Category: 134-96-3

Wei, Ya-Nan published the artcileStructural changes for lignin from Chinese quince during the sequential fractionation of cell wall polysaccharides, SDS of cas: 134-96-3, the publication is Process Biochemistry (Oxford, United Kingdom) (2022), 167-176, database is CAplus.

The crosslinking between lignin and cell wall polysaccharides is one of recalcitrance to extract pectin and hemicellulose. In this work, water-, chelator-, Na₂CO₃-soluble pectin (WSP, CSP, NSP) and alkali-soluble hemicellulose (ASH) were sequentially removed, milled wood lignins (WMWL, CMWL, NMWL and KMWL) were isolated from Chinese quince. Quant. chem. anal. techniques (e.g., HPAEC, FT-IR, GPC, Py-GC/MS, TG and 2D NMR) were used for characterizing the lignin fractions. Results indicate that there are tight linkages between arabinose and lignin. The mol. weight and thermal stability decreased as different types of pectin (WSP, CSP and NSP) were removed. Py-GC/MS and 2D NMR data showed that the major interunit β-O-4′ aryl ether bonds of lignin (61.07%-72.53%) and the S/G ratios (0.56-2.68) were changed. It was revealed that Chinese quince pectin and hemicellulose polysaccharides have more covalent crosslinks with S-type lignin from secondary wall S2 than G-type lignin. These results will contribute to realizing the mechanisms of cell wall polysaccharides isolation and be beneficial for the potential application of Chinese quince fruits in food and other industries.

Process Biochemistry (Oxford, United Kingdom) published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C10H14O, SDS of cas: 134-96-3.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Thao, Nguyen Phuong published the artcileCytotoxic metabolites from the leaves of the mangrove Rhizophora apiculata, Category: ethers-buliding-blocks, the publication is Phytochemistry Letters (2022), 51-55, database is CAplus.

One new 8,4-oxyneolignan (1) and one new 7,8-dihydrobenzofuranone (2), together with twenty-one known compounds (3-23) were isolated from the methanol extract of Rhizophora apiculata leaves. The structures of new compounds, as well as their absolute configuration, were determined by a combination of spectroscopic methods and quantum chem. calculations of NMR and ECD data. All isolated compounds were evaluated for their cytotoxicity, and only 2,6-dimethoxy-1,4-benzoquinone (8) exhibited inhibitory effects against SK-LU-1, HepG2, and MCF7 cells with IC50 values in the range of 8.33-14.82 μM.

Phytochemistry Letters published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C16H12O, Category: ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Liu, Chao published the artcileLignin-first biorefinery of corn stalk via zirconium(IV) chloride/sodium hydroxide-catalyzed aerobic oxidation to produce phenolic carbonyls, Category: ethers-buliding-blocks, the publication is Bioresource Technology (2022), 127183, database is CAplus and MEDLINE.

Lignin-first biorefinery of corn stalk via ZrCl₄/NaOH-catalyzed aerobic oxidation for phenolic carbonyls production was reported. Under the co-catalysis of ZrCl₄ and NaOH, lignin in corn stalk was oxidized into phenolic aldehydes (p-hydroxybenzaldehyde, vanillin, and syringaldehyde), ketones (p-hydroxyacetophenone, acetovanillone, and acetosyringone), acids (p-hydroxybenzoic acid and vanillic acid), and other derivatives Reaction conditions, including time, temperature, ZrCl₄ dosage, NaOH dosage, MeCN/H₂O ratio, and initial O₂ pressure were comprehensively screened, and the optimal lignin-derived monomer yields of 13.2 weight% was obtained. Among these aromatic compounds, phenolic aldehydes were the main products, and the overall selectivity of phenolic carbonyls was as high as 93%. Cellulose-rich residues after lignin-first oxidation were further characterized by thermogravimetry and anal. pyrolysis with corn stalk as the control, proving the good fragmentation and dissolution of lignin streams. In general, ZrCl₄/NaOH-catalyzed lignin-first oxidation provided a novel approach for lignin valorization, and achieved the highest reported phenolic carbonyls selectivity.

Bioresource Technology published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, Category: ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Wu, Haijun published the artcilePromoting the conversion of poplar to bio-oil based on the synergistic effect of alkaline hydrogen peroxide, Application of 4-Hydroxy-3,5-dimethoxybenzaldehyde, the publication is Renewable Energy (2022), 107-117, database is CAplus.

The synergistic catalysis effect of NaOH and H₂O₂ on the hydrothermal liquefaction (HTL) of poplar was investigated and compared to the NaOH or H₂O₂ catalyzed HTL at different temperatures and 30 min residence time. GC-MS, GPC, FT-IR, HPLC and TGA were used to comprehensively characterize the phys. and chem. properties of liquefied products (bio-oil, lignin and solid residue). The results showed that the highest total bio-oil yield (70.65%) was obtained at 280°C with NaOH (35 g/L)/H₂O₂ (30 g/L) as catalysts. The average mol. weight and polydispersity index (PDI) were found to be lower compared to that from other conditions. As the NaOH concentration was increased, the bio-oil yield was improved. The concentration of H₂O₂ for the optimal synergistic effect was observed to be 30 g/L. GC-MS anal. showed that the bio-oil obtained by NaOH (35 g/L)/H₂O₂ (30 g/L) was characterized with the lowest N content. The synergistic effect promoted the higher production selectivity of o-xylene and p-xylene in the bio-oil.

Renewable Energy published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C6H10O7, Application of 4-Hydroxy-3,5-dimethoxybenzaldehyde.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Cao, Maoyu published the artcileSeasonal variations and potential sources of biomass burning tracers in particulate matter in Nanjing aerosols during 2017-2018, Quality Control of 134-96-3, the publication is Chemosphere (2022), 303(Part_2), 135015, database is CAplus and MEDLINE.

Biomass burning (BB) is an important source of atm. particulate matter and can adversely affect air quality, visibility, human health, and climate change. To study the characteristics and potential source regions of BB tracers in PM2.5, a liquid chromatog.-mass spectrometry instrument (HPLC-MS/MS) is applied in this study to develop and validate a method to determine organic tracers of BB in 397 aerosol samples. The total mean concentrations of 17 tracers measured in 2017 and 2018 were 333.32 ng m-3 and 243.45 ng m-3, resp. Among them, the concentration of levoglucosan was the highest among all the tracers, with 325.63 ng m-3 in 2017 and 237.47 ng m-3 in 2018. The BB tracers showed obvious seasonal variations characteristics, most of which were abundant in winter. However, the concentrations of 3,4-dimethoxyacetic acid and sinapinic acid were higher in summer and spring than that in the other seasons. There were obvious differences in the Potential Source Contribution Factor (PSCF) model results of the BB’s potential source area annually and in different seasons. The results of the potential source anal. showed that Beijing-Tianjin-Hebei had a great impact on the Nanjing air quality in 2017. Finally, five source factors for BB were identified based on the Pos. Matrix Factor (PMF) model, and these were cellulose, hardwood, softwood, grass, and secondary formed. During the 2 years, cellulose was the largest contributor to biomass burning. Owing to the different fire conditions each year, the contribution of the five factors to the BB tracers was also different. For example, the contribution of softwood to the BB tracers was greater in 2018 (8.4%) than in 2017 (5.2%), while the contributions of hardwood and cellulose did not change significantly.

Chemosphere published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, Quality Control of 134-96-3.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Wei, Juan published the artcilePhenolic compositions and antioxidant activities of Hippophae tibetana and H. rhamnoides ssp. sinensis berries produced in Qinghai-Tibet Plateau, Computed Properties of 134-96-3, the publication is Food Chemistry: X (2022), 100397, database is CAplus.

Phenolic ingredients of Hippophae tibetana (Tib) and H. rhamnoides ssp. sinensis (Rha) berry from Qinghai-Tibet Plateau were identified by Ultra Performance Liquid Chromatog.-triple Quadrupole Tandem Mass Spectrometry. Results demonstrated that both of them possessed high levels of total phenolic and flavonoid, and compared to Tib, Rha berry exhibited higher contents. Moreover, flavonols was the most predominant subclass in Rha berry, flavonols and flavanols were the two most abundant subclasses in Tib berry. Among them, rutin and narcissin were present in the most abundant amounts in Rha berry, while (-)-epigallocatechin was the richest substance in Tib berry. Furthermore, both phenolic extracts of sea buckthorn berry exhibited strong in vitro and cellular antioxidant properties. Rha berry extract exhibited much stronger effects because of its higher levels of phenolic and flavonoid profiles. This finding proved that the Rha berry could serve as a food source for better health with great potential antioxidant activity.

Food Chemistry: X published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C7H16Cl2Si, Computed Properties of 134-96-3.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Ku, Conghao published the artcileOne-step construction of mesoporous cyano and sulfur co-modified carbon nitride for photocatalytic valorization of lignin to functionalized aromatics, COA of Formula: C9H10O4, the publication is Applied Surface Science (2022), 153266, database is CAplus.

Herein, mesoporous cyano and sulfur co-modified carbon nitride (MCSCN) is one-step constructed for the first time by a simple strategy using urea and trithiocyanuric acid as precursors. Trithiocyanuric acid can act as pore-fabricating units to form mesopores, meanwhile introduce cyano groups and sulfur atoms into carbon nitride. The constructed mesoporous structures effectively reduce the mass transfer resistance of macromol. lignin in the photocatalytic reaction process. The synergistic effect of the modified cyano groups and sulfur atoms significantly improves the photocatalytic valorization effect of waste lignin to functionalized aromatics As a representative of waste lignin, waste Camellia oleifera shell (WCOS) lignin can be efficently photocatalytic transformed to monophenolic compounds by MCSCN, and each gram of WCOS lignin can harvest 116.2 mg of functionalized aromatics, which is about 7 times higher than that by traditional g-C₃N₄ photocatalyst (16.7 mg/g).

Applied Surface Science published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, COA of Formula: C9H10O4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Liu, Zhizhou published the artcileThe danger of dichloromethane in the synthesis and application of imidazole-based dyes, Application In Synthesis of 134-96-3, the publication is Dyes and Pigments (2022), 110404, database is CAplus.

In this paper, a lophine-based phenol compound (I) has been prepared and identified as an efficient chromophore for the determination of hydrogen peroxide (H₂O₂) with enzymic method. A dry chem. analytic agent was also prepared involving this compound, showing good accuracy in the determination of uric acid. However, a commonly used solvent dichloromethane (DCM) could react with this imidazole derivative when the reaction mixture was irradiated under UV (365 nm). We explored the possible mechanism and identified several byproducts caused by the acidity and UV oxidation of DCM. Caution should be taken in the synthesis and application of such imidazole-based dyes in DCM, especially when phenol group was introduced to the imidazole moiety.

Dyes and Pigments published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, Application In Synthesis of 134-96-3.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Yakan, Hasan published the artcilePotential thiosemicarbazone-based enzyme inhibitors: Assessment of antiproliferative activity, metabolic enzyme inhibition properties, and molecular docking calculations, Product Details of C9H10O4, the publication is Journal of Biochemical and Molecular Toxicology (2022), 36(5), e23018, database is CAplus and MEDLINE.

A new series of thiosemicarbazone derivatives (1-11) were prepared from various aldehydes and isocyanates with high yields and practical methods. The structures of these compounds were elucidated by Fourier transform IR, ¹H-NMR (NMR), ¹³C-NMR spectroscopic methods and elemental anal. Cytotoxic effects of target compounds were determined by 2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide assay and compound 1 showed significant cytotoxic activity against both MCF-7 and MDA-MB-231 cells, with half-maximal inhibitory concentration values of 2.97 μM and 6.57 μM, resp. Moreover, in this study, the anticholinergic and antidiabetic potentials of these compounds were investigated. To this aim, the effect of the newly synthesized thiosemicarbazone derivatives on the activities of acetylcholinesterase (AChE) and αglycosidase (α-Gly) was evaluated spectrophotometrically. The title compounds demonstrated high inhibitory activities compared to standard inhibitors with K_i values in the range of 122.15-333.61 nM for α-Gly (K_i value for standard inhibitor = 75.48 nM), 1.93-12.36 nM for AChE (K_i value for standard inhibitor = 17.45 nM). Antiproliferative activity and enzyme inhibition at the mol. level were performed mol. docking studies for thiosemicarbazone derivatives 1M17, 5FI2, and 4EY6, 4J5T target proteins with protein data bank identification with (1-11) compounds were docked for anticancer and enzyme inhibition, resp.

Journal of Biochemical and Molecular Toxicology published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C10H15NS, Product Details of C9H10O4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Kubczak, Malgorzata published the artcileHippophae rhamnoides L. leaf and twig extracts as rich sources of nutrients and bioactive compounds with antioxidant activity, Quality Control of 134-96-3, the publication is Scientific Reports (2022), 12(1), 1095, database is CAplus and MEDLINE.

Plants have served for centuries as sources of compounds useful for human health such as antioxidant, anti-diabetic and antitumor agents. They are also rich in nutrients that improve the human diet. Growing demands for these compounds make it important to seek new sources for them. Hippophae rhamnoides L. is known as a plant with health-promoting properties. In this study we investigated the chem. composition and biol. properties of bioactive components of ethanol extracts from leaves and twigs of H. rhamnoides L. Chem. components such as the total content of phenolic compounds, vitamins and amino acids and the antioxidant activities of these compounds in cellular and cell-free systems were assessed. The results suggest that the studied extracts are rich in bioactive compounds with potent antioxidant properties. Cytotoxicity and hemotoxicity assays showed that the extracts had low toxicity on human cells over the range of concentrations tested. Interaction with human serum albumin was investigated and conformational changes were observed Our results indicate that leaf and twig extracts of H. rhamnoides L. should be considered as a non-toxic source of bioactive compounds which may be of interest to the food, pharmaceutical and cosmetic industries.

Scientific Reports published new progress about 134-96-3. 134-96-3 belongs to ethers-buliding-blocks, auxiliary class Immunology/Inflammation,COX,Natural product, name is 4-Hydroxy-3,5-dimethoxybenzaldehyde, and the molecular formula is C9H10O4, Quality Control of 134-96-3.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem