Tag: M.W=250-300

Jiang, Xiuming; Yang, Denghui; Xiang, Guoqiang; Hu, Leqian published the artcile< Determination of cis/trans fatty acid contents in edible oils by 1H NMR spectroscopy in association with multivariate calibration>, Product Details of C19H34O2, the main research area is cis trans fatty acid edible oil NMR spectroscopy calibration.

In this work, cis and trans fatty acid (FA) contents in edible oils was determined using 1H NMR (1H NMR) spectroscopy. The comparison of 1H NMR spectra of edible oil and cis-trans isomerized oil showed that they were different in three regions: (1) 2.880 – 2.650 ppm caused by bis-allylic protons; (2) 2.140 – 1.900 ppm due to allylic protons; and (3) 1.030 – 0.930 ppm due to Me protons of linolenic acyl groups. The 1H NMR signals in these regions were combined with partial least squares method to predict contents of cis/trans fatty acids in edible oils. The results showed that the predicted values were consistent with the gas chromatog.-measured values and had a good linear relationship with a correlation coefficient (R2) of above 0.98. This work demonstrates that 1H NMR spectroscopy was successfully used to determine the composition of both cis and trans fatty acids in edible oils.

Journal of Food Composition and Analysis published new progress about Analysis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Product Details of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Enguilo Gonzaga, Vania; Romero, Rubi; Gomez-Espinosa, Rosa Maria; Romero, Amaya; Martinez, Sandra Luz; Natividad, Reyna published the artcile< Biodiesel Production from Waste Cooking Oil Catalyzed by a Bifunctional Catalyst>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is biodiesel fuel calcium iron oxide catalyst waste cooking oil.

The objective of this study was to prepare bifunctional catalysts based on iron and CaO and test them in the biodiesel production using waste cooking oil (WCO) as feedstock. Two iron precursors were studied, Fe2O3 and Fe(NO3)3·9H2O. The identified crystalline phases were Ca2Fe2O5 and CaFeO3. Surface morphol. and textural properties (distribution of active species, sp. surface area, size, and pore volume) were also analyzed. Addnl., thermal stability was studied and 800°C was established as the optimum calcination temperature The d. of both acidic and basic sites was higher with the catalyst prepared with Fe2O3 than with that prepared with Fe(NO3)3·9H2O. The latter, however, leads to reach equilibrium in half of the time than with the former. This was ascribed to the ratio of acidic to basic sites, which is higher with the catalyst prepared with the precursor salt. This ratio not only affects the overall cost of the process by affecting the time at which equilibrium is reached but also by dictating the methanol/oil molar ratio at which the equilibrium is reached sooner. The prepared bifunctional catalyst allowed us to produce biodiesel with 90% of Me ester content at atm. pressure, reaction temperature of 60°C, reaction time of 2 h, with 12:1 M ratio of methanol/WCO, 10 wt % of Fe over CaO, and a catalyst loading of 5 wt %. This catalyst can be used at least 3 times. The so-obtained biodiesel met the European norm EN-14214 regarding viscosity and d.

ACS Omega published new progress about Bifunctional catalysts. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tsamou, Maria; Carpi, Donatella; Pistollato, Francesca; Roggen, Erwin L.; Kelly, Bakulski published the artcile< Sporadic Alzheimer's Disease- and Neurotoxicity-Related microRNAs Affecting Key Events of Tau-Driven Adverse Outcome Pathway Toward Memory Loss>, Application of C19H34O2, the main research area is microRNA tau neurotoxicity memory loss Alzheimers disease; Adverse outcome pathway; Alzheimer’s disease; key events; miRs; neurotoxicity.

