Month: September 2022

Related Products of 93-92-5In 2020, Zarini, Daniele;Sangion, Alessandro;Ferri, Emanuele;Caruso, Enrico;Zucchi, Sara;Orro, Alessandro;Papa, Ester published 《Are In Silico Approaches Applicable As a First Step for the Prediction of e-Liquid Toxicity in e-Cigarettes?》. 《Chemical Research in Toxicology》published the findings. The article contains the following contents:

Recent studies have raised concerns about e-cigarette liquid inhalation toxicity by reporting the presence of chems. with European Union CLP toxicity classification. In this scenario, the regulatory context is still developing and is not yet up to date with vaping current reality. Due to the paucity of toxicol. studies, robust data regarding which components in tent. In this study we applied computational methods for studied chems. as a useful tool for predicting the acute toxicity of chems. contained in e-liquids The purpose of t the potential health concerns associated with e-liquid ingredients, (b) to prioritize e-liquid ingredients by calculating the e-tox index, and (c) to estimate acute toxicity of e-liquid mixtures QSAR models were generated using QSARINS software to fill the acute toxicity data gap of 264 e-liquid ingredients. As a second step, the potential acute toxicity of e-liquids mixtures was evaluated. Our preliminary data suggest that a computational approa serve as a roadmap to enable regulatory bodies to better regulate e-liquid composition and to contribute to consumer health protection. To complete the study, the researchers used 1-Phenylethyl acetate (cas: 93-92-5) .

1-Phenylethyl acetate(cas:93-92-5) is a carboxylic ester. Related Products of 93-92-5 It may be prepared by acetylation of methyl phenyl carbinol; from 1-bromoethylbenzene and silver acetate in acetic acid; from benzaldehyde by reacting with magnesium methyl bromide and subsequent acetylation.

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

Martinez-Cutillas, Alfredo;Leon, Salvador;Oh, Sejin;Martinez de Ilarduya, Antxon published 《Enzymatic recycling of polymacrolactones》 in 2022. The article was appeared in 《Polymer Chemistry》. They have made some progress in their research.Quality Control of Oxacyclohexadecan-2-one The article mentions the following:

The use of renewable monomers to make new polyesters which could replace the ones obtained from petrochem. resources employing green processes is attracting a lot of attention these days. With this in mind, three different macrolactones, ω-pentadecalactone, globalide and 6-hexadecenlactone, have been polymerized in bulk by enzymic ring opening polymerization (e-ROP) using immobilized Candida antarctica lipase B to give their corresponding polymacrolactones (PMLs). For the first time, these PMLs have been depolymerized enzymically in solution with the concourse of the same enzyme and at mild temperatures GPC, NMR and ESI MS demonstrated that the main products recovered after the enzymic processive recycling were cyclic monomers and dimers, with a small amount of higher size macrocyclic oligoesters (MCOs). It was observed that these depolymerizations followed a Michaelis-Menten kinetic model. Finally it was shown that these MCOs could be repolymd. This research provides a biosynthetic method for chem. recycling of these interesting polymeric materials providing a pathway towards a circular economy. And Oxacyclohexadecan-2-one (cas: 106-02-5) was used in the research process.

Oxacyclohexadecan-2-one(cas:106-02-5) is a natural product found in Lonicera japonica and Angelica archangelica.Quality Control of Oxacyclohexadecan-2-one It is a macrocyclic lactone that can be used as a flavoring agent and fragrance ingredient due to its musk flavor/odor.

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

Computed Properties of C15H28O2《Phytochemical profile and biological activity of endemic Sideritis sipylea Boiss. in North Aegean Greek islands》 was published in 2020. The authors were Axiotis, Evangelos;Petrakis, Eleftherios A.;Halabalaki, Maria;Mitakou, Sofia, and the article was included in《Molecules》. The author mentioned the following in the article:

Sideritis sipylea Boiss. is an endemic plant of the Mediterranean basin that is distributed in the Greek islands of the North Aegean Sea, i.e., Lesvos, Chios, Samos, and Ikaria, and in the West and Middle peninsula of Turkey. It is considered an endangered species because of its uncontrolled collection from its original habitat. Although the antioxidant, anti-inflammatory and antimicrobial properties have been previously reported, the total chem. profile has not yet been explored. In this context, the chem. profiles of the water/methanol (HA), methanol (ME), and Et acetate (EtOAc) extracts were analyzed using ultra-performance liquid chromatog. coupled with high-resolution mass spectrometry (UPLC-HRMS). In parallel, anal. by gas chromatog.-mass spectrometry (GC-MS) was employed for the dichloromethane extract (DCM) as well as for the essential oil (EO) and the extract obtained by supercritical fluid extraction (SFE). Furthermore, the total phenolic content (TPC) along with the in vitro tyrosinase and elastase enzyme inhibitory activity of different extracts was evaluated, towards the discovery of new active agents for cosmetic formulations. These activities are in accordance with its well-known antioxidant and anti-inflammatory properties, confirming the importance of ethnopharmacol. references for S. sipylea in Greece and Turkey. The experimental procedure involved many compounds, such as Oxacyclohexadecan-2-one (cas: 106-02-5) .

Oxacyclohexadecan-2-one(cas:106-02-5) is a natural product found in Lonicera japonica and Angelica archangelica.Computed Properties of C15H28O2 It is a macrocyclic lactone that can be used as a flavoring agent and fragrance ingredient due to its musk flavor/odor.

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

Synthetic Route of C15H28O2《Polymeric nanoparticles for the delivery of miRNA to treat Chronic Obstructive Pulmonary Disease (COPD)》 was published in 2019. The authors were Mohamed, Adel;Kunda, Nitesh K.;Ross, Kehinde;Hutcheon, Gillian A.;Saleem, Imran Y., and the article was included in《European Journal of Pharmaceutics and Biopharmaceutics》. The author mentioned the following in the article:

RNA interference (RNAi) based therapeutics are considered an endogenous mechanism for modulating gene expression. In addition, microRNAs (miRNAs) may be tractable targets for the treatment of Chronic Obstructive Pulmonary Disease (COPD). In this study miR146a was adsorbed onto poly (glycerol adipate-co-ω-pentadecalactone), PGA-co-PDL, nanoparticles (NPs) to reduce target gene IRAK1 expression. NPs were prepared using an oil-in-water single emulsion solvent evaporation method incorporating cationic lipid dioleoyltrimethylammoniumpropane (DOTAP). This resulted in NPs of 244.80 ± 4.40 nm at 15% DOTAP concentration, zeta potential (ZP) of +14.8 ± 0.26 mV and miR-146a (40μg/mL) maximum adsorption onto 15% DOTAP NPs was 36.25 ± 0.35μg per 10 mg NP following 24 h incubation. Using the MTT assay, it was observed that over 75% at 0.312 mg/mL of A549 cells remained viable after 18 h exposure to cationic NPs at a concentration of 1.25 mg/mL. Furthermore, the in vitro release profile of miR-146a from loaded NPs showed a continuous release up to 77% after 24 h. Internalization of miR-146a loaded cationic NPs was observed in A549 cell lines using fluorescence and confocal microscopy. The miR146a delivered as miR-146a-NPs had a dose dependent effect of highest NPs concentrations 0.321 and 0.625 mg/mL and reduced target gene IRAK1 expression to 40%. In addition, IL-8 promoter reporter output (GFP) was dampened by miR-146a-NPs. In conclusion, miR-146a was successfully adsorbed onto PGA-co-PDL-DOTAP NPs and the miR-146a retained biol. activity. Therefore, these results demonstrate the potential of PGA-co-PDL NPs as a delivery system for miR-146a to treat COPD. To complete the study, the researchers used Oxacyclohexadecan-2-one (cas: 106-02-5) .

Oxacyclohexadecan-2-one(cas:106-02-5) is a monomer used to make PGA-co-pentadecalactone polymers to be used in the development of directly compressed prolonged release tablets of slightly soluble drugs such as ketoprofen.Synthetic Route of C15H28O2It may be used for the synthesis of poly(pentadecanolide) (PPDL) by Novozyme 435 catalyzed ring-opening polymerization.

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

Karabagias, Ioannis K.;Karabagias, Vassilios K.;Nayik, Gulzar Ahmad;Gatzias, Ilias;Badeka, Anastasia V. published 《A targeted chemometric evaluation of the volatile compounds of Quercus ilex honey in relation to its provenance》 in 2022. The article was appeared in 《LWT–Food Science and Technology》. They have made some progress in their research.Category: esters-buliding-blocks The article mentions the following:

The present study aimed at the determination of volatile compounds (VOCs) of Greek Quercus ilex honey, which comprises a rarely studied honeydew honey, from different regions and to characterize its provenance using a targeted chemometric evaluation of the semi-quant. data of VOCs determined with headspace solid phase microextraction coupled to gas chromatog./mass spectrometry (HS-SPME/GC-MS). Principal component anal. (PCA), multivariate anal. of variance (MANOVA) and stepwise linear discriminant anal. (SLDA) showed that provenance affected the volatile composition of Quercus ilex honey. The PCA explained 98.10% of total variance with the factors that maximized the squared cosine to be 10 VOCs: heptane, dimethyl-disulfide, octane, nonane, styrene, alpha-pinene, meta-cymene, DL-limonene, 1-decanol, and tetradecanoic acid Et ester. The SLDA resulted in the formation of linear discriminant functions that provided a classification rate of honey samples according to provenance by ∼80%, based on styrene, eucalyptol, benzeneacetaldehyde, 1-decanol, and tetradecanoic acid Et ester. Considering the complementary results of PLS-VIP (partial least squares anal.-variable importance in projection) eucalyptol, 1-decanol, and tetradecanoic acid Et ester are proposed as volatile indicators of the provenance of Greek Quercus ilex honey. These VOCs were also correlated with the percent of Castanea sativa and Polygonum aviculare pollen grains.Ethyl tetradecanoate (cas: 124-06-1) were involved in the experimental procedure.

Ethyl tetradecanoate(cas: 124-06-1) is a labeled component from essential oil of natural hawthorn perfume. Also frequently used in cosmetics, soaps, and flavorings.Category: esters-buliding-blocksEthyl myristate is a long-chain fatty acid ethyl ester resulting from the formal condensation of the carboxy group of myristic acid with the hydroxy group of ethanol.

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

Formula: C15H28O2《Iridium-Catalyzed Reductive Allylation of Esters》 was published in 2019. The authors were Xie, Lan-Gui;Rogers, Jack;Anastasiou, Ioannis;Leitch, Jamie A.;Dixon, Darren J., and the article was included in《Organic Letters》. The author mentioned the following in the article:

The catalytic reductive transformation of carboxylic esters into α-branched ethers is described. The procedure pivots on the chemoselective iridium-catalyzed hydrosilylation of ester and lactone functionality to afford a silyl acetal intermediate. Upon treatment with a Lewis acid, these hemilabile intermediates dissociate to form reactive oxocarbenium ions, which can be intercepted by allyltributyltin nucleophiles, resulting in the formation of valuable α-branched alkyl-alkyl ether derivatives This reductive allylation procedure was found to be amenable to a range of carboxylic ester starting materials, and good chemoselectivity for Et over tert-Bu esters was demonstrated. Furthermore, downstream synthetic manipulation of α-amino acid-derived products led to the efficient formation of pyrrolidine, piperidine, and azepane frameworks. And Oxacyclohexadecan-2-one (cas: 106-02-5) was used in the research process.

Oxacyclohexadecan-2-one(cas:106-02-5) is a natural product found in Lonicera japonica and Angelica archangelica.Formula: C15H28O2 It is a macrocyclic lactone that can be used as a flavoring agent and fragrance ingredient due to its musk flavor/odor.

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

Electric Literature of C19H36O2In 2022, Lim, Hyun-Hee;Choi, Kyeong-Yun;Shin, Ho-Sang published 《Flavor components in tobacco capsules identified through non-targeted quantitative analysis》. 《Journal of Mass Spectrometry》published the findings. The article contains the following contents:

Tobacco flavors increase the attractiveness of a tobacco brand and ultimately promote addiction. Information about what flavor and how much flavor is in flavor capsules can provide an effective way to regulate tobacco flavor. In this study, 128 flavor chems. were identified and quantified by gas chromatog.-mass spectrometry using libraries and authentic standards Validation of the developed method was performed for interference, detection limits, calibration curves, accuracy, and precision. Menthol was the main ingredient in all capsules, and the carcinogenic pulegone was detected. Detected menthofuran, benzyl alc., geraniol, and eugenol cause toxic or severe irritation, and detected lactones can increase nicotine addiction by inhibiting nicotine metabolism in smokers. Margin of exposures for carcinogenic pulegone and non-carcinogenic menthol were well below safety thresholds, indicating a significant risk of inhalation exposure. It is desirable to prohibit the use of flavor capsules in consideration of human risk. And Methyl oleate (cas: 112-62-9) was used in the research process.

Methyl oleate(cas: 112-62-9) is a fatty acid methyl ester resulting from the formal condensation of the carboxy group of oleic acid with methanol.Electric Literature of C19H36O2 Methyl oleate(cas: 112-62-9) is an intermediate for detergents, emulsifiers, wetting agents, stabilizers, textile treatments, plasticizers for duplicating inks, rubbers, waxes etc.

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

Qin, Lu;Jiang, Hui;Tian, Jiang;Zhao, Jing;Liao, Hong published 《Rhizobia enhance acquisition of phosphorus from different sources by soybean plants》 in 2011. The article was appeared in 《Plant and Soil》. They have made some progress in their research.Product Details of 129832-03-7 The article mentions the following:

Some rhizobia can convert insoluble P into available forms for plant growth but the underlying mechanisms for this are not understood. In this study, the function of rhizobia in P acquisition from P sources for soybean was studied. Four rhizobial strains were employed to evaluate their phosphate-solubilizing (PS) activity, their ability to mediate pH changes in growth medium for different P sources, and IAA production A sand culture experiment using different P sources was carried out to characterize P acquisition changes of soybean plants with or without rhizobium inoculation. Rhizospheric acidification in soybean was further analyzed in hydroponics. Our results showed that all the tested rhizobial strains exhibited significant PS activity for different P sources in the order of Ca-P>Al-P>Phy-P≥Fe-P as indicated by the halo/colony ratio technique and increased Pi percentage in the solid and liquid phases, resp. Furthermore, all of the rhizobial strains could acidify the growth medium for all P sources except Phy-P, but only three of them produced IAA. Compared to non-nodulated plants, the nodulated plants had greater plant biomass and P content in sand culture for all the tested P sources, especially for Ca-P. Moreover, H⁺ and total acid exudation was more significantly enhanced in the nodulated plants in hydroponics. Conclusions Our results suggested that the PS ability of rhizobia is more related to acidification of the growth medium than IAA production Rhizobium inoculation could enhance P acquisition in soybean, especially on soils where Ca-P is the primary P source, and the primary mechanism for rhizobial-mediated P solubilization appears to be via Pi remobilization of nodulated roots through rhizospheric acidification. The experimental procedure involved many compounds, such as rel-(1R,2r,3S,4R,5s,6S)-Cyclohexane-1,2,3,4,5,6-hexayl hexakis(dihydrogen phosphate), dipotassium salt (cas: 129832-03-7) .

rel-(1R,2r,3S,4R,5s,6S)-Cyclohexane-1,2,3,4,5,6-hexayl hexakis(dihydrogen phosphate), dipotassium salt (cas:129832-03-7) is also known as Inositol hexakisphosphate. Phytic acid dipotassium salt is a potent chelator of divalent and trivalent cations, and a major determinant of zinc bioavailability.Product Details of 129832-03-7

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

Related Products of 112-62-9In 2022, Daridon, Jean-Luc;Bazile, Jean-Patrick;Nasri, Djamel published 《Speed of Sound, Density, and Related Thermophysical Properties of the Methyl Caprate + Methyl Oleate Binary System from 0.1 MPa to 70 MPa at 303.15 K》. 《International Journal of Thermophysics》published the findings. The article contains the following contents:

In this work, we reported values of speed of sound and d. of the Me caprate + Me oleate binary system over the whole composition range from 0% to 100% for pressures ranging from 0.1 MPa to 70 MPa and at 303.15 K. A pulse-echo technique working by reflection was used to measure the speed of sound w at 3 MHz. A vibrating U-tube densimeter was used to obtain d. data. From the combination of both these measurements, the isothermal and isentropic compressibilities were determined Finally, the speed of sound mol. weight product and the mol. compressibility Κm, also known as Wada’s constant, were calculated and represented as function of molar fraction in order to determine the best combining rule for predicting the speed of sound of the mixture from pure Fatty Acid Me Ester properties. And Methyl oleate (cas: 112-62-9) was used in the research process.

Methyl oleate(cas: 112-62-9) is a fatty acid methyl ester resulting from the formal condensation of the carboxy group of oleic acid with methanol.Related Products of 112-62-9 It is also used in biochemical research as a chromatographic reference standard.

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

Synthetic Route of C15H28O2In 2021, Kalana, U. L. D. Inush;Datta, Partha P.;Hewawasam, Rukshika S.;Kiesewetter, Elizabeth T.;Kiesewetter, Matthew K. published 《Organocatalytic ring-opening polymerization of thionolactones: anything O can do, S can do better》. 《Polymer Chemistry》published the findings. The article contains the following contents:

The H-bond mediated organocatalytic ring-opening polymerizations (ROPs) of four new thionolactone monomers are discussed. The kinetic and thermodn. behavior of the ROPs is considered in the context of the parent lactone monomers. Organocatalysts facilitate the retention of the S/O substitution as well as the synthesis of copolymers. The thionoester moieties in the polymer backbone serve as a chem. handle for a facile crosslinking reaction, and the porosity of the resulting crosslinked polymer can be tuned by altering the thioester d. in the (co)polymer. The crosslinked polymers are shown to be degradable in water, and an Au³⁺ recovery application is demonstrated. The experimental procedure involved many compounds, such as Oxacyclohexadecan-2-one (cas: 106-02-5) .

Oxacyclohexadecan-2-one(cas:106-02-5) is a natural product found in Lonicera japonica and Angelica archangelica.Synthetic Route of C15H28O2 It is a macrocyclic lactone that can be used as a flavoring agent and fragrance ingredient due to its musk flavor/odor.

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