Category: 112-63-0

Amouzadeh Tabrizi, Mahmoud; Shamsipur, Mojtaba; Saber, Reza; Sarkar, Saeed; Zolfaghari, Najmeh published the artcile< An ultrasensitive sandwich-type electrochemical immunosensor for the determination of SKBR-3 breast cancer cell using rGO-TPA/FeHCFnano labeled Anti-HCT as a signal tag>, COA of Formula: C19H34O2, the main research area is breast cancer cell graphene oxide.

Here in, a high sensitive sandwich-type electrochem. immunosensor for the determination of SKBR-3 breast cancer cell has been fabricated using of green synthesized reduced graphene oxide as a platform to the immobilization of primary Herceptin antibody (Anti-HCT). The various reduced graphene oxide-tetrasodium 1, 3, 6, 8-pyrenetetrasulfonic acid/metal hexacyanoferrates (rGO-TPA/MHCFnano) nanocomposites included rGO-TPA/FeHCF, rGO-TPA/CoHCF, rGO-TPA/NiHCF and rGO-TPA/CuHCF were used as electrochem. labels of secondary Herceptine antibody. The obtained result showed that the sensitivity of proposed sandwich-type electrochem. immunosensor for the determination of SKBR-3 breast cancer cells (30,000 cells mL-1) using rGO-TPA/FeHCFnano labeled secondary Herceptine antibody was higher than the other rGO-TPA/MHCFnano-labeled secondary Herceptine antibodies. The differential pulse voltammetry (DPV) technique was used for the determination of SKBR-3 breast cancer cell in the concentration range of 500-30,000 cells mL-1 with the limit of detection of 21 cells mL-1. The proposed sandwich-type electrochem. immunosensor exhibited high selectivity, liner range responsibility and good stability.

Sensors and Actuators, B: Chemical published new progress about Biocompatibility. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, COA of Formula: C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zurlinden, Todd J.; Saili, Katerine S.; Rush, Nathaniel; Kothiya, Parth; Judson, Richard S.; Houck, Keith A.; Hunter, E. Sidney; Baker, Nancy C.; Palmer, Jessica A.; Thomas, Russell S.; Knudsen, Thomas B. published the artcile< Profiling the ToxCast library with a pluripotent human (H9) stem cell line-based biomarker assay for developmental toxicity>, Reference of 112-63-0, the main research area is toxcast library pluripotent human stem cell line development toxicity; developmental toxicity; embryonic stem cells; predictive toxicology.

The Stemina devTOX quickPredict platform is a human pluripotent stem cell-based assay that predicts the developmental toxicity potential based on changes in cellular metabolism following chem. exposure. Using this assay, we screened 1065 ToxCast phase I and II chems. in single-concentration or concentration-response for the targeted biomarker (ratio of ornithine to cystine secreted or consumed from the media). The dataset from the Stemina (STM) assay is annotated in the ToxCast portfolio as STM. Major findings from the anal. of ToxCast_STM dataset include (1) 19% of 1065 chems. yielded a prediction of developmental toxicity, (2) assay performance reached 79%-82% accuracy with high specificity (> 84%) but modest sensitivity (< 67%) when compared with in vivo animal models of human prenatal developmental toxicity, (3) sensitivity improved as more stringent weights of evidence requirements were applied to the animal studies, and (4) statistical anal. of the most potent chem. hits on specific biochem. targets in ToxCast revealed pos. and neg. associations with the STM response, providing insights into the mechanistic underpinnings of the targeted endpoint and its biol. domain. The results of this study will be useful to improving our ability to predict in vivo developmental toxicants based on in vitro data and in silico models. Toxicological Sciences published new progress about Analysis (toxicol.). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Murai, Masahito; Nishinaka, Naoki; Takai, Kazuhiko published the artcile< Iridium-Catalyzed Sequential Silylation and Borylation of Heteroarenes Based on Regioselective C-H Bond Activation>, Product Details of C19H34O2, the main research area is iridium catalyzed sequential silylation borylation heteroarene quinoline derivative; boryl silyl quinoline heteroarene derivative preparation; quinoline iridium chloride complex preparation crystal structure; mol structure iridium quinoline chloride complex; C−H bond activation; borylation; heteroarenes; iridium; silylation.

An Ir-catalyzed regioselective sequential silylation and borylation of heteroarenes was developed, which represents a rare example of unsym. intermol. C-H bond difunctionalization through the introduction of two different functionalities during a 1-pot transformation. Although the substrate scope for the dehydrogenative silylation of heteroarenes was limited mainly to electron-rich five-membered rings, the current reaction proceeds with both electron-rich and electron-deficient heteroarenes with the aid of heteroatom-directing C-H bond activation. The regioselectivity of the 2nd borylation was controlled by both steric factors and the electronic effect of the silyl group installed in the 1st step. In combination with the classic cross-coupling reaction, this method provides rapid access to multisubstituted heteroarenes.

Angewandte Chemie, International Edition published new progress about Aromatic hydrocarbons Role: RCT (Reactant), RACT (Reactant or Reagent) (heteroarenes). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Lee, Sun Bu; Park, Jin Hyun; Bae, Han Yong published the artcile< Hydrophobic Amplification Enabled High-Turnover Phosphazene Superbase Catalysis>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is beta arylated sulfido sulfonyl fluoride chemoselective preparation; organic synthesis; organocatalysis; phosphazenes; thia-Michael addition; water chemistry.

Herein a significant “”on-water”” hydrophobic amplification was achieved, enabling a high-turnover catalytic thia-Michael addition to produce unprecedented β-arylated-β-sulfido sulfonyl fluorides. Amounts as low as 100 ppm (0.01 mol %) of the phosphazene superbase were sufficient to successfully catalyzed the reaction with excellent chemo-/site-selectivity and with optimal functional group tolerance. Several β-arylated ethene sulfonyl fluorides were converted into thia-Michael adducts up to >99% yields. The mild conditions, high turnover, neutral pH, and scalability of the sustainable catalytic process benefit the preparation of potential pharmaceuticals (e.g., polyisoprenylated methylated protein Me esterase inhibitors) and organic materials (e. g., electrolyte additives).

ChemSusChem published new progress about Catalysis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ishita, Keisuke; Stefanopoulos, Stavros; Khalil, Ahmed; Cheng, Xiaolin; Tjarks, Werner; Rappleye, Chad A. published the artcile< Synthesis and biological evaluation of aminothiazoles against Histoplasma capsulatum and Cryptococcus neoformans>, Synthetic Route of 112-63-0, the main research area is aminothiazole preparation antifungal Histoplasma Cryptococcus; Aminothiazoles; Antifungal activity; Cryptococcus neoformans; Histoplasma capsulatum; Structure-activity-relationship.

The design and synthesis of a library of forty novel 2-aminoazole analogs as well as their evaluation as antifungal compounds against Histoplasma capsulatum and Cryptococcus neoformans is described. These structures were derived from N-[5-(1-naphthalenylmethyl)-2-thiazolyl]cyclohexanecarboxamide (41F5), a fungistatic agent previously identified through phenotypic screening (Antimicrob Agents Chemother. 2013;57:4349). Modifications to improve potency and water-solubility of 41F5 focused primarily on the 5-naphthalenyl group, the thiazole core, and the methylene linker between these two structural elements. In general, compounds with lipophilic [5+6] bicyclic ring systems, such as the 7-benzothiophenyl- and 4-indanyl groups, at the 5-position were 2-3 times more active against both fungal species as compared to 41F5. Also, introduction of a carbonyl group at the methylene linker of 41F5 resulted in a 2-3-fold increase in potency. These highly active compounds also showed generally low toxicities against murine P388D1 macrophages resulting in selectivity indexes ranging from 63 to >200. Compounds that were highly active against fluconazole-sensitive C. neoformans strains had almost identical activity against fluconazole-resistant variants of this fungus indicating that 14α-demethylase is not their mol. target. Highly active compounds also retained activity against H. capsulatum phagocytosed into P388D1 macrophages.

Bioorganic & Medicinal Chemistry published new progress about Cryptococcus neoformans. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Rumi, Mariacristina; Pond, Stephanie J. K.; Meyer-Friedrichsen, Timo; Zhang, Qing; Bishop, Maximilienne; Zhang, Yadong; Barlow, Stephen; Marder, Seth R.; Perry, Joseph W. published the artcile< Tetrastyrylarene Derivatives: Comparison of One- and Two-Photon Spectroscopic Properties with Distyrylarene Analogues>, Electric Literature of 112-63-0, the main research area is tetrastyrylarene derivative photon spectroscopic distyrylarene analog.

The 1-photon and two-photon absorption properties of cross-shaped chromophores consisting of four donor-substituted styryl branches linked to an aromatic core (benzene or pyrazine) were studied and compared with those of linear analogs with only two branches (donor-π-donor distryrylarenes). The areas of the lowest energy two-photon absorption bands of the compounds with four branches were less than twice those of analogs with two branches. The spectral features observed in these chromophores suggest that electronic coupling between the branches is effective but does not lead to significant enhancement of the two-photon cross section when the branches extend in more than one dimension. In a chromophore with two donor-substituted and two acceptor-substituted branches the two-photon cross section is smaller than in the corresponding linear analogs. The main characteristics of both the 1-photon and two-photon spectra of multibranched compounds discussed here can be explained qual. within the mol. exciton description. In contrast to the case of 1-photon absorptivities, the model shows that pure additivity of the two-photon absorption cross section should not be expected when two monomer units are coupled and that the cross section of the dimer depends on the relative orientation of the constituent units and on the strength and sign of the coupling interaction. In particular, the type of coupling effective in the four-branch chromophores presented here should result in a subadditivity of two-photon cross section of the monomers, in agreement with the exptl. findings.

Journal of Physical Chemistry C published new progress about Additivity (two-photon absorptivity sub-additivity and one-photon absorptivity). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Geenen, Sarah R.; Presser, Lysander; Hoelzel, Torsten; Ganter, Christian; Mueller, Thomas J. J. published the artcile< Electronic Finetuning of 8-Methoxy Psoralens by Palladium-Catalyzed Coupling: Acidochromicity and Solvatochromicity>, Product Details of C19H34O2, the main research area is methoxy psoralen diversity oriented preparation acidochromicity solvatochromicity; UV/Vis spectroscopy; acidochromism; cross-coupling reactions; density functional calculations; donor-acceptor dyes; solvatochromism.

Differently 5-substituted 8-methoxypsoralens can be synthesized by an efficient synthetic route with various cross-coupling methodologies, such as Suzuki, Sonogashira and Heck reaction. Compared to previously synthesized psoralens, thereby promising daylight absorbing compounds as potentially active agents against certain skin diseases can be readily accessed. Extensive investigations of all synthesized psoralen derivatives reveal fluorescence in the solid state as well as several distinctly emissive derivatives in solution Donor-substituted psoralens exhibit remarkable photophys. properties, such as high fluorescence quantum yields and pronounced emission solvatochromicity and acidochromicity, which were scrutinized by Lippert-Mataga and Stern-Volmer plots. The results indicate that the compounds exceed the limit of visible light, a significant factor for potential applications as an active agent. In addition, (TD)DFT calculations were performed to elucidate the underlying electronic structure and to assign exptl. obtained data.

Chemistry – A European Journal published new progress about Absorption spectra. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Choong, Cleo; Foord, J. S.; Griffiths, Jon-Paul; Parker, Emily M.; Baiwen, Luo; Bora, Meghali; Moloney, Mark G. published the artcile< Post-polymerisation modification of surface chemical functionality and its effect on protein binding>, Application of C19H34O2, the main research area is post polymerization surface modification protein binding biomaterial.

