Esters-buliding-blocks

Yu, Wenbin; Zhao, Feiyang published the artcile< Prediction of critical properties of biodiesel fuels from FAMEs compositions using intelligent genetic algorithm-based back propagation neural network>, SDS of cas: 112-63-0, the main research area is biodiesel fatty acid methyl ester back propagation neural network.

In this study, an intelligent genetic algorithm (GA)-based back propagation neural network (BPNN) model was proposed to predict the properties of biodiesel fuels according to FAMEs compositions The hybrid BPNN-GA model has five inputs (Me palmitate, Me stearate, Me oleate, Me linoleate and Me linolenate) corresponding to the FAMEs compositions and outputs with estimated fuel properties, with the GA assisting on training to find out local min. deviation and updated weighting configurations. It was found that the intelligent learning-training method proposed hybrid BPNN-GA model enabled to map the non-linear relationships between the FAMEs compositions and key properties of biodiesel fuels with fairly good agreement. The predicted value of fuel properties agrees with measured ones with R-square up to 96%, along with lower value (less than 10%) over Root Mean Square Error (RMSE) and Mean Absolute Percentage Error (MAPE) than those of other empirical correlations. In addition, a sensitivity anal. was conducted to in-depth investigate the FAMEs compositions on key properties. It was concluded that saturated FAMEs have pos. impacts on CN, KV and the CFPP, while IV is typically dependent on unsaturated FAMEs. Therefore, it is attainable to formulate new types of alternative fuels based on the required properties on diesel engine applications.

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects published new progress about Biodiesel fuel. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.

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

He, Mengxue; Li, Xia; Holmes, Nathaniel Graham; Li, Ruying; Wang, Jiajun; Yin, Geping; Zuo, Pengjian; Sun, Xueliang published the artcile< Flame-Retardant and Polysulfide-Suppressed Ether-Based Electrolytes for High-Temperature Li-S Batteries>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is flame retardant ether electrolytes lithium sulfur battery; Li−S batteries; ether-based electrolyte; high temperature; inert diluter; nonflammable.

Lithium-sulfur (Li-S) batteries are drawing huge attention as attractive chem. power sources. However, traditional ether-based solvents (DME/DOL) suffer from safety issues at high temperatures and serious parasitic reactions occur between the Li metal anodes and soluble lithium polysulfides (LiPSs). Herein, we propose a polysulfide-suppressed and flame-retardant electrolyte operated at high temperatures by introducing an inert diluent 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl (TTE) into the high-concentration electrolyte (HCE). Li dendrites are also efficiently suppressed by the formed LiF-rich protective layer. Furthermore, the shuttle effect is mitigated by the decreased solubility of LiPSs. At 60°C, Li-S batteries using this nonflammable ether-based electrolyte exhibit a high capacity of 666 mAh g-1 over 100 cycles at a current rate of 0.2C, showing the greatly improved high-temperature performance compared to batteries with traditional ether-based electrolytes. The improved electrochem. performance across a range of temperatures and the enhanced safety suggest that the electrolyte has a great practical prospect for safe Li-S batteries.

ACS Applied Materials & Interfaces published new progress about Batteries. 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

Schwenninger, R.; Ongania, K. H. published the artcile< Synthesis of benzanellated carbacephams. II>, Product Details of C19H34O2, the main research area is carbacepham benzo; benzocarbacepham.

The treatment of 2-(oxo-1-azetidinyl)benzyltriphenylphosphonium salts with base leads to carbacephems I [R = H, OMe, OCH2Ph; R1 = H, OPh] which can be reduced to the title compounds The reaction of I with acids does not result in 3-oxocephams by cleavage of the enol ether function. Instead, the 3-alkoxyquinolines have been obtained.

Monatshefte fuer Chemie published new progress about β-Lactams Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Peng, Lichong; Zhang, Xiuling; Sun, Yaxin; Li, Congju published the artcile< Electrospun ZIF-derived cavity porous carbon nanofibers as a freestanding cathode for lithium-oxygen batteries with ultralow overpotential>, Computed Properties of 112-63-0, the main research area is electrospun ZIF derived carbon nanofiber cathode lithium oxygen battery.

Construction of an efficient electrocatalyst for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with low overpotential and cycling stability for lithium-oxygen batteries still remains a puzzling challenge. Herein, we propose a scalable approach to integrate ZIF derivatives into cavity porous carbon nanofibers (CPCNFs) via an electrospinning technique and thermal treatment (Zn/CoNC@CPCNFs). The ultralong interconnected nanofiber matrix is beneficial, and the developed Zn/CoNC@CPCNFs catalyst with excellent flexibility can be utilized as a free-standing electrode based on an air-cathode. Moreover, this confinement strategy ensures the dispersion of Co-based species and abundant porosity structure, which contributes to the transport and adsorption of oxygen and exposes more Co-N coordination catalytic centers, as a result of a drastically ultralow voltage gap. Consequently, a cell based on a Zn/CoNC@CPCNF electrode presents remarkably decreased charge-discharge polarization (0.36 V), a high initial discharge capacity with an ultra-low overpotential of 0.59 V, and long-term cyclability with a cut-off capacity of 0.2 mA h cm-2 at 0.02 mA cm-2. We hope that our protocol will offer instruction for the design and application of oxygen electrocatalysts for energy conversion and storage.

Nanoscale published new progress about Agglomeration. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

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

Hao, Bao-Yu; Liu, Jin-Qiang; Zhang, Wei-Han; Chen, Xin-Zhi published the artcile< Chiral pool synthesis of N-Cbz-cis-(3R,4R)-3-methylamino-4-methylpiperidine from L-malic acid>, Reference of 617-55-0, the main research area is methylaminomethylpiperidine chiral pool preparation malic acid.

A new synthetic route to N-Cbz-cis-(3R,4R)-3-methylamino-4-methylpiperidine, key intermediate for CP-690,550, was disclosed with L-malic acid as the chiral pool starting material. The title compound was obtained in 16 steps with a total yield of 26% and >98% ee.

Bulletin of the Korean Chemical Society published new progress about Diastereoselective synthesis. 617-55-0 belongs to class esters-buliding-blocks, and the molecular formula is C6H10O5, Reference of 617-55-0.

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

Zhou, Feng; Zeng, Xing-Ping; Wang, Chao; Zhao, Xiao-Li; Zhou, Jian published the artcile< Organocatalytic asymmetric synthesis of 3,3-disubstituted oxindoles featuring two heteroatoms at the C3 position>, Quality Control of 112-63-0, the main research area is thiooxindole alkoxyoxindole organocatalytic stereoselective amination butylazodicarboxylate.

The authors report the first organocatalytic asym. synthesis of 3,3-disubstituted oxindoles featuring two heteroatoms at the C3 position. Importantly, 3-thiooxindoles and 3-alkoxyoxindoles are demonstrated to be reactive nucleophiles for the development of catalytic asym. reactions for the first time.

Chemical Communications (Cambridge, United Kingdom) published new progress about Amination catalysts (stereoselective). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

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

Zuo, Xiang; Cheng, Cang; Zhang, Yanghui published the artcile< Palladium-catalyzed cross-coupling of 2-iodobiphenyls with ortho-chloroacetophenones through dual C-H arylation for the construction of tribenzo[a,c,f]cyclooctanones>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is tribenzocyclooctanone preparation; iodobiphenyl ortho chloroacetophenone cross coupling reaction palladium arylation.

The palladium-catalyzed cross-coupling reaction of 2-iodobiphenyls with ortho-chloroacetophenones has been developed. The reaction involves C-H activation of 2-iodobiphenyls and yields eight-membered carbocycles by forming two C-C bonds. The protocol provides a straightforward method for the construction of tribenzo[a,c,f]cyclooctanones with simple substrates and allows easy access to its various derivatives

Organic Chemistry Frontiers published new progress about Acetophenones Role: RCT (Reactant), RACT (Reactant or Reagent) (ortho-chloro-). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

Zhang, Yizhe; Zhang, Shujie; Luo, Xin; Zhao, Han; Xiang, Xiaoxing published the artcile< Paeoniflorin mitigates PBC-induced liver fibrosis by repressing NLRP3 formation.>, Application In Synthesis of 112-63-0, the main research area is .

PURPOSE: To delve into the influence of paeoniflorin (PA) on abating primary biliary cholangitis (PBC)-induced liver fibrosis and its causative role. METHODS: Our team allocated the mice to control group, PA group, PBC group and PBC+PA group. We recorded the weight change of mice in each group. We used Masson staining for determining liver fibrosis, immunofluorescence staining for measuring tumor necrosis factor-α (TNF-α) expression, quantitative real-time polymerase chain reaction (qRT-PCR) for assaying related gene expression, as well as Western blot for testing related protein expression. RESULTS: The weight of PBC model mice declined. Twenty-four weeks after modeling, the positive rate of anti-mitochondrial antibody-M2 (AMA-M2) in PBC mice reached 100%. Alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST), hydroxyproline (HYP), laminin (LN), procollagen type III (PC III), and malondialdehyde (MDA) contents saliently waxed (p<0.01). Meanwhile, superoxide dismutase (SOD) and glutathione peroxidase (GSH-px) activity patently waned (p<0.01). Liver fibrosis levels were flagrantly higher (p<0.01), and TNF-α, NOD-like receptor protein 3 (NLRP3), caspase-1, interleukin-18 (IL-18), and interleukin-1β (IL-1β) protein or gene expression were manifestly up-regulated (p<0.01). PA could restore the weight of PBC mice, strikingly restrain the positive expression of AMA-M2, and down-regulate serum ALP, ALT, AST, HYP, LN, PC III, MDA in PBC mice (p<0.01). PA could also significantly up-regulate SOD and GSH-px levels (p<0.01), down-regulate IL-1β, IL-18, caspase-1, NLRP3, and TNF-α protein or gene expression in PBC mice (p<0.01) and inhibit liver fibrosis levels (p<0.01). CONCLUSIONS: PA can reduce PBC-induced liver fibrosis in mice and may function by curbing the formation of NLRP3. Acta cirurgica brasileira published new progress about 112-63-0. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application In Synthesis of 112-63-0.

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

Liu, Ruiying; Zheng, Ying; Han, Tao; Lan, Jie; He, Laixi; Shi, Jianyou published the artcile< Angiogenic Actions of Paeoniflorin on Endothelial Progenitor Cells and in Ischemic Stroke Rat Model>, Related Products of 112-63-0, the main research area is paeoniflorin neuroprotectant VEGF endothelial cell angiogenesis ischemic stroke; Angiogenesis; Biological Features; Endothelial Progenitor Cells; Ischemic Stroke; Paeoniflorin; Vascular Regeneration.

Ischemic stroke is one of the major diseases with high morbidity, mortality, and disability rate all over the world. Chinese herb-derived active components would provide valuable candidate compounds for ischemic stroke therapy. Paeoniflorin (PF) is an active ingredient from Paeoniae Radix which possesses neurovascular effect after ischemia. However, so far, few studies are reported on the efficacy and mechanism of PF from angiogenesis aspects. Results from our in vitro studies showed that the ability for proliferation, migration, and tube formation in bone marrow-derived endothelial progenitor cells (BM-EPCs) was promoted by coculturing with PF (100μM). Furthermore, to investigate the angiogenic effects of PF in vivo, we constructed an ischemic stroke model in rats and found that PF could reduce cerebral infarction, alleviate pathol. injury, and increase the secretion of pro-angiogenic factors and cerebral vascular d. after intraperitonially administration of 40 mg · kg-1 · day-1 for 14 days. Up-regulating the expression of VEGF/VEGF-R2 might be the mechanism of PF’s angiogenic action. In conclusion, the present study provides evidence that PF is an active monomer of Traditional Chinese Medicine which shows angiogenic actions on endothelial progenitor cells and in ischemic stroke rat model.

American Journal of Chinese Medicine published new progress about Angiogenesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

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

Elajaili, Hanan; Hernandez-Lagunas, Laura; Harris, Peter; Sparagna, Genevieve C.; Jonscher, Raleigh; Ohlstrom, Denis; Sucharov, Carmen C.; Bowler, Russell P.; Suliman, Hagir; Fritz, Kristofer S.; Roede, James R.; Nozik, Eva S. published the artcile< Extracellular superoxide dismutase (EC-SOD) R213G variant reduces mitochondrial ROS and preserves mitochondrial function in bleomycin-induced lung injury>, Application of C19H34O2, the main research area is SOD2 polymorphism ROS glutathione mitochondrial respiration lung injury.

Extracellular superoxide dismutase (EC-SOD) is highly expressed in the lung and vasculature. A common human single nucleotide polymorphism (SNP) in the matrix binding region of EC-SOD leads to a single amino acid substitution, R213G, and alters EC-SOD tissue binding affinity. The change in tissue binding affinity redistributes EC-SOD from tissue to extracellular fluids. Mice (R213G mice) expressing a knock-in of this EC-SOD SNP exhibit elevated plasma and reduced lung EC-SOD content and activity and are protected against bleomycin-induced lung injury and inflammation. It is unknown how the redistribution of EC-SOD alters site-specific redox-regulated mols. relevant for protection. In this study, we tested the hypothesis that the change in the local EC-SOD content would influence not only the extracellular redox microenvironment where EC-SOD is localized but also protect the intracellular redox status of the lung. Mice were treated with bleomycin and harvested 7 days post-treatment. Superoxide levels, measured by ESR (EPR), were lower in plasma and Bronchoalveolar lavage fluid (BALF) cells in R213G mice compared to wild-type (WT) mice, while lung cellular superoxide levels in R213G mice were not elevated post-bleomycin compared to WT mice despite low lung EC-SOD levels. Lung glutathione redox potential (EhGSSG), determined by HPLC and fluorescence, was more oxidized in WT compared to R213G mice. In R213G mice, lung mitochondrial oxidative stress was reduced shown by mitochondrial superoxide level measured by EPR in lung and the resistance to bleomycin-induced cardiolipin oxidation Bleomycin treatment suppressed mitochondrial respiration in WT mice. Mitochondrial function was impaired at baseline in R213G mice but did not exhibit further suppression in respiration post-bleomycin. Collectively, the results indicate that R213G variant preserves intracellular redox state and protects mitochondrial function in the setting of bleomycin-induced inflammation.

Advances in Redox Research published new progress about Animal gene Role: BSU (Biological Study, Unclassified), PRP (Properties), BIOL (Biological Study) (SOD1). 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