Category: alcohols-buliding-blocks

Yang, Jing published the artcileHigh-quality bio-oil from one-pot catalytic hydrocracking of kraft lignin over supported noble metal catalysts in isopropanol system, SDS of cas: 58783-82-7, the main research area is kraft lignin isopropanol metal catalyst bio oil catalytic hydrocracking; Hydrocracking; Isopropanol; Kraft lignin; Nobel metal catalysts; Orthogonal array design.

Catalytic hydrocracking of kraft lignin was carried out in isopropanol system and an orthogonal array design (OAD) was employed to optimize the exptl. conditions. GC-MS/FID, elemental anal., GPC and 1H-13C HSQC NMR were carried out for entire investigation of the liquid products. The results indicated that the hydrocracking process was thermally controlled and catalysts showed significant influences on the product distributions. Comparing with Pd/C, Pt/C and Ru/C, Rh/C inhibited the self-condensation of isopropanol and reduced the formation of oxygenic-chain compounds The excellent catalytic activity for phenols conversion was obtained over Rh/C. The routes of oxygenic-chain compounds formation and phenol conversion were proposed in detail. The least oxygenic-chain compounds formation, the highest phenols conversion (93.4%), the lowest O/C ratio (0.094) and the highest HHV (37.969 MJ/kg) provided the possibility of the high quality bio-oil obtained over Rh/C in isopropanol medium.

Bioresource Technology published new progress about Aromatic hydrocarbons Role: PRP (Properties), TEM (Technical or Engineered Material Use), USES (Uses). 58783-82-7 belongs to class alcohols-buliding-blocks, name is 5-Tridecanol, and the molecular formula is C13H28O, SDS of cas: 58783-82-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Kai published the artcileUncovering abnormal changes in logP after fluorination using molecular dynamics simulations, Recommanded Product: n-Octanol, the main research area is mol dynamics simulations; Fluorination; Molecular dynamics; Solvation free energy calculation; logP.

The fluorination-induced changes in the logP (1-octanol/water partition coefficient) of ligands were examined by mol. dynamics simulations. The protocol and force field parameters were first evaluated by calculating the logP values for n-alkanes, and their monofluorinated and monochlorinated analogs. Then, the logP values of several test sets (1-butanol, 3-propyl-1H-indole, and analogs fluorinated at the terminal Me group) were calculated The calculated results agree well with experiment, and the root mean square error values are 0.61 and 0.68 log units for the GAFF and GAFF2 force fields, resp. Finally, the logP estimation was extended to a drug mol., TAK-438, for which fluorination-induced abnormal logP reduction has been observed exptl. This abnormal change was qual. reproduced by the mol. dynamics simulations. We found that the abnormal logP reduction can be mainly attributed to the effect of fluorination-induced dipole change. Our results suggest that mol. simulation is a useful strategy to predict the fluorination-induced change in logP for drug discovery applications.

Journal of Computer-Aided Molecular Design published new progress about Dipole. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cao, Jingsong published the artcilemRNA Therapy Improves Metabolic and Behavioral Abnormalities in a Murine Model of Citrin Deficiency, COA of Formula: C4H6O5, the main research area is metabolic behavioral abnormality citrin deficiency mRNA lipid nanoparticle.

Citrin deficiency is an autosomal recessive disorder caused by loss-of-function mutations in SLC25A13, encoding the liver-specific mitochondrial aspartate/glutamate transporter. It has a broad spectrum of clin. phenotypes, including life-threatening neurol. complications. Conventional protein replacement therapy is not an option for these patients because of drug delivery hurdles, and current gene therapy approaches (e.g., AAV) have been hampered by immunogenicity and genotoxicity. Although dietary approaches have shown some benefits in managing citrin deficiency, the only curative treatment option for these patients is liver transplantation, which is high-risk and associated with long-term complications because of chronic immunosuppression. To develop a new class of therapy for citrin deficiency, codon-optimized mRNA encoding human citrin (hCitrin) was encapsulated in lipid nanoparticles (LNPs). We demonstrate the efficacy of hCitrin-mRNA-LNP therapy in cultured human cells and in a murine model of citrin deficiency that resembles the human condition. Of note, i.v. (i.v.) administration of the hCitrin-mRNA resulted in a significant reduction in (1) hepatic citrulline and blood ammonia levels following oral sucrose challenge and (2) sucrose aversion, hallmarks of hCitrin deficiency. In conclusion, mRNA-LNP therapy could have a significant therapeutic effect on the treatment of citrin deficiency and other mitochondrial enzymopathies with limited treatment options.

Molecular Therapy published new progress about Body weight. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, COA of Formula: C4H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yearty, Kasey L. published the artcileDeveloping and Implementing Multioutcome Experiments in Undergraduate Teaching Laboratories To Promote Student Ownership of the Experience: An Example Multioutcome Experiment for the Oxidation of Alcohols, SDS of cas: 584-02-1, the main research area is multioutcome experiment undergraduate teaching laboratory student experience oxidation alc.

Single-outcome experiments are used in the undergraduate instructional laboratory, particularly for large lectures associated with multiple sections of instructional laboratories, due in large part to efficiencies associated with chem. purchases, experiment preparations, and assessments. Despite the practical advantages, single-outcome experiments are not effective in encouraging students to critically analyze and interpret their acquired individual results. Instead, students are satisfied if their results are the same as or similar to all of their classmates’ results, limiting the opportunity for engagement with the laboratory content. In contrast, multioutcome experiments (MOEs) require students to explore the same chem. reaction or transformation but obtain individual results. Individualization of results is accomplished by using a set of starting materials or reagents, one of which is assigned to each student. Students do not know the identity of the assigned component but may be given possible options for its identity. Students elucidate the identity of their individualized products, using modern anal. techniques such as gas chromatog., Fourier-transform IR (FTIR) spectroscopy, and NMR (NMR) spectroscopy, and deduce the unknown component of their experiment An example MOE for the oxidation of alcs. is described herein. A traditional single-outcome experiment that utilized a common household oxidizing agent (hypochlorite bleach), rather than a heavy metal-containing alternative, was modified. For the MOE modification, one unknown secondary alc. (2-pentanol, 3-pentanol, or 3-methyl-2-butanol) was oxidized using bleach. Each student pair was assigned one of three possible unknown alcs., all of which were constitutional isomers of secondary alcs. Students knew the identities of the three possible alcs. Anal. of their oxidation products was accomplished using FTIR and benchtop 1H NMR spectroscopies. Students interpreted their spectra and deduced the identity of the unknown alc. they were assigned. This experiment provides a tangible framework to understand the applicability of the oxidation reaction and the utility of FTIR and 1H NMR spectroscopies.

Journal of Chemical Education published new progress about Gas chromatography Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 584-02-1 belongs to class alcohols-buliding-blocks, name is 3-Pentanol, and the molecular formula is C5H12O, SDS of cas: 584-02-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Bandini, Marco published the artcileAn effective and useful synthesis of enantiomerically enriched arylglycinols, Product Details of C8H9BrO2, the main research area is enantiomerically enriched arylglycinol preparation; amino alc chiral preparation.

A two-step synthesis of racemic arylglycinols, together with a simple and straightforward methodol. for their resolution, is described. This method constitutes a practical means of preparing racemic and optically pure electron-rich or electron-poor substituted arylglycinols, useful building blocks for the synthesis of biol. active mols. and chiral ligands. All of the chiral β-amino alcs. were isolated in good chem. yields and with excellent enantiomeric excesses. Chiral fluoroarom. vicinal amino alcs. can also be obtained with good enantiopurity using such a procedure. The key step of the strategy presented is an easy chromatog. separation of the diastereoisomeric amides prepared from acetyl mandeloyl chloride. The absolute configuration of the perfluorinated amino alcs. was determined by X-ray anal. of the corresponding amide.

European Journal of Organic Chemistry published new progress about. 92093-23-7 belongs to class alcohols-buliding-blocks, name is 1-(4-Bromophenyl)ethane-1,2-diol, and the molecular formula is C8H9BrO2, Product Details of C8H9BrO2.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Liu, Ying published the artcileEffects of freeze drying and hot-air drying on the physicochemical properties and bioactivities of polysaccharides from Lentinula edodes, Application In Synthesis of 59-23-4, the main research area is freeze hot air drying polysaccharide Lentinula edodes; Characterization; Drying; Immunomodulatory; Lentinula edodes; Polysaccharides.

Fresh Lentinula edodes were dried using two process technologies-freeze drying (FD) and hot-air drying (HD). The physicochem., antioxidant and immunomodulatory properties of purified polysaccharides from dried L. edodes (LEP) were then comparatively investigated. Two neutral polysaccharides (FLEP-1 and HLEP-1) and two acidic polysaccharides (FLEP-2 and HLEP-2) were obtained by DEAE-52 cellulose column. The HD treated LEP had higher levels of uronic acid than that of the FD treated LEP. The molar ratios of monosaccharides in FLEP-1, FLEP-2, HLEP-1 and HLEP-2 were different. Moreover, HD treated LEP had more galactose and less glucose. The (1 → 3)-α-glucan structure was dominant in the two neutral polysaccharides, whereas the (1 → 6)-β-glucan was dominant in the two acidic polysaccharides. Hot-air drying could thus promote the α-configuration in neutral polysaccharides while reducing the β-configuration in acidic polysaccharides. FLEP-1, FLEP-2, HLEP-1 and HLEP-2 had potential scavenging capacity against the ABTS·+, whereas freeze-dried polysaccharides exhibited a stronger scavenging ability than that of hot-air dried polysaccharide. LEP could improve immunity by inducing the secretions of NO, TNF-α and IL-6, whereas hot-air drying improved the immunomodulatory activity of LEP. Our results suggested that freeze drying and hot air drying could be appropriately used to obtain functional polysaccharides from L. edodes.

International Journal of Biological Macromolecules published new progress about Acidic polysaccharides Role: BSU (Biological Study, Unclassified), BIOL (Biological Study) (HLEP-2). 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, Application In Synthesis of 59-23-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gibka, J. published the artcileOdor characteristics of aliphatic metameric C-13 ketones, alcohols and their derivatives, Recommanded Product: 5-Tridecanol, the main research area is odor structure tridecanone alc acetal.

The odor of a series of tridecanones their derivatives was determined The relations between structure and odor in the whole family of the tridecanone derivatives were described. Pleasant notes accompanied fatty-type ketone odors, e.g., floral for tridecan-3-one, and fruity for tridecan-6-one. Alcs., however, were less interesting, all having only a faint or mild waxy odor. Acetates had stronger odors than the corresponding alcs. Acetals were the most interesting group of compounds They all had nutritive odors with different notes: fruity, spicy, herbaceous or floral, and low odor threshold (10-20 ppm). The derivatives of tridecan-6-one have odors with spicy and vegetable notes.

Perfumer & Flavorist published new progress about Aliphatic ketones Role: COS (Cosmetic Use), PRP (Properties), BIOL (Biological Study), USES (Uses). 58783-82-7 belongs to class alcohols-buliding-blocks, name is 5-Tridecanol, and the molecular formula is C13H28O, Recommanded Product: 5-Tridecanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhou, Cuiyan published the artcileMalate-aspartate shuttle plays an important role in LPS-induced neuroinflammation of mice due to its effect on STAT3 phosphorylation, Application of (S)-2-hydroxysuccinic acid, the main research area is malate aspartate shuttle STAT3 phosphorylation neuroinflammation; aminooxyacetic acid; malate-aspartate shuttle; neuroinflammation; pyruvate; stat3.

Neuroinflammation is a key pathol. factor in numerous neurol. disorders. Cumulating evidence has indicated critical roles of NAD+/NADH metabolism in multiple major diseases, while the role of malate-aspartate shuttle (MAS) – a major NADH shuttle – in inflammation has remained unclear. In this study we investigated the roles of MAS in LPS-induced neuroinflammation both in vivo and in vitro. Immunofluorescence staining, Western blot assay and Real-time PCR assays were conducted to determine the activation of Iba-1, the protein levels of iNOS and COX2 and the mRNA levels of IL-1β, IL-6, and TNF-α in vivo, showing that both pre-treatment and post-treatment of aminooxyacetic acid (AOAA) – an MAS inhibitor – profoundly decreased the LPS-induced neuroinflammation in mice. BV2 microglia was also used as a cellular model to investigate the mechanisms of this finding, in which such assays as Western blot assay and nitrite assay. Our study further indicated that AOAA produced its effects on LPS-induced microglial activation by its effects on MAS: Pyruvate treatment reversed the effects of AOAA on the cytosolic NAD+/NADH ratio, which also restored the LPS-induced activation of the AOAA-treated microglia. Moreover, the lactate dehydrogenase (LDH) inhibitor GSK2837808A blocked the effects of pyruvate on the AOAA-produced decreases in both the cytosolic NAD+/NADH ratio and LPS-induced microglial activation. Our study has further suggested that AOAA produced inhibition of LPS-induced microglial activation at least partially by decreasing STAT3 phosphorylation. Collectively, our findings have indicated AOAA as a new and effective drug for inhibiting LPS-induced neuroinflammation. Our study has also indicated that MAS is a novel mediator of LPS-induced neuroinflammation due to its capacity to modulate LPS-induced STAT3 phosphorylation, which has further highlighted a critical role of NAD+/ NADH metabolism in inflammation.

Frontiers in Molecular Biosciences published new progress about Brain dentate gyrus. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Application of (S)-2-hydroxysuccinic acid.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

John, Gerald F. published the artcileEnhanced effectiveness of oil dispersants in destabilizing water-in-oil emulsions, SDS of cas: 111-87-5, the main research area is water oil emulsion stability dispersant.

Oil impacting the northern Gulf of Mexico shoreline from the 2010 Deepwater Horizon accident was predominantly in the form of water-in-oil emulsions (WOE), a chem. weathered, highly viscous, neutrally buoyant material. Once formed, WOE are extremely difficult to destabilize. Com.-available oil dispersants are largely ineffective de-emulsifiers as a result of the inability of dispersant surfactants to displace asphaltenes stabilizing the oil-water interface. This study investigated the effectiveness of the com.-available dispersant Corexit 9500A, modified to enhance its polar fraction, in destabilizing WOE. Results suggest that Corexit modified to include between 20-60% fractional amount of either polar additive (1-octanol or hexylamine) will produce a modest increase in WOE instability, with a Corexit to hexylamine ratio of approx. 80/20 providing the most effective enhanced destabilization. Results support the hypothesis that modifying the fraction of polar constituents in com. dispersants will increase asphaltene solubility, decrease oil-water interface stability, and enhance WOE instability.

PLoS One published new progress about Coalescence. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Xingguo published the artcileHighly selective membrane for efficient separation of environmental determinands: Enhanced molecular imprinting in polydopamine-embedded porous sleeve, SDS of cas: 7575-23-7, the main research area is polydopamine embedded molecularly imprinted membrane selective separation environmental.

The molecularly imprinted membrane has shown irreplaceable superiority in advanced water treatment, biochem. purification, and in most cases, pretreatment of environmental determinands. However, effective and controllable construction of imprinted sites in membrane-based interpenetrating pores is as yet the significant bottleneck. Herein, the authors proposed a thermally induced strategy on the polydopamine-embedded molecularly imprinted membrane (DEMIM) for enhanced selective separation of Ciprofloxacin (CIP). The porous sleeve was constructed with polyvinylidene fluoride (PVDF), together with the integrated β-cyclodextrin (β-CD) for hydrophilicity and anti-fouling requirements. Based on the thermally induced operation, polydopamine (PDA) embedded in the membrane matrix acted as a secondary reaction platform, effectively improving the interpenetrating-bicontinuous porous morphol. and enhancing the availability of imprinted sites in microchannels. The imprinting polymerization was carried out by the efficient thiol-ene click reaction, which was investigated in depth by d. functional theory (DFT) calculations The impressive relative separation factor (2.33-4.59) and permselectivity (9.50-12.50) indicated the superior availability of DEMIM for the selective separation The remarkable regeneration performance (fluctuation in 8.4%∼10.8%) demonstrated the feasibility of the porous membrane-based sleeve for regeneration of mol. imprinting. The approach and methodologies achieved in this work will potentially promote the development of novel molecularly imprinted membranes for advanced applications.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Density functional theory. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, SDS of cas: 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts