Month: December 2022

Tuning Surface Properties of Poly(methyl methacrylate) Film Using Poly(perfluoromethyl methacrylate)s with Short Perfluorinated Side Chains was written by Sohn, Eun-Ho;Ha, Jong-Wook;Lee, Soo-Bok;Park, In Jun. And the article was included in Langmuir in 2016.Name: 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate The following contents are mentioned in the article:

To control the surface properties of a commonly used polymer, poly(Me methacrylate) (PMMA), poly(perfluoromethyl methacrylate)s (PFMMAs) with short perfluorinated side groups (i.e., -CF₃, -CF₂CF₃, -(CF₃)₂, -CF₂CF₂CF₃) were used as blend components because of their good solubility in organic solvents, low surface energies, and high optical transmittance. The surface energies of the blend films of PFMMA with the -CF₃ group and PMMA increased continuously with increasing PMMA contents from 17.58 to 25.97 mN/m, whereas those of the other polymer blend films remained at low levels (10.24-12.59 mN/m), similar to those of pure PFMMAs, even when the blends contained 90 weight% PMMA. Surface morphol. and composition measurements revealed that this result originated from the different blend structures, such as uniform distribution and vertical phase separation We expect that these PFMMAs will be useful in widening the applicable window of PMMA. This study involved multiple reactions and reactants, such as 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3Name: 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate).

1,1,1,3,3,3-Hexafluoroisopropylmethacrylate (cas: 3063-94-3) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Name: 1,1,1,3,3,3-Hexafluoroisopropylmethacrylate

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

Persistence Enhancement of a Promising Tick Repellent, Benzyl Isothiocyanate, by Yeast Microcarriers was written by Kim, Hui-Ju;Jeong, Ah-Hyeon;Lee, Ji-Hoon;Park, Jun-Hwan. And the article was included in Molecules in 2021.Quality Control of Isopropylisothiocyanate The following contents are mentioned in the article:

Phenethyl isothiocyanate isolated from Armoracia rusticana root oil and its derivatives were tested at different doses in a bioassay designed to evaluate repellency against individual Haemaphysalis longicornis nymphs. Among the tested compounds, benzyl isothiocyanate exhibited repellency against H. longicornis nymphs at the lowest dose of 0.00625 mg/cm2, followed by phenethyl isothiocyanate (0.0125 mg/cm2) and Ph isothiocyanate (0.025 mg/cm2). The behavioral responses of H. longicornis nymphs exposed to benzyl isothiocyanate and phenethyl isothiocyanate indicated that the mode of action of these compounds can be mainly attributed to the vapor phase. Encapsulated benzyl isothiocyanate showed repellency up to 120 min post-application at 0.1 mg/cm2, whereas pure benzyl isothiocyanate showed repellency up to 60 min post-application at 0.1 mg/cm2. The present study suggests that benzyl isothiocyanate is a potential repellent for protection against H. longicornis nymphs, and encapsulation in yeast cells may enhance the repellency effect. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Quality Control of Isopropylisothiocyanate).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Quality Control of Isopropylisothiocyanate

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

Persistence Enhancement of a Promising Tick Repellent, Benzyl Isothiocyanate, by Yeast Microcarriers was written by Kim, Hui-Ju;Jeong, Ah-Hyeon;Lee, Ji-Hoon;Park, Jun-Hwan. And the article was included in Molecules in 2021.Formula: C4H7NS The following contents are mentioned in the article:

Phenethyl isothiocyanate isolated from Armoracia rusticana root oil and its derivatives were tested at different doses in a bioassay designed to evaluate repellency against individual Haemaphysalis longicornis nymphs. Among the tested compounds, benzyl isothiocyanate exhibited repellency against H. longicornis nymphs at the lowest dose of 0.00625 mg/cm2, followed by phenethyl isothiocyanate (0.0125 mg/cm2) and Ph isothiocyanate (0.025 mg/cm2). The behavioral responses of H. longicornis nymphs exposed to benzyl isothiocyanate and phenethyl isothiocyanate indicated that the mode of action of these compounds can be mainly attributed to the vapor phase. Encapsulated benzyl isothiocyanate showed repellency up to 120 min post-application at 0.1 mg/cm2, whereas pure benzyl isothiocyanate showed repellency up to 60 min post-application at 0.1 mg/cm2. The present study suggests that benzyl isothiocyanate is a potential repellent for protection against H. longicornis nymphs, and encapsulation in yeast cells may enhance the repellency effect. This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Formula: C4H7NS).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Formula: C4H7NS

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

Capsules from synthetic diblock-peptides as potential artificial oxygen carriers was written by Feng, Huayang;Linders, Juergen;Myszkowska, Sascha;Mayer, Christian. And the article was included in Journal of Microencapsulation in 2021.Application In Synthesis of Diphenyl carbonate The following contents are mentioned in the article:

The design of an encapsulation system consisting of a synthetic peptide which is fully biodegradable into non-toxic constituents. This system should be capable of encapsulating perfluorinated hydrocarbons and should be a promising basis for oxygen carriers to be used as artificial blood replacement. A diblock-peptide is synthesized following a phosgene-free method and characterised by ¹H-NMR. Subsequently, this diblock-peptide is self-assembled with perfluorodecalin (PFD) to form PFD-filled capsules as potential artificial oxygen carriers allowing for rapid oxygen uptake and release. The diblock-peptide Bu-PAsp₁₀-PPhe₁₀ is successfully synthesized and used to encapsulate PFD. The capsules have a spherical shape with an average diameter of 360 nm in stable aqueous dispersion. NMR measurements prove their phys. capability for reversible uptake and release of oxygen. The resulting capsules are expected to be fully biodegradable and possibly could act as oxygen carriers for artificial blood replacement. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application In Synthesis of Diphenyl carbonate).

Diphenyl carbonate (cas: 102-09-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Application In Synthesis of Diphenyl carbonate

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

Monoglyceride oleogels for lipophilic bioactive delivery – Influence of self-assembled structures on stability and in vitro bioaccessibility of astaxanthin was written by Wang, Shujie;Chen, Kefei;Liu, Guoqin. And the article was included in Food Chemistry in 2022.HPLC of Formula: 31566-31-1 The following contents are mentioned in the article:

The present study investigated the influence of self-assembled structures on stability and in vitro bioaccessibility of astaxanthin by modifying the structures with different processing conditions. The self-assembled structures of GMS oleogels were changed to produce smaller crystals and more compact network at higher glycerol monostearate (GMS) concentration and lower cooling temperature, resulting in higher hardness, oil binding capacity, and viscoelastic properties of oleogels. In the stability test, the highest retention ratio of astaxanthin was observed in oleogels formed at 4°C and 10% GMS, indicating that the denser network structures were more effective to prevent the degradation of astaxanthin. During in vitro digestion, the self-assembled structures of oleogels and the nature of GMS mols. affected the lipolysis and micellization, which in turn regulated the bioaccessibility of astaxanthin. Collectively, GMS oleogels were effective delivery materials for improving the stability and bioaccessibility of lipophilic bioactives. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1HPLC of Formula: 31566-31-1).

Glyceryl monostearate (cas: 31566-31-1) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.HPLC of Formula: 31566-31-1

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

Sensory, physicochemical and volatile compound analysis of short and long shelf-life melon (Cucumis melo L.) genotypes at harvest and after postharvest storage was written by Farcuh, Macarena;Copes, Bill;Le-Navenec, Gaelle;Marroquin, Juan;Cantu, Dario;Bradford, Kent J.;Guinard, Jean-Xavier;Van Deynze, Allen. And the article was included in Food Chemistry: X in 2020.Formula: C10H20O2 The following contents are mentioned in the article:

Flavor is a key attribute defining melon fruit quality and driving consumer preferences. We characterized and compared fruit ripening patterns (ethylene, respiration), physicochem. properties (rind/flesh color, firmness, soluble solids, acidity), aroma volatiles, and flavor-related sensory attributes in seven melon genotypes differing in shelf life capacity. Fruits were evaluated at optimal maturity and after storage for six days at 5°C plus one day at room temperature Total volatile content increased after storage in all genotypes, with esters being dominant. Shorter shelf-life genotypes, displaying a sharper climacteric phase, correlated with fruity/floral/sweet flavor-related descriptors, and with esters, sulfur-containing compounds and a terpenoid. Longer shelf-life types were associated with firmness, green and grassy aroma/flavor and aldehydes. Multivariate regression identified key volatiles that predict flavor sensory perception, which could accelerate breeding of longer shelf-life melons with improved flavor characteristics. This study involved multiple reactions and reactants, such as Octyl acetate (cas: 112-14-1Formula: C10H20O2).

Octyl acetate (cas: 112-14-1) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Formula: C10H20O2

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

Experimental study of surface heating by a high speed exhaust plume was written by Kuo, Y. D.;Smith, N. S. A.;Honnery, D. R.. And the article was included in Experimental Thermal and Fluid Science in 2016.Product Details of 763-69-9 The following contents are mentioned in the article:

Airframe surface heating by gas turbine plume is an ongoing issue in aerospace applications. This paper presents the practicability of a smaller scale system based on a micro gas turbine which offers verisimilitude and realism to the actual airframe surface heating by a full scale engine exhaust plume flow. A thin flat plate made from 7075-T6 aluminum alloy was placed at X = 7D downstream of the nozzle exit of the gas turbine. Nozzle exit flow temperature ranged from 850 K to 920 K and Reynolds number over the sample plate ranged from 3.8 × 10⁴ to 2.6 × 10⁵. The average Nusselt number was found to be correlated to CRe^mPrⁿ with m = 0.42, n = 0.33, C = 0.094 for parallel plume flow over the sample plate at X = 7D and Z = 0D. It was also found that coefficient C can be scaled by velocity magnitude ratio with respect to the plume center if the sample was positioned away from the center of the jet plume. Heat transfer by IR radiation was found to be less than 2% compared to the overall heat flux. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Product Details of 763-69-9).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Product Details of 763-69-9

