Category: alcohols-buliding-blocks

Maghsoudi, Majid published the artcileDevelopment of electrically assisted solvent bar microextraction followed by high performance liquid chromatography for the extraction and quantification of basic drugs in biological samples, SDS of cas: 111-87-5, the main research area is solvent bar microextraction high performance liquid chromatog extraction; Basic drugs; Biological sample; Electrically assisted solvent bar microextraction; Plasma; Urine.

In this study, a new extraction procedure is introduced based on elec. assisted solvent bar microextraction In the first step, the analytes are transferred from sample solution to the hollow fiber supported organic solvent. After that, with the aid of an elec. field, the analytes migrated into the aqueous extractant. The proposed approach was used to extract the three basic drugs (including lidocaine, diltiazem, and propranolol) from the plasma and urine samples. Under the optimized condition, (the supported organic solvent: 1-octanol, stirring rate: 300 rpm, pH of sample solution: 12.0, salt concentration: 2.0% (w/v), extraction time: 15 min, aqueous extractant: (30μL, 100 mM HCl), back-extraction time: 2 min, back-extraction voltage: 100 V), the proposed procedure presented wide linearities with coefficients of determination more than 0.992 over a concentration range of 5.0-1000 ng mL-1. The limit of detection was also determined in the range of 0.5 to 5.0 ng mL-1, repeatability (intra-day) was between 3.3 and 11.1% (n = 4), and reproducibility (inter-day) was between 4.3 and 14.6% (n = 4 days). It was indicated that the proposed approach could effectively extract the analytes from the plasma and urine samples, and the relative recoveries were between 90.2 and 105.6%, indicating the validity of this method.

Journal of Chromatography A published new progress about Biological samples. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, SDS of cas: 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

AL-Hashimi, Nabil N. published the artcileCetyl-alcohol-reinforced hollow fiber solid/liquid-phase microextraction and HPLC-DAD analysis of ezetimibe and simvastatin in human plasma and urine, Synthetic Route of 111-87-5, the main research area is ezetimibe simvastatin cetyl alc hollow fiber SLPME HPLC DAD; HPLC-DAD; cetyl alcohol; ezetimibe and simvastatin; plasma; reinforced solid/liquid microextraction; urine.

A new cetyl-alc.-reinforced hollow fiber solid/liquid-phase microextraction (CA-HF-SLPME) followed by high-performance liquid chromatog.-diode array detection (HPLC-DAD) method was developed for simultaneous determination of ezetimibe and simvastatin in human plasma and urine samples. To prepare the CA-HF-SLPME device, the cetyl-alc. was immobilized into the pores of a 2.5 cm hollow fiber micro-tube and the lumen of the micro-tube was filled with 1-octanol with the two ends sealed. Afterwards, the prepared device was introduced into 10 mL of the sample solution containing the analytes with agitation. Under optimized conditions, calibration curves plotted in spiked plasma and urine samples were linear in the ranges of 0.363-25/0.49-25 μg L-1 for ezetimibe/simvastatin and 0.193-25/0.312-25 μg L-1 for ezetimibe/simvastatin in plasma and urine samples, resp. The limit of detection was 0.109/0.174 μg L-1 for ezetimibe/simvastatin in plasma and 0.058/0.093 μg L-1 for ezetimibe/simvastatin in urine. As a potential application, the proposed method was applied to determine the concentration of selected analytes in patient plasma and urine samples after medication and satisfactory results were achieved. In comparison with reference methods, the CA-HF-SLPME-HPLC-DAD method demonstrates considerable potential in the biopharmaceutical anal. of selected drugs.

Biomedical Chromatography published new progress about Biopharmaceuticals. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Synthetic Route of 111-87-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Dai, Jianxun published the artcileUltrafast Response Polyelectrolyte Humidity Sensor for Respiration Monitoring, Category: alcohols-buliding-blocks, the main research area is polyelectrolyte humidity sensor respiration monitoring; breath monitoring; click reaction; in situ preparation; polyelectrolyte humidity sensors; ultrafast response.

Respiration monitoring is important for evaluating human health. Humidity sensing is a promising way to establish a relationship between human respiration and elec. signal. This work describes polymer humidity sensors with ultrafast response for respiration monitoring. The humidity-sensitive polyelectrolyte is in situ cross-linked on the substrate printed with interdigitated electrodes by a thiol-ene click reaction. The polyelectrolyte humidity sensor shows rapid water adsorption/desorption ability, excellent stability, and repeatability. The sensor with ultrafast response and recovery (0.29/0.47 s) when changing humidity between 33 and 95% shows good application prospects in breath monitoring and touchless sensing. Different respiration patterns can be distinguished, and the breath rate/depth of detection subjects can also be determined by the sensor. In addition, the obtained sensor can sense the skin evaporation in a noncontact way.

ACS Applied Materials & Interfaces published new progress about Breathing (animal). 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhang, Lijie published the artcileEffects of Tetragenococcus halophilus and Candida versatilis on the production of aroma-active and umami-taste compounds during soy sauce fermentation, Related Products of alcohols-buliding-blocks, the main research area is Tetragenococcus Candida soy sauce fermentation umami taste; Candida versatilis; Tetragenococcus halophilus; aroma-active; soy sauce; umami-taste compounds.

BACKGROUND : Soy sauce is a well-known condiment worldwide. High salt soy sauce usually has the better quality (aroma and taste) than low salt. Tetragenococcus halophilus and Candida versatilis are important starters for soy sauce fermentation It is of urgent need to explore what the effect of these two strains on the aroma- and taste-attributes of soy sauce to achieve high quality fermentation with low salt. RESULTS : In this study, aroma-active and taste compounds in soy sauce were reviewed and listed. Then, soy sauce fermentation inoculated with different combinations of T. halophilus (at different inoculated time) and C. versatilis were completed. Aroma-active and taste compounds in different samples were quantified. Multivariate anal. was used to analyze these data. The aroma-active compounds which were highly related to the inoculation of T. halophilus and C. versatilis were found. Meanwhile, the addition time of T. halophilus could also be highly related to the production of aroma-active compounds More importantly, T. halophilus was highly correlated with the production of umami-taste compounds in soy sauce, including aspartic acid, glutamic acid, alanine and N-succinyl-glutamic acid. CONCLUSION : These results will provide a better understanding of the effects of T. halophilus and C. versatilis on the formation of significant aroma-active and umami-taste constituents in soy sauce. Furthermore, it will be helpful to realize fermentative control of soy sauce with high quality at low salt.

Journal of the Science of Food and Agriculture published new progress about Candida versatilis. 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Reeves, Benjamin M. published the artcileTransition-Metal-Free Reductive Hydroxymethylation of Isoquinolines, Safety of 2,2-Dimethoxyethanamine, the main research area is isoquinolinium iodide paraformaldehyde reductive hydroxymethylation Cannizzaro Evans Tishchenko; hydroxymethylated tetrahydroisoquinoline preparation; potassium methoxide isoquinolinium iodide paraformaldehyde methylation hydroxymethylation tandem; tetrahydroisoquinoline one pot preparation; formaldehyde; reductive-functionalization; tandem reaction; tetrahydroisoquinoline; transition-metal-free synthesis.

A transition-metal-free reductive hydroxymethylation reaction has been developed, enabling the preparation of tetrahydroisoquinolines, e.g., I, bearing C4-quaternary centers from the corresponding isoquinolines. Deuterium labeling studies and control experiments enable a potential mechanism to be elucidated which features a key Cannizzaro-type reduction followed by an Evans-Tishchenko reaction. When isoquinolines featuring a proton at the 4-position are used, a tandem methylation-hydroxymethylation occurs, leading to the formation of II with 2 new C-C bonds in one pot.

Angewandte Chemie, International Edition published new progress about C-C bond formation. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, Safety of 2,2-Dimethoxyethanamine.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yang, Xiaolong published the artcileA neutral polysaccharide with a triple helix structure from ginger: Characterization and immunomodulatory activity, COA of Formula: C6H12O6, the main research area is polysaccharide ginger immunomodulator triple helix structure; Ginger polysaccharide; Immunomodulatory activity; Structure characterization; Triple helix structure; α-(1→4)-glucan.

A neutral ginger polysaccharide fraction (NGP) was isolated from ginger, and its primary structures and immunomodulatory activity were investigated. The results showed that NGP had a low mol. weight of 6305 Da. NGP principally consisted of glucose (93.88%) together with minor levels of galactose (3.27%) and arabinose (1.67%). Besides, results of methylation anal. and 1D/2D NMR spectroscopy demonstrated that NGP was α-glucan which had the main chain of 1,4-linked α-D-Glcp and α-D-Glcp residues branched at C-6 position which was different from the common triple helical β-glucans. NGP also displayed a remarkable immunol. activity on the RAW264.7 cells in vitro. It could significantly enhance the proliferation of macrophages without cytotoxicity and increase the production of immune substances (NO, TNF-α, IL-1β and IL-6). The secretion at the concentration of 200μg/mL was 29.41μM, 1496.71, 44.30 and 1889.83 pg/mL for each substance, resp. The results indicated that NGP could be a potential immune agent and might provide meaningful information for further chain conformation and immune mechanism research.

Food Chemistry published new progress about Cell proliferation. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, COA of Formula: C6H12O6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Vitvitsky, Victor published the artcileThe mitochondrial NADH pool is involved in hydrogen sulfide signaling and stimulation of aerobic glycolysis, Computed Properties of 97-67-6, the main research area is mitochondrial NADH hydrogen sulfide signaling aerobic glycolysis; aerobic glycolysis; electron transport chain; hydrogen sulfide; sulfide quinone oxidoreductase.

Hydrogen sulfide is synthesized by enzymes involved in sulfur metabolism and oxidized via a dedicated mitochondrial pathway that intersects with the electron transport chain at the level of complex III. Studies with H2S are challenging since it is volatile and also reacts with oxidized thiols in the culture medium, forming sulfane sulfur species. The half-life of exogenously added H2S to cultured cells is unknown. In this study, we first examined the half-life of exogenously added H2S to human colonic epithelial cells. In plate cultures, H2S disappeared with a t1/2 of 3 to 4 min at 37 °C with a small fraction being trapped as sulfane sulfur species. In suspension cultures, the rate of abiotic loss of H2S was slower, and we demonstrated that sulfide stimulated aerobic glycolysis, which was sensitive to the mitochondrial but not the cytoplasmic NADH pool. Oxidation of mitochondrial NADH using the genetically encoded mito-LbNOX tool blunted the cellular sensitivity to sulfide-stimulated aerobic glycolysis and enhanced its oxidation to thiosulfate. In contrast, sulfide did not affect flux through the oxidative pentose phosphate pathway or the TCA cycle. Knockdown of sulfide quinone oxidoreductase, which commits H2S to oxidation, sensitized cells to sulfide-stimulated aerobic glycolysis. Finally, we observed that sulfide decreased ATP levels in cells. The dual potential of H2S to activate oxidative phosphorylation at low concentrations, but inhibit it at high concentrations, suggests that it might play a role in tuning electron flux and, therefore, cellular energy metabolism, particularly during cell proliferation.

Journal of Biological Chemistry published new progress about Cell proliferation. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Computed Properties of 97-67-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, La published the artcileMetformin attenuates hepatoma cell proliferation by decreasing glycolytic flux through the HIF-1α/PFKFB3/PFK1 pathway, Related Products of alcohols-buliding-blocks, the main research area is hepatoma cell metformin glycolytic flux HIF1 alpha PFKFB3 PFK1; Glycolytic flux; Hepatocellular carcinoma; Metformin; PFK1.

Enhanced aerobic glycolysis is an essential hallmark of malignant cancer. Blocking the glycolytic pathway has been suggested as a therapeutic strategy to impair the proliferation of tumor cells. Metformin, a widely used anti-diabetes drug, exhibits anti-tumor properties. Stable isotope tracing technol. and gas chromatog.-mass spectrometry method were utilized to analyze the effect of metformin on glycolytic flux in HCC cells. Western blot and immunohistochem. were utilized to analyze the expression of phosphofructokinase-1 and 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 3 in HCC cells or xenograft tumor tissues. Lactate measurement and glucose uptake assay were used to analyze the level of lactate and glucose in the presence of frucose-2,6-diphosphate in HCC cells treated with metformin. We found that metformin significantly impaired hepatoma cell proliferation by inhibiting the glycolytic flux via PFK1 blockade. Interestingly, activation of PFK1 by F2,6BP reverses the inhibitory effect of metformin on hepatoma cell proliferation and glycolysis. Mechanistically, PFKFB3,a potent allosteric activator of PFK1, was markedly suppressed through inhibiting hypoxia-induced factor 1 accumulation mediated by metformin. Taken together these data indicate that HIF-1α/PFKFB3/PFK1 regulatory axis is a vital determinant of glucose metabolic reprogramming in hepatocellular carcinoma, which gives new insights into the action of metformin in combating liver cancer.

Life Sciences published new progress about Cell proliferation. 97-67-6 belongs to class alcohols-buliding-blocks, name is (S)-2-hydroxysuccinic acid, and the molecular formula is C4H6O5, Related Products of alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yelithao, Khamphone published the artcileStudies on structural properties and immune-enhancing activities of glycomannans from Schizophyllum commune, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Schizophyllum polysaccharide glycomannan immunomodulatory RAW264; Immunomodulatory; Polysaccharides; RAW264.7 cell; Schizophyllum commune.

Polysaccharides were extracted from Schizophyllum commune (a common mushroom) and their structural and immune-enhancing properties were investigated. Crude and fractions (F1 and F2) were composed of sugars (50.3-82.8%), proteins (1.46-20.1%), and sulfates (1.33-7.01%). Monosaccharide compositions of Cr and F1 were mainly composed of glucose (75.5% and 88.2%) with small amounts of mannose, galactose and xylose whereas the F2 was mainly composed of manose (55.2%) with minor amounts of galactose, glucose, and xylose. Their immune-enhancing activities were tested using RAW264.7 cells. Proliferation activity of RAW264.7 cells was over 100% after treatment with these polysaccharides. In addition, RAW264.7 cells produced large amounts of nitric oxide and various cytokines by up-regulating mRNA expression levels and the activation of nuclear factor-kappa (NF-κB) and mitogen-activated protein kinase (MAPK) after treatment with these polysaccharides. In addition, RAW264.7 cells were activated mainly through CR-3 and TLR-4 receptors. The backbone of F2 with excellent immune-enhancing activity was mainly linked by (1→3)-linked-mannopyranosyl and (1→2,3)-linked-mannopyranosyl residues.

Carbohydrate Polymers published new progress about Cell proliferation. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zheng, Tingting published the artcilePurification, characterization and immunomodulatory activity of polysaccharides from Leccinum crocipodium (Letellier.) Watliag, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is Leccinum macrophage polysaccharide immunomodulatory effect; Characterization; Immunomodulatory activity; Leccinum crocipodium (Letellier.) Watliag; Polysaccharide; Purification.

The polysaccharide obtained from edible fungi has been regarded as the major bioactive component related to the nutritional and human’s health. In the present study, three purified polysaccharides (LCP-1, LCP-2, and LCP-3) were obtained from Leccinum crocipodium (Letellier.) Watliag. The characterizations of LCP-1, LCP-2, and LCP-3 were determined by high-performance liquid chromatog. (HPLC), UV, FT-IR spectrometrys and 1H NMR spectrum. LCP-1 had a mol. weight of 2.303 × 105 Da and 7.519 × 103 Da, and was composed of mannose (Man), ribose (Rib), rhamnose (Rha), glucuronic acid (GluA), galacturonic acid (GalA), glucose (Glu), galactose (Gal), xylose (Xyl), arabinose (Ara) and fucuronic (Fuc). The mol. weight of LCP-2 was 2.655 × 105 Da, and its monosaccharide constituents were Man, Rib, Rha, GluA, Glu, Gal, Xyl, Ara and Fuc. The mol. weight of LCP-3 was 3.783 × 105 Da, and its monosaccharide constituents were Man, Rib, Rha, GluA, GalA, Glu, Gal, Xyl, Ara and Fuc. For the in vitro immunomodulatory experiments demonstrated that three purified polysaccharides could enhance immunomodulatory activities on macrophage RAW 264.7 cells, moreover, LCP-2 and LCP-3 showed stronger immunomodulatory activity than LCP-1. The results indicated that the LCP-1, LCP-2, and LCP-3 could be further developed as functional food or medicine.

International Journal of Biological Macromolecules published new progress about Cell proliferation. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Recommanded Product: (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts