Month: November 2022

Highly Efficient Cleavage of Ether Bonds in Lignin Models by Transfer Hydrogenolysis over Dual-Functional Ruthenium/Montmorillonite was written by Xue, Zhimin;Yu, Haitao;He, Jing;Zhang, Yibin;Lan, Xue;Liu, Rundong;Zhang, Luyao;Mu, Tiancheng. And the article was included in ChemSusChem in 2020.Formula: C13H12O2 The following contents are mentioned in the article:

Cleavage of ether bonds is a crucial but challenging step for lignin valorization. To efficiently realize this transformation, the development of robust catalysts or catalytic systems is required. In this study, montmorillonite (MMT)-supported Ru (denoted as Ru/MMT) is fabricated as a dual-functional heterogeneous catalyst to cleave various types of ether bonds through transfer hydrogenolysis without using any addnl. acids or bases. The prepared Ru/MMT material is found to efficiently catalyze the cleavage of various lignin models and lignin-derived phenols; cyclohexanes (fuels) and cyclohexanols (key intermediates) are the main products. The synergistic effect between electron-enriched Ru and the acidic sites on MMT contributes to the excellent performance of Ru/MMT. Systematic studies reveal that the reaction proceeds through two possible reaction pathways, including the direct cleavage of ether bonds and the formation of intermediates with one hydrogenated benzene ring, for all examined types of ether bonds, namely, 4-O-5, α-O-4, and β-O-4. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Formula: C13H12O2).

4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Formula: C13H12O2

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Analytical strategies to determine the labelling accuracy and economically-motivated adulteration of “natural” dietary supplements in the marketplace: Turmeric case study was written by You, Hong;Gershon, Haley;Goren, Florencia;Xue, Fei;Kantowski, Traci;Monheit, Len. And the article was included in Food Chemistry in 2022.Name: Bisdemethoxycurcumin The following contents are mentioned in the article:

Turmeric has faced authenticity issues as instances of economic-adulterations to reduce the cost. We used carbon-14 and HPLC analyses as complementary methods to verify “all-natural” label claims of com. dietary supplements containing turmeric ingredients. A high percentage of curcumin-to-curcuminoids value was used as an indicator to imply the presence of synthetic curcumin. However, using the HPLC method alone did not provide direct evidence of curcuminoids natural origin, whereas using only the carbon-14 method cannot test for potency label claims and determine which constituent(s) contain 14C radiocarbon. By analyzing results from both methods, a significant correlation between the percentage of curcumin-to-curcuminoids and % biobased carbon (Pearson r = -0.875, p < 0.001) indicated that synthetic curcumin was greatly attributed to determined synthetic ingredients. Only four out of the 14 samples analyzed supported authentic label claims. This orthogonal testing strategy showed its potential for the quality control of turmeric products. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Name: Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Name: Bisdemethoxycurcumin

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Sensory descriptive and comprehensive GC-MS as suitable tools to characterize the effects of alternative procedures on wine aroma. Part II: BRS Rub́ea and BRS Cora was written by Bonatto Machado de Castilhos, Mauricio;Luiz Del Bianchi, Vanildo;Gomez-Alonso, Sergio;Garcia-Romero, Esteban;Hermosin-Gutierrez, Isidro. And the article was included in Food Chemistry in 2020.Product Details of 2380-78-1 The following contents are mentioned in the article:

The present manuscript assessed the volatile and sensory profiles of BRS Rub́ea and BRS Cora wines elaborated from traditional, grape pre-drying and submerged cap winemaking. The wines contained a higher concentration of acetates (257 mg L^-1 to 547 mg L^-1) and Et and Me esters (183 mg L^-1 to 456 mg L^-1) in comparison with Vitis vinifera wines. PCA was applied (explaining 68.43% of the total variance), and the higher concentration of Et decanoate and Et octanoate, di-Et succinate, hydroxylinalool, and 2-Ph ethanol was responsible for describing the BRS Rub́ea wines as fruity/foxy. They also presented an intense jam note, probably due to their higher concentration of syringol and guaiacol. BRS Cora wines exhibited a vegetal note, possibly due to their higher concentration of 1-hexanol and cis-3-hexenol. Wines from pre-dried grapes presented higher concentration of furfural, assuming a bitter/burned almond aroma. Alternative winemaking accounted for suitable changes in wine aroma, enhancing wine quality. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Product Details of 2380-78-1).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Product Details of 2380-78-1

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Combinatorial libraries of diamidopyridine-derived ‘tweezer’ receptors and sequence selective binding of peptides was written by Arienzo, Rosa;Kilburn, Jeremy D.. And the article was included in Tetrahedron in 2002.Related Products of 112-59-4 The following contents are mentioned in the article:

A library of diamidopyridine derived tweezer receptors with peptidic side-arms has been prepared Screening experiments with the library and a dye-labeled tripeptide L-Glu-L-Ser-L-Val-OH showed excellent selectivity (strong binding of the dye-labeled guest to ∼0.2% of resin-bound library members was observed) and led to the identification of a tweezer receptor structure, which was shown to bind the tripeptide with good selectivity over related tripeptide sequences. Analogous screening experiments with the side-chain protected tripeptide L-Glu(O^tBu)-L-Ser(^tBu)-L-Val-OH, showed little selectivity for any particular library member. The results are discussed in relation to previous screening experiments, using the same tripeptide guests, with related tweezer receptor libraries, which differ by one methylene in the separation of the diamidopyridine unit from the peptidic side-arms of the tweezer receptors. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Related Products of 112-59-4).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Related Products of 112-59-4

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Reproductive parasitism by worker honey bees suppressed by queens through regulation of worker mandibular secretions was written by Mumoki, Fiona N.;Pirk, Christian W. W.;Yusuf, Abdullahi A.;Crewe, Robin M.. And the article was included in Scientific Reports in 2018.Synthetic Route of C9H12O3 The following contents are mentioned in the article:

Social cohesion in social insect colonies can be achieved through the use of chem. signals whose production is caste-specific and regulated by social contexts. In honey bees, queen mandibular gland pheromones (QMP) maintain reproductive dominance by inhibiting ovary activation and production of queen-like mandibular gland signals in workers. We investigated whether honey bee queens can control reproductively active workers of the intraspecific social parasite Apis mellifera capensis, parasitising A. m. scutellata host colonies. Our results show that the queen’s QMP suppresses ovarian activation and inhibits the production of QMP pheromone signals by the parasitic workers, achieved through differential expression of enzymes involved in the biosynthesis of these pheromones at two points in the biosynthetic pathway. This is the first report showing that honey bee queens can regulate reproduction in intraspecific social parasites and deepens our understanding of the mol. mechanisms involved in the regulation of worker reproduction in social insects. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Synthetic Route of C9H12O3).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Synthetic Route of C9H12O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Synthesis of New Tyrosol-Based Phosphodiester Derivatives: Effect on Amyloid β Aggregation and Metal Chelation Ability was written by Romanucci, Valeria;Giordano, Maddalena;De Tommaso, Gaetano;Iuliano, Mauro;Bernini, Roberta;Clemente, Mariangela;Garcia-Vinuales, Sara;Milardi, Danilo;Zarrelli, Armando;Di Fabio, Giovanni. And the article was included in ChemMedChem in 2021.COA of Formula: C9H12O3 The following contents are mentioned in the article:

Alzheimer’s disease (AD) is a multifactorial pathol. that requires multifaceted agents able to address its peculiar nature. Increasing evidence has shown that aggregation of amyloid β (Aβ) and oxidative stress are strictly interconnected, and their modulation might have a pos. and synergic effect in contrasting AD-related impairments. Herein, a new and efficient fragment-based approach towards tyrosol phosphodiester derivatives (TPDs) has been developed starting from suitable tyrosol building blocks and exploiting the well-established phosphoramidite chem. The antioxidant activity of new TPDs has been tested as well as their ability to inhibit Aβ protein aggregation. In addition, their metal chelating ability has been evaluated as a possible strategy to develop new natural-based entities for the prevention or therapy of AD. Interestingly, TPDs containing a catechol moiety have demonstrated highly promising activity in inhibiting the aggregation of Aβ₄₀ and a strong ability to chelate biometals such as Cu^II and Zn^II. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1COA of Formula: C9H12O3).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.COA of Formula: C9H12O3

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Effects of post-harvest fungal infection of apples on chemical characteristics of cider was written by Simonato, Barbara;Lorenzini, Marilinda;Zapparoli, Giacomo. And the article was included in LWT–Food Science and Technology in 2021.Product Details of 2380-78-1 The following contents are mentioned in the article:

The impact of fungal post-harvest infection of apple on the chem. composition of cider was investigated through a comparative anal. of ciders obtained from apples (Gala variety) sep. infected by five fungal species (Alternaria alternata, Botrytis cinerea, Diplodia seriata, Monilinia fructigena, and Penicillium expansum) and cider from sound apples. The content of several flavor-active mols. belonging to different chem. groups, such as alcs., esters, acids, aldehydes, phenols, and lactones, significantly varied among ciders. Particularly, cider from sound apples had a higher concentration of Et ester acetate, fatty acid Et esters and fatty acids, mols. that contribute to fruity and sweet scent. Principal component anal. well discriminated ciders, evidencing species-specific fungal effect. Differences in precursor availability in juices and biosynthesis pathways in fungi could explain changes in aroma profile of ciders. This study provides information on the potential risk to produce cider from infected apples due to the possible quality depreciation. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Product Details of 2380-78-1).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Product Details of 2380-78-1

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Facile NMR approach for profiling curcuminoids present in turmeric was written by Praveen, Aishwarya;Prasad, Durga;Mishra, Soumya;Nagarajan, S.;Chaudhari, Sachin R.. And the article was included in Food Chemistry in 2021.Recommanded Product: Bisdemethoxycurcumin The following contents are mentioned in the article:

Curcumin, together with demethoxycurcumin and bisdemethoxycurcumin as a whole called curcuminoids, is an active phytochem. constituent present in the turmeric. When it comes to their anal., most will rely on UV-Visible spectroscopy, HPLC and LC-MS methods. Looking to improve productivity, time and simplicity, we are proposing a ¹H NMR based approach for curcuminoids anal. and its applications to different geog. regions. In the present work, sample preparation protocol is reported for the simultaneous determination of curcuminoids using ¹H NMR. For the quantification of curcuminoids, 6-7 ppm vinylic proton region in the ¹H NMR spectrum was used, where acetone was observed as the suitable solvent in terms of curcuminoids solubility and proper resolution of peak. The result shows that curcumin (46.8-59.50%) was major among all varieties, followed by DMC (22.15-27.70%) and BDMC (17.52-30.29%) except in Andhrapradesh variety, where BDMC (30.29%) was more than DMC (22.89%). These studies were further supported by HPLC anal. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0Recommanded Product: Bisdemethoxycurcumin).

Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Recommanded Product: Bisdemethoxycurcumin

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Hydrogen sulfide (H₂S) releasing capacity of isothiocyanates from Moringa oleifera Lam was written by Wang, Xiangshe;Liu, Yunjiao;Liu, Xingdi;Lin, Yi;Zheng, Xueqin;Lu, Yuyun. And the article was included in Molecules in 2018.Name: 2-(2-(Hexyloxy)ethoxy)ethanol The following contents are mentioned in the article:

Moringa oleifera Lam. is rich in phytochem. compounds especially glucosinolates (GSs) and isothiocyanates (ITCs), which are active compounds for cancer chemoprevention benefits of Brassicaceae vegetables. In this study, we determined the total contents of GSs and ITCs and their specific profiles in different Moringa tissues including seeds, stems, leaves and roots. Seeds (seeds with shell and seed kernel) showed significantly higher levels of total GSs and ITCs than that of other Moringa tissues. The hydrogen sulfide (H₂S) releasing capacity of total ITCs extracted from different Moringa tissues was determined by lead (II) acetate assay in 24-well plates. The H₂S releasing capacity of different Moringa tissues were evaluated and compared. Moringa seeds showed the highest H2S releasing capacity, followed by roots, leaves and stems. Our results suggest that Moringa based foods may exhibit health benefits due to its GSs and ITCs contents that are the precursors for H₂S, in addition to the recognized action mechanisms of ITCs. This study involved multiple reactions and reactants, such as 2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4Name: 2-(2-(Hexyloxy)ethoxy)ethanol).

2-(2-(Hexyloxy)ethoxy)ethanol (cas: 112-59-4) belongs to ethers. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Name: 2-(2-(Hexyloxy)ethoxy)ethanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Changes in chemical and sensory properties of Amarone wine produced by Penicillium infected grapes was written by Zapparoli, Giacomo;Lorenzini, Marilinda;Tosi, Emanuele;Azzolini, Michela;Slaghenaufi, Davide;Ugliano, Maurizio;Simonato, Barbara. And the article was included in Food Chemistry in 2018.Recommanded Product: 4-Hydroxy-3-methoxyphenethanol The following contents are mentioned in the article:

There is very little information on effects of Penicillium on aroma of passito wine. This study analyzed chem. composition and sensory properties of Amarone wines produced from withered grapes artificially contaminated by P. expansum or P. crustosum. Changes in properties of the two wines were evident by comparing wines obtained from healthy and Botrytis cinerea infected grapes used as controls. Penicillium infection affected primary and volatile composition of Amarone wine. Sensory profiles of these wines, obtained by descriptive anal., resulted in clear differences in the wines between themselves and the control wines. Partial least square regression anal. explained only partially the relationship between mols. and sensory descriptors, and showed the existence of complex interactions of compounds mainly involved in specific aroma attributes. GC-olfactive anal. showed a greater number of odor regions in P. crustosum wine compared to control wines. Useful insight was provided into understanding how Penicillium rotten grapes affect Amarone wine properties. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Recommanded Product: 4-Hydroxy-3-methoxyphenethanol).

4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Recommanded Product: 4-Hydroxy-3-methoxyphenethanol

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem