Month: December 2022

Wang, Wu published the artcileTwo-stage reactive shape memory thiol-epoxy-acrylate system and application in 3D structure design, Quality Control of 7575-23-7, the main research area is shape memory thiol epoxy acrylate system photocuring; dynamic mech property.

Shape memory polymers (SMPs) are widely applied in actuator, aerospace, and super wetting. Besides, the specific structures of SMPs are important to achieve such performance. However, the preparation process of specific structure of SMPs to achieve certain performance are always time-consuming and costly for the high crosslinking d. exists in the resin matrix. Fortunately, two-stage reactive SMPs system can be used to prepare complex structure for the function of precise material design. To attain this goal and explore new application of SMPs, we designed a novel two-stage reactive shape memory polymer (SMP) system based on non-stoichiometric thiol, epoxy, and acrylate. In this novel system, intermediate polymer with shape memory performance can be prepared in the first thermal curing stage. With the shape memory property, the intermediate polymer can be designed to a certain structure. Then, final polymer with stable and complex shape can be further fabricated after the photo-curing in the second stage. Therefore, this novel two-stage reactive SMP system shows promising applications in 3D structure manufacturing, mold-free fabrication, and spatio-selective materials.

Advanced Composites and Hybrid Materials published new progress about Complex modulus, tan δ. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Quality Control of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Russo, Claudio published the artcileRheological and mechanical characterization of dual-curing thiol-acrylate-epoxy thermosets for advanced applications, Synthetic Route of 7575-23-7, the main research area is epoxy thiol acrylate dual curing rheol mech property; acrylate; adhesive; dual-curing; epoxy; shape-memory polymer; thiol.

Mech. and rheol. properties of novel dual-curing system based on sequential thiol-acrylate and thiol-epoxy reactions are studied with the aim of addressing the obtained materials to suitable advanced applications. The crosslinking process is studied by rheol. anal. in order to determine conversion at gelation and the critical ratio. These parameters are used to discuss the intermediate material structure for each acrylate proportion and their possible application in the context of dual-curing and multi-step processing scenarios. Results from dynamo-mech. anal. and mech. testing demonstrate the high versatility materials under investigation and revealed a wide range of achievable final properties by simply varying the proportion between acrylate and thiol group. The intermediate stability between curing stages has been analyzed in terms of their thermal and mech. properties, showing that these materials can be stored at different temperatures for a relevant amount of time without experiencing significant effects on the processability. Exptl. tests were made to visually demonstrate the versatility of these materials. Qual. tests on the obtained materials confirm the possibility of obtaining complex shaped samples and highlight interesting shape-memory and adhesive properties.

Polymers (Basel, Switzerland) published new progress about Adhesive bonding. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Synthetic Route of 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nilsson, Kurt G. I. published the artcileInfluence of various parameters on the yield and regioselectivity of glycosidase-catalyzed formation of oligosaccharide glycosides, COA of Formula: C9H16O6, the main research area is disaccharide formation galactosidase mannosidase.

The effects of the nature of the donor and acceptor aglycons and the temperature of the yields and regioselectivity of glycosidase-catalyzed disaccharide formation were studied. α-Galactosidase catalyzed the preponderant formation of either α(1→2)-, 2(1→3)-, or α(1→6)-linked digalactosides by using different α-galactosyl derivatives as acceptor. α-Mannosidase mainly formed α(1→6)-linked or α(1→2)-linked dimannose or dimannosyl derivatives, depending on the donor and acceptors. The yields and regioselectivity of p-nitrophenyl and Me digalactosides formed by α-galactosidase decreased with increasing temperature

Annals of the New York Academy of Sciences published new progress about. 2595-07-5 belongs to class alcohols-buliding-blocks, name is (2R,3R,4S,5R,6R)-2-(Allyloxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C9H16O6, COA of Formula: C9H16O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Huang, Sai published the artcileSystematic synthesis of REVO4 micro/nano crystals with selective exposure of high energy {001} facets and luminescence (RE = Lanthanide and Y0.95Eu0.05), Related Products of alcohols-buliding-blocks, the main research area is lanthanide micro crystals luminescence.

Systematic synthesis of REVO4 nano/microcrystals (RE = La-Lu lanthanides) was performed via hydrothermal reaction under 200°C and pH = 12 for 30 h, and the effects of malate (Mal2-) chelate and lanthanide contraction on phase structure and crystal morphol. were revealed. With RE = Y0.95Eu0.05 as representative, the influence of solution pH, reaction temperature/duration and VO3-4 concentration was also systematically investigated. Mal2- was demonstrated to promote crystallization of phase-pure REVO4 through suppressing RE3+ hydrolysis to form hydroxyl nitrate impurity. The t-REVO4 crystals were identified to be single-crystalline quasi-squares significantly exposed with high energy {001} facets (∼80% coverage for t-LuVO4) owing to the capping effect of Mal2-, and the lateral size of the crystals gradually increased from ∼20 to 850 nm with decreasing RE3+ size from Ce3+ to Lu3+. Aside from structure details and IR response of the full series of REVO4, photoluminescence features were analyzed for RE = Y0.95Eu0.05, Eu, Dy, Er and Tm, and the 600°C calcined (Y0.95Eu0.05).

Journal of Materials Research and Technology published new progress about Hydrolysis. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wei, Enwei published the artcileMicrowave-assisted extraction releases the antioxidant polysaccharides from seabuckthorn (Hippophae rhamnoides L.) berries, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Hippophae berry antioxidant polysaccharide microwave assisted extraction; Antioxidant activity; Microwave power; Microwave-assisted extraction; Polysaccharide; Seabuckthorn berries.

Seabuckthorn berries are rich in various bioactive components and used as a traditional medicine for a long time. Until now, little information is available for the extraction of polysaccharides from seabuckthorn berries (PSB) by linking antioxidant activity and microwave power. In this study, microwave-assisted extraction, characterization, in vitro and in vivo antioxidant activities of PSB were explored. The maximum PSB extraction yield of 0.264 ± 0.005% was obtained under the optimal conditions as follows: microwave power 600 W, extraction time 6 min, liquid to material ratio 10: 1 mL/g, and extraction temperature 85 °C. Meanwhile, effects of microwave power on antioxidant activity of PSB was investigated and found that microwave at power of 600 W can facilitate the release of antioxidant PSB in a high yield. The main monosaccharides of PSB were Rha, Man, Glu, and Gal at a molar ratio of 1.00: 6.89: 1.62: 13.52, UV and FT-IR anal. coupled with mol. weight determination further indicated that PSB is a polydisperse polysaccharide. Moreover, PSB obtained under the optimal conditions equally exerted in vivo antioxidant activity through decreasing malonaldehyde and protein carbonyls and increasing superoxide dismutase and glutathione.

International Journal of Biological Macromolecules published new progress about Hippophae rhamnoides. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Chang published the artcileLoss of the Golgi Matrix Protein 130 Cause Aberrant IgA1 Glycosylation in IgA Nephropathy, Product Details of C6H12O6, the main research area is IgA1 glycosylation GM130 chronic kidney disease nephropathy; Glycosylate deficiency IgA1; Golgi matrix protein 130; IgA nephropathy; Peripheral blood mononuclear cells; Tonsillar lymphocyte.

Aberrant O-glycosylation IgA1 production is a major factor in the pathogenesis of IgA nephropathy, but the underlying mechanism is still unclear. IgA1 glycosylation modification is in Golgi, and downregulation of the Golgi peripheral membrane protein Golgi matrix protein 130 (GM130) could lead to glycosylation deficiency. In this study, we aimed to explore the role of GM130 in glycosylate deficiency IgA1 (Gd-IgA1) production We enrolled 27 IgA nephropathy patients, 12 patients with chronic tonsillitis, 15 non-IgAN chronic kidney disease patients, and 15 healthy volunteers as healthy control. We explored GM130 expression in Tonsillar tissue by immunofluorescence staining and Western blotting and expression in peripheral blood mononuclear cells (PBMCs) by flow cytometry. The concentration of IgA1 and level of O-glycosylation were determined by ELISA and Vicia Villosa lectin-binding assay. Real-time PCR and Western blot were used to analyze the levels of β1,3-Gal transferase (C1GALT1) and ST6GalNAC2, resp. To explore the contribution of GM130 in IgA1 O-glycosylation modification, cells were subjected to experiments for evaluation of GM130 silencing by GM130-siRNA transfection. GM130 expression was significantly decreased in tonsil tissues and PBMC of IgAN patients; the expression of C1GALT1 decreased and Gd-IgA1 level increased significantly in patients with IgAN patients. The expression of GM130 was neg. related to Gd-IgA1 production By siRNA transfection, our results clearly indicated that the downregulation of GM130 can increase IgA1 O-glycosylation deficiency, which is thought to reduce C1GALT1 expression but not affect the expression of ST6GalNAC2. We identified and demonstrated that GM130 plays an important role in IgA1 O-glycans deficiency in IgAN patients, by neg. regulating C1GALT1 expression. We believe that this finding will provide theor. foundations for a new mechanism of Gd-IgA1 production in IgAN patients.

American Journal of Nephrology published new progress about CD19 antigens Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Product Details of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Diaz-Galvez, Kevin R. published the artcileSpecific capture of glycosylated graphene oxide by an asialoglycoprotein receptor: a strategic approach for liver-targeting, Related Products of alcohols-buliding-blocks, the main research area is hepatic cancer glycosylated graphene oxide asialoglycoprotein receptor.

In this work, we report the evaluation of lactosylated graphene oxide (GO-AL) as a potential drug carrier targeted at an asialoglycoprotein receptor (ASGPR) from hepatic cancer cells. Structural-modification, safety evaluation, and functional anal. of GO-AL were performed. Safe application of GO-AL, an evaluation of the cytotoxic effect, hemolytic properties, and specific interactions of the glycoconjugate were also studied. SEM and AFM anal. of the GO showed graphene sheets with a layer size of 2-3 nm, though a few of them reached 4 nm. The Raman spectra presented characteristic peaks of graphene oxide at 1608 cm-1 and 1350 cm-1, corresponding to G and D bands, resp. Besides, Si-O peaks for the APTES conjugates of GO were identified by FTIR spectroscopy. No cytotoxic or hemolytic effects were observed for GO samples, thus proving their biocompatibility. The interaction of Ricinus communis lectin confirmed that GO-AL has a biorecognition capability and an exposed galactose structure. This biorecognition capability was accompanied by the determination of the specific absorption of lactosylated GO by HepG2 cells mediated through the asialoglycoprotein receptor. The successful conjugation, hemolytic safety, and specific recognition described here for lactosylated GO indicate its promise as an efficient drug-delivery vehicle to hepatic tissue.

RSC Advances published new progress about Biocompatibility. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Miklas, Jason W. published the artcileAmino acid primed mTOR activity is essential for heart regeneration, Product Details of C4H6O5, the main research area is heart disease regeneration mTOR amino acid; Biological sciences; Cell biology; Tissue Engineering.

Heart disease is the leading cause of death with no method to repair damaged myocardium due to the limited proliferative capacity of adult cardiomyocytes. Curiously, mouse neonates and zebrafish can regenerate their hearts via cardiomyocyte de-differentiation and proliferation. However, a mol. mechanism of why these cardiomyocytes can re-enter cell cycle is poorly understood. Here, we identify a unique metabolic state that primes adult zebrafish and neonatal mouse ventricular cardiomyocytes to proliferate. Zebrafish and neonatal mouse hearts display elevated glutamine levels, predisposing them to amino-acid-driven activation of TOR, and that TOR activation is required for zebrafish cardiomyocyte regeneration in vivo. Through a multi-omics approach with cellular validation we identify metabolic and mitochondrial changes during the first week of regeneration. These data suggest that regeneration of zebrafish myocardium is driven by metabolic remodeling and reveals a unique metabolic regulator, TOR-primed state, in which zebrafish and mammalian cardiomyocytes are regeneration competent.

iScience published new progress about Amino acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Product Details of C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lee, Hwa-Jin published the artcileMechanism for Transition of Reverse Cylindrical Micelles to Spherical Micelles Induced by Diverse Alcohols, HPLC of Formula: 111-87-5, the main research area is reverse micelle lecithin calcium chloride propanol pentanol hexanol octanol.

Herein, the effects of various alcs. on lecithin/CaCl2 organogels are investigated. Mixtures of lecithin and CaCl2 form reverse cylindrical micelles, resulting in optically transparent organogels. The addition of various alcs. to a mixture of lecithin and CaCl2 induces a decrease in viscosity through which reverse cylindrical micelles are transformed into spherical micelles (or short cylindrical micelles). Long-hydrocarbon-chain alcs. decrease the viscosity of lecithin/CaCl2 mixtures more efficiently. Hydrogen bonding and hydrocarbon chain interactions between lecithin and alc. play important roles in the morphol. transition. More importantly, isothermal titration calorimetry was conducted to obtain thermodn. variables such as the enthalpy, equilibrium constant, Gibbs free energy, entropy, and stoichiometry of the associated mols. observed in the transition. It was found that the transition is an entropically driven process, in which the endothermic and exothermic behaviors were observed depending on the hydrocarbon chain length in the alc. In addition, the enthalpy for the association of the alc. with lecithin showed a linear relationship depending on the hydrocarbon chain length, in which the magnitude of hydrogen bonding and hydrocarbon chain interactions was obtained quant. To the best of our knowledge, this is the first study reporting the thermodn. properties of the morphol. transition observed in a reverse self-assembly process.

Langmuir published new progress about Enthalpy. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, HPLC of Formula: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Jukic, Ivo published the artcileUniversal features in the lifetime distribution of clusters in hydrogen-bonding liquids, Related Products of alcohols-buliding-blocks, the main research area is universal lifetime distribution hierarchy cluster liquid hydrogen bond.

Hydrogen-bonding liquids, typically water and alcs., are known to form labile structures (network, chains, etc.); hence, the lifetime of these structures is an important microscopic parameter, which can be calculated via computer simulations. Since these cluster entities are mostly statistical in nature, one would expect that, in the short-timescale regime, their lifetime distribution would be a broad Gaussian-like function of time, with a single maximum representing their mean lifetime, and be weakly dependent on criteria such as the bonding distance and angle, much similar to non-hydrogen-bonding simple liquids, while the long-timescale regime is known to have some power law dependence. Unexpectedly, all the hydrogen-bonding liquids studied herein, namely water and alcs., display three highly hierarchical specific lifetimes, in the sub-picosecond range 0-0.5 ps. The dominant lifetime depends very strongly on the bonding-distance criterion and is related to hydrogen-bonded pairs. This mode is absent in non-H-bonding simple liquids The secondary and tertiary mean lifetimes are related to clusters and are nearly independent of the bonding criterion. Of these two lifetimes, only the first one can be related to that of simple liquids, which poses the question of the nature of the third lifetime. The study of alcs. reveals that this third lifetime is related to the topol. of the H-bonded clusters and that its distribution may also be affected by the alkyl tail surrounding the “”bath””. This study shows that hydrogen-bonding liquids have a universal hierarchy of hydrogen-bonding lifetimes with a timescale regularity across very different types, and which depend on the topol. of the cluster structures.

Physical Chemistry Chemical Physics published new progress about Aliphatic alcohols, C1-8 Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts