Category: esters-buliding-blocks

Liu, Dezhong; Li, Zhi; Li, Xiang; Chen, Xin; Li, Zhen; Yuan, Lixia; Huang, Yunhui published the artcile< Stable Room-Temperature Sodium-Sulfur Batteries in Ether-Based Electrolytes Enabled by the Fluoroethylene Carbonate Additive>, Synthetic Route of 112-63-0, the main research area is stable room temperature sodium sulfur battery ether electrolytes enabled; cathode−electrolyte interphase; electrolyte additive; room-temperature sodium−sulfur batteries; sulfurized polyacrylonitrile cathode; “solid−solid” conversion.

Because of its high energy d. and low cost, the room-temperature sodium-sulfur (RT Na-S) battery is a promising candidate to power the next-generation large-scale energy storage system. However, its practical utilization is hampered by the short life span owing to the severe shuttle effect, which originates from the “”solid-liquid-solid”” reaction mechanism of the sulfur cathode. In this work, fluoroethylene carbonate is proposed as an additive, and tetraethylene glycol di-Me ether is used as the base solvent. For the sulfurized polyacrylonitrile cathode, a robust F-containing cathode-electrolyte interphase (CEI) forms on the cathode surface during the initial discharging. The CEI prohibits the dissolution and diffusion of the soluble intermediate products, realizing a “”solid-solid”” reaction process. The RT Na-S cell exhibits a stable cycling performance: a capacity of 587 mA h g-1 is retained after 200 cycles at 0.2 A g-1 with nearly 100% Coulombic efficiency.

ACS Applied Materials & Interfaces published new progress about Battery cathodes. 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

Ayoola, A. A.; Alagbe, E. E.; Agboola, O.; Ayeni, O. A.; Adeyemi, G. A.; Nnabuko, D.; Niakinwa, T. A. published the artcile< A simplified design for biodiesel production>, Product Details of C19H34O2, the main research area is biodiesel design esterification production.

In this research work, a simple design for the production of 1kg biodiesel involving two stage esterification-transesterification process, with the use of waste soybean oil (WSO) and NaOH catalyst was considered. CHEMCAD 7.1.2 software was used for the design operation which revealed that four (4) pumps, four (4) heaters, two (2) mixers, one (1) drying equipment and two (2) reactors were involved. Also, the production process design revealed that 0.05 13kg/h of methanol and 0.1 800kg/h of 0.1M H2SO4 were required during the esterification process. While 0.6921kg/h of methanol, 0.9870kg/h of WSO as well as 0.1934kg/h of NaOH catalyst were needed for the transesterification process. The simplicity of the design and high purity level of the biodiesel produced adjudged the design operation good.

IOP Conference Series: Materials Science and Engineering published new progress about Biodiesel fuel. 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

Rotondo, Rossella; Oliva, Maria Antonietta; Arcella, Antonietta published the artcile< The Sesquiterpene Lactone Cynaropicrin Manifests Strong Cytotoxicity in Glioblastoma Cells U-87 MG by Induction of Oxidative Stress>, SDS of cas: 112-63-0, the main research area is Lactone Cynaropicrin Sesquiterpene Glioblastoma Cell Cytotoxicity Oxidative Stress; ROS; apoptosis; autophagy; cynaropicrin; oxidative stress; sesquiterpene lactone.

Cynaropicrin has shown a wide range of pharmacol. properties, such as antitumor action. Here, we showed the inhibitory effect of Cyn on human glioblastoma cell U-87 MG growth. According to the IC50 values, Cyn 4, 8 and 10 μM displayed a significant cytotoxicity, as confirmed by the cell count and MTT assay. Furthermore, Cyn completely abolished the ability of U-87 MG to form colonies and induced drastic morphol. changes. Interestingly, pretreatment with ROS scavenger N-acetylcysteine 3 mM reversed the cytotoxicity induced by Cyn 25 μM and preserved the cells by morphol. changes. Therefore, oxidative stress induction was evaluated at low 8- and high 25-μM concentrations in U-87 MG, as demonstrated by the quant. and qual. anal. of ROS. A prolonged increase in ROS generation under Cyn 25 μM exposure was followed by the loss of the mitochondrial membrane potential in treated U-87 MG cells. An acute treatment with Cyn 25 μM induced Cyt c release, as revealed by immunofluorescence staining and the activation of cell death pathways, apoptosis and autophagy. On the other hand, chronic treatment with Cyn 8 μM induced senescence, as revealed by the increase in SA-β-Gal activity. Moreover, at this concentration, Cyn led to ERK dephosphorylation accompanied by a relevant reduction of the NF-κB p65 subunit. Finally, the combined effect of TMZ and Cyn resulted in synergistic cytotoxicity, as evaluated by the Bliss additivity model. The strong cytotoxicity of Cyn was also confirmed on IDH1 mutant U-87 MG cells and patient-derived IDH wild-type glioblastoma cell lines NULU and ZAR. In conclusion, given the high toxicity at minimal concentrations, the high inhibition of tumor cell growth and synergy with the standard drug for glioblastoma TMZ, Cyn could be proposed as a potential adjuvant for the treatment of glioblastoma.

Biomedicines published new progress about Apoptosis. 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

Bartels, Bjoern; Cueni, Philipp; Muri, Dieter; Koerner, Matthias published the artcile< Development of a safe and scalable route towards a tau PET tracer precursor>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is diazacarbazole scalable preparation tau PET tracer precursor; Buchwald-Hartwig amination; CH activation; Diazacarbazole; Direct arylation; PET tracer; Stille coupling; Suzuki-Miyaura cross-coupling; Tau.

A scalable 5-step synthesis of the diazacarbazole derivative I used as tau PET tracer precursor is reported. Key features of this synthesis include a Buchwald-Hartwig amination, a Pd catalyzed C-H activation and a Suzuki-Miyaura cross-coupling.

Bioorganic & Medicinal Chemistry published new progress about Alzheimer disease. 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

Leivers, Anna L.; Tallant, Matthew; Shotwell, J. Brad; Dickerson, Scott; Leivers, Martin R.; McDonald, Octerloney B.; Gobel, Jeff; Creech, Katrina L.; Strum, Susan L.; Mathis, Amanda; Rogers, Sabrinia; Moore, Chris B.; Botyanszki, Janos published the artcile< Discovery of Selective Small Molecule Type III Phosphatidylinositol 4-Kinase Alpha (PI4KIIIα) Inhibitors as Anti Hepatitis C (HCV) Agents>, Electric Literature of 112-63-0, the main research area is arylaminosulfonylpyridinyl arylsulfonylaminopyridinyl aminoquinazolinone preparation PI4KIII alpha aminoquinoxaline aminonaphthyridine inhibitor; structure arylaminosulfonylpyridinyl arylsulfonylaminopyridinyl aminoquinazolinone inhibition PI4KIII alpha selectivity; inhibition hepatitis C virus replication arylaminosulfonylpyridinyl arylsulfonylaminopyridinyl aminoquinazolinone; toxicity nonracemic arylaminosulfonylpyridinyl aminoquinazolinone PI4KIII alpha inhibitor.

Arylaminosulfonylpyridinyl and arylsulfonylaminopyridinyl aminoquinazolinones such as I and related aminonaphthyridines and an aminoquinoxaline were prepared as inhibitors of the type III phosphatidylinositol-4-kinase α (PI4KIIIα), a lipid kinase that interacts with the HCV nonstructural 5A protein and enriches the HCV replication complex with phosphatidylinositol 4-phosphate, for use in the treatment of hepatitis C infection by inhibiting hepatitis C replication. The inhibition of PI4KIIIα by arylaminosulfonylpyridinyl and arylsulfonylamino aminoquinazolinones, arylsulfonylaminopyridinyl aminonaphthyridines, and an arylsulfonylaminopyridinyl aminoquinoxaline and their selectivities for PI4KIIIα over related phosphatidylinositol-3-kinase isoforms were determined The PI4KIIIα inhibition of I, its enantiomer, and the racemate were compared; the pharmacokinetics for I and its enantiomer were determined and toxicity was seen in rats given either one 50 mg/kg dose or multiple 40 mg/kg doses.

Journal of Medicinal Chemistry published new progress about Antiviral agents. 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

Zhang, Li; Jiao, Lei published the artcile< Pyridine-Catalyzed Radical Borylation of Aryl Halides>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is pyridine catalyzed radical borylation aryl halide diboron; aryl boronate preparation.

A pyridine-catalyzed transition-metal-free borylation reaction of haloarenes was developed based on the selective cross-coupling of an aryl radical and a pyridine-stabilized boryl radical. Arylboronates were produced from haloarenes under mild conditions. This borylation reaction features a broad substrate scope, operational simplicity, and gram-scale synthetic ability.

Journal of the American Chemical Society published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Chiang, I.-Tsang; Liu, Yu-Chang; Liu, Hua-Shan; Ali, Ahmed Atef Ahmed; Chou, Szu-Yi; Hsu, Tsung-I.; Hsu, Fei-Ting published the artcile< Regorafenib Reverses Temozolomide-Induced CXCL12/CXCR4 Signaling and Triggers Apoptosis Mechanism in Glioblastoma>, Product Details of C19H34O2, the main research area is glioblastoma regorafenib temozolomide signaling; CXCR4/CXCL12; Glioblastoma; NF-κB; Regorafenib; Temozolomide.

Abstract: Temozolomide (TMZ) monotherapy is known to be insufficient for resistant/relapsed glioblastoma (GBM), thus seeking a sensitization agent for TMZ is necessary. It was found that regorafenib may improve the overall survival of relapsed GBM patients. We aimed to discover whether regorafenib can enhance the anti-GBM effects of TMZ, and elucidate underlying mechanism. Our anal. of The Cancer Genome Atlas database revealed that the increased expression of CXCR4 is linked to poor survival of GBM patients. Addnl., TMZ treatment may trigger CXCR4/CXCL12 axis of GBM. We used two GBM cell lines, two primary GBM cells, and animal model to identify underlying mechanism and treatment efficacy of regorafenib combined with TMZ by cytotoxicity, apoptosis, reporter gene and invasion/migration assays, chemokine array, Western blotting, MRI, microarray, and immunohistochem. We observed that the chemokine CXCL-12 and its receptor CXCR4 regulate the resistance to TMZ, whereas the inhibition of CXCL-12/CXCR4 signaling sensitizes GBM cells to TMZ. The TMZ-induced CXCL-12/CXCR4 signaling, phosphor-extracellular signal-regulated kinases 1 and 2 (ERK1/2) and nuclear factor kappa light chain enhancer of activated B cells (NF-κB), and NF-κB-related proteins can effectively diminish when combining with regorafenib. Regorafenib significantly enhanced the TMZ-induced extrinsic/intrinsic apoptotic pathways, and facilitated the suppression of invasion and migration potential in GBM.

Neurotherapeutics published new progress about Antitumor agents. 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

Yang, Shenshen; Zhang, Xinyue; Dong, Yaqian; Sun, Guijiang; Jiang, Aili; Li, Yubo published the artcile< Cleavage rules of mass spectrometry fragments and rapid identification of chemical components of Radix Paeoniae Alba using UHPLC-Q-TOF-MS>, Reference of 112-63-0, the main research area is Radix Paeoniae Alba mass spectrometry fragment; Radix Paeoniae Alba; UHPLC-Q-TOF-MS; characteristic fragment; cleavage rules; neutral loss.

Radix Paeoniae Alba (RPA) presents several pharmacol. effects, including analgesia, liver protection, and toxicity reduction RPA consists mostly of monoterpenes and their glycosides, tannins, flavonoids, and organic acids, with monoterpenes being the main active pharmaceutical ingredients. To establish an effective method for rapid classification and identification of the main monoterpenes, flavonoids, and organic acids in RPA. We used ultrahigh-performance liquid chromatog. quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF-MS) and data post-processing technol. to rapidly classify and identify the monoterpenoids, flavonoids, and organic acids in RPA. We also summarised the diagnostic product ions and neutral losses of monoterpenoids, flavonoids, and organic acids in RPA reported in the literature. We identified 24 components, namely 18 monoterpenoids, one flavonoid, and five organic acids. In this study, we analyzed the chem. active pharmaceutical ingredients and assessed the quality of RPA. In addition, we demonstrated that UHPLC-Q-TOF-MS can be used to qual. classify and identify the variety of chem. components of traditional Chinese medicines (TCMs) to a certain extent. Moreover, we confirmed that mass spectrometry can be used to identify the components of TCMs.

Phytochemical Analysis published new progress about Analgesia. 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

Birault, Albane; Giret, Simon; Theron, Christophe; Gallud, Audrey; Da Silva, Afitz; Durand, Denis; Nguyen, Christophe; Bettache, Nadir; Gary-Bobo, Magali; Bartlett, John R.; Man, Michel Wong Chi; Carcel, Carole published the artcile< Sequential delivery of synergistic drugs by silica nanocarriers for enhanced tumour treatment>, SDS of cas: 112-63-0, the main research area is synergistic antitumor combination drug silica nanocarrier cap.

Herein hybrid silica nanoparticles have been engineered to direct the sequential delivery of multiple chemotherapeutic drugs in response to external stimuli such as variations in pH. The nanocarriers consist of conventional MCM-41-type nanoparticles, which have been functionalised with an organic ligand (or stalk) grafted onto the external surface. The stalk is designed to “”recognize”” a complementary mol., which serves as a “”cap”” to block the pores of the nanoparticles. First, camptothecin is introduced into the pores by diffusion prior to capping the pore apertures via mol. recognition. The cap, which is a derivative of 5-fluorouracil, serves as a second cytotoxic drug for synergistic chemotherapy. In vitro tests revealed that negligible release of the drugs occurred at pH 7.4, thus avoiding toxic side effects in the blood stream. In contrast, the stalk/cap complex is destabilized within the endolysosomal compartment (pH 5.5) of cancer cells, where release of the drugs was demonstrated. Furthermore, this environmentally responsive system exhibited a synergistic effect of the two drugs, where the pH-triggered release of the cytotoxic cap followed by diffusion-controlled release of the drug cargo within the pores led to essentially complete elimination of breast cancer cells.

Journal of Materials Chemistry B: Materials for Biology and Medicine published new progress about Antitumor agents. 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

Tjandra, Kristel C.; Forest, Chelsea R.; Wong, Chin Ken; Alcantara, Sheilajen; Kelly, Hannah G.; Ju, Yi; Stenzel, Martina H.; McCarroll, Joshua A.; Kavallaris, Maria; Caruso, Frank; Kent, Stephen J.; Thordarson, Pall published the artcile< Modulating the Selectivity and Stealth Properties of Ellipsoidal Polymersomes through a Multivalent Peptide Ligand Display>, SDS of cas: 71195-85-2, the main research area is medulloblastoma polymersome peptide ligand display; cancer drug delivery; multivalency; nanomedicines; peptides; polymeric nanoparticles; targeting ligands.

There is a need for improved nanomaterials to simultaneously target cancer cells and avoid non-specific clearance by phagocytes. An ellipsoidal polymersome system is developed with a unique tunable size and shape property. These particles are functionalized with inhouse phage-display cell-targeting peptide to target a medulloblastoma cell line in vitro. Particle association with medulloblastoma cells is modulated by tuning the peptide ligand d. on the particles. These polymersomes has low levels of association with primary human blood phagocytes. The stealth properties of the polymersomes are further improved by including the peptide targeting moiety, an effect that is likely driven by the peptide protecting the particles from binding blood plasma proteins. Overall, this ellipsoidal polymersome system provides a promising platform to explore tumor cell targeting in vivo.

Advanced Healthcare Materials published new progress about B cell. 71195-85-2 belongs to class esters-buliding-blocks, and the molecular formula is C9H3F5O2, SDS of cas: 71195-85-2.

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