Tag: 100-200

Self-healing modified liquefied lignocellulosic cross-linked bio-based polymer for controlled-release urea was written by Tian, Hongyu;Zhang, Lina;Sun, Xiao;Cui, Jing;Dong, Jingjing;Wu, Liang;Wang, Yanfeng;Wang, Lingli;Zhang, Min;Liu, Zhiguang;Lu, Panfang. And the article was included in Industrial Crops and Products in 2022.Computed Properties of C4H10O3 This article mentions the following:

Alkali-hydrolyzed lignocellulose was liquefied into polyols by acid-catalyzed dissolution, and then cross-linked with castor oil to prepare bio-based cross-linked polyurethane. Then, bis (2-hydroxyethyl) disulfide (SS) with self-healing function was used to reduce foaming in the curing process of polyurethane coating. Afterwards, disulfide bond modified crosslinked bio-based polyurethane coating (BCSPU) was applied to controlled-release urea (CRU). The results of excitation-emission matrixes indicated that SS made the coating smoother and denser and preventing the release of non-film-forming substances. Crosslinking modification technol. significantly extended the controlled release longevity of CRU by 77.3%, and the self-healing modification further prolonged the nitrogen release longevity by 61.5%. In addition, modified coating materials were non-toxic to wheat seeds and easily biodegradable in the soil. Crosslinking, self-healing modified controlled-release urea has enormous application potential in sustainable agriculture. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Computed Properties of 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. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Computed Properties of C4H10O3

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tuning magnetic heating efficiency of colloidal dispersions of iron oxide nano-clusters by varying the surfactant concentration during solvothermal synthesis was written by Ranoo, Surojit;Lahiri, B. B.;Damodaran, Shima P.;Philip, John. And the article was included in Journal of Molecular Liquids in 2022.Application of 111-46-6 This article mentions the following:

Magnetic fluid hyperthermia (MFH) is being actively sought as a supplementary cancer therapy, where enhancing the MFH efficiency is essential for reducing dosage and field exposure. Owing to the superior magnetic properties, magnetic nano-clusters (MNCs) are being developed as MFH agents, where the role of synthesis routes, colloidal stability and magneto-structural properties on MFH efficiency requires further attention. In this article, we report the tuning of MFH efficiency of water and diethylene glycol-based magnetic nanofluids containing iron-oxide MNCs of sizes 鈭?125 to 539 nm, obtained by varying the surfactant concentration Magnetite MNCs are prepared via solvothermal route, where the primary nano-crystallite (MNP) size is varied from 7.4 卤 0.7 to 25.0 卤 0.8 nm by reducing the sodium citrate (surfactant) concentration from 29 to 0.29 mg/mL. With decreasing surfactant concentration, the amount of sodium citrate absorbed on the surface of the freshly formed nano-seeds reduces, which lowers the electrostatic stabilization in polar media and favors the growth of larger MNPs that results in comparatively larger MNCs. Transmission electron microscopy and at. force microscopy based studies indicate the monodisperse spherical morphol. of the MNCs, consisting of several primary nano-crystallites. Room temperature isothermal magnetization measurements indicate high saturation magnetization and superparamagnetic nature of the MNCs, which are beneficial for MFH applications. Magneto-calorimetry experiments are performed for the accurate estimation of the MFH efficiency of the colloidal dispersions of the MNCs. Exptl. findings indicate that the heating efficiency increases from 15.24 卤1.22 to 193.8 卤 5.2 W/gFe (i.e., an enhancement of 鈭?12.7 times), at a field exposure condition of 33.1 kA/m and 126 kHz, when the primary nano-crystallite size is increased by 鈭?3.4 times by reducing the surfactant concentration It is observed that the heating efficiency decreases linearly with the logarithm of surfactant concentration in all the cases, which is attributed to the variations in primary nano-crystallite sizes and the resultant magnetic losses. Magneto-calorimetric experiments, using MNCs immobilized in high viscosity agar matrix, indicate insignificant contributions from the whole-scale Brownian relaxation, and the heating efficiency is found to be solely dependent on the magnetic losses of the primary nano-crystallites. With increasing primary nano-crystallite size, augmentation of heating efficiency is due to the increase in magnetization and dynamic coercivity, which is confirmed from theor. calculations using the high frequency hysteresis loops and sweeping rate modified Stoner Wohlfarth model. The obtained results indicate the possibility of tuning hyperthermia efficiency of MNCs by varying the surfactant concentration, which is beneficial for designing colloidally stable dispersions of MNCs with improved MFH efficiency. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6Application of 111-46-6).

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. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Application of 111-46-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Noncovalent ligand strands for transition-metal helicates: The straightforward and stereoselective self-assembly of dinuclear double-stranded helicates using hydrogen bonding was written by Telfer, Shane G.;Sato, Tomohiro;Kuroda, Reiko. And the article was included in Angewandte Chemie, International Edition in 2004.Recommanded Product: 1122-71-0 This article mentions the following:

A genuinely supramol. approach to transition-metal helicates is presented in which eight simple components (four ions and four small mols.) self-assemble to form dinuclear double helicates, where the ligand strands are built up through hydrogen-bonding interactions. The complexes [Co₂(L)₂(L-H)₂Cl₂] (L = 6-methylpyridin-2-ylmethanol, R-1-(6-methylpyridin-2-yl)ethanol and (6-methylpyridin-2-yl)nitromethanol) self-assembled and were characterized by x-ray crystallog. The self-assembly process is highly stereoselective. 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. A strong base can deprotonate an alcohol to yield an alkoxide ion (R鈥昈鈭?. For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. 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: 1122-71-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Insight into the aroma dynamics of Dongpo pork dish throughout the production process using electronic nose and GCxGC-MS was written by Li, Weili;Zheng, Lanting;Xiao, Yue;Li, Liangchao;Wang, Ning;Che, Zhenming;Wu, Tao. And the article was included in LWT–Food Science and Technology in 2022.Quality Control of Oct-1-en-3-ol This article mentions the following:

In this study, the aroma dynamic changes throughout the manufacturing process of Dongpo pork dish (DPD) model were investigated with electronic nose and two-dimensional gas chromatog. coupled with mass spectrometry (GC x GC-MS). The results of both electronic nose and GC x GC-MS studies were consistent in that the frying and steaming stages had the greatest effect on the aroma composition of DPD. A total of 111 volatiles were detected, 59 of which were key volatiles. The odor activity analyses further revealed that pentanal, hexanal, 1-octen-3-ol, 2,3-pentanedione and (E)-2-octenal as key aroma contributors during the frying stage, while 3-methylbutyraldehyde were mainly formed during the steaming stage. These aromas were mainly generated through the thermal degradation of lipids and the Maillard reaction. Hence, this study, for the first time, provided some profound insights for the industrial production and flavor control of DPD products. In the experiment, the researchers used many compounds, for example, Oct-1-en-3-ol (cas: 3391-86-4Quality Control of Oct-1-en-3-ol).

Oct-1-en-3-ol (cas: 3391-86-4) 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. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Quality Control of Oct-1-en-3-ol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Changes in flavor, heterocyclic aromatic amines, and quality characteristics of roasted chicken drumsticks at different processing stages was written by Zhang, Lang;Badar, Iftikhar Hussain;Chen, Qian;Xia, Xiufang;Liu, Qian;Kong, Baohua. And the article was included in Food Control in 2022.Quality Control of Oct-1-en-3-ol This article mentions the following:

This study evaluated changes in flavor, heterocyclic aromatic amines (HAAs), and quality characteristics of roasted chicken drumsticks at three different processing stages: marinating (MS), low-temperature roasting (LRS), and high-temperature roasting (HRS). Raw chicken drumsticks (RC) served as the control. Water content and L-value were significantly highest (P < 0.05), whereas a-value and b-value were significantly lowest (P < 0.05) in the HRS sample. Furthermore, the HRS sample had a significantly higher (P < 0.05) pH value than the RC, MS, and LRS samples. A total of 48 different volatile compounds were detected and electronic nose results indicated similar odor profiles between the MS and LRS samples. The LRS and HRS samples had significantly higher (P < 0.05) contents of PhIP, Harman, and Norharman than the RC and MS samples, which can be explained by the higher contents of precursors phenylalanine, tryptophan, and creatinine in the LRS and HRS samples compared to those in the RC and MS samples. Correlation anal. result indicated that the aldehydes and ketones are responsible for the PhIP, Harman, and Norharman formation. These results provide guidance for revealing the flavor and HAA formation of roasted chicken during processing. In the experiment, the researchers used many compounds, for example, Oct-1-en-3-ol (cas: 3391-86-4Quality Control of Oct-1-en-3-ol).

Oct-1-en-3-ol (cas: 3391-86-4) belongs to alcohols. The oxygen atom of the strongly polarized O鈥旽 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. 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.Quality Control of Oct-1-en-3-ol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Synthesis of 2,2-Disubstituted 2H-Chromenes through Carbon-Carbon Bond Formation Utilizing a [1,2]-Phospha-Brook Rearrangement under Broensted Base Catalysis was written by Kondoh, Azusa;Terada, Masahiro. And the article was included in Chemistry – A European Journal in 2022.Quality Control of (4-Chlorophenyl)methanol This article mentions the following:

A new methodol. for the synthesis of 2,2-disubstituted 2H-chromenes was developed by utilizing the [1,2]-phospha-Brook rearrangement under Broensted base catalysis. Phosphazene P2-tBu efficiently catalyzed the addition reaction of 4H-chromen-4-ols containing a diethoxyphosphoryl group with 伪,尾-unsaturated ketones, which involved the catalytic generation of a carbanion through the [1,2]-phospha-Brook rearrangement and subsequent conjugate addition at the 2-position to afford adducts possessing an alkenylphosphate moiety in a highly diastereoselective manner. Further transformation of the adducts based on a nickel-catalyzed cross-coupling reaction with arylzinc reagents provided densely functionalized 2,2-disubstituted 2H-chromenes. In the experiment, the researchers used many compounds, for example, (4-Chlorophenyl)methanol (cas: 873-76-7Quality Control of (4-Chlorophenyl)methanol).

(4-Chlorophenyl)methanol (cas: 873-76-7) 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. 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.Quality Control of (4-Chlorophenyl)methanol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Suspect screening based on market data of polar halogenated micropollutants in river water affected by wastewater was written by Menger, Frank;Ahrens, Lutz;Wiberg, Karin;Gago-Ferrero, Pablo. And the article was included in Journal of Hazardous Materials in 2021.Application of 1777-82-8 This article mentions the following:

Wastewater treatment plants (WWTPs) are known point sources of contaminants of emerging concern (CECs) to the aquatic environment, but current knowledge is mostly limited to well-known chem. structures. In this study, we sought to identify unknown CECs polluting the aquatic environment through a novel suspect screening approach for organohalogens, i.e. organic halogenated mols. often toxic and resistant to transformation and characterised as persistent organic pollutants (POPs). Surface water samples were collected with passive samplers in the Fyris River catchment (Uppsala, Sweden), analyzed using liquid chromatog. high-resolution mass spectrometry (LC-HRMS) and screened for organohalogens using a suspect screening approach based on market data obtained from a regulatory authority. Thirteen suspects from very different application areas were confirmed or tentatively identified with high confidence, including seven previously unknown structures (diflufenican, chlorzoxazone, 3-(3,4-dichlorophenyl)-1,1-dimethylurea, 2,4-disulfamyl-5-trifluoromethylaniline, 5-amino-2-chlorotoluene-4-sulfonic acid, perfluoropentane-1-sufonic acid, (2-chlorophenyl)(hydroxy)methanesulfonic acid). Spatiotemporal occurrence patterns were detected, which helped to understand the usage pattern of the chems. and pinpoint potential pollution sources, e.g. specific WWTPs in the catchment. Several of the newly identified structures had virtually no information publicly available and were detected years after their last registered use, which highlights the knowledge gaps and concerns about POPs. In the experiment, the researchers used many compounds, for example, (2,4-Dichlorophenyl)methanol (cas: 1777-82-8Application of 1777-82-8).

(2,4-Dichlorophenyl)methanol (cas: 1777-82-8) 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. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Application of 1777-82-8

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Stereoselective oxidation of racemic 1-arylethanols by basil cultured cells of Ocimum basilicum cv. Purpurascens was written by Itoh, Ken-ichi;Nakamura, Kaoru;Utsukihara, Takamitsu;Sakamaki, Hiroshi;Horiuchi, C. Akira. And the article was included in Biotechnology Letters in 2008.Synthetic Route of C8H9ClO This article mentions the following:

The biotransformation of racemic 1-phenylethanol (30 mg) with plant cultured cells of basil (Ocimum basilicum cv. Purpurascens, 5 g wet wt) by shaking 120 rpm at 25掳C for 7 days in the dark gave (R)-(+)-1-phenylethanol and acetophenone in 34 and 24% yields, resp. The biotransformation can be applied to other 1-arylethanols and basil cells oxidized the (S)-alcs. to the corresponding ketones remaining the (R)-alcs. in excellent ee. In the experiment, the researchers used many compounds, for example, (R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9Synthetic Route of C8H9ClO).

(R)-1-(3-Chlorophenyl)ethanol (cas: 120121-01-9) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R鈥昈鈭?. For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.Synthetic Route of C8H9ClO

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Acaricidal activity of carvacrol and thymol on acaricide-resistant Rhipicephalus microplus (Acari: Ixodidae) populations and combination with cypermethrin: Is there cross-resistance and synergism? was written by Novato, Tatiane Pinheiro;Milhomem, Marlise Neves;Marchesini, Paula Barroso Cruz;Coutinho, Ana Lucia;Silva, Isabela Santos;de Souza Perinotto, Wendell Marcelo;de Azevedo Prata, Marcia Cristina;Ferreira, Lorena Lopes;Lopes, Welber Daniel Zanetti;Costa-Junior, Livio Martins;de Oliveira Monteiro, Caio Marcio. And the article was included in Veterinary Parasitology in 2022.COA of Formula: C10H14O This article mentions the following:

This study evaluated the acaricidal activity of thymol and carvacrol on Rhipicephalus microplus populations with different resistance profiles and investigated the synergistic effect of combinations of these monoterpenes with cypermethrin. The adult immersion test (AIT) was used to characterize the susceptibility of tick populations (45 field populations) to synthetic acaricides: deltamethrin, amitraz and chlorfenvinphos. The larval packet test (LPT) was used to determine the LC₅₀ values for thymol (25 tick populations) and carvacrol (20 tick populations). The susceptible strain Porto Alegre (POA) was used as a reference for calculating the resistance ratio (RR). Subsequently, larval immersion tests (LIT) were performed with combinations of cypermethrin with thymol or carvacrol to assess a synergistic effect. In the AIT, deltamethrin showed efficacy > 90% in one (2.2%) population tested (mean: 12.1 and 11.1 for populations 1-25 and 26-40, resp.), whereas amitraz and chlorfenvinphos showed efficacy > 90% for two (4.4%) populations (mean: 61.3 and 47.3 for populations 1-25 and 26-40, resp.) and eight (17.7%) populations (mean: 69.7 and 59.7 for populations 1-25 and 26-40, resp.). In the LPT, the LC₅₀ values for thymol and carvacrol varied from 0.67 to 2.12 mg/mL and 0.55-3.21 mg/mL, with an average LC₅₀ for populations of 1.49 and 1.75 mg/mL, resp. For thymol, no resistance was observed in any of the populations, values of RR₅₀ > 1.5. There was no correlation between the LC₅₀ values for thymol and the efficacy of the chem. acaricides tested. Regarding carvacrol, for only one tick population had the value of RR₅₀ > 1.5, indicating an incipient resistance. No correlation was observed between the LC₅₀ values for carvacrol and the efficacy of tested acaricides. The combination of thymol and carvacrol with cypermethrin showed a synergistic effect in the resistant population (Jaguar – thymol 4.19 and carvacrol 3.67), and no synergistic interaction were showed in the susceptible population. Answering the questions we conclude that: 1 – The comparison between the LC₅₀ values for thymol and carvacrol in field populations and the susceptible strain POA suggests the absence of cross-resistance (ticks and terpenes), and the differences between the LC₅₀ values for thymol and carvacrol in the different R. microplus populations are inherent to the characteristics of each population tested; 2 – the combination of thymol or carvacrol with cypermethrin showed a synergistic effect with different activity according to the population of ticks. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2COA of Formula: C10H14O).

5-Isopropyl-2-methylphenol (cas: 499-75-2) 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. 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.COA of Formula: C10H14O

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Propolis extract combined with oregano essential oil applied to lima bean seeds against Sclerotinia sclerotiorum was written by Cibanal, Irene Laura;Fernandez, Leticia Andrea;Rodriguez, Silvana Andrea;Pellegrini, Cecilia Noemi;Gallez, Liliana Maria. And the article was included in European Journal of Plant Pathology in 2022.Recommanded Product: 499-75-2 This article mentions the following:

In this study, propolis extract (EPE) and oregano essential oil (OEO), both natural products with different bioactive compounds, were evaluated in vitro and in vivo against Sclerotinia sclerotiorum. This phytopathogen is important worldwide as it can contaminate seeds and infect seedlings of many species. Antifungal susceptibility assays on culture media revealed that EPE and OEO were highly active against this phytopathogen, both individually and combined. EPE showed a fungistatic dose-dependent effect, acting mainly through diffusion, while OEO completely prevented mycelial growth at very low concentrations, with a combination of vapor and diffusion activity. Interestingly, OEO was more effective than EPE, as their min. inhibitory concentrations were 0.39渭l/mL and 5渭l/mL, resp. Combinations of EPE and OEO showed, depending on the doses, additive or synergistic antifungal effects. In the in vivo trial, dilutions of EPE and OEO made in sterile distilled water (SDW) were tested through a pathosystem with lima bean seeds and S. sclerotiorum. Seeds soaked in formulations with 40% EPE + 12% OEO + 48% SDW, and 20% EPE + 6% OEO + 74% SDW reduced disease incidence of 40% and 60% resp., significantly decreased severity, with a min. phytotoxic effect. This study strengthens previous work showing the antifungal action of EPE and OEO against S. sclerotiorum, and, as a main goal, highlights their potential for the development of biofungicides to protect lima bean seeds. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2Recommanded Product: 499-75-2).

5-Isopropyl-2-methylphenol (cas: 499-75-2) belongs to alcohols. The oxygen atom of the strongly polarized O鈥旽 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. 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.Recommanded Product: 499-75-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts