, we explored the growth process of sea urchin-like Au and Au nanowires. At low concentrations of glutathione, Au NPs will preferentially grow along the edges and corners of the THH Au seed, forming a core/satellite structure. As the concentration of glutathione increases, Au NPs will grow along the direction of glutathione, forming sea urchin-like Au NPs. To further increase the concentration of glutathione, we will prepare Au nanowires. In addition, we use the prepared Au NPs as a substrate material for surface-enhanced Raman (SERS) high-sensitivity detection. By using 4-aminothiophenol (4-ATP) as the test mol., we evaluated the SERS effect of the prepared Au NPs with different morphologies. The results showed that sea urchin-like Au NPs have the best enhancement effect. The lowest concentrations of Rhodamine 6G and 4-ATP were 10-10 M and 10-12 M, resp., using sea urchin Au NPs as the base material. Furthermore, we conducted a highly sensitive SERS detection of the poison atropine monohydrate, and the lowest detected concentration was 10-10 M.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Hydrogen tetrachloroaurate(III) trihydrate(SMILESS: Cl[Au-](Cl)(Cl)Cl.[H]O[H].[H]O[H].[H]O[H].[H+],cas:16961-25-4) is researched.Recommanded Product: 58656-04-5. The article 《Tough, Stretchable, Compressive Double Network Hydrogel Using Natural Glycyrrhizic Acid Tailored Low-Molecular-Weight Gelator Strategy: In Situ Spontaneous Formation of Au Nanoparticles To Generate a Continuous Flow Reactor》 in relation to this compound, is published in ACS Applied Materials & Interfaces. Let’s take a look at the latest research on this compound (cas:16961-25-4).

Traditional solid supports of metal nanoparticles (MNPs) often suffer from the poor mech. performance, the low recycling efficiency, and the mass loss in the regeneration process. To overcome this limit, in this work, we reported a natural triterpenoid-tailored low-mol.-weight gelator (LMWG) strategy to fabricate double network (DN) hydrogels with excellent mech. properties for supporting MNPs. In this strategy, the supramol. fibrillar structure of glycyrrhizic acid (GL) and the cross-linked polyacrylamide (PAAm) were used as the first phys. network and the second chem. network, resp. The resulting GL/PAAm DN gels possessed tough, stretchable, and compressive properties, as well as high fatigue resistance. In addition, the ice-templating technique has been used to recast the DN gel through the anisotropical growth of ice crystals for increasing the porosity and surface area. On account of the reductibility of the diglucuronic moiety of GL, gold nanoparticles (AuNPs) were in situ spontaneously reduced from Au(III) ions without external reducing reagents and anchored on the pore surface of Recast-GL/PAAm DN gel. This AuNP-anchored Recast-GL/PAAm DN gel can be used as a continuous flow reactor to catalyze the reduction of 4-nitrophenol to 4-aminophenol with high catalytic activity, good recyclability, and long-term stability. Our work provided an effective strategy to generate promising supports of MNPs with highly mech. properties and excellent catalytic efficiencies.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

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 Laser photo-thermal therapy of epithelial carcinoma using pterin-6-carboxylic acid conjugated gold nanoparticles, published in 2021-12-31, which mentions a compound: 16961-25-4, Name is Hydrogen tetrachloroaurate(III) trihydrate, Molecular AuCl4H7O3, SDS of cas: 16961-25-4.

Gold nanoparticles functionalized with folic acid toward the internalization into cancer cells have received considerable attention recently. Folic acid is recognized by folate receptors, which are overexpressed in several cancer cells; it is limited in normal cells. In this work, pterin-6-carboxylic acid is proposed as an agonist of folic acid since the pterin-6-carboxylic acid structure has a pterin moiety, the same as folic acid that is recognized by the folate receptor. Here a simple photochem. synthesis of gold nanoparticles functionalized with pterin-6-carboxylic acid is studied. These conjugates were used to cause photothermal damage of HeLa cells irradiating with a diode laser of 808 nm. Pterin-6-carboxylic acid-conjugated gold nanoparticles caused the death of the cell after near-IR irradiation, dose-dependently. These results indicate a possible internalization of AuNPs via folate receptor-mediated endocytosis due to the recognition or interaction between the folate receptors of HeLa cells and pterin, P6CA.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Mahmoud, Nouf N.; Abu-Dahab, Rana; Hamadneh, Lama A.; Abuarqoub, Duaa; Jafar, Hanan; Khalil, Enam A. published an article about the compound: Hydrogen tetrachloroaurate(III) trihydrate( cas:16961-25-4,SMILESS:Cl[Au-](Cl)(Cl)Cl.[H]O[H].[H]O[H].[H]O[H].[H+] ).Product Details of 16961-25-4. 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:16961-25-4) through the article.

Gold nanorods (GNRs) have gained pronounced recognition in the diagnosis and treatment of cancers driven by their distinctive properties. Herein, a gold-based nanosystem was prepared by utilizing a phospholipid moiety linked to thiolated polyethylene glycol, 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-PEG-SH, as a surface decorating agent. The synthesized phospholipid-PEG-GNRs displayed good colloidal stability upon exposure to the tissue culture medium. Cytotoxicity of phospholipid-PEG-GNRs was investigated toward MCF-7 and T47D breast cancer cells using sulforhodamine B test. The results revealed that phospholipid-PEG-GNRs demonstrated high cytotoxicity to MCF-7 cells compared to T47D cells, and minimal cytotoxicity to human dermal fibroblasts. The cellular uptake studies performed by imaging and quant. anal. demonstrated massive internalization of phospholipid-coated GNRs into MCF-7 cells in comparison to T47D cells. The cellular death modality of cancer cells after treatment with phospholipid-PEG-GNRs was evaluated using mitochondrial membrane potential assay (JC-1 dye), gene expression anal., and flow cytometry study. The overall results suggest that phospholipid-modified GNRs enhanced mainly the cellular apoptotic events in MCF-7 cells in addition to necrosis, whereas cellular necrosis and suppression of cellular invasion contributed to the cellular death modality in the T47D cell line upon treatment with phospholipid-PEG-GNRs. The phospholipid-coated GNRs interact in a different manner with breast cancer cell lines and could be considered for breast cancer treatment.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Safety of Hydrogen tetrachloroaurate(III) trihydrate. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Hydrogen tetrachloroaurate(III) trihydrate, is researched, Molecular AuCl4H7O3, CAS is 16961-25-4, about Gold quantum dots impair the tumorigenic potential of glioma stem-like cells via β-catenin downregulation in vitro. Author is Wahab, Rizwan; Kaushik, Neha; Khan, Farheen; Kaushik, Nagendra Kumar; Lee, Su-Jae; Choi, Eun Ha; Al-Khedhairy, Abdulaziz A..

Over the past several decades, the incidence of solid cancers has rapidly increased worldwide. Successful removal of tumor-initiating cells within tumors is essential in the field of cancer therapeutics to improve patient disease-free survival rates. The biocompatible multivarient-sized gold nanoparticles (MVS-GNPs) from quantum dots (QDs, <10 nm) to nanosized (up to 50 nm) particles have vast applications in various biomedical areas including cancer treatment. The role of MVS-GNPs for inhibition of tumorigenic potential and stemness of glioma was investigated in this study. Herein, MVS-GNPs synthesized and characterized by means of X-ray diffraction pattern (XRD) and transmission electron microscopy (TEM) techniques. Afterwards, interaction of these GNPs with glioma stem-cell like cells along with cancer cells were evaluated by MTT, cell motility, self-renewal assays and biostatistics was also applied. Among these GNPs, G-QDs contributed to reduce metastatic events and spheroid cell growth, potentially blocking the self-renewal ability of these cells. This study also uncovers the previously unknown role of the inhibition of CTNNB1 signaling as a novel candidate to decrease the tumorigenesis of glioma spheroids and subsequent spheroid growth. The accurate and precise biostatistics results were obtained at quantify level. In summary, G-QDs may exhibit possible contribution on suppressing the growth of tumor-initiating cells. These data reveal a unique therapeutic approach for the elimination of residual resistant stem-like cells during cancer treatment. In addition to the literature in the link below, there is a lot of literature about this compound(Hydrogen tetrachloroaurate(III) trihydrate)Safety of Hydrogen tetrachloroaurate(III) trihydrate, illustrating the importance and wide applicability of this compound(16961-25-4).

Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Safety of Hydrogen tetrachloroaurate(III) trihydrate. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Hydrogen tetrachloroaurate(III) trihydrate, is researched, Molecular AuCl4H7O3, CAS is 16961-25-4, about Size-Controlled Formation of Polymer Janus Discs. Author is Qiang, Xiaolian; Franzka, Steffen; Quintieri, Giada; Dai, Xuezhi; Wong, Chin Ken; Groschel, Andre H..

A straightforward method is presented for the preparation of nano- to micrometer-sized Janus disks with controlled shape, size, and aspect ratio. The method relies on cross-linkable ABC triblock terpolymers and involves first the preparation of prolate ellipsoidal microparticles by combining Shirasu porous glass (SPG) membrane emulsification with evaporation-induced confinement assembly (EICA). By varying the pore diameter of the SPG membrane, we produce Janus disks with controlled size distributions centered around hundreds of nanometers to several microns. We further transferred the disks to water by mild sulfonation of PS to polystyrene sulfonic acid (PSS) and verified the Janus character by subsequent labeling with cationic nanoparticles. Finally, we show that the sulfonated Janus disks are amphiphilic and can be used as efficient colloidal stabilizers for oil-in-water (O/W) emulsions.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Hydrogen tetrachloroaurate(III) trihydrate, is researched, Molecular AuCl4H7O3, CAS is 16961-25-4, about Strong interaction between Au nanoparticles and porous polyurethane sponge enables efficient environmental catalysis with high reusability.Related Products of 16961-25-4.

A novel and recoverable platform of polyurethane (PU) sponge-supported Au nanoparticle catalyst was obtained by a water-based in-situ preparation process. The structure, chem., and morphol. properties of this platform were characterized by XRD, TGA, SEM, FT-IR, and XPS. The Au/PU sponge platform exhibited excellent catalytic performances in catalytic reductions of p-nitrophenol and o-nitroaniline at room temperature, and both catalytic reactions could be completed within 4.5 and 1.5 min, resp. Furthermore, the strong interaction between Au nanoparticles and the PU sponge enabled the catalyst system to maintain a high catalytic efficiency after 5 recycling times, since the PU sponge reduced the trend of leaching and aggregation of Au nanoparticles. The unique nature of Au nanoparticles and the porous PU sponge along with their strong interaction resulted in a highly efficient, recoverable, and cost-effective multifunctional catalyst. The AuNP/Sponge nanocatalyst platform has great potential for wide environmental and other catalytic applications.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Related Products of 16961-25-4. 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: Hydrogen tetrachloroaurate(III) trihydrate, is researched, Molecular AuCl4H7O3, CAS is 16961-25-4, about Tuning stable noble metal nanoparticles dispersions to moderate their interaction with model membranes. Author is William, Nicola; Bamidoro, Faith; Beales, Paul A.; Drummond-Brydson, Rik; Hondow, Nicole; Key, Sarah; Kulak, Alexander; Walsh, Aidan Charles; Winter, Sophia; Nelson, Laurence Andrew.

The properties of stable gold (Au) nanoparticle dispersions can be tuned to alter their activity towards biomembrane models. Au nanoparticle coating techniques together with rapid electrochem. screens of a phospholipid layer on fabricated mercury (Hg) on platinum (Pt) electrode have been used to moderate the phospholipid layer activity of Au nanoparticle dispersions. Screening results for Au nanoparticle dispersions were intercalibrated with phospholipid large unilamellar vesicle (LUV) interactions using a carboxyfluorescein (CF) leakage assay. All nanoparticle dispersions were characterised for size, by dynamic light scattering (DLS) and transmission electron microscopy (TEM). Com. and high quality home synthesized Au nanoparticle dispersions are phospholipid monolayer active whereas Ag nanoparticle dispersions are not. If Au nanoparticles are coated with a thin layer of Ag then the particle/lipid interaction is suppressed. The electrochem. assays of the lipid layer activity of Au nanoparticle dispersions align with LUV leakage assays of the same. Au nanoparticles of decreasing size and increasing dispersion concentration showed a stronger phospholipid monolayer/bilayer interaction. Treating Au nanoparticles with cell culture medium and incubation of Au nanoparticle dispersions in phosphate buffered saline (PBS) solutions removes their phospholipid layer interaction.

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Reference:
Imidazole – Wikipedia,
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Jin, Biao; Wang, Yanming; Jin, Chuanhong; De Yoreo, James J.; Tang, Ruikang published an article about the compound: Hydrogen tetrachloroaurate(III) trihydrate( cas:16961-25-4,SMILESS:Cl[Au-](Cl)(Cl)Cl.[H]O[H].[H]O[H].[H]O[H].[H+] ).Synthetic Route of AuCl4H7O3. 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:16961-25-4) through the article.

Understanding the formation mechanism of nanocrystals in solution is fundamental to the development of materials science. For a metal nanocrystal, the cluster-mediated formation mechanism is still poorly understood. In particular, identifying what types of clusters are dominant and how they evolve into a nanocrystal in the early nucleation stage remains a great challenge. Here, using liquid-cell transmission electron microscopy, we directly observe the formation of ultrasmall Au clusters (∼ 0.84 nm) in the presence of PAA-Na. These clusters, which correspond to the size of the Au13 cluster, coalesce to form nanocrystals. Our mol. dynamics simulations suggest that Au13 in an aqueous environment has greater stability when compared to other cluster sizes and provide atomistic details of growth by cluster coalescence. Collectively, our demonstration of Au13 as the dominant species with an elaboration of their coalescence kinetics sheds light on nonclassical nanocrystal formation mechanisms and offers useful guidelines for designing innovative pathways for the synthesis of nanomaterials.

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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem