Tag: 100-200

On December 31, 2022, Strub, Daniel Jan; Talma, Michal; Strub, Maria; Rut, Wioletta; Zmudzinski, Mikolaj; Brud, Wladyslaw; Neyts, Johan; Vangeel, Laura; Zhang, Linlin; Sun, Xinyuanyuan; Lv, Zongyang; Nayak, Digant; Olsen, Shaun K.; Hilgenfeld, Rolf; Jochmans, Dirk; Drag, Marcin published an article.Related Products of 85-91-6 The title of the article was Evaluation of the anti-SARS-CoV-2 properties of essential oils and aromatic extracts. And the article contained the following:

Abstract: Essential oils and aromatic extracts (oleoresins, absolutes, concretes, resinoids) are often used as food flavorings and constituents of fragrance compositions The flavor and fragrance industry observed significant growth in the sales of some natural materials during the COVID-19 outbreak. Some companies worldwide are making false claims regarding the effectiveness of their essential oils or blends (or indirectly point toward this conclusion) against coronaviruses, even though the available data on the activity of plant materials against highly pathogenic human coronaviruses are very scarce. Our exploratory study aimed to develop pioneering knowledge and provide the first exptl. results on the inhibitory properties of hundreds of flavor and fragrance materials against SARS-CoV-2 main and papain-like proteases and the antiviral potential of the most active protease inhibitors. As essential oils are volatile products, they could provide an interesting therapeutic strategy for subsidiary inhalation in the long term. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Related Products of 85-91-6

The Article related to essential oils aromatic extract sarscov2 antiviral, Placeholder for records without volume info and other aspects.Related Products of 85-91-6

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

On November 30, 2020, Karabagias, Ioannis K.; Sykalia, Dionysia; Mannu, Alberto; Badeka, Anastasia V. published an article.Application In Synthesis of Diethyl succinate The title of the article was Physico-chemical parameters complemented with aroma compounds fired up the varietal discrimination of wine using statistics. And the article contained the following:

Wine comprises a beloved food and human companion since the early times of humans on earth. In this study, wine samples of different type (red, white, and rose) and variety (Agiorgitiko, Augoustiatis, Cabernet Sauvignon, Syrah, Vlahiko, Assyrtiko, Chardonnay, Debina, Moschofilero, Vidiano, Syrah plus Mandilari, and Xinomavro) were subjected to physico-chem. and aroma compounds analyses, in an effort to characterize their identity and discriminate these samples according to variety using statistics. Results showed significant differences (p < 0.05) for wine samples of different variety in regard to the measured physico-chem. parameters (pH, elec. conductivity, total dissolved solids, salinity, L*, a*, b*, and Chroma*) and aroma compounds (alcs., esters, phenolic compounds, pyran compounds, and terpenoids/norisoprenoids). Application of multivariate anal. of variance, linear discriminant anal., and weighted least-squares regression anal. fired up the perfect varietal discrimination (100%) of wine samples and modeling of results, contributing to new information in the literature about the identity of these wine varieties. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Application In Synthesis of Diethyl succinate

The Article related to wine elec conductivity phenolic compound salinity, Placeholder for records without volume info and other aspects.Application In Synthesis of Diethyl succinate

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

Kumari, Aruna; Sharma, R. A. published an article in 2022, the title of the article was GC-MS analysis of the methanol fraction of Ailanthus excelsa Roxb. fruit.SDS of cas: 517-23-7 And the article contains the following content:

The objective of the study was to evaluate the phytochem. compounds present in the methanolic fruit extract of Ailanthus excelsa. Phytochem. screening was carried out using the GC-MS instrument following the standard protocol. GC-MS studies revealed the presence of 65 compounds in fruit extract of Ailanthus excelsa. Among them, highest peak area (37.67%) was obtained for Mome Inositol (Six hydroxyl group polysaccharide) (Retention time 14.873). This study identifies the presence of pharmacol. active compounds which can be constructive for the formulation of novel drugs. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).SDS of cas: 517-23-7

The Article related to ailanthus excelsa fruit methanol fraction gc ms, Placeholder for records without volume info and other aspects.SDS of cas: 517-23-7

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

On April 19, 2022, Peterson, Joshua W.; Burt, Scott R.; Yuan, Yu; Harper, James K. published an article.Quality Control of (Trimethoxymethyl)benzene The title of the article was Rapid, quantitative nuclear magnetic resonance test for oxygen-17 enrichment in water. And the article contained the following:

NMR (NMR) studies involving 17O are increasingly important in mol. biol., material science, and other disciplines. A large number of these studies employ H217O as a source of 17O, and this reliance can be limiting because the high cost of H217O. To overcome this constraint, a recent study proposed a distillation scheme capable of producing significant quantities of H217O at a low cost. Although this method is reported to be effective, the reactions proposed to quantify percent of 17O enrichment are either time intensive or have a risk of errors due to the isotope effect. Here, an alternative reaction scheme is described to measure 17O water that ultimately creates Me benzoate as the sole 17O-containing product. The proposed reaction is completed in a matter of minutes at room temperature, produces only one 17O product, and requires no clean-up step. The large isotope shift observed in solution NMR between the 13C=16O and 13C=17O resonances allows for integration of the individual peaks. This 13C NMR anal. is found to be highly accurate over a wide enrichment range and is accessible to most NMR spectroscopists. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Quality Control of (Trimethoxymethyl)benzene

The Article related to rapid quant nmr test oxygen enrichment water, Placeholder for records without volume info and other aspects.Quality Control of (Trimethoxymethyl)benzene

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

Sulzbach, Manuela; Silva, Magnolia Aparecida Silva da; Gonzatto, Mateus Pereira; Marques, Marcia Mayo Ortiz; Boettcher, Gerson Nestor; Silvestre, Wendel Paulo; Silvad, Julio Cesar Rodrigues Lopes; Pauletti, Gabriel Fernandes; Schwarz, Sergio Francisco published an article in 2021, the title of the article was Effect of distillation methods on the leaf essential oil of some Citrus cultivars.Computed Properties of 85-91-6 And the article contains the following content:

This study aimed to characterize the chem. composition of the leaf essential oil (EO) of mandarin and tangor trees obtained by steam distillation and hydrodistillation Leaf samples were collected during the pruning period from seven citrus cultivars in a property located in Pareci Novo, Rio Grande do Sul state, South Brazil. The leaves underwent hydrodistillation and steam distillation, and the obtained EO was analyzed by GC-MS and GC-FID. In general, the Citrus deliciosa mandarins had higher EO yields than the ′Ponkan′ and tangors in both methods. The Citrus deliciosa mandarin trees presented higher amounts of Me N-Me anthranilate and γ-terpinene. In the EO of ′Ponkan′, ′URSBRS Hada′ and ′Murcott′, there was a predominance of linalool and terpinen-4-ol. The extraction method influenced the contents of the compounds mainly, while the genetic factors determined the variations in the composition of the essential oil of citrus leaves. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Computed Properties of 85-91-6

The Article related to citrus leaf essential oil distillation, Placeholder for records without volume info and other aspects.Computed Properties of 85-91-6

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

On October 11, 2021, Mommer, Stefan; Gehlen, David; Akagi, Takami; Akashi, Mitsuru; Keul, Helmut; Moeller, Martin published an article.Electric Literature of 6038-19-3 The title of the article was Thiolactone-Functional Pullulan for In Situ Forming Biogels. And the article contained the following:

Gelation in the presence of cells with min. cytotoxicity is highly desirable for materials with applications in tissue engineering. Herein, the naturally occurring polysaccharide pullulan is functionalized with thiolactones that undergo ring-opening addition of amines. As a result, the modified pullulan can be crosslinked with diamines and/or amine-containing biol. substrates enhancing the system′s versatility (e.g., gelatin and cell-binding ligands GHK/GRGDS). Thiolactone degrees of substitution of 2.5 or 5.0 mol % are achieved, and resp. hydrogels exhibit mesh sizes of 27.8 to 49.1 nm. Cell proliferation studies on chosen gels (G′ ≃ 500 Pa, over 14 days) demonstrate that for normal human dermal fibroblasts (NHDFs), both gelatin and GRGDS equally support cell proliferation, while in the case of hepatocytes (HepG2), the presence of GRGDS and GHK improve cell proliferation 10-fold compared to gelatin. Cells remain viable and in one instance were successfully encapsulated by in situ gelation, altogether confirming the mild and biocompatible nature of this strategy to produce biogels using biol. active substrates as crosslinkers. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).Electric Literature of 6038-19-3

The Article related to thiolactone pullulan in situ biogel, Placeholder for records without volume info and other aspects.Electric Literature of 6038-19-3

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

On October 11, 2022, Aljuaid, Mohammed; Houck, Hannes A.; Efstathiou, Spyridon; Haddleton, David M.; Wilson, Paul published an article.COA of Formula: C4H8ClNOS The title of the article was Photocrosslinking of Polyacrylamides Using [2 + 2] Photodimerisation of Monothiomaleimides. And the article contained the following:

The [2 + 2] photocycloaddition of monothiomaleimides (MTMs) has been exploited for the photocrosslinking of polyacrylamides. Polymer scaffolds composed of dimethylacrylamide and varying amounts of D,L-homocysteine thiolactone acrylamide (5, 10, and 20 mol %) were synthesized via free-radical polymerization, whereby the latent thiol functionality was exploited to incorporate MTM motifs. Subsequent exposure to UV light (λ = 365 nm, 15 mW cm-2) triggered intermol. crosslinking via the photodimerization of MTM side chains, thus resulting in the formation of polyacrylamide gels. The polymer scaffolds were characterized using Fourier transform IR spectroscopy, UV-visible spectroscopy, 1H NMR spectroscopy, and size exclusion chromatog., confirming the occurrence of the [2 + 2] photocycloaddition between the MTM moieties. The mech. and phys. properties of the resulting gels containing various MTM mol % were evaluated by rheol., compression testing, and swelling experiments In addition, SEM was used to characterize the xerogel morphol. of 5 and 10 mol % MTM hydro- and organo-gels. The macro-porous morphol. obtained for the hydrogels was attributed to phase separation due to the difference in solubility of the PDMA modified with thiolactone side chains, provided that a more homogeneous morphol. was obtained when the photo-gels were prepared in DMF as the solvent. The experimental process involved the reaction of 3-Aminodihydrothiophen-2(3H)-one hydrochloride(cas: 6038-19-3).COA of Formula: C4H8ClNOS

The Article related to photocrosslinking polyacrylamide photodimerization monothiomaleimide, Placeholder for records without volume info and other aspects.COA of Formula: C4H8ClNOS

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

Zdun, Beata; Ciesla, Piotr; Kutner, Jan; Borowiecki, Pawel published an article in 2022, the title of the article was Expanding Access to Optically Active Non-Steroidal Anti-Inflammatory Drugs via Lipase-Catalyzed KR of Racemic Acids Using Trialkyl Orthoesters as Irreversible Alkoxy Group Donors.HPLC of Formula: 707-07-3 And the article contains the following content:

Studies into the enzymic kinetic resolution (EKR) of 2-arylpropanoic acids (′profens′), as the active pharmaceutical ingredients (APIs) of blockbuster non-steroidal anti-inflammatory drugs (NSAIDs), by using various trialkyl orthoesters as irreversible alkoxy group donors in organic media, were performed. The enzymic reactions of target substrates were optimized using several different immobilized preparations of lipase type B from the yeast Candida antarctica (CAL-B). The influence of crucial parameters, including the type of enzyme and alkoxy agent, as well as the nature of the organic co-solvent and time of the process on the conversion and enantioselectivity of the enzymic kinetic resolution, is described. The optimal EKR procedure for the racemic profens consisted of a Novozym 435-STREM lipase preparation suspended in a mixture of 3 equiv of tri-Me or tri-Et orthoacetate as alkoxy donor and toluene or n-hexane as co-solvent, depending on the employed racemic NSAIDs. The reported biocatalytic system provided optically active products with moderate-to-good enantioselectivity upon esterification lasting for 7-48 h, with most promising results in terms of enantiomeric purity of the pharmacol. active enantiomers of title APIs obtained on the anal. scale for: (S)-flurbiprofen (97% ee), (S)-ibuprofen (91% ee), (S)-ketoprofen (69% ee), and (S)-naproxen (63% ee), resp. In turn, the employment of optimal conditions on a preparative-scale enabled us to obtain the (S)-enantiomers of: flurbiprofen in 28% yield and 97% ee, ibuprofen in 45% yield and 56% ee, (S)-ketoprofen in 23% yield and 69% ee, and naproxen in 42% yield and 57% ee, resp. The devised method turned out to be inefficient toward racemic etodolac regardless of the lipase and alkoxy group donor used, proving that it is unsuitable for carboxylic acids possessing tertiary chiral centers. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).HPLC of Formula: 707-07-3

The Article related to arylpropanoic acid enzymic kinetic resolution lipase catalyzed nsaid, Placeholder for records without volume info and other aspects.HPLC of Formula: 707-07-3

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

Zhang, Jinglin; Li, Juan; Wang, Juan; Sun, Baoguo; Liu, Yuping; Huang, Mingquan published an article in 2021, the title of the article was Characterization of aroma-active compounds in Jasminum sambac concrete by aroma extract dilution analysis and odour activity value.Application of 85-91-6 And the article contains the following content:

Jasminum sambac is a flower and usually used in food, cosmetics or other chem. industries for its unique flavor characteristics in China. However, mol. sensory technologies have not applied to identify aroma-active compounds in J sambac concrete. In this study, gas chromatog.-olfactometry (GC-O), gas chromatog.-mass spectrometry and solvent-assisted flavor evaporation were applied to isolate the odorants in three Chinese J sambac concrete (E1, E2 and E3) obtained from different companies. A total of forty-nine, forty-eight, thirty-nine odorants were screened by GC-O with aroma extract dilution anal. in E1, E2 and E3, resp. The higher flavor dilution (FD) factors were linalool (19 683-59 049, floral), Me anthranilate (6561-19 683, grape-like) and benzyl acetate (2187-19 683, floral). Twenty-two aroma compounds were quantitated by gas chromatog.-flame ionization detection with internal standard, and then their odor activity values were obtained. Linalool, cis-3-hexenyl acetate, linalyl acetate, eugenol and Me salicylate contributed greatly to the aroma of J sambac concretes. The aroma recombination model was established by mixing twenty-two key odorants based on their measured concentrations, and the result revealed that the overall aroma profile was similar to that of the original sample. These results proved basic data for improvement of the national standard of jasmine concrete. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Application of 85-91-6

The Article related to linalool cis3hexanyl acetate eugenol aroma active compound jasminum, Placeholder for records without volume info and other aspects.Application of 85-91-6

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

On July 31, 2022, He, Fei; Yang, Shiqi; Zhang, Guihu; Xu, Ling; Li, Hehe; Sun, Jinyuan; Huang, Mingquan; Zheng, Fuping; Sun, Baoguo published an article.Application In Synthesis of Diethyl succinate The title of the article was Exploration of key aroma active compounds in strong flavor Baijiu during the distillation by modern instrument detection technology combined with multivariate statistical analysis methods. And the article contained the following:

Liquid-liquid microextraction (LLME) combined with gas chromatog.-mass spectrometry (GC-MS) and headspace-gas chromatog.-ion mobility spectrometry (HS-GC-IMS) were used to detect the variations in volatile compounds during the distillation process of strong flavor raw Baijiu. The 3D fingerprint spectrum clearly showed a variation in volatile compounds from different distillation stages, and most alc.-soluble and low mol. weight compounds showed a downward trend with the extension of distillation time, but water-soluble, high mol. weight and high boiling compounds showed the opposite result. Then, 50 aroma compounds were sniffed and identified by gas chromatog.-olfactometry-mass spectrometry (GC-O-MS) and multivariate statistical anal. including principal component anal. (PCA) and partial least squares discriminant anal. (PLS-DA) confirmed four aroma active markers related to classification. Finally, the receiver operating characteristic (ROC) curve was further used to verify that Et butanoate and Et hexanoate were the most effective difference marker to distinguish the head Baijiu samples and butanoic acid was the most effective difference marker for distinguishing the heart Baijiu samples from the tail Baijiu samples. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Application In Synthesis of Diethyl succinate

The Article related to hexyl hexanoate phenylacetaldehyde pentanoic acid ethyl linolenate, Placeholder for records without volume info and other aspects.Application In Synthesis of Diethyl succinate

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