Tag: M.W=150-200

Harahap, F. S. published the artcileComparison of the chemical compounds of malacca bark and malacca fruit (Phyllanthus emblica) with gas chromatography-mass spectrometer (GC-MS), SDS of cas: 627-93-0, the publication is Journal of Physics: Conference Series (2020), 072011, database is CAplus.

Malacca (Phyllanthus emblica) has a chem. that contains acids that are used to treat cancer. This research was aimed to compare the content of chem. compounds malacca stem with malacca fruit (Phyllanthus emblica) with multilevel extraction methods. Extraction of the stem and Malaca fruit was carried out by maceration and socletation using non-polar nhexane, semi-polar acetone, and polar methanol as solvent. Non-polar components were separated by the soxhlet extraction method using n-hexane solvent. The residue from the soxhlet extraction was then macerated using acetone solvent. Furthermore, the polar component was separated by maceration extraction method using ethanol as a solvent. The ethanol extract was then identified by chem. compounds with Gas Chromatog.-Mass Spectrometer (GC-MS). Chem. compounds identified with GC-MS showed extracts on stem balakka contain the compound succinic acid di-Me ester, di-Me pentanedioate, and di-Me adipate, while extracts on malacca fruit contain the compound succinic acid di-Me ester, di-Me pentanedioate, di-Me adipate, Me adipate, 1,3-Dioxolane-4-methanol.

Journal of Physics: Conference Series published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, SDS of cas: 627-93-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Leite, Irena published the artcileAziridine-2-carboxylic acid derivatives and its open-ring isomers as a novel PDIA1 inhibitors, Quality Control of 1877-71-0, the publication is Chemistry of Heterocyclic Compounds (New York, NY, United States) (2021), 57(11), 1086-1106, database is CAplus.

Acyl derivatives of aziridine-2-carboxylic acid have been synthesized and tested as PDIA1 inhibitors. Calculations of charge value and distribution in aziridine ring system and some alkylating agents were performed. For the first time was found that acyl derivatives of aziridine-2-carboxylic acid are weak to moderately active PDIA1 inhibitors.

Chemistry of Heterocyclic Compounds (New York, NY, United States) published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C9H8O4, Quality Control of 1877-71-0.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Horatscheck, Andre published the artcileIdentification of 2,4-Disubstituted Imidazopyridines as Hemozoin Formation Inhibitors with Fast-Killing Kinetics and In Vivo Efficacy in the Plasmodium falciparum NSG Mouse Model, Safety of 3-(Methoxycarbonyl)benzoic acid, the publication is Journal of Medicinal Chemistry (2020), 63(21), 13013-13030, database is CAplus and MEDLINE.

A series of 2,4-disubstituted imidazopyridines, originating from a SoftFocus Kinase library, was identified from a high throughput phenotypic screen against the human malaria parasite Plasmodium falciparum. Hit compounds showed moderate asexual blood stage activity. During lead optimization, several issues were flagged such as cross-resistance against the multidrug-resistant K1 strain, in vitro cytotoxicity, and cardiotoxicity and were addressed through structure-activity and structure-property relationship studies. Pharmacokinetic properties were assessed in mice for compounds showing desirable in vitro activity, a selectivity window over cytotoxicity, and microsomal metabolic stability. Frontrunner compound 37(I) showed good exposure in mice combined with good in vitro activity against the malaria parasite, which translated into in vivo efficacy in the P. falciparum NOD-scid IL-2Rγ^null (NSG) mouse model. Preliminary mechanistic studies suggest inhibition of hemozoin formation as a contributing mode of action.

Journal of Medicinal Chemistry published new progress about 1877-71-0. 1877-71-0 belongs to esters-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Ester, name is 3-(Methoxycarbonyl)benzoic acid, and the molecular formula is C9H8O4, Safety of 3-(Methoxycarbonyl)benzoic acid.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Catel, Yohann published the artcileHigh refractive index monofunctional monomers as promising diluents for dental composites, COA of Formula: C11H15NO2, the publication is Dental Materials (2021), 37(2), 351-358, database is CAplus and MEDLINE.

To evaluate high refractive index methacrylates as diluents for the formulation of radiopaque esthetic bulk-fill composites.2-(4-Cumylphenoxy)ethyl methacrylate 1, 2-(2-phenylphenoxy)ethyl methacrylate 2 and 2-[2-(2-phenylphenoxy)ethoxy]ethyl methacrylate 3 were synthesized and characterized by ¹H NMR spectroscopy. The reactivity of each monomer was studied using photo-DSC. Bulk-fill composites based on monomers 1-3 were formulated. Translucency (before and after light cure) was measured using a spectrophotometer. The depth of cure and the water sorption of these materials were determined according to ISO 4049. The flexural strength and modulus of elasticity were measured using a three-point bending setup, according to ISO 4049. The shrinkage force was assessed based on a method described by Watts et al. using a universal testing machine.Monomers 1-3 were easily synthesized in two steps. They exhibit a low viscosity and a high refractive index (1.553-1.573). Monofunctional methacrylates 1-3 were found to be more reactive than triethylene glycol dimethacrylate (TEGDMA). Bulk-fill composites based on these monomers were successfully prepared They exhibit a high depth of cure and excellent esthetic properties (low transparency). These composites provide higher flexural modulus as well as lower water sorption than a corresponding material based on TEGDMA. Methacrylates 1 and 3 are particularly interesting as they led to composites showing lower shrinkage force.Methacrylates 1-3 are promising diluents for the formulation of highly esthetic radiopaque bulk-fill composites.

Dental Materials published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, COA of Formula: C11H15NO2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Shigehisa, Hiroki published the artcileHydroalkoxylation of Unactivated Olefins with Carbon Radicals and Carbocation Species as Key Intermediates, Application In Synthesis of 5205-11-8, the publication is Journal of the American Chemical Society (2013), 135(28), 10306-10309, database is CAplus and MEDLINE.

A unique Markovnikov hydroalkoxylation of unactivated olefins with a cobalt complex, silane, and N-fluoropyridinium salt is reported. Further optimization of reaction conditions yielded high functional group tolerance and versatility of alc. solvent employed, including methanol, i-propanol, and t-butanol. Use of trifluorotoluene as a solvent made the use of alc. in stoichiometric amount possible. Mechanistic insight into this novel catalytic system is also discussed. Exptl. results suggest that catalysis involves both carbon radical and carbocation intermediates.

Journal of the American Chemical Society published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C10H2F12NiO4, Application In Synthesis of 5205-11-8.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Lewis, S. H. published the artcileEffects of systematically varied thiourethane-functionalized filler concentration on polymerization behavior and relevant clinical properties of dental composites, Product Details of C11H15NO2, the publication is Materials & Design (2021), 109249, database is CAplus and MEDLINE.

Introduction of thiourethane (TU) oligomer to resin-based dental restorative materials reduces stress and improves fracture toughness without compromising conversion. Localization of TU at the resin-filler interface via silanization procedures may lead to more substantial stress reduction and clin. property enhancements. The objective of this study was to evaluate composite properties as a function of TU-functionalized filler concentration TU oligomers were synthesized using click-chem. techniques and subsequently silanized to barium glass filler. Resin-based composites were formulated using varying ratios of TU-functionalized filler and conventional methacrylate-silanized barium filler. Material property testing included thermogravimetric anal., real-time polymerization kinetics and depth of cure, polymerization stress, stress relaxation and fracture toughness. Clin. property testing included water sorption/solubility, composite paste viscosity, and gloss and surface roughness measured before and after subjecting the samples to 6 h of continuous tooth brushing in a custom-built apparatus using a toothpaste/water mixture Increasing TU-filler in the composite resulted in as much as a 78% reduction in stress, coupled with an increase in fracture toughness. Conversion was similar for all groups. After simulated tooth brushing, gloss reduction was lower for TU-containing composites and surface roughness was less than or equal to the control.

Materials & Design published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Product Details of C11H15NO2.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Mitwalli, Heba published the artcileNovel rechargeable calcium fluoride dental nanocomposites, Recommanded Product: Ethyl 4-dimethylaminobenzoate, the publication is Dental Materials (2022), 38(2), 397-408, database is CAplus and MEDLINE.

Composite restorations with calcium fluoride nanoparticles (nCaF2) can remineralize tooth structure through F and Ca ion release. However, the persistence of ion release is limited. The objectives for this study were to achieve long-term remineralization by developing a rechargeable nCaF2 nanocomposite and investigating the F and Ca recharge and re-release capabilities.Three nCaF2 nanocomposites were formulated: (1) BT-nCaF2:Bisphenol A glycidyl dimethacrylate (BisGMA) and triethylene glycol dimethacrylate (TEGDMA); (2) PE-nCaF2:Pyromellitic glycerol dimethacrylate (PMGDM) and ethoxylated bisphenol A dimethacrylate (EBPADMA); (3) BTM-nCaF2:BisGMA, TEGDMA, and Bis[2-(methacryloyloxy)ethyl] phosphate (Bis-MEP). All formulations contained 15% nCaF2 and 55% glass particles. Initial flexural strength and elastic modulus, F and Ca ion release, recharge and re-release were tested and compared to three com. fluoride-containing materials.BT and BTM nCaF2 composites were 3-4 times stronger and had elastic modulus 2 times that of resin-modified glass ionomer controls. PE-nCaF2 had comparable strength to RMGIs. All nCaF2 composites had significant F and Ca ion release and ion rechargeability. In F and Ca recharging cycles, PE-nCaF2 had the highest ion recharging capability among nCaF2 groups, followed by BT-nCaF2 and BTM-nCaF2 (p < 0.05). For all recharge cycles, ion release maintained similar levels, demonstrating long-term ion release was possible. Furthermore, after the final recharge cycle, nCaF2 nanocomposites provided continuous ion release for 42 days without further recharge.Novel nCaF2 rechargeable nanocomposites exhibited significant F and Ca ion release over multiple recharge cycles, demonstrating continuous long-term ion release. These nanocomposites are promising restorations with lasting remineralization potential.

Dental Materials published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Recommanded Product: Ethyl 4-dimethylaminobenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Swick, Steven M. published the artcileFluorinating p-Extended Molecular Acceptors Yields Highly Connected Crystal Structures and Low Reorganization Energies for Efficient Solar Cells, Application of Dimethyl itaconate, the publication is Advanced Energy Materials (2020), 10(23), 2000635, database is CAplus.

Here, the synthesis, physiochem. properties, thin film morphol., and photovoltaic response of ITN-F4 and ITzN-F4, the first indacenodithienothiophene nonfullerene acceptors that combine p-extension and fluorination, are reported. The neat acceptors and bulk-heterojunction blend films with fluorinated donor polymer poly{[4,8-bis[5-(2-ethylhexyl)-4-fluoro-2-thienyl]benzo[1,2-b:4,5-b’]-dithiophene-2,6-diyl]-alt-[2,5-thiophenediyl[5,7-bis(2-ethylhexyl)-4,8-dioxo-4H,8H-benzo[1,2-c:4,5-c’]dithiophene-1,3-diyl]]} (PBDB-TF, also known as PM6) are investigated using a battery of techniques, including single crystal X-ray diffraction, fs transient absorption spectroscopy (fsTA), photovoltaic response, space-charge-limited current transport, impedance spectroscopy, grazing incidence wide angle X-ray scattering, and d. functional theory level computation. ITN-F4 and ITzN-F4 are found to provide power conversion efficiencies greater and internal reorganization energies less than their non-p-extended and nonfluorinated counterparts when paired with PBDB-TF. Addnl., ITN-F4 and ITzN-F4 exhibit favorable bulk-heterojunction relevant single crystal packing architectures. fsTA reveals that both ITN-F4 and ITzN-F4 undergo ultrafast hole transfer (<300 fs) in films with PBDB-TF, despite excimer state formation in both the neat and blend films.

Advanced Energy Materials published new progress about 617-52-7. 617-52-7 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Aliphatic hydrocarbon chain,Ester, name is Dimethyl itaconate, and the molecular formula is C9H21NO3, Application of Dimethyl itaconate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Aziz, Marya published the artcilePhytochemical, pharmacological, and In-silico molecular docking studies of Strobilanthes glutinosus Nees: An unexplored source of bioactive compounds, Name: Dimethyl adipate, the publication is South African Journal of Botany (2022), 618-627, database is CAplus.

Strobilanthes glutinosus (family: Acanthaceae) is one of the important medicinal plants and the current research work was carried out to assess the phytochem., biol., and in-silico evaluations of different solvent extracts of S. glutinosus. The phytochem. composition was assessed by determining qual. phytochem. testing, total bioactive contents, and GC-MS anal. For biol. evaluation, antioxidant (DPPH and FRAP), antibacterial, and enzyme inhibition (urease) potential were determined The methanol extract was found to contain the highest total phenolic (247.85 mg GAE/g extract), and flavonoid content (71.91 mg QAE/g extract), which can be correlated to the observed higher antioxidant potential of this extract On the contrary, the n-hexane extract presented maximum anti-urease activity with IC50 value of 0.244 mg/mL, whereas, in the case of antibacterial assays, a dose-dependent activity was observed Similarly, the GC-MS investigation of methanol extract and n-hexane fraction revealed the tentative identification of several important classes of secondary metabolites. Furthermore, the main compounds as identified by GC-MS were further studied for in-silico mol. docking studies in order to highlight any interactions between the compounds identified and the urease enzyme. Overall, the present investigation highlighted the studied plant extracts to be considered further for the isolation of bioactive compounds for the pharmaceutical and food industry.

South African Journal of Botany published new progress about 627-93-0. 627-93-0 belongs to esters-buliding-blocks, auxiliary class Ploymers, name is Dimethyl adipate, and the molecular formula is C8H14O4, Name: Dimethyl adipate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics

Chiari, Marina D. S. published the artcileExperimental dentin adhesives containing calcium orthophosphate particles: Effect on dentin bond strength, micro-permeability and collagen degradation, Application of Ethyl 4-dimethylaminobenzoate, the publication is International Journal of Adhesion and Adhesives (2021), 102828, database is CAplus.

To assess the effect of dicalcium phosphate dihydrate (DCPD) or mineral trioxide aggregate (MTA) particles on the microtensile bond strength (ΜTBS), micro-permeability and enzymic activity at the adhesive-dentin interface of exptl. dental adhesives. An exptl. ethanol-based, two-step etch-and-rinse adhesive system was prepared Four exptl. groups were tested, based on the type of particle added: (1) DCPD functionalized with diethylene glycol dimethacrylate (DCPD_DEGDMA), (2) citric acid (DCPD_CA), (3) calcium silicate (MTA) and (4) unfilled (control). All particles were added at 10 wt%. Human third molars had their occlusal enamel removed and dentin surface polished. After acid etching, the adhesives were applied on the dentin surfaces and the teeth were restored with a com. nanofilled resin composite. The μTBS and micro-permeability were tested after 24 h or 2 mo of storage in simulated body fluid (SBF) at 37°C. Bonded interfaces were observed using scanning electron microcopy (SEM). Gelatinolytic activity at the adhesive interfaces was assessed by in situ zymog. at 24 h and 2 mo in SBF/37°C. The results were described as relative florescent units (RFU). μTBS data were analyzed by ANOVA/Games-Howell test. Data from micro-permeability and in situ zymog. were analyzed by Kruskal-Wallis/Mann-Whitney test (alpha: 5%). Differences in μTBS were found among adhesives (control = MTA > DCPD_CA > DCPD_DEGDMA, p < 0.001), but not between storage times. The control group showed the lowest permeability at both observation periods. Except for DCPD_CA, no significant increases in micro-permeability were observed after 2 mo. All groups presented significant reductions in RFU values between 24 h and 2 mo. DCPD_DEGDMA (at 24 h) and MTA (at 2 mo) presented statistically lower RFU than the control (p < 0.01). Evidence of reduced MMP activity was observed at adhesive interfaces with the use of exptl. adhesives containing calcium-releasing particles. However, after two months, bond strength and micro-permeability results suggest that interfacial stability was not affected by adhesive formulation.

International Journal of Adhesion and Adhesives published new progress about 10287-53-3. 10287-53-3 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Ester, name is Ethyl 4-dimethylaminobenzoate, and the molecular formula is C11H15NO2, Application of Ethyl 4-dimethylaminobenzoate.

Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics