Esters-buliding-blocks

Chavez-Marquez, Alejandra published the artcileCharacterization of Cabernet Sauvignon Wines by Untargeted HS-SPME GC-QTOF-MS, Application of Methyl octanoate, the main research area is furfuryl ethyl ether acetoin acetic acid alpha terpineol metabolomics; HS-SPME GC-QTOFMS; Mexican wine; metabolomics; untargeted method validation; wine.

Untargeted metabolomics approaches are emerging as powerful tools for the quality evaluation and authenticity of food and beverages and have been applied to wine science. However, most fail to report the method validation, quality assurance and/or quality control applied, as well as the assessment through the metabolomics-methodol. pipeline. Knowledge of Mexican viticulture, enol. and wine science remains scarce, thus untargeted metabolomics approaches arise as a suitable tool. The aim of this study is to validate an untargeted HS-SPME-GC-qTOF/MS method, with attention to data processing to characterize Cabernet Sauvignon wines from two vineyards and two vintages. Validation parameters for targeted methods are applied in conjunction with the development of a recursive anal. of data. The combination of some parameters for targeted studies (repeatability and reproducibility < 20% RSD; linearity > 0.99; retention-time reproducibility < 0.5% RSD; match-identification factor < 2.0% RSD) with recursive anal. of data (101 entities detected) warrants that both chromatog. and spectrometry-processing data were under control and provided high-quality results, which in turn differentiate wine samples according to site and vintage. It also shows potential biomarkers that can be identified. This is a step forward in the pursuit of Mexican wine characterization that could be used as an authentication tool. Molecules published new progress about Biomarkers. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, Application of Methyl octanoate.

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

Yang, Peng published the artcileMetagenomic and metabolomic profiling reveals the correlation between the microbiota and flavor compounds and nutrients in fermented sausages, Computed Properties of 110-42-9, the main research area is metagenomics metabolomics microbiota flavor compound nutrient fermented sausage; Fermented sausages; Flavor compounds; Metabolic pathways; Microbiota; Nutrients.

Understanding the interrelationships between the differentially abundant microorganisms and metabolites of traditional Fuet fermented sausages (FSs) and inoculated fermented sausages (IFSs) can help us identify key species that are missing from com. starter cultures to reproduce the flavor compounds and nutrients of traditional Fuet FSs. IFSs, inoculated with P. pentosaceus, P. acidilactici, S. xylosus, S. carnosus (SBM-52) or P. pentosaceus, and S. xylosus (THM-17), were deficient in reproducing the volatilome profile (in particular esters, Me aldehydes, and Me ketones) of traditional Fuet FSs because of the lack of diverse Staphylococci (S. carnosus, S. xylosus, S. equorum, and S. saprophyticus). Moreover, the combination of Pediococcus and Staphylococcus were pos. associated with amino acid, fatty acid, L-anserine, and L-carnosine levels. Pyridoxal and indolelactic acid levels were significantly increased in IFSs with the addition of P. acidilactici and S. carnosus, which were pos. associated with vitamin B6 and tryptophan metabolic pathways.

Food Chemistry published new progress about Biomarkers. 110-42-9 belongs to class esters-buliding-blocks, name is Methyl decanoate, and the molecular formula is C11H22O2, Computed Properties of 110-42-9.

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

Marti, Guillaume published the artcileComparison of the phytochemical composition of Serenoa repens extracts by a multiplexed metabolomic approach, SDS of cas: 111-11-5, the main research area is Serenoa metabolomics ethanol extract phytochem composition; Saw palmetto; Serenoa repens extract; metabolomics; natural products; phytochemical equivalence.

Phytochem. extracts are highly complex chem. mixtures In the context of an increasing demand for phytopharmaceuticals, assessment of the phytochem. equivalence of extraction procedures is of utmost importance. Compared to routine anal. methods, comprehensive metabolite profiling has pushed forward the concept of phytochem. equivalence. In this study, an untargeted metabolomic approach was used to cross-compare four marketed extracts from Serenoa repens obtained with three different extraction processes: ethanolic, hexanic and sCO2 (supercritical carbon dioxide). Our approach involved a biphasic extraction of native compounds followed by liquid chromatog. coupled to a high-resolution mass spectrometry based metabolomic workflow. Our results showed significant differences in the contents of major and minor compounds according to the extraction solvent used. The analyses showed that ethanolic extracts were supplemented in phosphoglycerides and polyphenols, hexanic extracts had higher amounts of free fatty acids and minor compounds, and sCO2 samples contained more glycerides. The discriminant model in this study could predict the extraction solvent used in com. samples and highlighted the specific biomarkers of each process. This metabolomic survey allowed the authors to assess the phytochem. content of extracts and finished products of S. repens and unequivocally established that sCO2, hexanic and ethanolic extracts are not chem. equivalent and are therefore unlikely to be pharmacol. equivalent

Molecules published new progress about Biomarkers. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, SDS of cas: 111-11-5.

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

Hung, Pei-Hsuan published the artcileIn vitro and in silico genetic toxicity screening of flavor compounds and other ingredients in tobacco products with emphasis on ENDS, Related Products of esters-buliding-blocks, the main research area is genotoxicity flavor in silico analysis tobacco; DNA damage; QSAR; biomarkers; computational toxicology; electronic nicotine delivery systems; flavor; in vitro; in vitro genotoxicity; tobacco products.

Electronic nicotine delivery systems (ENDS) are regulated tobacco products and often contain flavor compounds Given the concern of increased use and the appeal of ENDS by young people, evaluating the potential of flavors to induce DNA damage is important for health hazard identification. In this study, alternative methods were used as prioritization tools to study the genotoxic mode of action (MoA) of 150 flavor compounds In particular, clastogen-sensitive (γH2AX and p53) and aneugen-sensitive (p-H3 and polyploidy) biomarkers of DNA damage in human TK6 cells were aggregated through a supervised three-pronged ensemble machine learning prediction model to prioritize chems. based on genotoxicity. In addition, in silico quant. structure-activity relationship (QSAR) models were used to predict genotoxicity and carcinogenic potential. The in vitro assay identified 25 flavors as pos. for genotoxicity: 15 clastogenic, eight aneugenic and two with a mixed MoA (clastogenic and aneugenic). Twenty-three of these 25 flavors predicted to induce DNA damage in vitro are documented in public literature to be in e-liquid or in the aerosols produced by ENDS products with youth-appealing flavors and names. QSAR models predicted 46 (31%) of 150 compounds having at least one pos. call for mutagenicity, clastogenicity or rodent carcinogenicity, 49 (33%) compounds were predicted neg. for all three endpoints, and remaining compounds had no prediction call.

Journal of Applied Toxicology published new progress about Biomarkers. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Related Products of esters-buliding-blocks.

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

Hung, Pei-Hsuan published the artcileIn vitro and in silico genetic toxicity screening of flavor compounds and other ingredients in tobacco products with emphasis on ENDS, Computed Properties of 123-29-5, the main research area is genotoxicity flavor in silico analysis tobacco; DNA damage; QSAR; biomarkers; computational toxicology; electronic nicotine delivery systems; flavor; in vitro; in vitro genotoxicity; tobacco products.

Electronic nicotine delivery systems (ENDS) are regulated tobacco products and often contain flavor compounds Given the concern of increased use and the appeal of ENDS by young people, evaluating the potential of flavors to induce DNA damage is important for health hazard identification. In this study, alternative methods were used as prioritization tools to study the genotoxic mode of action (MoA) of 150 flavor compounds In particular, clastogen-sensitive (γH2AX and p53) and aneugen-sensitive (p-H3 and polyploidy) biomarkers of DNA damage in human TK6 cells were aggregated through a supervised three-pronged ensemble machine learning prediction model to prioritize chems. based on genotoxicity. In addition, in silico quant. structure-activity relationship (QSAR) models were used to predict genotoxicity and carcinogenic potential. The in vitro assay identified 25 flavors as pos. for genotoxicity: 15 clastogenic, eight aneugenic and two with a mixed MoA (clastogenic and aneugenic). Twenty-three of these 25 flavors predicted to induce DNA damage in vitro are documented in public literature to be in e-liquid or in the aerosols produced by ENDS products with youth-appealing flavors and names. QSAR models predicted 46 (31%) of 150 compounds having at least one pos. call for mutagenicity, clastogenicity or rodent carcinogenicity, 49 (33%) compounds were predicted neg. for all three endpoints, and remaining compounds had no prediction call.

Journal of Applied Toxicology published new progress about Biomarkers. 123-29-5 belongs to class esters-buliding-blocks, name is Ethyl nonanoate, and the molecular formula is C11H22O2, Computed Properties of 123-29-5.

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

Guanabens, Nuria published the artcileTartrate-resistant acid phosphatase 5b, but not periostin, is useful for assessing Paget’s disease of bone, Synthetic Route of 55981-09-4, the main research area is Pagets disease bone osteoarthritis TRAPb periostin; Bone turnover markers; Paget’s disease of bone; Periostin; TRAP5b.

To analyze if circulating periostin is a biomarker for PDB, and if it is associated with disease activity and involvement of long bones that represent major cortical contribution. Also, to analyze whether TRAP5b, a scarcely explored bone resorption marker, is useful in the assessment of PDB. No significant differences were observed between patients with and without active disease (964.5 ± 168.8 vs.1051.6 ± 175.6 pMol/L, p = 0.143), involvement or not of long bones (1022.2 ± 145.8 vs 949.7 ± 198.2 pMol/L, p = 0.181) and monostotic or polyostotic disease (963.8 ± 198.7 vs 1002.2 ± 161.4 pMol/L, p = 0.505). There were significant correlations between serum periostin and all bone turnover markers (bone ALP, PINP, uNTX, sCTX and TRAP5b) in PDB patients with active disease, but not in the inactive PDB group. Serum TRAP5b was significantly higher in PDB patients than in controls (4.43 ± 1.76 vs. 3.21 ± 1.02 U/L, p < 0.001), in those with active disease (4.98 ± 1.76 vs. 3.07 ± 0.72 U/L, p < 0.001) and in patients with polyostotic disease than in those with monostotic disease (4.81 ± 1.79 vs 3.68 ± 1.5 U/L, p = 0.005). TRAP5b levels were not influenced by previous bisphosphonate treatment (4.14 ± 1.42 vs. 4.84 ± 2.02 U/L, p = 0.206). Periostin is not useful for assessing PDB, while TRAP5b, which has been a scarcely explored bone turnover marker until now, may be useful in the anal. of this disease, providing new information on the resorption process. States. Bone (New York, NY, United States) published new progress about Biomarkers. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Synthetic Route of 55981-09-4.

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

Brouwer, Thomas published the artcileBiobased entrainer screening for extractive distillation of acetone and diisopropyl ether, Quality Control of 539-88-8, the main research area is biobased entrainer screening extractive distillation acetone diisopropyl ether volatility.

This work focuses on the assessment of biobased solvents for the industrial separation of acetone and diisopropyl ether employing extractive distillation From the exptl. screening of 35 (biobased) solvents at 1000 mbar, 84/16 mol ratio acetone/ diisopropyl ether, and a solvent to feed ratio of 1 (mass based) it was observed that DL-limonene entrained diisopropyl ether, resulting in an acetone relative volatility of 1.44. This is a consequence of the selective repulsion of the low-boiling and more polar acetone by DL-limonene. More extensive vapor-liquid equilibrium (VLE) anal. over the entire acetone-diisopropyl ether (pseudo-)binary composition range showed that DL-limonene was the only biobased solvent able to break the azeotrope. The exptl. investigated VLE data of this ternary system was successfully correlated with the NRTL and UNIQUAC models. The other solvents that appeared most interesting in the initial screening were water and ethylene carbonate, entraining acetone with the highest observed diispropyl ether relative volatilities of 2.71 and 11.6. Although the high induced relative volatility for the 84/16 mol ratio acetone/ diisopropyl ether appeared interesting, over the entire composition range this resulted however in a shift in location of the azeotrope rather than removing the azeotrope. Therefore, it was concluded that DL-limonene is for this system the best performing biobased entrainer of the screening study. The observations are in agreement with observations from literature on similar systems, where oxygenated polar solvents were seen to have more affinity towards the ketone than towards the ether, while apolar solvents induce a higher volatility of the ketones.

Separation and Purification Technology published new progress about Azeotropes. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Quality Control of 539-88-8.

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

Franz, Roland published the artcileContamination levels in recollected PET bottles from non-food applications and their impact on the safety of recycled PET for food contact, Synthetic Route of 140-11-4, the main research area is contamination PET bottles food packaging genotoxicity toxicol; PET bottles; PET contaminants; exposure; food packaging; migration; non-food PET applications; non-intentionally added substances (NIAS); post-consumer polyethylene terephthalate (PET); recycling; safety.

PET beverage bottles have been recycled and safely reprocessed into new food contact packaging applications for over two decades. During recollection of post-consumer PET beverage bottles, PET containers from non-food products are inevitably co-collected and thereby enter the PET recycling feed stream. To explore the impact of this mixing on the safety-in-use of recycled PET (rPET) bottles, we determined the concentrations of post-consumer substances in PET containers used for a range of non-food product applications taken from the market. Based on the chem. nature and amounts of these post-consumer substances, we evaluated their potential carry-over into beverages filled in rPET bottles starting from different fractions of non-food PET in the recollection systems and taking worst-case cleaning efficiencies of super-clean recycling processes into account. On the basis of the Threshold of Toxicol. Concern (TTC) concept and Cramer classification tools, we present a risk assessment for potential exposure of the consumer to the identified contaminants as well as unidentified, potentially genotoxic substances in beverages. As a result, a fraction of 5% non-food PET in the recycling feed stream, which is very likely to occur in the usual recollection systems, does not pose any risk to the consumer. Our data show that fractions of up to 20%, which may sporadically be contained in certain, local recollection systems, would also not raise a safety concern.

Molecules published new progress about Antifreeze. 140-11-4 belongs to class esters-buliding-blocks, name is Benzyl acetate, and the molecular formula is C9H10O2, Synthetic Route of 140-11-4.

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

Park, Min-Sun published the artcileEvaluating Docking Methods for Prediction of Binding Affinities of Small Molecules to the G Protein βγ Subunits, Synthetic Route of 72835-26-8, the main research area is docking mol G protein betagamma subunit.

Several studies have suggested that disrupting interactions of the G protein βγ subunits with downstream binding partners might be a valuable study for pharmaceutical development. Recently, small mols. have been found which bind to Gβγ with high apparent affinity in an ELISA, have demonstrated selective inhibition of interactions of Gβγ with downstream signaling partners, and have been shown to increase antinociceptive effects of morphine and inhibit inflammation in vivo. In this paper we examine several docking and scoring protocols for estimating binding affinities for a set of 830 ligands from the NCI diversity set to the Gβ1γ2 subunit and compared these with IC50s measured in a competition ELISA with a high-affinity peptidic ligand. The best-performing docking protocol used a consensus score and ensemble docking and resulted in a 6-fold enrichment of high-affinity compounds in the top-ranked 5% of the ligand data set.

Journal of Chemical Information and Modeling published new progress about Analgesics. 72835-26-8 belongs to class esters-buliding-blocks, name is (2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)methyl propionate, and the molecular formula is C8H9NO4, Synthetic Route of 72835-26-8.

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

Mostafa, Ahmed published the artcileFDA-approved drugs with potent in vitro antiviral activity against severe acute respiratory syndrome coronavirus 2, Application of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, the main research area is FDA drug potent antiviral agent SARSCoV2; COVID-19; SARS-CoV-2; antiviral; drug repurposing; virtual screening.

(1) Background: Drug repositioning is an unconventional drug discovery approach to explore new therapeutic benefits of existing drugs. Currently, it emerges as a rapid avenue to alleviate the COVID-19 pandemic disease. (2) Methods: Herein, we tested the antiviral activity of anti-microbial and anti-inflammatory Food and Drug Administration (FDA)-approved drugs, commonly prescribed to relieve respiratory symptoms, against Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the viral causative agent of the COVID-19 pandemic. (3) Results: Of these FDA-approved antimicrobial drugs, Azithromycin, Niclosamide, and Nitazoxanide showed a promising ability to hinder the replication of a SARS-CoV-2 isolate, with IC50 of 0.32, 0.16, and 1.29 μM, resp. We provided evidence that several antihistamine and anti-inflammatory drugs could partially reduce SARS-CoV-2 replication in vitro. Furthermore, this study showed that Azithromycin can selectively impair SARS-CoV-2 replication, but not the Middle East Respiratory Syndrome Coronavirus (MERS-CoV). A virtual screening study illustrated that Azithromycin, Niclosamide, and Nitazoxanide bind to the main protease of SARS-CoV-2 (Protein data bank (PDB) ID: 6lu7) in binding mode similar to the reported co-crystalized ligand. Also, Niclosamide displayed hydrogen bond (HB) interaction with the key peptide moiety GLN: 493A of the spike glycoprotein active site. (4) Conclusions: The results suggest that Piroxicam should be prescribed in combination with Azithromycin for COVID-19 patients.

Pharmaceuticals published new progress about Analgesics. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Application of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate.

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