Tag: 100-200

On December 31, 2018, Farag, Mohamed A.; Elmassry, Moamen M.; El-Ahmady, Sherweit H. published an article.Application In Synthesis of Methyl N-Methylanthranilate The title of the article was The characterization of flavored hookahs aroma profile and in response to heating as analyzed via headspace solid-phase microextraction (SPME) and chemometrics. And the article contained the following:

Flavors profiling in flavored hookah tobacco is an issue of increasing scrutiny for the health sector owing to its adverse effects on humans, especially being heated to produce smoke. This study aims at tackling the components involved in the flavored hookah tobacco from a chem. and biol. point of view. Detecting individual flavor compounds, within a complex hookah tobacco matrix was accomplished using headspace solid phase microextraction (SPME). A total of 114 volatiles were identified in 13 flavored hookah tobacco products, with esters amounting for the major component up to 40%. Whereas oxygenated monoterpenes presented another major volatile class, contributing up to 23%, including (E)-anethole. Superheating flavored hookah tobacco at 190°C resulted in the release of a mixture of phenol derivatives and polycyclic aromatic compounds that are indicative of coal tar, a major component produced during hookah tobacco usage with potential health hazards. This study provides the first comprehensive volatile profile of hookah tobacco products from different origins identifying chem. components involved in flavors. It is expected to serve as informative grounds for the better understanding of hookah tobacco production and usage. The information presented is also expected to raise awareness on the health risks of hookah tobacco smoking. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Application In Synthesis of Methyl N-Methylanthranilate

The Article related to flavored hookah heating aroma profile spme chemometrics, Toxicology: Other and other aspects.Application In Synthesis of Methyl N-Methylanthranilate

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

On June 30, 2017, Pan, Tingting; Xia, Chunguang; Jiang, Huijuan; Zhang, Zhongtang; Zhu, Xueyan; Yang, Yulei published an article.Category: esters-buliding-blocks The title of the article was Chemical synthesis of the ODM-201’s diastereomers through an efficient intramolecular 1,3-dipolar cycloaddition. And the article contained the following:

An efficient synthesis of ODM-201’s diastereomers has been developed from (R)-Me 3-hydroxybutanoate or (S)-Me 3-hydroxybutanoate, resp., with high overall yield and excellent diastereomeric purity. The key step in this synthesis is the preparation of the key intermediate (R)-5-(1-((tert-butyldimethylsilyl)oxy)ethyl)-1H-pyrazole-3-carboxylic acid or (S)-5-(1-((tert-butyldimethylsilyl)oxy)ethyl)-1H-pyrazole-3-carboxylic acid through intramol. 1,3-dipolar cycloaddition of the vinyl diazo carbonyl compounds The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Category: esters-buliding-blocks

The Article related to odm201 diastereomer chem synthesis intramol dipolar cycloaddition, odm-201, diastereomer, intramolecular 1,3-dipolar cycloaddition, synthesis, Pharmaceuticals: General and other aspects.Category: esters-buliding-blocks

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

Yang, Zhijun; Wang, Fenfen; Zhang, Chi; Li, Jian; Zhang, Rongchun; Wu, Qiang; Chen, Tiehong; Sun, Pingchuan published an article in 2019, the title of the article was Bio-inspired self-healing polyurethanes with multiple stimulus responsiveness.Product Details of 517-23-7 And the article contains the following content:

High-performance stimuli-responsive polymers that exhibit spontaneous, sophisticated and reversible responses to a wide range of external stimuli are highly desirable for applications in diverse fields and have attracted dramatic attention in recent decades. However, it still remains a great challenge to precisely design mol. architectures which can integrate multi-stimuli responsive functions into one structure in polymeric materials. In this study, we reported the synthesis and preparation of a novel multi-responsive self-healing polyurethane with superior mech. properties by adapting a stimuli-responsive dynamic covalent chem. crosslinker and a biomimetic modular polymer design. This unique crosslinker was synthesized through the Michael addition reaction between thiols and bismaleimides, making the chem. crosslinked polyurethanes healable and recyclable at an elevated temperature as well as stimuli-responsive to heat, pH and ammonia gas. A visible color change can be clearly observed when the polymer is in the base or ammonia gas environment, giving the sample great potential for being a gas or pH sensor. Furthermore, the incorporation of self-complementary quadruple hydrogen bonding interactions between 2-ureido-4-[1H]-pyrimidione (UPy) motifs in the polyurethane backbone chains enables the formation of modular hydrogen bonding domains, endowing the material with enhanced mech. properties. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Product Details of 517-23-7

The Article related to self healing polyurethane crosslinking stimulus responsiveness biomimicking, Pharmaceuticals: General and other aspects.Product Details of 517-23-7

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

Yan, Xiao-Tong; Su, Yong-Mei; Wang, Jian published an article in 2021, the title of the article was A mini-review on the biomarkers in essential oils from peels of Citrus Reticulata blanco and their antioxidant activities.COA of Formula: C9H11NO2 And the article contains the following content:

A review. Citrus reticulata Blanco belonging to Citrus of Rutaceare is an important economical fruit plants planted all over the world. Usually, its peels were discarded as waste while they are rich in bioactive compounds like essential oils (EOs). Up to now, more than 1000 compounds have been identified in EOs from peels, flowers, leaves of Citrus species. Among these compounds, fourteen biomarkers like Limonene, γ-Terpinene, p-Cymene, Linalool, Decanal, Thymol, α-Farnesene, Me methanthranilate, Tricosane, α-Terpineol, Terpinene-4-ol, Spathulenol, α-Sinensal, and n-Hexadecanoic acid were selected from hundreds of compounds identified in essential oils from peels of Citrus reticulata Blanco by us. The antioxidant activities is an important biol. activities of these EOs, and more and more attention were focused on them these years. At the same time, the antioxidant activities of these EOs and those biomarkers were summarized in this paper. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).COA of Formula: C9H11NO2

The Article related to review citrus reticulata peel essential oil biomarker antioxidant activity, Pharmaceuticals: Reviews and other aspects.COA of Formula: C9H11NO2

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

Wang, Lixiang; Zhang, Yanli; Kiprowska, Magdalena; Guo, Yuqi; Yamamoto, Ken; Li, Xin published an article in 2021, the title of the article was Diethyl Succinate Modulates Microglial Polarization and Activation by Reducing Mitochondrial Fission and Cellular ROS.Computed Properties of 123-25-1 And the article contains the following content:

Succinate is a metabolite in the tricarboxylic acid cycle (TCA) which plays a central role in mitochondrial activity. Excess succinate is known to be transported out of the cytosol, where it activates a succinate receptor (SUCNR1) to enhance inflammation through macrophages in various contexts. In addition, the intracellular role of succinate beyond an intermediate metabolite and prior to its extracellular release is also important to the polarization of macrophages. However, the role of succinate in microglial cells has not been characterized. Lipopolysaccharide (LPS) stimulates the elevation of intracellular succinate levels. To reveal the function of intracellular succinate associated with LPS-stimulated inflammatory response in microglial cells, we assessed the levels of ROS, cytokine production and mitochondrial fission in the primary microglia pretreated with cell-permeable di-Et succinate mimicking increased intracellular succinate. Our results suggest that elevated intracellular succinate exerts a protective role in the primary microglia by preventing their conversion into the pro-inflammatory M1 phenotype induced by LPS. This protective effect is SUCNR1-independent and mediated by reduced mitochondrial fission and cellular ROS production The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Computed Properties of 123-25-1

The Article related to diethyl succinate microglial polarization activation mitochondrial fission cellular ros, lps, dynamin-related protein, microglia, mitochondrial fission, succinate, Animal Nutrition: Other and other aspects.Computed Properties of 123-25-1

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

On July 31, 2020, Mekki, Amel; Benmaati, Aouicha; Mokhtar, Adel; Hachemaoui, Mohammed; Zaoui, Farouk; Habib Zahmani, Hadjira; Sassi, Mohamed; Hacini, Salih; Boukoussa, Bouhadjar published an article.Category: esters-buliding-blocks The title of the article was Michael Addition of 1,3-Dicarbonyl Derivatives in the Presence of Zeolite Y as an Heterogeneous Catalyst. And the article contained the following:

This paper focuses on the preparation and modification of zeolite Y by different methods. The obtained samples were characterized by X-ray diffraction, X-ray fluorescence, nitrogen adsorption-desorption and zeta potential measurements. The obtained catalysts were tested in the Michael addition reaction. Several parameters affecting the Michael reaction such as the catalyst nature, catalyst mass, solvent and to generalize the reaction several acceptors were tested. The results showed that zeolite Y had a larger sp. surface area, but their modified counterparts showed weak surfaces due to the partial destruction of zeolite framework after the different treatments. The catalytic application of zeolite Y and its modified counterparts had shown interesting results via the addition of Michael with yields between 70 and 100%. Reuse of zeolite Y in several cycles showed that this catalyst was stable during six consecutive reuse tests. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Category: esters-buliding-blocks

The Article related to zeolite y catalyst preparation surface area, dicarbonyl unsaturated compound zeolite y michael addition microwave irradiation, Alicyclic Compounds: General and other aspects.Category: esters-buliding-blocks

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

On April 1, 2022, Kim, Taeok; Bell, Michael R.; Thota, V. Narasimharao; Lowary, Todd L. published an article.SDS of cas: 707-07-3 The title of the article was One-Pot Regioselective Diacylation of Pyranoside 1,2-cis Diols. And the article contained the following:

A one-pot strategy for functionalizing pyranoside 1,2-cis-diols with two different ester protecting groups is reported. The approach employs regioselective acylation via orthoester hydrolysis promoted by a carboxylic acid, e.g., levulinic acid, acetic acid, benzoic acid, or chloroacetic acid. Upon removal of water and introduction of a coupling agent, the carboxylic acid is esterified to the hydroxyl group liberated during hydrolysis. Although applied to 1,2-cis-diols on pyranoside scaffolds, the method should be applicable to such motifs on any six-membered ring. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).SDS of cas: 707-07-3

The Article related to carboxylic acid catalyst regioselective acylation hydrolysis protecting group coupling, hydrolysis regioselective diacylation pyranoside diol ester protecting group, Carbohydrates: Glycosides and other aspects.SDS of cas: 707-07-3

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

Korenika, Ana-Marija Jagatic; Preiner, Darko; Tomaz, Ivana; Jeromel, Ana published an article in 2020, the title of the article was Volatile profile characterization of croatian commercial sparklingwines.Name: Diethyl succinate And the article contains the following content:

Com. sparkling wine production represents a relatively low but important part of the Croatian wine production, especially in the Zagreb county. This study presents the results of volatile aroma compounds profile and organic acid composition of com. sparkling wine samples from three vine-growing regions in Zagreb county. In total, 174 volatile aroma compounds were identified, separated between their chem. classes (aldehydes, higher alcs., volatile phenols, terpenes, C13-norisoprenoids, lactones, esters, fatty acids, sulfur compounds, other compounds, other alcs.). Higher alcs. such as phenylethyl and isoamyl alc. as well as 2-methyl-1-butanol, and esters such as di-Et succinate, Et hydrogensuccinate, and Et lactate had the strongest impact on the volatile compounds profile of Zagreb county sparkling wine. The presence of di-Et glutarate and di-Et malonate, compounds whose concentrations are influenced by yeast autolysis or caused by chem. esterification during the ageing process, was also noted. The influence of every single volatile aroma compound was evaluated by discriminant anal. using forward stepwise model. The volatile profiles of traditional sparkling wines from Croatia were presented for the first time. It is hoped the results will contribute to better understanding the quality potential and to evaluate possible differences on the bases of detected aroma concentrations and multivariate anal. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Name: Diethyl succinate

The Article related to croatian sparkling wine production aroma compound, zagreb county, discriminant analysis, sparkling wines, volatile aroma compounds, Food and Feed Chemistry: Other and other aspects.Name: Diethyl succinate

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

Mancuso, Monique; Catalfamo, Maurizio; Lagana, Pasqualina; Rappazzo, Alessandro Ciro; Raymo, Vilfredo; Zampino, Daniela; Zaccone, Renata published an article in 2019, the title of the article was Screening of antimicrobial activity of citrus essential oils against pathogenic bacteria and Candida strains.Recommanded Product: 85-91-6 And the article contains the following content:

Several studies have indicated that plants are good sources of antimicrobial agents and pharmaceuticals. The present study is focused to evaluate the antimicrobial potential of 11 citrus essential oils (EOs) and terpenes (T), against 18 bacterial pathogenic strains and 4 Candida sp. strains. Volatile compounds present in the citrus EOs were determined by a gas chromatog. anal., allowing the identification of 79 components. Results highlights that lemon, bergamot oil and terpene were effective against more than 54.5% of tested bacteria. Candida spp. strains resulted very sensitive to all terpenes and EOs. Gram neg. bacteria showed lower sensitivity than Gram pos. ones. Among Gram neg., fish pathogens were sensitive to oils, so we suggested their use as possible alternatives in aquaculture farms to prevent bacterial fish diseases. Moreover, results suggested that citrus oils could be a useful tool in the food industry to prolong the shelf-life. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Recommanded Product: 85-91-6

The Article related to citrus candida staphylococcus escherichia essential oil antimicrobial octanal myrcene, Food and Feed Chemistry: Other and other aspects.Recommanded Product: 85-91-6

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

On May 31, 2021, Farag, Mohamed A.; Fathi, Doaa; Shamma, Samir; Shawkat, Mohamed Sherif A.; Shalabi, Sohir M.; El Seedi, Hesham R.; Afifi, Sherif M. published an article.Reference of Methyl N-Methylanthranilate The title of the article was Comparative metabolome classification of desert truffles Terfezia claveryi and Terfezia boudieri via its aroma and nutrients profile. And the article contained the following:

Desert truffles are popular ectomycorrhizal fungi valued worldwide for their nutritional and traditional health benefits. Herein, two chief desert truffles viz., Terfezia claveryi and T. boudieri were assessed for their metabolites heterogeneity in context of their volatile sensory and nutrients profile as analyzed via GC-MS. Primary metabolites accounting for nutritive indexes in T. claveryi and T. boudieri were investigated with 61 peaks belonging to sugars, sugar alcs. and amino acids. After headspace solid-phase microextraction (HS-SPME), a total of 106 volatiles were annotated belonging to alcs., ketones, aldehydes, esters, ethers and furans. The abundance of oxygenated monoterpenes as antimicrobials rationalizes for the folk use of desert truffles against trachoma. Benzyl isothiocyanate was detected as the sulfur containing volatile component in desert truffle and absent from truffles. Multivariate data analyses (MVA) revealed that 1-octen-3-ol and 3-octanone were the most significantly contributors in the discrimination of T. claveryi and T. boudieri specimens. Being more enriched in essential amino acids, T. claveryi provided a better sugar diet composition concurrent with lower sugars and higher sugar alcs. compared to T. boudieri. This study provides the first insight into desert truffles metabolites and sensory composition, and to account for its culinary and medicinal uses. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Reference of Methyl N-Methylanthranilate

The Article related to terfezia claveryi boudieri metabolome classification aroma nutrient profile, Food and Feed Chemistry: Other and other aspects.Reference of Methyl N-Methylanthranilate

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