Tag: M.W=150-200

Jani, Muhammed Ali; Bahrami, Kiumars published the artcile< Synthesis of 5-substituted 1H-tetrazoles and oxidation of sulfides by using boehmite nanoparticles/nickel-curcumin as a robust and extremely efficient green nanocatalyst.>, Recommanded Product: 2-(Phenylthio)ethanol, the main research area is nickel anchored curcumin functionalized boehmite nanocatalyst preparation; benzonitrile sodium azide nickel catalyst cycloaddtion; tetrazole preparation green chem; sulfide nickel catalyst oxidation; sulfoxide preparation green chem.

Nickel-anchored curcumin-functionalized boehmite nanoparticles (BNPs@Cur-Ni)nanocatalyst was synthesized and well-characterized by using Fourier transform IR (FT-IR), transmission electron microscopy (TEM), SEM (SEM), energy dispersive X-ray (EDX), X-ray mapping, thermogravimetric anal. (TGA), DTA (DTA), Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), and inductively coupled plasma optical emission spectroscopy (ICP-OES). The synthesis of 5-substituted 1H-tetrazoles and the oxidation of sulfides were conducted by BNPs@Cur-Ni with excellent turnover number (TON) and turnover frequency (TOF) outcomes. Also, the catalyst was reused for several sequential runs without Ni leaching or decreasing in reaction yield. Utilizing the curcumin and boehmite with a natural source as well as poly(ethylene glycol) (PEG) as a solvent in this simple protocol can be based on green chem. rules.

Applied Organometallic Chemistry published new progress about Aromatic nitriles Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Chen, Guangjing; Li, Changfeng; Wang, Shasha; Mei, Xiaofei; Zhang, Hongxin; Kan, Jianquan published the artcile< Characterization of physicochemical properties and antioxidant activity of polysaccharides from shoot residues of bamboo (Chimonobambusa quadrangularis): Effect of drying procedures>, Electric Literature of 3458-28-4, the main research area is Chimonobambusa bamboo shoot residue antioxidant polysaccharide drying; Antioxidant activity; Bamboo shoots processing by-products; Chimonobambusa quadrangularis polysaccharides; Drying procedures; Physicochemical characterization.

In the present study, the bamboo shoot (Chimonobambusa quadrangularis) residue (BSR)-derived polysaccharides (CPS) were dried using different drying procedures, including hot air-, vacuum-, freeze-, and spray-drying. The influences of different drying procedures on the chem. compositions, physicochem. characteristics, and antioxidant activity of CPS were investigated. The results indicate that freeze-dried CPS possessed the highest polysaccharide yield (8.86%) and uronic acid content (9.42%), and the lowest medium-high mol. weight (117.49 kDa) and glucose content (5.81 mol%). Also, freeze-dried CPS had better water (5.17 g/g) and oil retention capacities (2.32 g/g) than hot air- and vacuum-dried CPS. Moreover, freeze-dried CPS exhibited the most potent antioxidant ability. Based on correlation anal., a higher uronic acid content, lower mol. weight and lower glucose content might be closely associated with the better antioxidant activity of the freeze-dried CPS. Hence, the above results revealed freeze-drying was the optimal method for industrial production of high quality CPS.

Food Chemistry published new progress about Air drying process (hot). 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Electric Literature of 3458-28-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Neiens, Silva D.; Steinhaus, Martin published the artcile< Investigations on the impact of the special flavor hop variety Huell Melon on the odor-active compounds in late hopped and dry hopped beers>, COA of Formula: C10H18O, the main research area is flavor hop Huell Melon odor beer; AEDA; Huell Melon; Humulus lupulus; SIDA; aroma extract dilution analysis; dry hopping; hops; late hopping; spiking experiment; stable isotope dilution assay; transfer rate.

Bottom-fermented and top-fermented beers, both either late or dry hopped with Huell Melon hops, and resp. reference beers without late or dry hopping were subjected to a comparative odorant screening by aroma extract dilution analyses. On the basis of differences in the FD factors, 14 odorants were identified as hop-derived. Among them were Et 2-methylpropanoate, Me 2-methylbutanoate, Et 2-methylbutanoate, Pr 2-methylbutanoate, myrcene, linalool, and geraniol. Differences between late hopped, dry hopped, and reference beers were substantiated by quantitation. Results showed minimal transfer of myrcene from hops into beer. Moderate transfer was observed for Pr 2-methylbutanoate, geraniol, and linalool. Process-induced changes of Et 2-methylpropanoate, Et 2-methylbutanoate, and Me 2-methylbutanoate were beyond a direct transfer from hops into beer, suggesting a formation from the corresponding hop-derived carboxylic acids by yeast. Spiking experiments revealed that linalool and Pr 2-methylbutanoate contributed particularly to the characteristic aroma of beers flavored with Huell Melon hops.

Journal of Agricultural and Food Chemistry published new progress about Beer. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, COA of Formula: C10H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lu, Yan; Xu, Lei; Cong, Yunzhe; Song, Ge; Han, Jun; Wang, Guodong; Zhang, Pengying; Chen, Kaoshan published the artcile< Structural characteristics and anticancer/antioxidant activities of a novel polysaccharide from Trichoderma kanganensis>, Application of C6H12O6, the main research area is Trichoderma kanganensis anticancer antioxidant polysaccharide structure; Anticancer activity; Antioxidant activity; Polysaccharide; Structural characteristics; Trichoderma kanganensis.

A novel water-soluble polysaccharide designated as TPS was isolated from the fermentation mycelia of Trichoderma kanganensis. TPS had a weight-average mol. mass of 3.074 × 105 Da, and the monosaccharide composition was consisted of Man (45.5%), GlcA (5.5%), Glc (10%), and Gal (39%). The major backbone of TPS was →6-α-D-Galp-1→5-β-D-Manf-1→5,6-β-D-Manf-1→5,6-β-D-Manf-1→, and the side chains are α-D-Glcp-1→4-α-D-Glcp-1→, β-D-Galf-1→, and α-D-Glcp-1→. In addition, we demonstrated that TPS was non-toxic in normal cells (LO2 cells) and inhibited the proliferation of mouse colon cells (CT26 cells). TPS also showed free radical scavenging activity against hydrogen peroxide. Overall, these results suggested that TPS from Trichoderma kanganensis may have potential application in biomedical fields.

Carbohydrate Polymers published new progress about Antitumor agents. 3458-28-4 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Application of C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Munoz-Gonzalez, Carolina; Feron, Gilles; Canon, Francis published the artcile< Physiological and oral parameters contribute prediction of retronasal aroma release in an elderly cohort>, Recommanded Product: 3,7-Dimethylocta-1,6-dien-3-ol, the main research area is Interindividual differences aroma release PTRMS Age BMI Saliva; Salivary antioxidant capacity Personalized nutrition; Age; BMI; In vivo aroma release; Interindividual differences; PTR-MS; Personalized nutrition; Saliva; Salivary antioxidant capacity.

Malnutrition is a serious problem in the elderly while understanding flavor perception could be a tool for controlling appetite or food choices. To increase our knowledge, we characterised the health and oral physiol. (oral volume, swallowing tongue force, number of teeth and salivary flow rate, protein content and antioxidant capacity) of a cohort of 54 community-dwelling French elderly as well as their individual retronasal release of five aroma compounds (2-pentanone, 2-nonanone, 2,3-hexanedione, octanal and linalool) by proton-transfer-reaction mass spectrometry (PTR-MS). In general, large variability across participants was observed in both oral physiol. (>40%) and retronasal aroma release (>56%) parameters. Multivariate analyses revealed a relationship between physiol. parameters (mostly salivary antioxidant capacity) and retronasal aroma release that explained up to 46% of the variability observed This study provides new insights to understand retronasal aroma release in the elderly that could contribute to the development of personalised nutrition strategies.

Food Chemistry published new progress about Homo sapiens. 78-70-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C10H18O, Recommanded Product: 3,7-Dimethylocta-1,6-dien-3-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Furusawa, Yuka; Nakamura, Hitoshi; Ashitani, Tatsuya published the artcile< Differences in the ""egumi"" taste of moso-bamboo shoots: research using chemical analysis and two types of taste sensors>, COA of Formula: C6H12O6, the main research area is Phyllostachys shoot oxalic acid fructose egumi taste.

We conducted our research with the aim of determining whether the “”egumi”” taste of moso-bamboo shoots differs depending on the production area and how the “”egumi”” taste of bamboo shoots from Yamagata Prefecture, which is near the northern limit of cultivation, differs. The investigation was conducted using conventional chem. anal. methods to quant. evaluate the presence and content of homogentisic acid and oxalic acid in bamboo shoots from different regions. In addition, qual. evaluation, for which chem. anal. alone is insufficient, was conducted using taste sensors, which have rarely been used. As a result, chem. anal. showed that homogentisic acid was not identified among the two substances considered to be major components of egumi taste, while oxalic acid was identified in all samples. Therefore, it is highly likely that oxalic acid is responsible for the “”egumi”” taste in this study. In addition, qual. anal. using taste sensors revealed that there is a difference in “”egumi”” taste depending on the origin of the bamboo shoot. It was suggested that bamboo shoots from Yamagata Prefecture, near the northern limit of cultivation, had a stronger “”egumi”” taste than those from Kyoto and Fukuoka Prefectures.

Journal of Wood Science published new progress about Astringency. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, COA of Formula: C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Li, Hai-Lou; Lian, Chen; Yin, Da-Peng; Yang, Guo-Yu published the artcile< Three Zr(IV)-Substituted Polyoxotungstate Aggregates: Structural Transformation from Tungstoantimonate to Tungstophosphate Induced by pH>, Computed Properties of 699-12-7, the main research area is zirconium antimony polyoxotungstate complex preparation oxidation catalyst thermal stability; crystal structure zirconium antimony polyoxotungstate complex.

Three novel Zr-substituted polyoxotungstate aggregates [H2N(CH3)2]7NaH2[Zr2Sb2O3(A-α-PW9O34)2]·16H2O (1), [H2N(CH3)2]6H12[ZrSb4(OH)O2(A-α-PW8O32)(A-α-PW9O34)]2·33H2O (2), and [H2N(CH3)2]4Na11.5H4.5[Zr4W8Sb4P5O49(OH)5(B-α-SbW9O33)2]·53H2O (3) have been made in hydrothermal reactions of the [B-α-SbW9O33]9- precursor with Zr4+ cations and PO43- anions in the presence of dimethylamine hydrochloride and sodium acetate buffer (pH = 4.8) and structurally characterized. Different pH values induce structural transformation from tungstoantimonate (TA) to tungstophosphate (TP). 1 Is a di-Zr-substituted sandwich-type TP, the tetranuclear heterometallic [Zr2Sb2O3]8+ entity sandwiched by two [A-α-PW9O34]9- moieties. 2 Is a double sandwich-type structure, which can be perceived as two equivalent sandwiched [Sb3(PW8O32)(PW9O34)]11- further sandwiching one [Sb2Zr2(OH)2O4]4+ core to form a novel large-size sandwich-type architecture. Different from 1 and 2, 3 is a tetra-Zr-substituted sandwiched configuration, in which two [B-α-SbW9O33]9- fragments sandwich a unique 21-core Sb-P-W-Zr oxo cluster ({Zr4W8Sb4P5}). Furthermore, the catalytic oxidation of aromatic thioethers by 3 as the heterogeneous catalyst has been investigated, showing high conversion and remarkable selectivity as well as excellent recyclability.

Inorganic Chemistry published new progress about Crystal structure. 699-12-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H10OS, Computed Properties of 699-12-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Boruah, Tribani; Das, Sabuj Kanti; Kumar, Greesh; Mondal, Saptarsi; Dey, Ramendra Sundar published the artcile< Dual active sites in a triazine-based covalent organic polymeric framework promoting oxygen reduction reaction>, COA of Formula: C8H6O5, the main research area is triazine covalent organic polymeric framework oxygen reduction reaction.

A new significant feature of a triazine-based covalent organic polymer electrocatalyst is demonstrated. The metal-free electrocatalyst has dual-active sites, which enable it to entangle oxygen via a push-pull interaction that plays a crucial role in promoting the oxygen reduction reaction.

Chemical Communications (Cambridge, United Kingdom) published new progress about Crystallinity. 4396-13-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H6O5, COA of Formula: C8H6O5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Saraf, Isha; Marsh, Karen J.; Kumar, Vineet; Foley, William J.; Singh, Inder Pal published the artcile< Comparative qualitative analysis of different classes of compounds in selected Australian and Indian Eucalyptus and Corymbia species: a convenient de-replication method for the eucalypts>, Category: alcohols-buliding-blocks, the main research area is Australian Indian eucalyptus corymbia flavonoid glycoside triterpenoid phloroglucinol; high performance thin layer chromatog dereplication qual analysis.

Eucalypts are a large group of woody trees with about 900 taxa in 3 genera: Eucalyptus, Corymbia and Angophora. The secondary metabolites of eucalypts have shown a plethora of biol. activities. The chem. behind the activities of eucalypts is being unearthed with advancements in modern medicine and drugstore. This has demanded the phytochem. profiling of eucalypts with respect to their bioactive constituents. A large number of secondary metabolites (flavonoids, glycosides, triterpenoids, phloroglucinols) from several species of eucalypts have been earlier isolated by our group. In order to develop quick identification of secondary metabolites from eucalypts for de-replication purposes, we thought it worthwhile to develop qual. HPTLC methods for these compounds in 15 eucalypts (13 Eucalyptus and 2 Corymbia) collected from Australia and India. High-performance thin-layer chromatog. fingerprints using 87 compounds of the above chem. classes of natural products were developed for the quality assessment of eucalypts.

Journal of Planar Chromatography–Modern TLC published new progress about Angophora. 4396-13-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H6O5, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Mumcu, Akin published the artcile< A simple and feasible method for the quantification of metabolites in the human follicular fluid using 1H HR-MAS NMR spectroscopy>, Category: alcohols-buliding-blocks, the main research area is metabolite follicular fluid magic angle spinning spectroscopy.

This study presents a reliable method for the quantification of metabolite concentrations in follicular fluid with the high-resolution magic angle spinning NMR (HRMAS NMR) spectroscopy and the ERETIC2 (Electronic Reference To access In vivo Concentrations) based on PULCON (pulse length based concentration determination) principle. The pos. effect of the HR-MAS probe technol. on spectral quality and its ability to perform analyses with very low sample amounts were the most important factors of proposing this method. In evaluating the performance of the proposed method, standard creatine solutions in different concentrations containing DSS (2,2-dimethyl-2-silapentane-5-sulfonate sodium salt) as an internal reference standard were analyzed using different pulse programs (cpmgpr1d and zg30). The results obtained with the ERETIC2 were compared with the classical internal standard NMR quantification method (DSS method). The relative standard deviation (RSD) values for ERETIC2 were in the range of 0.3% – 5.7% and recovery values were calculated as min. 90.3%, while RSD values for DSS method were in the range of 0.1% – 3.1% and recovery values were min. 97.0%. Besides, it was observed that the metabolite concentration values calculated using the ERETIC2 procedure of follicular fluid samples obtained from the women with endometriosis and healthy controls were compatible with the values those obtained using different methodologies. The obtained results showed that the proposed quantification method based on the HR-MAS spectroscopy can easily be used in biol. fluids and therefore it can be utilized as a good alternative to the internal standard method considering its accuracy and precision.

Journal of the Turkish Chemical Society, Section A: Chemistry published new progress about Endometriosis. 492-62-6 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H12O6, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts