Tag: M.W=150-200

Hemmati, Saba; Hekmati, Malak; Salamat, Delafarin; Yousefi, Mohammad; Karmakar, Bikash; Veisi, Hojat published the artcile< Anchoring Mn(IV) in multi pyridine modified mesoporous silica SBA-15: An efficient nanocatalyst for selective oxidation of sulfides to sulfoxides>, Application In Synthesis of 699-12-7, the main research area is manganese melamine pyridine functionalized silica catalyst oxidation sulfide sulfoxide.

In this current study we report the implementation of Mn(IV) grafted multipyridine linked melanine functionalized SBA-15/CCPy/Mn(OAc)2 as a novel high surface area nanocatalyst. The melamine linked multipyridine ligand was introduced over mesoporous SBA-15 to ensure the strong chelation of Mn(OAc)2 in order to deploy as active site. The structural features of the so designed material were properly analyzed with SEM, TEM, EDX, ICP-AES and N2 adsorption-desorption isotherm techniques. Catalytic behavior of the nanocomposite was investigated in the chemoselective oxidation of sulfides to sulfoxides using H2O2 as a mild oxidant under solvent-free conditions at room temperature resulting very good yields. The catalyst was reused up to 8 consecutive cycles without significant leaching and reduced catalytic performance.

Polyhedron published new progress about Energy-dispersive x-ray spectra. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Application In Synthesis of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rozi, Parhat; Abuduwaili, Aytursun; Mutailifu, Paiheerding; Gao, Yanhua; Rakhmanberdieva, Rano; Aisa, Haji Akber; Yili, Abulimiti published the artcile< Sequential extraction, characterization and antioxidant activity of polysaccharides from Fritillaria pallidiflora Schrenk>, Safety of (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Fritillaria polysaccharide extraction antioxidant activity property; Antioxidant activity; Characterization; Fritillaria pallidiflora schrenk; Polysaccharide.

In this paper, Fritillaria pallidiflora schrenk polysaccharides were extracted with different methods and isolated by anion-exchange and gel-permeation chromatog. Physicochem. properties, structural characteristics and antioxidant activities were investigated for the first time. The polysaccharides composed of glucose, galactose, arabinose, xylose, mannose and rhamnose with different molar ratio and mol. weight Fourier transform IR spectroscopy and NMR anal. exhibited the presence of key functional groups of polysaccharides whereas SEM anal. revealed the characteristic morphol. of different fractions. The thermogravimetric anal. manifested the thermal stability of polysaccharides. The reducing power and antioxidant activities of polysaccharides were evaluated in vitro. Among them, the acidic fraction FPSP-H2-1 has a strong antioxidant effect against DPPH, hydroxyl and ABTS free radicals. The results revealed the polysaccharide’s important role as potential natural antioxidant agents during the investigation and application of bioactive polysaccharide.

International Journal of Biological Macromolecules published new progress about Anion exchange. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Safety of (2S,3S,4R,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vega-Rojas, Lineth Juliana; Luzardo-Ocampo, Ivan; Mosqueda, Juan; Palmerin-Carreno, Dulce Maria; Escobedo-Reyes, Antonio; Blanco-Labra, Alejandro; Escobar-Garcia, Konisgmar; Garcia-Gasca, Teresa published the artcile< Bioaccessibility and in vitro intestinal permeability of a recombinant lectin from Tepary bean (Phaseolus acutifolius) using the everted intestine assay>, SDS of cas: 492-62-6, the main research area is Phaseolus acutifolius lectin tepary bean intestinal permeability bioaccessibility; Tepary bean (Phaseolus acutifolius); apparent permeability; bioaccessibility; ex vivo everted intestine assay; in vitro and ex vivo gastrointestinal digestion; recombinant lectin.

Tepary bean (Phaseolus acutifolius) lectins exhibit differential in vitro and in vivo biol. effects, but their gastrointestinal interactions and digestion have not yet been assessed. This work aimed to evaluate the changes of a recombinant Tepary bean lectin (rTBL-1) through an in vitro and ex vivo gastrointestinal process. A polyclonal antibody was developed to selectively detect rTBL-1 by Western blot (WB) and immunohistochem. anal. Everted gut sac viability was confirmed until 60 min, where protein bioaccessibility, apparent permeability coefficient, and efflux ratio showed rTBL-1 partial digestion and absorption. Immunoblot assays suggested rTBL-1 internalization, since the lectin was detected in the digestible fraction. The immunohistochem. assay detected rTBL-1 presence at the apical side of the small intestine, potentially due to the interaction with the intestinal cell membrane. The in silico interactions between rTBL-1 and some saccharides or derivatives showed high binding affinity to sialic acid (-6.70 kcal/mol) and N-acetylglucosamine (-6.10 kcal/mol). The ultra-high-performance liquid chromatog.-electron spray ionization-quant. time-of-flight coupled to mass spectrometry (UHPLC-ESI-QTOF/MS) anal. showed rTBL-1 presence in the gastric content and the non-digestible fraction after intestinal simulation conditions. The results indicated that rTBL-1 partially resisted the digestive conditions and interacted with the intestinal membrane, whereas its digestion allowed the absorption or internalization of the protein or the derivative peptides. Further purification of digestion samples should be conducted to identify intact rTBL-1 protein and digested peptides to assess their physiol. effects.

International Journal of Molecular Sciences published new progress about Absorption. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, SDS of cas: 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chen, Lin; Zhao, Xue; Wu, Ji’en; He, Yun; Yang, Hongshun published the artcile< Metabolic analysis of salicylic acid-induced chilling tolerance of banana using NMR>, Related Products of 492-62-6, the main research area is banana salicylic acid metabolic analysis; Cold injury; Energy status; Fruit; Metabolomics; Omics; Pathway; Principal component analysis; Salicylic acid.

Banana is highly susceptible to low temperature and salicylic acid (SA) can effectively improve the chilling tolerance. The metabolic changes of SA induced chilling responses of banana were studied. Bananas normally ripened under 15°C and dramatic metabolic difference compared with other groups was recorded. Accumulation of glucose (>1.5 folds) and consumption of unsaturated fatty acids (11.0-16.5%) were observed The glycolysis was induced to compensate the decreased energy charge. Low temperature (6°C) caused chilling damage and metabolites including glutamine, serine, and glucose were related to chilled bananas. Various physiol. changes such as sugar metabolism and consumption of reducing substances occurred to adapt the cold stress. SA released the cold injury and the disaccharides were increased by 18.1-21.4%. Further anal. revealed the synthesis of unsaturated fatty acids, amino acids such as proline, and enhanced energy charge. Thus, SA increased the chilling tolerance via a number of different metabolic mechanisms.

Food Research International published new progress about Banana. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Related Products of 492-62-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhu, JianCai; Niu, Yunwei; Xiao, ZuoBing published the artcile< Characterization of the key aroma compounds in Laoshan green teas by application of odour activity value (OAV), gas chromatography-mass spectrometry-olfactometry (GC-MS-O) and comprehensive two-dimensional gas chromatography mass spectrometry (GC x GC-qMS)>, Electric Literature of 78-70-6, the main research area is nonanol decanal skatole furaneol Laoshan green tea aroma olfactometry; Characteristic aroma compound; Comprehensive two-dimensional gas chromatography mass spectrometry (GC × GC-qMS); Laoshan green tea; Odor activity value (OAV); S-curve.

To investigate the key aroma compounds in Laoshan green teas (Huangshan (S1), Changling (S2), and Fangling (S3)), gas chromatog.-mass spectrometry-olfactometry (GC-MS-O), a flame photometric detector (FPD), odor activity value (OAV), and comprehensive two-dimensional gas chromatog. mass spectrometry (GC x GC-qMS) were employed. A total of 50 aroma compounds were perceived and 24 compounds were identified as important compounds related to OAV, such as di-Me sulfide (OAV: 126-146), skatole (OAV: 27-50), furaneol (OAV: 8-27), (Z)-jasmone (OAV: 16-23), 2-methylbutanal (OAV: 15-22), and 3-methylbutanal (OAV: 68-87). Furthermore, the S-curve method was used to research the effect of aroma compounds on the threshold of aroma recombination (AR). The AR thresholds decreased from 3.8 mL to 0.45, 0.66, 0.93, 0.95, 0.75, 1.09, 3.01, and 2.57 mL after addition of eight compounds (skatole, furaneol, (Z)-jasmone, α-damascenone, sclareololide, dihydroactinidiolide, vanillin, and δ-valerolactone), indicating that those compounds (OAV >1) were contributors to the overall aroma of Laoshan teas.

Food Chemistry published new progress about Flame photometric detectors. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Electric Literature of 78-70-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Li, Hai-Lou; Lian, Chen; Yang, Guo-Yu published the artcile< {Ti6}/{Ti10} Wheel Cluster Substituted Silicotungstate Aggregates>, HPLC of Formula: 699-12-7, the main research area is titanium tungstosilicate wheel preparation thioether oxidation catalyst; crystal structure titanium tungstosilicate wheel cluster.

Two novel Ti-oxo wheel cluster substituted silicotungstates (STs) [H2NMe2]9H9[Ti6O6(SiW10O37)3]·11H2O (1) and [H2NMe2]16H10[Ti10O11(SiW10O37)2(SiW9O35)2]·14H2O (2) were made by hydrothermal reactions. The polyoxoanion of 1 is a ring-shaped trimer where a Ti6O6 ({Ti6}) wheel cluster is encapsulated by three divacant [SiW10O37]10- (SiW10O37) fragments. However, 2 is built by two divacant SiW10O37 units and two rare trivacant [SiW9O35]12- (SiW9O35) fragments and further installs an unprecedented Ti10O11 ({Ti10}) double-wheel cluster. To the best of the authors’ knowledge, 2 is rare in POM chem. Studies on the catalytic oxidation properties reveal that 1 exhibits high catalytic activity toward the oxidation of various sulfides using H2O2 as an oxidant. Also, 1 can be facilely recycled and reused for at least five cycles without obvious loss of catalytic activity.

Inorganic Chemistry published new progress about Cluster compounds Role: CAT (Catalyst Use), PRP (Properties), SPN (Synthetic Preparation), USES (Uses), PREP (Preparation). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, HPLC of Formula: 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ardakani, Mehdi Hatefi; Saeednia, Samira; Sabet, Mohammad published the artcile< Highly Efficient and Selective Oxidation of Sulfides to Sulfones with Hydrogen Peroxide Under Ultrasonic Irradiation Catalyzed by Copper(II) Schiff Base Complex Supported on Mesoporous MCM-41>, Recommanded Product: 2-(Phenylthio)ethanol, the main research area is sulfone sulfide selective oxidation hydrogen peroxide copper complex.

In this work, copper(II) Schiff base complex immobilized on functionalized mesoporous silica MCM-41 as a heterogeneous catalyst, MCM-41-pr-NH2-CuL, was successfully used to oxidize a range of sulfides with 30% hydrogen peroxide under ultrasonic irradiation The influence of different parameters namely solvent, catalyst amount, and kind of oxidant was investigated in order to find suitable reaction conditions. The obtained results demonstrated that this catalytic system was capable of catalyzing the selective oxidation of different sulfides to sulfones with 30% H2O2 under ultrasonic irradiation The related sulfones were acquired in good to excellent yields (67-98%) in this system. Furthermore, the results indicated that this work could be appropriate for chemo-selective oxidation of sulfides to sulfones in the presence of other functional groups. Simple filtration recovered this catalyst, and no significant loss in its catalytic activity and selectivity was observed after using for five times. Also, no critical alteration was recognized in the FT-IR spectrum of the recovered catalyst after using five times.

Silicon published new progress about Oxidation catalysts. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Recommanded Product: 2-(Phenylthio)ethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hirai, Mitsuhiro; Ajito, Satoshi; Iwasa, Tatsuo; Wen, Durige; Igarashi, Noriyuki; Shimizu, Nobutaka published the artcile< Short-Distance Intermolecular Correlations of Mono- and Disaccharides in Condensed Solutions: Bulky Character of Trehalose>, Formula: C6H12O6, the main research area is cryptobiosis trehalose disaccharide monosaccharide condensed solution structure WAXS.

Organisms with tolerance to extreme environmental conditions (cryptobiosis) such as desiccation and freezing are known to accumulate stress proteins and/or sugars. Trehalose, a disaccharide, has received considerable attention in the context of cryptobiosis. It has already been shown to have the highest glass-transition temperature and different hydration properties from other mono- and disaccharides. In spite of the importance of understanding cryptobiosis by exptl. clarifying sugar-sugar interactions such as the clustering in concentrated sugar solutions, there is little direct exptl. evidence of sugar solution structures formed by intermol. interactions and/or correlation. Using a wide-angle X-ray scattering method with the real-space resolution from ∼3 to 120 Å, we clarified the characteristics of the structures of sugar solutions (glucose, fructose, mannose, sucrose, and trehalose), over a wide concentration range of 0.05-0.65 g/mL. At low concentrations, the second virial coefficients obtained indicated the repulsive intermol. interactions for all sugars and also the differences among them depending on the type of sugar. In spite of the presence of such repulsive force, a short-range intermol. correlation was found to appear at high concentrations for every sugar. The concentration dependence of the observed scattering data and p(r) functions clearly showed that trehalose prefers a more disordered arrangement in solution compared to other sugars, i.e., bulky arrangement. The present findings will afford a new insight into the mol. mechanism of the protective functions of the sugars relevant to cryptobiosis, particularly that of trehalose.

ACS Omega published new progress about Adaptation (cryptobiosis). 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Formula: C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yuan, Biao; Han, Jiannan; Cheng, Yaolan; Cheng, Shujie; Huang, Dechun; McClements, David Julian; Cao, Chongjiang published the artcile< Identification and characterization of antioxidant and immune-stimulatory polysaccharides in flaxseed hull>, Related Products of 3458-28-4, the main research area is antioxidant polysaccharide flaxseed; Flaxseed; Immune-enhancing; MAPK; Polysaccharide.

Flaxseeds are widely consumed for their desirable sensory attributes and health benefits. We focused on enhancing the sustainability and economic potential of flaxseeds by characterizing functional attributes of polysaccharides isolated from flaxseed hull residues. In particular, antioxidant and immune-stimulatory polysaccharides were isolated and purified from flaxseed hull. IR spectroscopy was used to identify the key functional groups. The polysaccharides were composed of mannose, rhamnose, galactose, glucose, galactose, xylose, arabinose, and fucose. In vitro studies showed certain flaxseed hull polysaccharide fractions exhibited strong antioxidant activities, increased nitric oxide levels, and enhanced the production of cytokines (TNF-α and IL-6). In the presence of 200μg/mL of one of these fractions, the levels of p-ERK, p-JNK, and p-p38 increased significantly by 1.8-, 9.0-, and 6.7-fold. These polysaccharide fractions may exhibit their immune-regulatory properties partly by modulating the MAPK pathway. The flaxseed hull polysaccharides identified have potential application as natural antioxidants and immune-enhancing nutraceuticals.

Food Chemistry published new progress about Antioxidants. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Related Products of 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ai, Han-Jun; Yuan, Yang; Wu, Xiao-Feng published the artcile< Ruthenium pincer complex-catalyzed heterocycle compatible alkoxycarbonylation of alkyl iodides: substrate keeps the catalyst active>, Safety of 2-(Phenylthio)ethanol, the main research area is ester preparation; alkyl iodide alc carbon monoxide alkoxycarbonylation ruthenium pincer catalyst.

In this work, a pincer ruthenium pincer complex-catalyzed heterocycle compatible alkoxycarbonylation of alkyl iodides using alcs. and carbon monoxide to afford esters I [R = iPr, tBu, Ph, etc.; R1 = tBu, cyclopentyl, (CH2)3Ph, etc.] was reported. Benefitting from the pincer ligand, a variety of heterocycles, such as thiophenes, morpholine, unprotected indoles, pyrrole, pyridine, pyrimidine, furan, thiazole, pyrazole, benzothiadiazole, and triazole, were compatible in this protocol.

Chemical Science published new progress about Alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Safety of 2-(Phenylthio)ethanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts