Tag: 200-300

Shoikhedbrod, M. published an article in 2021, the title of the article was The advanced foam materials production in microgravity using the process of vibroturbulization.Category: esters-buliding-blocks And the article contains the following content:

Recently, the task of the intensification of the existing technol. processes using the intensive mixing of different environment, which are characterized by different densities (water + gas, water + solid particles + gas, water + oil so forth) is actual. The conducted studies determined that at a certain frequency and vibration acceleration of vibration, a resonant phenomenon occurs-vibroturbulization, in which the above of the fluid surface air in a vibrating vessel with fluid takes an active part in the intense mixing of several immiscible fluids and in the formation of a homogeneous mixture Shoikhedbrod presented the theor. model and calculation of the phys. parameters of vibroturbulization process, which were used in the intensification of existing technol. processes (floatation) and in the development of completely new technol. processes: advanced foam materials production, uniform fully dense ceramics production, and biodiesel destruction prevention during storage and transportation. The paper presents the results of theor. modeling of features of the process of vibroturbulization, taking place in conditions of microgravity, which permitted to develop a new method of an advanced foam materials production in microgravity using the above of the matrix melt surface air from microdispersed air bubbles in a vibrating vessel as a filler and purposeful injection of the “working pillow” from microdispersed air bubbles, formed in the process of vibroturbulization, into the matrix melt by increasing of the vibration frequency as foaming of the matrix melt by a filler. The practical realization of the developed method in microgravity conditions was confirmed during of tests aboard of flying laboratory aircraft IL-76K. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Category: esters-buliding-blocks

The Article related to biodiesel foam material microgravity floatation vibroturbulization, Fossil Fuels, Derivatives, and Related Products: Other Fractions and other aspects.Category: esters-buliding-blocks

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

On January 31, 2021, Zong, Zhaoyun; Liu, Jing; Wang, Ning; Yang, Changmei; Wang, Qingtao; Zhang, Wenhao; Chen, Yuling; Liu, Xiaohui; Deng, Haiteng published an article.Application of 2358-84-1 The title of the article was Nicotinamide mononucleotide inhibits hepatic stellate cell activation to prevent liver fibrosis via promoting PGE2 degradation. And the article contained the following:

Liver fibrosis is a reversible wound-healing response to acute or chronic liver injury that can progress to cirrhosis and liver cancer. Finding new strategies for prevention and management of liver fibrosis is urgently needed. It is known that hepatic stellate cell (HSC) is the primary source of extracellular matrix that drives liver fibrosis progression. Herein, we carried out a comprehensive secretome profiling to identify NMN-induced changes in secretory proteins and found that NMN suppressed the secretion of profibrotic protein and oxidoreductase in activated HSC (LX-2) cells, while real-time quant. PCR anal. revealed that NMN downregulated profibrotic gene expression, resulting in HSC inactivation. Next, we demonstrated that NMN (NMN) reduced the accumulation of liver extracellular matrix in thioacetamide (TAA) and carbon tetrachloride (CCl4) induced mouse models for liver fibrosis. Furthermore, we determined that NMN inhibited oxidation-mediated 15-PGDH degradation to promote prostaglandin E2 degradation and suppress HSC activation. In summary, our results propose that NMN supplementation is a new therapeutic approach for liver fibrosis prevention. The experimental process involved the reaction of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)(cas: 2358-84-1).Application of 2358-84-1

The Article related to nicotinamide mononucleotide stellate cell liver fibrosis pge2, 15-pgdh, hepatic stellate cells, liver fibrosis, nicotinamide mononucleotide, prostaglandin e(2), Pharmacology: Effects Of Gastrointestinal and Respiratory Drugs and other aspects.Application of 2358-84-1

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

On July 18, 2012, Roosen, Philipp C.; Kallepalli, Venkata A.; Chattopadhyay, Buddhadeb; Singleton, Daniel A.; Maleczka, Robert E.; Smith, Milton R. published an article.Category: esters-buliding-blocks The title of the article was Outer-Sphere Direction in Iridium C-H Borylation. And the article contained the following:

The NHBoc group affords ortho selective C-H borylations in arenes and alkenes. Exptl. and computational studies support an outer sphere mechanism where the N-H proton H bonds to a boryl ligand O. The regioselectivities are unique and complement those of directed ortho metalations. The experimental process involved the reaction of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate(cas: 141940-37-6).Category: esters-buliding-blocks

The Article related to iridium catalyzed borylation arene alkene regiochem, Organometallic and Organometalloidal Compounds: Boron Compounds and other aspects.Category: esters-buliding-blocks

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

On July 25, 2022, Zhang, Xinling; Yuan, Ning; Xu, Shuo; Li, Yi; Wang, Qibao published an article.Formula: C13H10O3 The title of the article was Efficient adsorptive elimination of organic pollutants from aqueous solutions on ZIF-8/MWCNTs-COOH nanoadsorbents: Adsorption kinetics, isotherms, and thermodynamic study. And the article contained the following:

The removal of organic pollutants was examined by new zeolitic imidazolate framework-8/carboxyl-functionalized multi-walled carbon nanotubes (ZIF-8/MWCNTs-COOH) nanoadsorbents, which were prepared via controlling the reaction sequence of MWCNTs-COOH with the precursors of ZIF-8. Structural morphol. and chem. composition characterizations confirmed the successful preparation of ZIF-8/MWCNTs-COOH nanoadsorbents. The obtained samples manifested a preferable adsorption capacity for Congo red with the maximum adsorption capacity of 1185.58 mg g-1 with an adsorption removal rate of 97.93% at equilibrium adsorption. Further analyses indicated that the adsorption process conformed to the pseudo-second-order kinetic model and Langmuir adsorption isotherm. The thermodn. analyses were depicted as endothermic, entropy-increasing, and spontaneous. The effects of pH value, interfering ions, and dosage on the adsorption properties were systematically explored. The nanoadsorbent can be expediently reused for eight cycles without a prominent reduction in adsorption activity. The improved performance and high reusability can be ascribed to the increasing sp. surface, the presence of electrostatic interaction, hydrogen bonding, and π-π interaction between ZIF-8/MWCNTs-COOH and organic mols. In addition, the prepared composites also showed a better adsorption performance for tetracycline with the equilibrium adsorption capacity of 471.22 mg g-1 compared to pure ZIF-8 and MWCNTs-COOH. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Formula: C13H10O3

The Article related to thermodn efficient adsorptive elimination organic pollutant, Waste Treatment and Disposal: Physical Treatment Of Aqueous Wastes and other aspects.Formula: C13H10O3

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

Dong, Yanyan; Wu, Wendan; Liang, Liping; Tao, Shuqi; Meng, Xu published an article in 2020, the title of the article was Preparation and adsorption properties of polyacrylamide/graphene oxide composite aerogel.Electric Literature of 2358-84-1 And the article contains the following content:

Graphene oxide (GO) and acrylamide (AM) were polymerized and crosslinked to form a composite aerogel. The microscopic properties and thermal stability of the composite aerogel were characterized by IR spectroscopy, thermogravimetric instrument and SEM. The adsorption properties of the composite aerogel were tested. The effects of temperature, GO/AM ratios, pH values, feed amounts, dye liquor concentrations and times on the adsorption properties of composite aerogels were investigated. The results showed that under the same exptl. conditions, the more the aerogel dosage and the longer the adsorption time, the better the adsorption performance of the composite aerogel on the active yellow dye liquor; the temperature had little effect on the adsorption of the dye liquor. The gel had the greatest adsorption effect under acidic conditions. The pH was 0.99, the dosage was 0.25g, the concentration of the dye solution was 40mg/L, and the adsorption rate reached 65.51% after adsorption for 24 h. The experimental process involved the reaction of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)(cas: 2358-84-1).Electric Literature of 2358-84-1

The Article related to polyacrylamide graphene oxide composite aerogel adsorption, Waste Treatment and Disposal: Physical Treatment Of Aqueous Wastes and other aspects.Electric Literature of 2358-84-1

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

On September 30, 2011, Kawano, Syumi; Suzuki, Shigeru published an article.Electric Literature of 1985-51-9 The title of the article was A study of chemical substances leaching from babies’ toys made of plastics by LC/MS. And the article contained the following:

Brominated flame retardants (BFRs) leaching in water (for 24h), amylase aqueous solution (for 24h) and ethanol (for 10) minutes from 18 kinds of babies’ toys were determined by LC/MS, and the some other chems. were identified by LC/ToFMS. The aim of the study is to determine or identify chems. leaching from baby toys with a method roughly simulating baby’s behavior of licking, sucking or biting. Bisphenol A leaching in water and ethanol were 3∼430 ng/item and 1.3∼92 ng/item, resp. Tribromophenol leaching in water, amylase aqueous solution and ethanol were 13∼220 ng/item, 0.5∼200 ng/item and 0.1∼0.2 ng/item, resp. Tetrabromobisphenol A leaching in water, amylase aqueous solution and ethanol were 5.0∼590 ng/item, 0.4∼6.9 ng/item and 2.3∼4.4 ng/item, resp. Hexabromocyclododecane diastereoisomers were not found in water in the limit of detection of 1 ng/item, however those in amylase aqueous solution and ethanol were 3.0∼18 ng/item and 0.6∼25 ng/item, resp. Chems. identified in the leachates by LC/ToFMS were a nucleating agent, a light stabilizer, an intermediate in organic syntheses which were plastic synthesizers for food package, plastic lens, liquid crystal and other plastic items, and lubricants. It is suggested that most of plastic baby toys would be contaminated with BFRs and various chem. additives not used for baby toys. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Electric Literature of 1985-51-9

The Article related to baby toy plastic chem substance leaching lcms, Plastics Manufacture and Processing: Chemical Properties Of Resins and other aspects.Electric Literature of 1985-51-9

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

Volkov, G. U.; Rudnaya, G. V.; Berent, N. I. published an article in 1988, the title of the article was Crosslinking and degradative transformations in a film during oxidation.Category: esters-buliding-blocks And the article contains the following content:

Oxidative crosslinking of model coatings from piperylene rubber SKP-N and dodecyl methacrylate (I) or butyrate proceeded via formation of O-containing groups; the degradation of SKP-N prevailed and no significant polymerization of I was observed Low d.p. of I was attributed to degradative chain transfer from alkyl and, especially, peroxide radicals of I on SKP-N with formation of stable allyl radicals. The crosslinking of coatings from SKP-N and neopentyl glycol dimethacrylate (II) was oxidative in the top layer and was due to homopolymerization of II in the bottom (adjacent to substrate) layer when coatings contained a small amount of II. The homopolymer of II was insignificantly in thin coatings, owing to degradative chain transfer, but increased in the coatings with thickness 60-70 μ. Increasing the content of II ≥65% resulted in oxidative crosslinking throughout the film, apparently because of the increased O diffusion. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Category: esters-buliding-blocks

The Article related to crosslinking piperylene rubber methacrylate coating, oxidation piperylene rubber methacrylate coating, degradation piperylene rubber methacrylate coating, Coatings, Inks, and Related Products: Curing Processes and Agents and other aspects.Category: esters-buliding-blocks

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

Shield, William P. III; Cellini, Ashley; Tian, Hongying; Wilson, Kim; Dan, Yang; Abzug, Joshua M.; Garcia, Sonia; Moritani, Norifumi; Alferiev, Ivan; Chorny, Michael; Takigawa, Masaharu; Ng, Vincent Y.; Iwamoto, Masahiro; Enomoto-Iwamoto, Motomi published an article in 2020, the title of the article was Selective Agonists of Nuclear Retinoic Acid Receptor Gamma Inhibit Growth of HCS-2/8 Chondrosarcoma Cells.Quality Control of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate) And the article contains the following content:

Chondrosarcoma is the second most common primary bone sarcoma. Treatment of chondrosarcoma is limited to surgery due to radiation and chemotherapy resistance of this cancer. An ideal treatment for chondrosarcoma would be a well-tolerated, minimally invasive local or systemic treatment modality to halt or slow tumor growth prior to resection of local, unresectable local, or metastatic disease. Palovarotene, an agonist of nuclear retinoic acid receptor γ (RARγ) has shown therapeutic action for treatment of heterotopic ossification and osteochondroma without serious adverse effects in animal models. We hypothesized that selective agonists of RARγ would have an inhibitory effect on chondrosarcoma. All human chondrosarcoma specimens expressed RARγ as determined by immunohistochem. staining. The ΗCS-2/8 chondrosarcoma cell line, established from low-grade human chondrosarcoma, was used to examine the actions of RARγ agonists. In ΗCS2/8 pellet cultures, RARγ agonist treatment reduced the mass size and significantly decreased total glycosaminoglycan, protein amounts, and gene expression levels of cartilage matrix mols. when compared with control groups. Systemic treatment with RARγ agonists significantly inhibited the growth of ΗCS-2/8 cell transplants in vivo. Furthermore, local injection of RARγ agonist-loaded poly-lactic acid nanoparticles induced regression of the mass size of the transplants. Histol. anal. demonstrated that RARγ agonist treatment inhibited cell proliferation activity and stimulated encapsulation of the tumor. These findings indicate that RARγ agonists, including palovarotene, may have an anti-tumor effect on low-grade chondrosarcomas. The experimental process involved the reaction of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)(cas: 2358-84-1).Quality Control of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)

The Article related to chondrosarcoma cell nuclear retinoic acid receptor gamma inhibit growth, chondrosarcoma, nanoparticles, palovarotene, retinoic acid receptor agonist, Pharmacology: Effects Of Neoplasm Inhibitors and Cytotoxic Agents and other aspects.Quality Control of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)

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

Volkov, G. U.; Boichuk, B. G. published an article in 1988, the title of the article was Kinetic features of the oxidative copolymerization of methacrylic esters with oligomeric piperylene rubber in a film.HPLC of Formula: 1985-51-9 And the article contains the following content:

The ratio (R) between consumption rates of double bonds and O was monitored during oxidative polymerization of piperylene rubber-dodecyl methacrylate (I) or – neopentyl glycol dimethacrylate (II) coatings to elucidate the roles of homopolymerization and copolymerization with O in this reaction. The R was ∼1-2 during almost entire period of polymerization, indicating that the homopolymerization somewhat prevailed over the copolymerization An increase in R toward the end of polymerization of coatings containing ≤35% I was attributed to morphol. changes that transfered the process into diffusion regime. A decrease in R in the beginning of polymerization of coatings containing II was ascribed to the decomposition of II associates The latter coatings showed a sharp increase in R toward the end of polymerization, due to increased consumption rate of vinyl bonds. The activation energies of oxidative polymerization processes were determined The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).HPLC of Formula: 1985-51-9

The Article related to oxidative polymerization piperylene rubber acrylate coating, kinetics oxidative polymerization piperylene rubber acrylate, Coatings, Inks, and Related Products: Curing Processes and Agents and other aspects.HPLC of Formula: 1985-51-9

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

On March 7, 1989, Kuefner, Ulrike; Lohrmann, Ute; Montejano, Yolanda D.; Vitols, Karin S.; Huennekens, F. M. published an article.Related Products of 53838-27-0 The title of the article was Carboxypeptidase-mediated release of methotrexate from methotrexate α-peptides. And the article contained the following:

Methotrexate (MTX) α-peptides containing representative neutral (alanine), acidic (aspartic acid), and basic (arginine) amino acids were synthesized by a regiospecific route. These peptides were hydrolyzed by carboxypeptidases to yield MTX and the amino acids. Pancreatic carboxypeptidase A (CP-A) hydrolyzed MTX-Ala and, at a much slower rate, MTX-Asp and MTX-Arg. MTX-Ala was also a substrate for pancreatic carboxypeptidase B (CP-B); marginal activity was observed with this enzyme and MTX-Arg. Human serum hydrolyzed only MTX-Arg; biphasic inhibition of this activity by 2-(mercaptomethyl)-3-(guanidinoethyl)thiopropionate was consistent with the known presence of 2 types of endogenous carboxypeptidase (CP-N). Cytotoxicity of the MTX peptides toward L1210 cells in culture was enhanced considerably in the presence of the appropriate carboxypeptidases. MTX-Ala was much less toxic than MTX (ID50 values of 2.0 × 10-6M and 2.4 × 10-8M, resp.), but in the presence of CP-A the ID50 of the peptide improved to 8.5 × 10-8M. Similar results were obtained with MTX-Asp/CP-A and MTX-Ala/CP-B combinations. MTX-Arg showed good cytotoxicity (ID50 of 5.0 × 10-8M), due to CP-N activity in the fetal bovine serum of the culture medium; inclusion of CP-B lowered the ID50 to that of MTX. Possible clin. uses of MTX peptides are discussed. The experimental process involved the reaction of (S)-5-tert-Butyl 1-methyl 2-aminopentanedioate(cas: 53838-27-0).Related Products of 53838-27-0

The Article related to methotrexate peptide preparation cytotoxicity carboxypeptidase, antitumor methotrexate peptide prodrug preparation, Pharmacology: Effects Of Neoplasm Inhibitors and Cytotoxic Agents and other aspects.Related Products of 53838-27-0

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