Category: 112-63-0

Lukhwareni, Azwidowi; Gededzha, Maemu Petronella; Amponsah-Dacosta, Edina; Blackard, Jason T.; Burnett, Rosemary J.; Selabe, Selokela Gloria; Kyaw, Thanda; Mphahlele, M. Jeffrey published the artcile< Impact of lamivudine-based antiretroviral treatment on hepatitis B viremia in HIV-coinfected south africans>, Related Products of 112-63-0, the main research area is lamivudine human hepatitis B viremia HIV antiretroviral therapy; HIV coinfection; South Africa.; antiretroviral therapy (ART); hepatitis B virus (HBV); lamivudine.

This prospective study investigated the impact of lamivudine-containing antiretroviral therapy (ART) on HIV-pos. patients in South Africa with baseline hepatitis B virus (HBV) infection. Follow-up samples from 56 HBV/HIV co-infected patients, 25 with occult HBV infection (OBI) and 31 with chronic HBV infection (CHB), were available for anal. HBV viral loads were quantified at 6, 12, 18, and 24 mo post-ART initiation by the COBAS TaqMan HBV Test 48 assay, and the HBV polymerase gene was amplified with an inhouse nested polymerase chain reaction assay. During 24 mo of lamivudine-based ART, 6 of 8 (75%) OBI and 4 of 6 (67%) CHB patients achieved undetectable levels of HBV DNA, while 2 patients had persistent HBV DNA levels >2 è„?105 despite lamivudine-based ART for 24 mo. HIV viremia was undetectable in all patients at 12 mo, suggesting high adherence to ART. Several lamivudine-associated HBV resistance mutations, including L180M, A181T, M204I, and M204V, were observed Sequence anal. also revealed a rare genotype G infection. While resource-limited settings may use lamivudine-based ART because of availability and low cost, antivirals with dual therapy against HBV and HIV (e.g., lamivudine and tenofovir) should always be recommended with the regular monitoring of HBV viremia levels.

Viruses published new progress about Antiviral agents. 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

Zhang, Hui; Shang, Yan; Zhao, Hong; Li, Chunyang; Wang, Xuan; Han, Baozhong; Li, Zesheng published the artcile< Theoretical study on the grafting reaction of maleimide to polyethylene in the UV radiation cross-linking process>, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is maleimide polyethylene grafting reaction UV radiation cross linking; UV radiation cross-linking polyethylene; graft; maleimide; transition.

Theor. investigation of the reaction of graft maleimide to polyethylene in the UV radiation crosslinking process is accomplished at the B3LYP/6-311+G(d,p) level for high-voltage cable insulation materials. The reaction potential energy surface of the nine reaction channels is identified. The results show that the N,N�ethylenedimaleimide can connect two 4-methylheptane mols. and act as the crosslinking agent. The calculated reaction potential barrier of forming 4-methylheptane radical by maleimide is higher than that of maleic anhydride. The study is expected to provide a basis for optimizing the UV radiation crosslinking polyethylene process and development more than 500 kV high-voltage cable insulation materials in practical applications.

Polymers (Basel, Switzerland) published new progress about Energy level excitation. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Safety of (9Z,12Z)-Methyl octadeca-9,12-dienoate.

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

Mogheiseh, Mohsen; Karimian, Ramin; Khoshsefat, Mostafa published the artcile< Vanillin-derived epoxy monomer for synthesis of bio-based epoxy thermosets: effect of functionality on thermal, mechanical, chemical and structural properties>, Application of C19H34O2, the main research area is epoxy resin preparation thermal mech property hydrolytic degradation.

Tri-functional vanillin-derived epoxy monomer was developed through the synthesized di-functional reagent and cured with a series of different types of hardeners (hydroxyl and amine based) to evaluate thermo-mech. properties of the resultant epoxy thermosets. Through elevating of curing degree by the hardeners, both alpha transition temperature (Tä¼? and crosslinking d. (蠀) slightly increased (up to 118æŽ?and 69.9 mol m-3). However, the highest values of storage and loss modulus (E’ and E”, resp.) were obtained using trimethylolpropane (TMP) in epoxy thermoset systems cooperating with tri-functional epoxy monomer at 3200 MPa and 359.3 MPa, resp. The sample produced by TMP exhibited the highest amount of statistic heat-resistant index (Ts) (up to 193æŽ?. Nevertheless, the longest half-life and the highest Td are obtained for the sample prepared by incorporation of tris(hydroxymethyl)aminomethane (TRIS) and 1,10-diaminodecane (1347 s, 431æŽ? resp.) containing amine agents as curing agent. Remarkably, the sample comprising triethanol amine showed the highest char yield (3.3 mg at 700æŽ? among the all samples. However, the sample cured by TRIS exhibited the highest elasticity, elongation and tensile strength among the obtained samples (up to 0.48 GPa, 6.56% and 22.90 MPa, resp.).

Chemical Papers published new progress about Complex modulus, tan � 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

Rao, A. V. R. Krishna; Dudhe, Premansh; Chelvam, Venkatesh published the artcile< Role of oxygen defects in basicity of Se doped ZnO nanocatalyst for enhanced triglyceride transesterification in biodiesel production>, Synthetic Route of 112-63-0, the main research area is biodiesel production triglyceride transesterification catalyst selenium doped zinc oxide.

We report herein, Se doped ZnO nanorods, a new heterogeneous base catalyst for transesterification of vegetable oil to fatty Me esters (FAME) or biodiesel. Surface area defects, mainly oxygen interstitials and oxygen vacancies, in the crystal lattice play essential role in enhancing basic site reactivity. The optimum transesterification reaction condition was found to be usage of 1:20 oil to methanol volume ratio, 5 weight% catalyst load, 65掳C as reaction temperature to give a maximum yield of 94.7% FAME in 3 h. The nanocatalyst was recyclable without loss of FAME yield and can be used for industrial scale biodiesel production

Catalysis Communications published new progress about Basicity. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Synthetic Route of 112-63-0.

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

Hiba, K.; Sreekumar, K. published the artcile< Multi- arm dendronized polymer as a unimolecular micelle: Synthesis, characterization and application as organocatalyst in the synthesis of N-unsubstituted 1,2,3-triazoles>, Formula: C19H34O2, the main research area is aryl triazole preparation green chem regioselective; aromatic aldehyde nitromethane cyclocondensation organocatalyst.

The present work reports dendronized polymer based catalysis in which the dendritic cavity and surface functional groups are the reactive centers due to the formation of dendritic unimol. micelle in aqueous medium. First generation amine functionalized tris(hydroxymethyl)propane initiated polyepichlorohydrin cored dendronized polymer TMP-PECH-Amine-G1 was synthesized and properly characterized with different anal. techniques. High functional group capacity, thermal stability and good water solubility are the eye-catching features of the TMP-PECH-Amine-G1 catalyst. The catalytic activity of TMP-PECH-Amine-G1 was studied by synthesizing 4-aryl-1H-1,2,3-triazoles I (R = H, 3-Cl, 4-N(CH3)2, 3,4-(OMe)2, etc.) by one pot condensation reaction of aromatic aldehydes RCHO, nitromethane and sodium azide. The synthesized catalyst offered high yield of products with low catalyst loading in green reaction media without the presence of any external additives. The catalyst was regenerated for six cycles of reaction without substantial loss in activity. This is the first reported method where homogeneous amine functionalized dendronized polymer was used as an organo catalyst for the synthesis of 4-substituted triazoles I.

Reactive & Functional Polymers published new progress about Benzaldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.

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

Alizadeh, Zeinab; Fattahi, Mohammad published the artcile< Essential oil, total phenolic, flavonoids, anthocyanins, carotenoids and antioxidant activity of cultivated Damask Rose (Rosa damascena) from Iran: With chemotyping approach concerning morphology and composition>, Computed Properties of 112-63-0, the main research area is Rosa essential oil phenolic compound flavonoid anthocyanin carotenoid Iran.

In the present study, the percentage, and components of essential oil, total phenol, flavonoids, anthocyanins, carotenoids and antioxidant capacity of 24 accessions of cultivated Damask rose have been investigated. These accessions had a 0.010-0.055 (v/w) percentage of essential oil. GC/MS anal. revealed forty-nine constituents that formed more than 90% of detected compounds Geraniol, citral, Me linoleate, n-heneicosane, and n-octane were the major components of essential oils. Acc.1 had the highest total phenol (165 mg Gallic acid/g DW) and flavonoid content (81 mg Quercetin/g DW). Total anthocyanin ranged from 0.5 to 3.5 (mg cyanidin-3-glucoside/g DW). Carotenoid content ranged from 0.002 to 0.055 mg/g DW, the highest being observed in Acc.18. Based on cluster anal. and, the accessions were categorized into seven groups. The antioxidant activities of the samples were determined using DPPH free radical scavenging activity and ferric reducing antioxidant power (FRAP) assay. All the accessions (4-12渭g/mL) had lower IC50 than ascorbic acid (18渭g/mL). In FRAP assay, they had high antioxidant activity in a range of 10-25渭mol Fe+2/g DW. Based on the high and valuable source of bioactive compounds of Damask rose the elite accessions can be recommended for boosting cultivation and food applications.

Scientia Horticulturae (Amsterdam, Netherlands) published new progress about Anthocyanins Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

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

Lv, Sheng-Qing; Fu, Zhen; Yang, Lin; Li, Qing-Rui; Zhu, Jiang; Gai, Qu-Jing; Mao, Min; He, Jiang; Qin, Yan; Yao, Xiao-Xue; Lan, Xi; Wang, Yan-Xia; Lu, Hui-Min; Xiang, Yan; Zhang, Zuo-Xin; Huang, Guo-Hao; Yang, Wei; Kang, Ping; Sun, Zhijian; Shi, Yu; Yao, Xiao-Hong; Bian, Xiu-Wu; Wang, Yan published the artcile< Comprehensive omics analyses profile genesets related with tumor heterogeneity of multifocal glioblastomas and reveal LIF/CCL2 as biomarkers for mesenchymal subtype>, Formula: C19H34O2, the main research area is glioblastoma CCL2 tumor heterogeneity immune response biomarker prognosis; CCL2; LIF; extracellular matrix; immune response; molecular subtype; multifocal GBM.

Around 10%-20% patients with glioblastoma (GBM) are diagnosed with more than one tumor lesions or multifocal GBM (mGBM). However, the understanding on genetic, DNA methylomic, and transcriptomic characteristics of mGBM is still limited. In this study, we collected nine tumor foci from three mGBM patients followed by whole genome sequencing, whole genome bisulfite sequencing, RNA sequencing, and immunohistochem. The data were further examined using public GBM databases and GBM cell line. Anal. on genetic data confirmed common features of GBM, including gain of chr.7 and loss of chr.10, loss of critical tumor suppressors, high frequency of PDGFA and EGFR amplification. Through profiling DNA methylome of individual tumor foci, we found that promoter methylation status of genes involved in detection of chem. stimulus, immune response, and Hippo/YAP1 pathway was significantly changed in mGBM. Although both CNV and promoter methylation alteration were involved in heterogeneity of different tumor foci from same patients, more CNV events than promoter hypomethylation events were shared by different tumor foci, implying CNV were relatively earlier than promoter methylation alteration during evolution of different tumor foci from same mGBM. Moreover, different tumor foci from same mGBM assumed different mol. subtypes and mesenchymal subtype was prevalent in mGBM, which might explain the worse prognosis of mGBM than single GBM. Interestingly, we noticed that LIF and CCL2 was tightly correlated with mesenchymal subtype tumor focus in mGBM and predicted poor survival of GBM patients. Treatment with LIF and CCL2 produced mesenchymal-like transcriptome in GBM cells. Together, our work herein comprehensively profiled multi-omics features of mGBM and emphasized that components of extracellular microenvironment, such as LIF and CCL2, contributed to the evolution and prognosis of tumor foci in mGBM patients.

Theranostics published new progress about Abnormal spindle-like microcephaly-associated protein Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.

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

Lo Presti, Francesca; Pellegrino, Anna L.; Malandrino, Graziella published the artcile< Journey of a molecule from the solid to the gas phase and vice versa: direct estimation of vapor pressure of alkaline-earth metalorganic precursors for atmospheric pressure vapor phase deposition of fluoride films>, HPLC of Formula: 112-63-0, the main research area is vapor pressure evaporation enthalpy atomic layer deposition fluoride film.

Atm. pressure (AP) vapor phase processes such as spatial at. layer deposition (S-ALD) and AP-metalorganic chem. vapor deposition (AP-MOCVD) are becoming increasingly appealing for their use in a variety of academic and industrial applications. Evaluation of precursor vapor pressures is crucial for their application in AP processes and to this aim the Langmuir equation has been applied as a simple and straightforward method for estimating the vapor pressure and vaporization enthalpy of various metalorganic precursors. Using benzoic acid as a calibration reference, the vapor pressure-temperature curves for several alk.-earth å°?diketonate fluorinated compounds, with mol. formula “”M(hfa)2è·¯L”” (with M = Mg, Ca, Sr, Ba; Hhfa = 1,1,1,5,5,5-hexafluoroacetylacetone and L = diglyme, triglyme, and tetraglyme) are derived from their termogravimetric curves. Thus, the enthalpy of vaporization of all complexes has been estimated using the Clausius-Clapeyron equation. As a proof of concept, preliminary results on the use of [Mg(hfa)2è·?H2O]è·?diglyme and [Ca(hfa)2è·¯diglymeè·¯H2O] or [Ca(hfa)2è·¯triglyme] as precursors for AP-MOCVD deposition of MgF2 and CaF2 in the form of thin films are presented. This approach may be used to easily determine vapor pressures of complexes and thus evaluate “”a priori”” the suitability of a compound as precursor for AP-MOCVD and/or spatial ALD.

Dalton Transactions published new progress about Atomic layer deposition. 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

Atik, Samir; Singer, Lawrence A. published the artcile< Fluorescence quenching by nitroxyl radicals in micellar environments. A useful probe for studying micelle-substrate interactions>, Electric Literature of 112-63-0, the main research area is fluorescence quenching micelle nitroxyl radical; surfactant micelle fluorescence quenching nitroxyl.

The quenching of the fluorescence from tetrasodium pyrenetetrasulfonate by 4 nitroxyl radicals I (R = N+ Me3Cl,-, CO2Na, NH3+, N+Me2 (CH2), CH3Cl-; R1 = H, CO2-) was studied in aqueous solutions in the absence and presence of cetyltrimethylammonium chloride and Na dodecylsulfate micelles. The relative quenching efficiencies are changed by the micelles. These changes are related to electrostatic interactions in which the micelle surface charge dominates.

Journal of the American Chemical Society published new progress about Fluorescence quenching. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

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

Deussen, H.-J.; Hendrickx, E.; Boutton, C.; Krog, D.; Clays, K.; Bechgaard, K.; Persoons, A.; Bjornholm, T. published the artcile< Novel Chiral Bis-dipolar 6,6'-Disubstituted Binaphthol Derivatives for Second-Order Nonlinear Optics: Synthesis and Linear and Nonlinear Optical Properties>, Application of C19H34O2, the main research area is binaphthalenediol chiral dipolar preparation nonlinear optic; second harmonic generation binaphthalenediol chiral dipolar; hyperpolarizability binaphthalenediol chiral dipolar preparation.

A number of thermally and optically stable, bis-dipolar chiral mols. based on two geometries of the binaphthol (BN) system with different acceptors/substituents were synthesized for the first time, and the synthetic routes were reported. Examples for the target compounds were vinylbinaphthol derivatives I (R, R1 = cyano, ethoxycarbonyl, etc.) and II (same R, R1). All mols. possess two equal donor-acceptor systems linked together to give a bis-dipolar system. Two mono-dipolar 6-substituted 2-butoxynaphthalene (R = -CH:C(CN)2, -CH:C(CN)(COOEt)) donor-acceptor systems were prepared as references The linear optical properties including solvatochromic shifts of absorption and fluorescence revealed strong charge transfer excitations in the new dipolar systems. The mols. show a high first hyperpolarizability å°?(up to (344-364) è„?10-30 esu) as measured by elec.-field-induced second-harmonic generation (EFISHG) and hyper-Rayleigh scattering (HRS). A model was developed to express the first hyperpolarizability of the bis-dipolar mols. in terms of the mol. geometry and the å°?of the monomeric donor-acceptor units. The tensor components were determined exptl. using this model and data from HRS and EFISHG. These techniques probed different combinations of the components of the mol. hyperpolarizability tensor. The results obtained were found to be in excellent mutual agreement.

Journal of the American Chemical Society published new progress about Fluorescence. 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