A complex network of aging-related homeostatic pathways that are sensitive to further deterioration in the presence of genetic, systemic, and environmental risk factors, and lifestyle, is implicated in the pathogenesis of progressive neurodegenerative diseases, such as sporadic (late-onset) Alzheimers disease (sAD). Since sAD pathol. and neurotoxicity share microRNAs (miRs) regulating common as well as overlapping pathol. processes, environmental neurotoxic compounds are hypothesized to exert a risk for sAD initiation and progression. Literature search for miRs associated with human sAD and environmental neurotoxic compounds was conducted. Functional miR anal. using PathDip was performed to create miR-target interaction networks. The identified miRs were successfully linked to the hypothetical starting point and key events of the earlier proposed tau-driven adverse outcome pathway toward memory loss. Functional miR anal. confirmed most of the findings retrieved from literature and revealed some interesting findings. The anal. identified 40 miRs involved in both sAD and neurotoxicity that dysregulated processes governing the plausible adverse outcome pathway for memory loss. Creating miR-target interaction networks related to pathol. processes involved in sAD initiation and progression, and environmental chem.-induced neurotoxicity, resp., provided overlapping miR-target interaction networks. This overlap offered an opportunity to create an alternative picture of the mechanisms underlying sAD initiation and early progression. Looking at initiation and progression of sAD from this new angle may open for new biomarkers and novel drug targets for sAD before the appearance of the first clin. symptoms.

Journal of Alzheimer’s Disease published new progress about Actin-related protein 2/3 complex ARPC3 Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Liu, Xueling; Wang, Zhiguo; Qian, Hua; Tao, Wenhua; Zhang, Ying; Hu, Chunyan; Mao, Weiwei; Guo, Qi published the artcile< Natural medicines of targeted rheumatoid arthritis and its action mechanism>, Reference of 112-63-0, the main research area is review resveratrol icariin antiiflammatory agent rheumatoid arthritis; alkaloids; autoimmune disease; flavonoids; glycosides; natural medicines; polyphenols; rheumatoid arthritis; terpenes.

A review. Rheumatoid arthritis (RA) is an autoimmune disease involving joints, with clin. manifestations of joint inflammation, bone damage and cartilage destruction, joint dysfunction and deformity, and extra-articular organ damage. As an important source of new drug mols., natural medicines have many advantages, such as a wide range of biol. effects and small toxic and side effects. They have become a hot spot for the vast number of researchers to study various diseases and develop therapeutic drugs. In recent years, the research of natural medicines in the treatment of RA has made remarkable achievements. These natural medicines mainly include flavonoids, polyphenols, alkaloids, glycosides and terpenes. Among them, resveratrol, icariin, epigallocatechin-3-gallate, ginsenoside, sinomenine, paeoniflorin, triptolide and paeoniflorin are star natural medicines for the treatment of RA. Its mechanism of treating RA mainly involves these aspects: anti-inflammation, anti-oxidation, immune regulation, pro-apoptosis, inhibition of angiogenesis, inhibition of osteoclastogenesis, inhibition of fibroblast-like synovial cell proliferation, migration and invasion. This review summarizes natural medicines with potential therapeutic effects on RA and briefly discusses their mechanisms of action against RA.

Frontiers in Immunology published new progress about Angiogenesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Gött, Hanna; Kiez, Silke; Dohmen, Hildegard; Kolodziej, Malgorzata; Stein, Marco published the artcile< Tumor treating fields therapy is feasible and safe in a 3-year-old patient with diffuse midline glioma H3K27M - a case report.>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is Diffuse midline glioma; Glioblastoma; Glioma; Pediatric glioma; TTFields.

Since high grade gliomas are aggressive brain tumors, intensive search for new treatment options is ongoing. For adult patients with newly diagnosed (ndGBM) and recurrent glioblastoma (rGBM), low intensity intermediate frequency alternating electric fields, known as tumor treating fields (TTFields) have been established as a new treatment modality. Tumor treating fields significantly increase survival rates in combination with adjuvant temozolomide (TMZ) in adult and GBM patients. Here, we report about feasibility and safety of treatment on a pediatric patient with diffuse midline glioma who is receiving TTFields therapy in combination with temozolomide.

Child’s nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery published new progress about 112-63-0. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Al-Zaban, Mayasar I.; AlHarbi, Maha A.; Mahmoud, Mohamed A.; Bahatheq, Aisha M. published the artcile< Production of biodiesel from oleaginous fungal lipid using highly catalytic bimetallic gold-silver core-shell nanoparticle>, HPLC of Formula: 112-63-0, the main research area is gold silver core shell nanoparticle biodiesel oleaginous fungal lipid; biodiesel; fungal lipids; gold-silver core-shell nanoparticles; optimization; transesterification.

This study aims to synthesize, characterize and apply gold-silver core-shell nanoparticles (Au@Ag NPs), a nanocatalyst, to maximize biodiesel production from fungal isolate Fusarium solani (FS12) via a transesterification one-step reaction. The Au@Ag NPs structure was examined by UV-vis spectrophotometer, transmission electron microscopy, X-ray diffraction and Fourier transform IR (FTIR). All devices were used to characterize Au@Ag NPs and confirmed successful synthesis of nanoparticles. Fungal lipid was quant. determined by sulfo-phospho-vanillin colorimetric method. Among 15 F. solani isolates obtained from rhizospheric soils of the date palm, F. solani (AF12) was chosen as the highly significant producer that accumulates above 20% lipid. The maximum biodiesel yield was 91.28 ± 0.19%, obtained under the optimum reaction conditions of 3% Au@Ag NPs as nanocatalyst concentration, and 1:20 oil to methanol molar ratio at 70°C for 30 min. HPLC method was applied for monitoring in situ transesterification reaction. FTIR spectroscopy was used in qual. anal. of biodiesel by verifying the presence of unique characteristic peaks of diagnostic significance. The quality of the biodiesel produced was confirmed by the high purity of fatty acid Me esters anal. content up to >99%. These findings propose the applicability of F. solani (FS12) as a promising isolate to accumulate lipids and biodiesel production as a feedstock. Significance and Impact of the Study : The link between nanotechnol. and fungi. Au@Ag NPs were synthesized at room temperature, which displayed high catalytic activity for in situ transesterification reaction. Catalytic activity appeared at low temperature, mole ratio and short reaction time. Oleaginous fungi are described as easily grown, have short life cycle, are cost-effective, and they utilized various sources of carbon up to waste and a simplified process to develop scale-up production as well, economic value, opposite the usage of vegetable oils which need for large agricultural areas.

Journal of Applied Microbiology published new progress about Absorption spectra. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Melikyan, Gagik G. published the artcile< Carbon-carbon bond-forming reactions promoted by trivalent manganese>, Quality Control of 112-63-0, the main research area is review Reactions; review Trivalent; review Promoted; review Carbon Carbon; review Bond Forming; review Manganese.

A review of the article Carbon-carbon bond-forming reactions promoted by trivalent manganese.

Organic Reactions (Hoboken, NJ, United States) published new progress about Organic synthesis. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Dinakaran, Paul M.; Kalainathan, S. published the artcile< Synthesis, growth, structural, spectral, linear and nonlinear optical and mechanical studies of a novel organic NLO single crystal 4-Bromo 4-Nitrostilbene (BONS) for nonlinear optical applications>, Related Products of 112-63-0, the main research area is bromo nitrostilbene single crystal NLO material; single crystal growth structural spectral linear NLO mech property.

Single crystal of 4-Bromo 4-Nitrostilbene (BONS), a new organic nonlinear optical material was synthesized and crystals were grown with dimensions up to 8 × 6 × 3 mm3 from Et Me ketone (EMK) solvent by slow evaporation method. Single crystal X-ray diffractometer was used to measure the unit cell parameters and confirmed the BONS structure as orthorhombic with the space group P212121. The sample has been subjected to powder X-ray diffraction to identify the crystalline nature and the prominent peaks were indexed. The functional groups were identified from Fourier transform IR (FTIR) spectral anal. Proton NMR anal. confirms the protonation in the structure of the title compound Optical behavior of BONS has been observed by UV-Vis absorption spectral anal. which shows the low cut off wavelength lies at 405 nm and found that the energy band gap of the crystal is 2.90 eV. Thermal stability of the material has been confirmed by TG/DTA analyses. The BONS compound formation analyzed by mass spectroscopic anal. The mech. strength of the crystal was found using Vickers microhardness measurement. The laser damage threshold (LDT) for the grown crystal was measured by using Nd:YAG laser. Photoluminescence spectrum indicated green light emission at 515.44 nm. The Kurtz powder second harmonic generation test shows that the BONS crystal (1.5 V) is a very potential NLO candidate for optical generation and it has SHG efficiency 69 times greater than that of KDP (21.7 mV).

Optical Materials (Amsterdam, Netherlands) published new progress about Band gap. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Cotrina, Ellen Y.; Blasi, Daniel; Vila, Marta; Planas, Antoni; Abad-Zapatero, Cele; Centeno, Nuria B.; Quintana, Jordi; Arsequell, Gemma published the artcile< Optimization of kinetic stabilizers of tetrameric transthyretin: A prospective ligand efficiency-guided approach>, SDS of cas: 112-63-0, the main research area is ligand efficiency guided preparation transthyretin fibrillogenesis inhibitor iododiflunisal; Drug discovery; Inhibitors; Iododiflunisal; LEI-based approach; Ligand efficiency indices (LEI); Protein–ligand interactions; TTR tetramer stabilizer; Transthyretin.

In the past few years, attempts have been made to use decision criteria beyond Lipinski’s guidelines (Rule of five) to guide drug discovery projects more effectively. Several variables and formulations have been proposed and investigated within the framework of multiparameter optimization methods to guide drug discovery. In this context, the combination of Ligand Efficiency Indexes (LEI) has been predominantly used to map and monitor the drug discovery process in a retrospective fashion. Here we provide an example of the use of a novel application of the LEI methodol. for prospective lead optimization by using the transthyretin (TTR) fibrillogenesis inhibitor iododiflunisal (IDIF) as example. Using this approach, a number of compounds with theor. efficiencies higher than the reference compound IDIF were identified. From this group, ten compounds were selected, synthesized and biol. tested. Half of the compounds (5, 6, 7, 8 and 10) showed potencies in terms of IC50 inhibition of TTR aggregation equal or higher than the lead compound These optimized compounds mapped within the region of more efficient candidates in the corresponding exptl. nBEI-NSEI plot, matching their position in the theor. optimization plane that was used for the prediction. Due to their upstream (North-Eastern) position in the progression lines of NPOL = 3 or 4 of the nBEI-NSEI plot, three of them (5, 6 and 8) are more interesting candidates than iododiflunisal because they have been optimized in the three crucial LEI variables of potency, size and polarity at the same time. This is the first example of the effectiveness of using the combined LEIs within the decision process to validate the application of the LEI formulation for the prospective optimization of lead compounds

Bioorganic & Medicinal Chemistry published new progress about Amyloidosis (potential treatment). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, SDS of cas: 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Amburgey-Peters, Judith C.; Haynes, LeRoy W. published the artcile< The addition of bromine to 1,2-diphenylethene>, Reference of 112-63-0, the main research area is chem education bromination diphenylethene pyridinium bromide perbromide bromine solvent.

The bromination of 1,2-diphenylethene, using a variety of solvents and brominating agents, can be used in both introductory and advanced organic chem. courses. The reactions can be used to illustrate the effects of changing solvents and reagents, as well as to reveal interesting aspects of organic reaction mechanisms. Experiments were carried out involving the addition of two brominating agent, pyridinium bromide perbromide (PBPB) and bromine to (Z)-1,2-diphenylethene (cis-stilbene) in the presence of different solvents, such as glacial acetic acid and dichloromethane. Bromine in glacial acetic acid gave an acceptable yield of d,l-1,2-dibromo-1,2-diphenylethane (d,l-DBDPE) than does PBPB in glacial acetic acid, and that even bromine in dichloromethane yields about 45% of d,l-DBDPE. A 49% of the d,l product was recovered by evaporating completely the dichloromethane.

Journal of Chemical Education published new progress about Bromination. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics