Month: November 2022

On December 31, 1994, Bazylak, Grzegorz published an article.Related Products of 2160-93-2 The title of the article was Chemometrically aided description of iminodiethanol retention on hydrocarbonaceous silica and cellulose layers. And the article contained the following:

Twelve model iminodiethanol congeners were studied using twenty six reversed phase thin layer chromatog. (RPTLC) systems comprising three different silica gel layers with varied hydrocarbonaceous modification. Methanol-water or acetonitrile – water, in different proportions were used as mobile phase. Solute log k values showed linear or quadratic dependence on the concentration of organic modifier in the mobile phase. Principal component anal. (PCA) was applied to all the exptl. results, including some paper chromatog. data taken from reference literature, to enable both explanation of the diverse selectivities of the different chromatog. systems, and the overall physicochem. classification of the activity of the aminoalcs. in polar solutions The experimental process involved the reaction of 2,2′-(tert-Butylazanediyl)diethanol(cas: 2160-93-2).Related Products of 2160-93-2

The Article related to iminodiethanol reversed phase thin layer chromatog, aminoalc reversed phase thin layer chromatog, Organic Analytical Chemistry: Separations and other aspects.Related Products of 2160-93-2

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On May 31, 2015, Zhao, Yanfang; Xu, Lubin published an article.Recommanded Product: H-Phg(4-OH)-OH The title of the article was Chiral Separation of D,L-p-Hydroxyphenylglycine by Ligand Exchange Micellar Electrokinetic Capillary Chromatography. And the article contained the following:

D-P-Hydroxyphenylglycine (D-p-HPG) is an important intermediate for the synthesis of semi-synthetic antibiotics. Owing to the importance of optical purity of D-p-HPG, it is necessary to be able to chirally sep. D,L-p-HPG and monitor the enantiomeric purity of D-p-HPG in the pharmaceutical industry. A Cu(II) complex with L-valine (L-Val) was used as a chiral selector for ligand exchange chiral separation of D,L-p-HPG by micelle electrokinetic capillary chromatog. Optical resolution of D,L-p-HPG was obtained with a running buffer of 20 mM NH4OAc, 40 mM sodium dodecylsulfate (SDS), 10 mM Cu(II) and 20 mM L-Val at pH 8.5 in <10 min. The enantiomer migration order was L-p-HPG before D-p-HPG, which was most suitable for the determination of minor L-p-HPG in the presence of a large excess of D-p-HPG. Separation parameters such as pH, SDS concentration, the molar ratio of Cu(II) to L-Val, the concentration of the chiral metal complex, and capillary temperature were studied. The present method can also be used for assaying the enantiomeric excess of D-p-HPG. The experimental process involved the reaction of H-Phg(4-OH)-OH(cas: 32462-30-9).Recommanded Product: H-Phg(4-OH)-OH

The Article related to hydroxyphenylglycine enantioseparation ligand exchange micellar electrokinetic capillary chromatog, Organic Analytical Chemistry: Separations and other aspects.Recommanded Product: H-Phg(4-OH)-OH

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Bajkacz, Sylwia; Ligor, Magdalena; Baranowska, Irena; Buszewski, Boguslaw published an article in 2021, the title of the article was Separation and Determination of Chemopreventive Phytochemicals of Flavonoids from Brassicaceae Plants.Category: alcohols-buliding-blocks And the article contains the following content:

The main aim of this study was to develop a method for the isolation and determination of polyphenols-in particular, flavonoids present in various morphol. parts of plants belonging to the cabbage family (Brassicaceae). Therefore, a procedure consisting of maceration, acid hydrolysis and measurement of the total antioxidant capacity of plant extracts (using DPPH assay) was conducted. Qual. anal. was performed employing thin-layer chromatog. (TLC), which was presented to be a suitable methodol. for the separation and determination of chemopreventive phytochems. from plants belonging to the cabbage family. The study involved the anal. of 25 vegetal samples, including radish, broccoli, Brussels sprouts, kale, canola, kohlrabi, cabbage, Chinese cabbage, red cabbage, pak choi and cauliflower. In addition, selected flavonoids content in free form and bonded to glycosides was determined by using an RP-UHPLC-ESI-MS/MS method. The experimental process involved the reaction of 3-Hydroxyphenylacetic acid(cas: 621-37-4).Category: alcohols-buliding-blocks

The Article related to flavonoid brassicaceae plant chemopreventive phytochem determination, cabbage family, flavonoids, glycosides, phenolic acids, Pharmaceuticals: Pharmacognostic Products and other aspects.Category: alcohols-buliding-blocks

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On July 31, 2022, Kasper, Karl; Abreu, Ilka N.; Feussner, Kirstin; Zienkiewicz, Krzysztof; Herrfurth, Cornelia; Ischebeck, Till; Janz, Dennis; Majcherczyk, Andrzej; Schmitt, Kerstin; Valerius, Oliver; Braus, Gerhard H.; Feussner, Ivo; Polle, Andrea published an article.COA of Formula: C3H6O4 The title of the article was Multi-omics analysis of xylem sap uncovers dynamic modulation of poplar defenses by ammonium and nitrate. And the article contained the following:

Xylem sap is the major transport route for nutrients from roots to shoots. In the present study, we investigated how variations in nitrogen (N) nutrition affected the metabolome and proteome of xylem sap and the growth of the xylem endophyte Brennaria salicis, and we also report transcriptional re-wiring of leaf defenses in poplar (Populus 3 canescens). We supplied poplars with high, intermediate or low concentrations of ammonium or nitrate. We identified 288 unique proteins in xylem sap. Approx. 85% of the xylem sap proteins were shared among ammonium- and nitrate-supplied plants. The number of proteins increased with increasing N supply but the major functional categories (catabolic processes, cell wallrelated enzymes, defense) were unaffected. Ammonium nutrition caused higher abundances of amino acids and carbohydrates, whereas nitrate caused higher malate levels in xylem sap. Pipecolic acid and N-hydroxypipecolic acid increased, whereas salicylic acid and jasmonoyl-isoleucine decreased, with increasing N nutrition. Untargeted metabolome analyses revealed 2179 features in xylem sap, of which 863 were differentially affected by N treatments. We identified 124 metabolites, mainly from specialized metabolism of the groups of salicinoids, phenylpropanoids, phenolics, flavonoids, and benzoates. Their abundances increased with decreasing N, except coumarins. Brennaria salicis growth was reduced in nutrient-supplemented xylem sap of low- and high- NO3–fed plants compared to that of NH4+-fed plants. The drastic changes in xylem sap composition caused massive changes in the transcriptional landscape of leaves and recruited defenses related to systemic acquired and induced systemic resistance. Our study uncovers unexpected complexity and variability of xylem composition with consequences for plant defenses. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).COA of Formula: C3H6O4

The Article related to ammonium nitrate xylem sap dynamic modulation multiomic analysis, carbohydrates, metabolomics, nitrogen, phytohormones, proteomics, salicinoids, Plant Biochemistry: Development and Aging and other aspects.COA of Formula: C3H6O4

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On December 31, 2021, Singh, Lalita; Antil, Reena; Dahiya, Pushpa published an article.Synthetic Route of 96-76-4 The title of the article was Antimicrobial and Antioxidant Potential of Vernonia Cinerea Extract Coated AuNPs. And the article contained the following:

Abstract: Green synthesis of nanoparticles is an important tool to reduce the harmful effects associated with traditional methods. In the present investigation, we have synthesized gold nanoparticles (AuNPs) using aqueous extract prepared from fresh aerial parts (leaf and stem) of Vernonia cinerea as bioreducing agent. The visual indication of change in color from pale yellow to brown to ruby-red indicated the successful formation of the AuNPs. Characterization of nanoparticles was carried out by UV-visible spectroscopy, X-ray crystallog. (XRD), Transmission electron microscopy (TEM) and Energy dispersive X-ray anal. (EDX). UV-Vis spectra showed a specific peak at 546 nm which was the initial confirmation of the biosynthesized AuNPs. TEM images showed spherical and triangular shape of AuNPs with an average size of 25 nm. From FTIR spectrum, different functional groups were identified that could be responsible for the formation, stabilization, and capping of biosynthesized AuNPs. Aqueous plant extract and biosynthesised AuNPs were sep. tested for their antimicrobial activity against six bacterial strains and four fungal strains. Biosynthesised AuNPs (2 mg/mL) showed significantly high zone of inhibition against the selected bacterial strains as compared to the aqueous plant extract Maximum zone of inhibition (18.2 mm) was observed with AuNPs against Streptococcus pyogenes whereas comparatively less value (12.5 mm) was recorded with the plant extract Interestingly, the inhibitory activity observed against bacterial strains was even better than ampicillin. Antifungal activity recorded with AuNPs (5 mg/mL) was maximum (17.4 mm) against R. oryzae and it was higher than pos. control (17.00 mm) and plant extract (13.2 mm). The present study clearly showed that AuNPs coated with Vernonia cinerea extract were as good as pos. control in inhibiting bacterial and fungal growth. In addition, these AuNPs also showed good antioxidant potential which was comparable to ascorbic acid. Graphical abstract: [graphic not available: see fulltext]. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Synthetic Route of 96-76-4

The Article related to vernonia aqueous extract gold nanoparticle synthesis antimicrobial, antifungal activity, antimicrobial activity, gold nanoparticles, vernonia cinerea, Pharmaceuticals: Pharmacognostic Products and other aspects.Synthetic Route of 96-76-4

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On August 31, 2015, Wu, Enqi; Kim, Kyung Tae; Adidi, Sreenivas Kalyan; Lee, Young Keun; Cho, Jong Woon; Lee, Wonjae; Kang, Jong Seong published an article.Product Details of 32462-30-9 The title of the article was Enantioseparation and chiral recognition of α-amino acids and their derivatives on (-)-18-crown-6-tetracarboxylic acid bonded silica by capillary electrochromatography. And the article contained the following:

Capillary electrochromatog. was employed for enantioseparation of α-amino acids and their derivatives (-)-18-Crown-6-2,3,11,12-tetracarboxylic acid bonded on the silica was used as the chiral stationary phase and methanol/Tris-citric acid (20 mM, pH 3.0-4.5) (20:80, volume/volume) was used as mobile phase. The enantioseparation performance is discussed and structure-chiral separation relation were tried to be explained. The enantiomeric resolution was increased when the pH of the mobile phase decreased or hydrogen of amino acid was substituted with halogen. The resolution of 4-bromophenylalanine was 2.37 at pH 4.5, however, this value was increased to 3.35 at pH 3.0. Bromo- or chloro-substituted phenylalanine tended to show higher resolution than fluoro-substituted one. For fluoro-substituted phenylalanine the resolution was increased in order of 4-, 3- and 2-substituted one. α-Methyltryptamine did not show reasonable separation As the thermodn. study is a useful tool to understand the chiral recognition, the temperature effect on the enantioseparation was studied and the thermodn. parameters were calculated The most important mechanism of chiral recognition for the analytes tested could be barrier effects based on the thermodn. calculations The coefficient of determination between hydrophobicity and separation factor is 0.87, indicating favorable separation with higher hydrophobicity of amino acids. The experimental process involved the reaction of H-Phg(4-OH)-OH(cas: 32462-30-9).Product Details of 32462-30-9

The Article related to amino acid derivative enantioseparation chiral recognition capillary electrochromatog, chiral crowntetracarboxylic acid bonded silica column capillary electrochromatog, Organic Analytical Chemistry: Separations and other aspects.Product Details of 32462-30-9

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On October 1, 2019, Li, Xue; Zhu, Pei; Xiang, Chaoyu published a patent.Name: 1-[(Dibenzylamino)methyl]cyclopropanol The title of the patent was Inkjet printing ink. And the patent contained the following:

Title ink comprises 0.1-20.0% of inorganic nanomaterials (oleylamine-stabilized red CdSe/ZnS quantum dots) and 80.0-99.9% of solvent (tetradecane and (R)-2,2-dimethyl-1,3-dioxolan-4-propanol), wherein the solvent comprises at least one cyclic alc. organic solvent. The experimental process involved the reaction of 1-[(Dibenzylamino)methyl]cyclopropanol(cas: 428855-17-8).Name: 1-[(Dibenzylamino)methyl]cyclopropanol

The Article related to quantum dot inkjet printing ink, Coatings, Inks, and Related Products: Inks and other aspects.Name: 1-[(Dibenzylamino)methyl]cyclopropanol

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On November 30, 2006, Yatake, Masahiro published a patent.Application In Synthesis of 2-Methyl-2-propylpropane-1,3-diol The title of the patent was Ink containing propanediol derivatives for ink-jet recording. And the patent contained the following:

The jet recording ink has excellent stability, high color saturation on regular paper, high glossiness on gloss paper, and excellent discharge stability from an ink jet head. This ink uses 2-methyl-2-propyl-1,3-propanediol (0.1-2%) penetrant. The experimental process involved the reaction of 2-Methyl-2-propylpropane-1,3-diol(cas: 78-26-2).Application In Synthesis of 2-Methyl-2-propylpropane-1,3-diol

The Article related to anticlogging jet printing ink alkyl propanediol derivative penetrant, Coatings, Inks, and Related Products: Inks and other aspects.Application In Synthesis of 2-Methyl-2-propylpropane-1,3-diol

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On August 31, 2013, Ben Youssef, Ismail; Alem, Halima; Sarry, Frederic; Elmazria, Omar; Jimenez Rioboo, Rafael; Arnal-Herault, Carole; Jonquieres, Anne published an article.Category: alcohols-buliding-blocks The title of the article was Functional poly(urethane-imide)s containing Lewis bases for SO2 detection by Love surface acoustic wave gas micro-sensors. And the article contained the following:

Functional polymers containing Lewis bases are known as promising materials for the elaboration of highly sensitive micro-sensors for acid gas detection. In this work, poly(urethane-imide)s (PUIs) with Lewis bases were synthesized in two steps only from various functional diols (N-methyldiethanolamine, N-tert-butyldiethanolamine, N-phenyldiethanolamine and 1,4-diethanolpiperazine) containing one or two tertiary amine groups with different chem. structures. The synthesis led to high yields, high mol. weights and a good control of the PUI amine content. These good film-forming polymers were then used as SO2 sensitive coatings on Love surface acoustic wave (L-SAW) micro-sensors. The phys. and mech. properties required for an optimal micro-sensor design were determined by High Resolution Brillouin Spectroscopy of PUI thin layers. Three-layer micro-sensors were developed by respecting the conditions for the L-SAW generation. The three-layer structure included Quartz ST-90 as the piezoelec. substrate, a ZnO guiding layer and a PUI sensitive layer. These micro-sensors were weakly sensitive to temperature and thus compatible with the targeted application. The exptl. results for SO2 detection showed that all the PUI coatings greatly improved the sensitivity compared to a micro-sensor without polymer coating. The basicity of the amine groups was not determining for the micro-sensor sensitivity to the SO2 acid gas and the key factor was their steric hindrance. Finally, the micro-sensor sensitivity increased with the accessibility of the amine groups in the order Piperazine-diol < tBu-DEA ≃ Ph-DEA ≪ MDEA. The experimental process involved the reaction of 2,2'-(tert-Butylazanediyl)diethanol(cas: 2160-93-2).Category: alcohols-buliding-blocks

The Article related to sulfur dioxide sensor lewis base polyurethane polyimide, coating sulfur dioxide sensor lewis base, Inorganic Analytical Chemistry: Detections and other aspects.Category: alcohols-buliding-blocks

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On December 31, 2022, Valdes, Alberto; Moreno, Lorena Ortega; Rello, Silvia Rojo; Orduna, Antonio; Bernardo, David; Cifuentes, Alejandro published an article.Category: alcohols-buliding-blocks The title of the article was Metabolomics study of COVID-19 patients in four different clinical stages. And the article contained the following:

SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) is the coronavirus strain causing the respiratory pandemic COVID-19 (coronavirus disease 2019). To understand the pathobiol. of SARS-CoV-2 in humans it is necessary to unravel the metabolic changes that are produced in the individuals once the infection has taken place. The goal of this work is to provide new information about the altered biomol. profile and with that the altered biol. pathways of patients in different clin. situations due to SARS-CoV-2 infection. This is done via metabolomics using HPLC-QTOF-MS anal. of plasma samples at COVID-diagnose from a total of 145 adult patients, divided into different clin. stages based on their subsequent clin. outcome (25 neg. controls (non-COVID); 28 pos. patients with asymptomatic disease not requiring hospitalization; 27 pos. patients with mild disease defined by a total time in hospital lower than 10 days; 36 pos. patients with severe disease defined by a total time in hospital over 20 days and/or admission at the ICU; and 29 pos. patients with fatal outcome or deceased). Moreover, follow up samples between 2 and 3 mo after hospital discharge were also obtained from the hospitalized patients with mild prognosis. The final goal of this work is to provide biomarkers that can help to better understand how the COVID-19 illness evolves and to predict how a patient could progress based on the metabolites profile of plasma obtained at an early stage of the infection. In the present work, several metabolites were found as potential biomarkers to distinguish between the end-stage and the early-stage (or non-COVID) disease groups. These metabolites are mainly involved in the metabolism of carnitines, ketone bodies, fatty acids, lysophosphatidylcholines/phosphatidylcholines, tryptophan, bile acids and purines, but also omeprazole. In addition, the levels of several of these metabolites decreased to “normal” values at hospital discharge, suggesting some of them as early prognosis biomarkers in COVID-19 at diagnose. The experimental process involved the reaction of 3-Hydroxyphenylacetic acid(cas: 621-37-4).Category: alcohols-buliding-blocks

The Article related to human covid metabolomics clin stage, Placeholder for records without volume info and other aspects.Category: alcohols-buliding-blocks

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