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

Novel N-thioamide analogues of pyrazolylpyrimidine based piperazine: Design, synthesis, characterization, in-silico molecular docking study and biological evaluation was written by Vekariya, Mayur K.;Patel, Dhaval B.;Pandya, Pranav A.;Vekariya, Rajesh H.;Shah, Prapti U.;Rajani, Dhanji P.;Shah, Nisha K.. And the article was included in Journal of Molecular Structure in 2019.Category: esters-buliding-blocks The following contents are mentioned in the article:

(Thioureidopiperazinyl)pyrimidinyl pyrazolecarboxylates I (R = Ph, Me, Et, n-Pr, Bu, i-Pr, t-Bu, H₂C:CHCH₂, cyclohexyl, PhCH₂, 2-MeOC₆H₄, 3-MeOC₆H₄, 4-MeOC₆H₄, 3-ClC₆H₄, 4-ClC₆H₄, 4-FC₆H₄, 2,4-Cl₂C₆H₃, 3-IC₆H₄, 4-MeC₆H₄, PhCO, 4-O₂NC₆H₄, 2,3-Cl₂C₆H₃, 2,6-Cl₂C₆H₃, 2-ClC₆H₄) were prepared and tested as potential antituberculosis, antimalarial, antibacterial, and antifungal agents. Their physicochem., biol. permeabilities into cells and through the blood-brain barrier, and hERG inhibition were calculated and the binding to Plasmodium falciparum dihydrofolate reductase, Escherichia coli FabH, and Staphylococcus aureus hydrolase were calculated for selected compounds This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Category: esters-buliding-blocks).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Category: esters-buliding-blocks

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

Novel N-thioamide analogues of pyrazolylpyrimidine based piperazine: Design, synthesis, characterization, in-silico molecular docking study and biological evaluation was written by Vekariya, Mayur K.;Patel, Dhaval B.;Pandya, Pranav A.;Vekariya, Rajesh H.;Shah, Prapti U.;Rajani, Dhanji P.;Shah, Nisha K.. And the article was included in Journal of Molecular Structure in 2019.Category: esters-buliding-blocks The following contents are mentioned in the article:

(Thioureidopiperazinyl)pyrimidinyl pyrazolecarboxylates I (R = Ph, Me, Et, n-Pr, Bu, i-Pr, t-Bu, H₂C:CHCH₂, cyclohexyl, PhCH₂, 2-MeOC₆H₄, 3-MeOC₆H₄, 4-MeOC₆H₄, 3-ClC₆H₄, 4-ClC₆H₄, 4-FC₆H₄, 2,4-Cl₂C₆H₃, 3-IC₆H₄, 4-MeC₆H₄, PhCO, 4-O₂NC₆H₄, 2,3-Cl₂C₆H₃, 2,6-Cl₂C₆H₃, 2-ClC₆H₄) were prepared and tested as potential antituberculosis, antimalarial, antibacterial, and antifungal agents. Their physicochem., biol. permeabilities into cells and through the blood-brain barrier, and hERG inhibition were calculated and the binding to Plasmodium falciparum dihydrofolate reductase, Escherichia coli FabH, and Staphylococcus aureus hydrolase were calculated for selected compounds This study involved multiple reactions and reactants, such as Isopropylisothiocyanate (cas: 2253-73-8Category: esters-buliding-blocks).

Isopropylisothiocyanate (cas: 2253-73-8) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Category: esters-buliding-blocks

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

Addition of Alcohols to Acrylic Compounds Catalyzed by Mg-Al LDH was written by Teodorescu, F.;Deaconu, M.;Bartha, E.;Zavoianu, R.;Pavel, O. D.. And the article was included in Catalysis Letters in 2014.Category: esters-buliding-blocks The following contents are mentioned in the article:

This study reports the preparation of hydrotalcite with Mg/Al molar ratio 3 by co-precipitation under low suprasatn. conditions of Mg and Al nitrated solutions with Na₂CO₃ and NaOH at pH 10. The solid was thermally decomposed at 460° in air atm. in order to obtain mixed oxides which, by means of memory effect, can reconstruct the hydrotalcite structure by hydration with bi-distilled water. The hydrotalcite and reconstructed samples by memory effect were characterized by elemental anal., powder x-ray diffraction, DRIFT and TG-DTG. Determination of the catalysts surface base sites was made using a method based on the irreversible adsorption of organic acids with different pK_a values and N₂ adsorption-desorption isotherms. The catalytic activity of these solids was evaluated in 1,4-addition of saturated linear alcs. to different acrylic compounds All these reactions arose with high selectivity in the desired product. No byproducts were detected by means of GC-MS chromatog. and ¹H NMR. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Category: esters-buliding-blocks).

Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Category: esters-buliding-blocks

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