Derivatization of polystyrene by carbene insertions followed by diazonium coupling permits the introduction of diverse chem. functionality, providing access to materials with similar bulk properties, but in which surface chem. characteristics are systematically varied across a range of surface polarity, hydration and non-bonding interaction behavior. Protein binding experiments with bovine serum albumin demonstrate that protein adhesion is dependent upon the identity of the surface chem. group, with tert-Bu, hexyl, dimethylamino, amino, and carboxyl modified systems all exhibiting higher levels of binding, while glycol, hydroxyl, and phosphonate give similar or lower levels of binding, relative to the control. This behavior is time dependent, and an approx. trend of protein binding with cheminformatic descriptors %PSA and contact angle was observed

New Journal of Chemistry published new progress about Biocompatible materials (polystyrene-based). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Stroka, Joerg; Anklam, Elke; Joerissen, Urban; Gilbert, John published the artcile< Determination of aflatoxin B1 in baby food (infant formula) by immunoaffinity column cleanup liquid chromatography with postcolumn bromination. Collaborative study>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is aflatoxin immunoaffinity LC bromination baby food.

A collaborative study was conducted to evaluate the effectiveness of an immunoaffinity column cleanup liquid chromatog. (LC) method for determination of aflatoxin B1 in a milk powder based infant formula at a possible future European regulatory limit (0.1 ng/g). The test portion was extracted with methanol-water (8 + 2 [v + v]), filtered, diluted with water, and applied to an immunoaffinity column. The column was washed with water to remove interfering compounds, and the purified aflatoxin B1 was eluted with methanol. The separation and determination of the aflatoxin B1 was performed by reversed-phase LC and detected by fluorescence after postcolumn derivatization (PCD) involving bromination. PCD was achieved with either pyridinium hydrobromide perbromide (PBPB) or an electrochem. (Kobra) cell by addition of bromide to the mobile phase. The baby food (infant formula) test samples, both spiked and naturally contaminated with aflatoxin B1, were sent to 14 laboratories in 13 different European countries. Test portions were spiked at levels of 0.1 and 0.2 ng/g for aflatoxin B1. Recoveries ranged from 101 to 92%. Based on results for spiked test samples (blind pairs at 2 levels) and naturally contaminated test samples (blind pairs at 3 levels), the relative standard deviation for repeatability (RSDr) ranged from 3.5 to 14%. The relative standard deviation for reproducibility (RSDR) ranged from 9 to 23%. Nine participants used PBPB derivatization, and 5 participants used the Kobra cell. There was no evidence of method performance depending on the derivatization method used. The method showed acceptable within- and between-laboratory precision for baby food matrix, as evidenced by HORRAT values, at the target levels of determination for aflatoxin B1.

Journal of AOAC International published new progress about Bromination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Qiankun; Xia, Jin; Wang, Jianping; He, Zhuoyao; Zhao, Wenbin; Qian, Yong; Zheng, Liang; Liu, Rui; Lu, Xingcai published the artcile< Experimental study on ignition and combustion characteristics of biodiesel-butanol blends at different injection pressures>, Synthetic Route of 112-63-0, the main research area is butanol biodiesel ignition combustion injection pressure.

In this work, the biodiesel derived from animal and vegetable oils was investigated, and it was mixed with 10%, 30% and 50% of n-butanol by volume The objective of the investigation is to explore the ignition and combustion characteristics of biodiesel-butanol blends at different injection pressures. The experiment was performed in a constant volume combustion chamber. An injector with a single-hole nozzle was adapted to inject different fuels into the combustion chamber with a static environment. The ignition and combustion processes were captured by a high-speed camera with schlieren imaging technique and natural luminosity imaging technique, resp. A few macroscopic ignition and combustion parameters were obtained and analyzed, such as ignition delay time, ignition distance, flame area and flame luminosity. Results show that the ignition delay times of all tested fuels increase with decreased injection pressure or increased n-butanol proportion. Increasing the injection pressure or n-butanol proportion could increase the ignition distance. The variation law of the flame area is analogus to that of spatially integrated natural luminosity. Increasing the n-butanol proportion or injection pressure decrease the combustion duration and the variation rate of flame area and spatially integrated natural luminosity. The time integrated natural luminosity decreases with increasing the injection pressure or n-butanol proportion. In addition, the flame has a larger fluctuation with adding a large proportion of n-butanol, which is not beneficial for ignition and combustion processes.

Renewable & Sustainable Energy Reviews published new progress about Biodiesel fuel. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics