Month: February 2023

A Nanostructured Moisture-Absorbing Gel for Fast and Large-Scale Passive Dehumidification was written by Dai, Ming;Zhao, Fei;Fan, Juanjuan;Li, Qing;Yang, Ya;Fan, Zhuangjun;Ling, Shengjie;Yu, Haipeng;Liu, Shouxin;Li, Jian;Chen, Wenshuai;Yu, Guihua. And the article was included in Advanced Materials (Weinheim, Germany) in 2022.Recommanded Product: 111-46-6 This article mentions the following:

Dehumidification is significant for environmental sustainability and human health. Traditional dehumidification methods involve significant energy consumption and have neg. impact on the environment. The core challenge is to expose hygroscopic surfaces to the air, and appropriately store the captured water and avoid surface inactivation. Here, a nanostructured moisture-absorbing gel (N-MAG) for passive dehumidification, which consists of a hydrophilic nanocellulose network functionalized by hygroscopic lithium chloride, is reported. The interconnected nanocellulose can transfer the captured water to the internal space of the bulky N-MAG, eliminating water accumulation near the surfaces and hence enabling high-rate moisture absorption. The N-MAG can reduce the relative humidity from 96.7% to 28.7% in 6 h, even if the space is over 2 × 10⁴ times of its own volume The condensed water can be completely confined in the N-MAG, overcoming the problem of environmental pollution. This research brings a new perspective for sustainable humidity management without energy consumption and with pos. environmental footprint. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Recommanded Product: 111-46-6).

2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Recommanded Product: 111-46-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

The presence of kiwifruit columella affects the aroma profiles of fresh and thermally treated kiwifruit juice was written by Xu, Sujuan;Zhan, Ping;Tian, Honglei;Wang, Peng. And the article was included in LWT–Food Science and Technology in 2022.Recommanded Product: 3391-86-4 This article mentions the following:

The aroma-active compounds in the whole fruit, pulp, and columella of fresh and thermally treated kiwifruit from three varieties (CX), (HW), and (XX) were analyzed. Major aroma-active C6 alcs. and aldehydes were abundant in the pulp, while key esters were predominant in the columella. Quant. descriptive anal. (QDA) indicated that the heating of pulp caused large changes in the fruity and sweet notes, while the intensities of grassy, pungent, and cooked cabbage notes in thermally treated whole kiwifruit (TW) were considerably stronger than thermally treated pulp (TP). Based on GC-MS/O and OAV, 17 odor-active compounds were identified. TP had substantial reductions in key alcs. and aldehydes, and the presence of columella attenuated the heat losses in characteristic esters. Decanal, (E)-2-decenal, 1-octen-3-one, and di-Me sulfide, formed during heating, were pos. correlated with the cooked cabbage odor by partial least-squares regression (PLSR). Hierarchical cluster anal. (HCA) revealed that aroma profiles of TP in CX and HW were similar to fresh samples, suggesting that the columella indeed affected the aroma profile during thermal treatment, especially for CX and HW. Altogether, these results could offer recommendations for kiwifruit juice processing to improve the aroma quality of juice products by changing the content of columella. In the experiment, the researchers used many compounds, for example, Oct-1-en-3-ol (cas: 3391-86-4Recommanded Product: 3391-86-4).

Oct-1-en-3-ol (cas: 3391-86-4) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Recommanded Product: 3391-86-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Co-winemaking with Vitis amurensis Rupr. “Beibinghong” enhances the quality of Vitis vinifera L. cv. Cabernet Gernischt wine was written by Song, Jianqiang;Zhang, Ang;Cheng, Shiwei;Li, Xiuwei;Zhang, Yuxiang;Luan, Liying;Qu, Huige;Ruan, Shili;Li, Jiming. And the article was included in Journal of Food Science.SDS of cas: 10083-24-6 This article mentions the following:

In some wine regions of China, Cabernet Gernischt (CG; Vitis vinifera L.) grape berries usually exhibit low pigment content and titratable acidity, and low sensory quality of the resulting wine. The aim of this study was to evaluate co-winemaking of CG wines using the red grape cultivar Beibinghong (BBH; Vitis amurensis Rupr.) at different proportions in terms of alcs., phenolic compounds, and sensory properties of the wines. The results showed that the co-winemaking wines contained a similar content of higher alcs., whereas the methanol content increased with an increase in BBH proportion, although this was still corresponded with the national standard Significantly higher levels of titratable acidity were observed in co-winemaking wines at the ratio of 6:4 and 5:5, compared with monocultivar CG wines. All co-winemaking wines, except CG:BBH (9:1) wine, showed significantly higher levels of total anthocyanins, total phenolics, total tannins, and total flavan-3-ols. Further, individual phenolics, primarily diglucoside anthocyanins and non-anthocyanins (trans-ferulic acid, myricetin, viniferin, trans-caffeic acid, 3,4-dihydroxybenzoic acid), as important contributors to wine color intensity, permitted the differentiation of the wines via principal component anal. In most cases, co-winemaking wines exhibited higher scores of the 10 sensory attributes on color, aroma, mouthfeel, and overall quality compared with monocultivar wines. Co-winemaking CG wines with BBH at 7:3 ratio demonstrated the highest scores of color intensity, aroma intensity, aroma quality, and overall quality. The results indicate that co-winemaking with V. amurensis grape variety may be useful to enhance V. vinifera wine quality by modifying wine composition Practical Application : Cabernet Gernischt (CG) is the predominant grape cultivar used to prepare premium-quality wine in China; however, in some wine regions, CG wines have low levels of pigment and titratable acidity, and low sensory quality. Co-winemaking with another native grape cultivar, Beibinghong (BBH), which is characterized by a higher content of anthocyanins and acidity, provided sufficient exptl. evidence of adjustments in the Vitis vinifera wine composition leading to improved wine sensory quality. In the experiment, the researchers used many compounds, for example, (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6SDS of cas: 10083-24-6).

(E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.SDS of cas: 10083-24-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

A copper(II)-dipicolylamine-coumarin sensor for maltosyltransferase assay was written by Lee, Wei-Li;Hsu, Tse-Wei;Hung, Wei-Cheng;Fang, Jim-Min. And the article was included in Dalton Transactions in 2019.Recommanded Product: 1122-71-0 This article mentions the following:

A Cu(II)-[di(2-methylpyridyl)methylamino]coumarin fluorescence turn-on sensor (Cu-1b) is designed to detect phosphate ions with K_ass = 1.4 × 10⁵ M^-1 in HEPES buffer. Cu-1b is applied to probe the GlgE-catalyzed maltose-transfer reaction of α-maltose-1-phosphate to α-1,4-glucan with concomitant release of phosphate ions in Mycobacterium tuberculosis. In the experiment, the researchers used many compounds, for example, 6-Methyl-2-pyridinemethanol (cas: 1122-71-0Recommanded Product: 1122-71-0).

6-Methyl-2-pyridinemethanol (cas: 1122-71-0) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Recommanded Product: 1122-71-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Design and synthesis of marine sesterterpene analogues as novel estrogen receptor α degraders for breast cancer treatment was written by Liang, Jian-Jia;Yu, Wu-Lin;Yang, Liang;Xie, Bao-Hua;Qin, Kong-Ming;Yin, Yu-Ping;Yan, Jing-Jing;Gong, Shuang;Liu, Ten-Yue;Zhou, Hai-Bing;Hong, Kui. And the article was included in European Journal of Medicinal Chemistry in 2022.Formula: C4H10O3 This article mentions the following:

Targeted protein degradation using small mols. is an intriguing strategy for drug development. The marine sesterterpene compound MHO7 had been reported to be a potential ERα degradation agent. In order to further improve its biol. activity, two series of novel MHO7 derivatives with long side chains were designed and identified as novel selective estrogen receptor down-regulators (SERDs). The growth inhibition activity of the novel SERD compounds were significantly affected by the type and length of the side chain. Most of the derivatives were significantly more potent than MHO7 against both drug-sensitive and drug-resistant breast cancer cells. Among them, compound 16a (I), with IC₅₀ values of 0.41μM against MCF-7 cell lines and 9.6-fold stronger than MHO7, was the most potent mol. A whole-genome transcriptomic anal. of MCF-7 cells revealed that the mechanism of 16a against MCF-7 cell was similar with that of MHO7. The estrogen signaling pathway was the most affected among the disturbed genes, but the ERα degradation activity of 16a was observed higher than that of MHO7. Other effects of 16a were confirmed similar with MHO7, which means that the basic mechanisms of the derivatives are the same with the ophiobolin backbone, i.e. the degradation of ERα is mediated via proteasome-mediated process, the induction of apoptosis and the cell cycle arrest at the G1 phase. Meanwhile, a decrease of mitochondrial membrane potential and an increase of cellular ROS were also detected. Based on these results, as a novel modified ophiobolin derived compound, 16a may warrant further exploitation as a promising SERD candidate agent for the treatment of breast cancer. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Formula: C4H10O3).

2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Converting an alcohol to an alkene requires removal of the hydroxyl group and a hydrogen atom on the neighbouring carbon atom. Dehydrations are most commonly carried out by warming the alcohol in the presence of a strong dehydrating acid, such as concentrated sulfuric acid.Formula: C4H10O3

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Efficient aerial oxidation of different types of alcohols using ZnO nanoparticle-MnCO₃-graphene oxide composites was written by Adil, Syed Farooq;Assal, Mohamed E.;Shaik, Mohammed Rafi;Kuniyil, Mufsir;Hashmi, Azhar;Khan, Mujeeb;Khan, Aslam;Tahir, Muhammad Nawaz;Al-Warthan, Abdulrahman;Siddiqui, Mohammed Rafiq H.. And the article was included in Applied Organometallic Chemistry in 2020.Formula: C7H6Cl2O This article mentions the following:

In this study, nanocomposites of graphene oxide (GRO) and ZnO nanoparticle-doped MnCO₃ ([ZnO-MnCO₃/(1%)GRO]) were synthesized via a facile, straightforward co-precipitation technique. Interestingly, it was noticed that the incorporation of GRO in the catalytic system could noticeably improve the catalytic efficiency compared to a catalyst (ZnO-MnCO₃) without GRO, for aerial oxidation of benzyl alc. (BzOH) employing O₂ as a nature-friendly oxidant under base-free conditions. The impacts of various reaction factors were thoroughly explored to optimize reaction conditions using oxidation of BzOH to benzaldehyde (BzH) as a model substrate. The catalysts were characterized using X-ray diffraction, thermogravimetric anal., Fourier transform IR spectroscopy, field-emission SEM, Energy dispersive X-ray spectroscopy (EDX), Brunauer-Emmett-Teller (BET), and Raman spectroscopy. The (1%)ZnO-MnCO₃/(1%)GRO exhibited significant specific activity (67 mmol.g^-1.hr^-1) with full conversion of BzOH and >99% BzH selectivity within just 6 min. The catalytic efficiency of the (1%)ZnO-MnCO₃/(1%)GRO nanocomposite was significantly better than the (1%)ZnO-MnCO₃/(1%)HRG and (1%)ZnO-MnCO₃ catalysts, presumably due to the existence of oxygen-possessing groups on the GRO surface and as well as a very high surface area that could have been instrumental in uniformly dispersing the active sites of the catalyst, i.e., ZnO-MnCO₃. Under optimum circumstances, various kinds of alcs. ROH (R = benzyl, furan-2-ylmethyl, cyclohexyl, 1-phenylethyl, etc.) were selectively transformed to resp. carbonyls, e.g., cyclohexanone with full convertibility over the (1%)ZnO-MnCO₃/(1%)GRO catalyst. Furthermore, the highly effective (1%)ZnO-MnCO₃/(1%)GRO catalyst could be successfully reused and recycled over five consecutive runs with a marginal reduction in its performance and selectivity. In the experiment, the researchers used many compounds, for example, (2,4-Dichlorophenyl)methanol (cas: 1777-82-8Formula: C7H6Cl2O).

(2,4-Dichlorophenyl)methanol (cas: 1777-82-8) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. A multistep synthesis may use Grignard-like reactions to form an alcohol with the desired carbon structure, followed by reactions to convert the hydroxyl group of the alcohol to the desired functionality.Formula: C7H6Cl2O

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Enantioselective synthesis of diisopropyl α-, β-, and γ-hydroxyarylalkylphosphonates from ketophosphonates: a study on the effect of the phosphonyl group was written by Meier, Chris;Laux, Wolfgang H. G.. And the article was included in Tetrahedron in 1996.Electric Literature of C8H9FO This article mentions the following:

A comparative study of different reduction conditions to an enantioselective synthesis of diisorpropyl α-, β- and γ-hydroxyphosphonates by 1,3,2-oxaborolidine catalysis using catecholborane or BH₃·Me₂S is described. The comparison to acetophenone reductions gave information’s on the effect of the phosphonyl group during the reduction of ketophosphonate. So very efficient syntheses to chiral dialkyl α-, β- and γ-hydroxyphosphonates were elaborated. In the experiment, the researchers used many compounds, for example, (S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4Electric Literature of C8H9FO).

(S)-1-(2-Fluorophenyl)ethanol (cas: 171032-87-4) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Electric Literature of C8H9FO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

A study of the effects of thiols on the frontal polymerization and pot life of multifunctional acrylate systems with cumene hydroperoxide was written by Morales, Alejandra;Pojman, John A.. And the article was included in Journal of Polymer Science, Part A: Polymer Chemistry in 2013.Formula: C10H14O5 This article mentions the following:

In an effort to create frontal polymerization systems with a “fail-safe” curing mechanism, we studied the effects of thiols on the thermal frontal polymerization velocity and pot life of a mixture of a multifunctional acrylate, kaolin clay (filler), and cumene hydroperoxide with either trimethylolpropane tris(3-mercaptopropionate) or 1-dodecanethiol (DDT). The acrylates were trimethylolpropane triacrylate, trimethylolpropane ethoxylate triacrylate, 1,6-hexanediol diacrylate, and di(ethylene glycol) diacrylate. Without a thiol, frontal polymerization did not occur. The front velocity increased with the concentration of either thiol, which has not been observed with peroxide initiators. The use of DDT yielded longer pot lives than the trithiol. The front velocities were inversely related to the pot lives. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013. In the experiment, the researchers used many compounds, for example, Diethyleneglycoldiacrylate (cas: 4074-88-8Formula: C10H14O5).

Diethyleneglycoldiacrylate (cas: 4074-88-8) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Formula: C10H14O5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Effects of calcium salts on thermal characteristics of hydroxypropyl methylcellulose films was written by Sakata, Yukoh;Yamaguchi, Hiroyuki. And the article was included in Journal of Non-Crystalline Solids in 2011.Application of 5743-47-5 This article mentions the following:

Cast films comprising hydroxypropyl methylcellulose (HPMC) and calcium chloride (CaCl₂) have higher flexibility than those with HPMC and calcium lactate pentahydrate (CLP). The aim of the present study was to investigate the relationship between the mol. behavior and the film flexibility of HPMC cast films. In differential scanning calorimetry (DSC) measurements, the HPMC-only cast films exhibited a glass transition temperature (Tg) of 142.1-143.9 °C, which is similar that of HPMC/CLP cast films. In contrast, HPMC/CaCl₂ cast films exhibited Tg of 76.1-77.3 °C, which is lower than that of HPMC-only and HPMC/CLP films. Thermal mech. anal. (TMA) results indicated that the HPMC-only and HPMC/CLP cast films contracted strongly around the Tg calculated using DSC. In contrast, the cast films comprising HPMC/CaCl₂ blends gradually contracted as the temperature increased; this behavior is significantly different from that observed in the HPMC-only and HPMC/CLP films. The most probable mechanism for the film flexibility of HPMC/calcium salt blends was clarified through attenuated total reflection Fourier transform-IR (ATR FT-IR) and thermogravimetric (TG) anal. The anal. results suggest that the difference in the flexibility of the cast films in the presence of CaCl₂ or CLP depends on the difference affinity between calcium salts and water mols. In the experiment, the researchers used many compounds, for example, Calcium 2-hydroxypropanoate pentahydrate (cas: 5743-47-5Application of 5743-47-5).

Calcium 2-hydroxypropanoate pentahydrate (cas: 5743-47-5) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Application of 5743-47-5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Effects of dietary natural vitamin E supplementation on laying performance, egg quality, serum biochemical indices, tocopherol deposition and antioxidant capacity of laying hens was written by Zhao, Haoran;Chen, Yueping;Wang, Shiqi;Wen, Chao;Zhou, Yanmin. And the article was included in Italian Journal of Animal Science in 2021.Computed Properties of C18H32CaN2O10 This article mentions the following:

This study was to evaluate the effects of dietary natural vitamin E supplementation on laying performance, egg quality, serum biochem. indexes, tocopherol deposition and antioxidant capacity of laying hens. A total of 360 46-wk-old Hyline Brown hens were randomly assigned into five treatments consisting of six replicates with 12 hens each for a 9-wk feeding trial. Birds were fed a basal diet supplemented with 0, 25, 50, 75, and 100 mg/kg natural vitamin E, resp. Natural vitamin E linearly increased egg production and egg mass (p < .05), linearly decreased feed conversion ratio (p < .05) and linearly and quadratically increased feed intake (p < .05). The total tocopherol concentration in liver and yolk increased quadratically and linearly with increasing levels of natural vitamin E, resp. (p < .05). A linear decrease in content of serum low-d. lipoprotein cholesterol was observed (p < .05). Supplementation of natural vitamin E linearly decreased serum malondialdehyde (MDA) level, linearly increased hepatic total antioxidant capacity (T-AOC) and catalase (CAT) activities, quadratically increased serum CAT activity and linearly and quadratically decreased hepatic MDA accumulation (p < .05). In conclusion, natural vitamin E can enhance laying performance, regulate serum cholesterol concentration, promote tocopherol deposition and improve antioxidant capacity, and dietary supplementation at a dosage of 100 mg/kg was recommended. HighlightsDietary supplementations of natural vitamin E significantly improved laying performance of hens. Dietary supplementations of natural vitamin E significantly increased tocopherol concentration of liver and yolk. Dietary supplementations of natural vitamin E significantly improved antioxidant capacity of hens. In the experiment, the researchers used many compounds, for example, Calcium (R)-3-(2,4-dihydroxy-3,3-dimethylbutanamido)propanoate (cas: 137-08-6Computed Properties of C18H32CaN2O10).

Calcium (R)-3-(2,4-dihydroxy-3,3-dimethylbutanamido)propanoate (cas: 137-08-6) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Computed Properties of C18H32CaN2O10

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts