Month: November 2022

On May 15, 2020, Garcia, Anthony D.; Leech, Matthew C.; Petti, Alessia; Denis, Camille; Goodall, Iain C. A.; Dobbs, Adrian P.; Lam, Kevin published an article.Name: (Trimethoxymethyl)benzene The title of the article was Anodic Oxidation of Dithiane Carboxylic Acids: A Rapid and Mild Way to Access Functionalized Orthoesters. And the article contained the following:

A new electrochem. methodol. has been developed for the preparation of a wide variety of functionalized orthoesters under mild and green conditions from easily accessible dithiane derivatives The new methodol. also offers an unprecedented way to access tri(fluorinated) orthoesters, a class of compound that has never been studied before. This provides the community with a rapid and general method to prepare libraries of functionalized orthoesters from simple and readily available starting materials. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).Name: (Trimethoxymethyl)benzene

The Article related to dithianecarboxylic acid alc electrochem oxidation orthoesterification green chem, ortho ester preparation, Aliphatic Compounds: Ethers and Sulfides and other aspects.Name: (Trimethoxymethyl)benzene

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

Nedaei, Maryam; Zarei, Ali Reza; Ghorbanian, Sohrab Ali published an article in 2018, the title of the article was Development of a new emulsification microextraction method based on solidification of settled organic drop: application of a novel ultra-hydrophobic tailor-made deep eutectic solvent.Recommanded Product: 118-55-8 And the article contains the following content:

In this research, a new microextraction method based on the solidification of settled organic drop (SSOD) was developed by coupling a novel tailor-made ultra-hydrophobic deep eutectic solvent (DES) with effervescence assisted emulsification microextraction The deep eutectic solvent of salol/DL-menthol (1 : 1) was used as an extraction solvent in this study. It has a low melting/f.p., low viscosity, ultra-hydrophobicity and bio-compatibility. An effervescent tablet was prepared by mixing the DES and effervescence precursors. Generation of CO2 bubbles due to effervescence distributes the DES homogenously into an aqueous sample, which enhances the mass transfer for target analytes to extract into the fine DES droplets. After centrifugation of the cloudy solution at 20 °C, the settled solidified extractant was isolated from the aqueous solution simply by decanting the tube. Predominant exptl. variables affecting the extraction efficiency of explosives were evaluated. This method was coupled with high performance liquid chromatog.-ultra violet detection for the anal. of nitroarom. compounds Under the optimized conditions, the limits of detection achieved were in the range of 0.03-0.05 μg L-1. The enrichment factors were between 576 and 702 and the relative standard deviations were <10%. The anal. of eight nitroarom. pollutants in water samples gave acceptable recoveries ranging from 89 to 105%. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Recommanded Product: 118-55-8

The Article related to emulsification microextraction solidification nitroarom detection water, explosive nitroarom detection water microextraction, Organic Analytical Chemistry: Detections and other aspects.Recommanded Product: 118-55-8

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

On May 1, 2021, Kuhlmann, Laura; Goeen, Thomas; Eckert, Elisabeth published an article.Related Products of 3319-31-1 The title of the article was Sensitive monitoring of the main metabolites of tri-(2-ethylhexyl) trimellitate (TOTM) in urine by coupling of on-line SPE, UHPLC and tandem mass spectrometry. And the article contained the following:

Tri-(2-ethylhexyl) trimellitate (TOTM or TEHTM) is a substitute for the plasticizer di-(2-ethylhexyl) phthalate (DEHP). Here, a fast and sensitive UHPLC-MS/MS method is presented enabling the simultaneous quantification of the six main TOTM metabolites in urine. These include the primary metabolites 1-MEHTM and 2-MEHTM (1-/2-mono-(2-ethylhexyl) trimellitate) and two oxidized metabolites of each to ensure a precise determination and comparison of the regioselective pathways. The method is based on online enrichment of the analytes after enzymic hydrolysis with subsequent UHPLC separation and tandem mass spectrometry using isotopically labeled internal standards The method is distinguished by its high sensitivity with detection limits ranging from 0.01 to 0.04μg/l and a proficient precision with relative standard deviations well below 10% for each analyte. The application of UHPLC-MS/MS anal. proved to significantly enhance the sensitivity of the method due to the efficient separation of the regioisomeric structures of the TOTM metabolites considered. Addnl., a proficient repeatability and recovery was achieved by the use of structurally identical isotopically labeled internal standard substances. The method was successfully applied to urine samples of infant patients indicating urinary levels of the TOTM metabolites examined in a very low concentration range. The experimental process involved the reaction of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate(cas: 3319-31-1).Related Products of 3319-31-1

The Article related to sensitive monitoring metabolite urine tandem mass spectrometry, biomarker, biomonitoring, medical devices, plasticizer, tehtm, urine, Toxicology: Methods (Including Analysis) and other aspects.Related Products of 3319-31-1

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

On February 28, 2018, Kamata, Ryo; Nakajima, Daisuke; Shiraishi, Fujio published an article.SDS of cas: 118-55-8 The title of the article was Agonistic effects of diverse xenobiotics on the constitutive androstane receptor as detected in a recombinant yeast-cell assay. And the article contained the following:

The constitutive androstane receptor (CAR) is a nuclear receptor and transcription factor regulating proteins involved in xenobiotic metabolism Agonist activation of the CAR can trigger metabolic activation and toxification as well as detoxification and clearance; accordingly, xenobiotic substances acting as CAR ligands may pose a threat to human and animal health. The authors used yeast cells transduced with the human CAR and the response pathway to measure the CAR-agonistic activities of 549 synthetic or natural compounds: 216 of the tested compounds exhibited CAR-agonistic effects. Eighty-four percent of CAR-activating compounds were aromatic compounds, and >65% of these active compounds were aromatic hydrocarbons, bisphenols, monoalkyl phenols, phthalates, styrene dimers, di-Ph ethers, organochlorines, and organophosphates. The ten most potent compounds were 4-tert-octylphenol (4tOP; reference substance), 4-nonylphenol, diethylstilbestrol, benzyl Bu phthalate, 2-(4-hydroxyphenyl)-2,4,4-trimethylchroman, o,p’-DDT, methoxychlor, di-Pr phthalate, hexestrol, and octachlorostyrene. The activities of these nine non-reference compounds exceeded 10% of the 4tOP activity. Anal. of para-monoalkyl phenols suggests that branching of the alkyl group and chlorination at the ortho position raises potency. This study provides critical information for identifying the potential of CAR-mediated toxic hazards and for understanding the relevant mechanism. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).SDS of cas: 118-55-8

The Article related to xenobiotic constitutive androstane receptor, alkyl phenol, bisphenol, constitutive androstane receptor, organochlorine, recombinant yeast, styrene dimer, Toxicology: Methods (Including Analysis) and other aspects.SDS of cas: 118-55-8

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

On January 31, 2016, Chen, Xian-Hua; Ma, Li; Hu, Yi-Xiang; Wang, Dan-Xian; Fang, Li; Li, Xue-Lai; Zhao, Jin-Chuan; Yu, Hai-Rong; Ying, Hua-Zhong; Yu, Chen-Huan published an article.HPLC of Formula: 3319-31-1 The title of the article was Transcriptome profiling and pathway analysis of hepatotoxicity induced by tris (2-ethylhexyl) trimellitate (TOTM) in mice. And the article contained the following:

Tris (2-ethylhexyl) trimellitate (TOTM) is commonly used as an alternative plasticizer for medical devices. But very little information was available on its biol. effects. In this study, the authors investigated toxicity effects of TOTM on hepatic differential gene expression analyzed by using high-throughput sequencing anal. for over-represented functions and phenotypically anchored to complementary histopathol., and biochem. data in the liver of mice. Among 1668 candidate genes, 694 genes were up-regulated and 974 genes were down-regulated after TOTM exposure. Using Gene Ontol. anal., TOTM affected three processes: the cell cycle, metabolic process and oxidative activity. Furthermore, 11 key genes involved in the above processes were validated by real time PCR. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway anal. revealed that these genes were involved in the cell cycle pathway, lipid metabolism and oxidative process. It revealed the transcriptome gene expression response to TOTM exposure in mouse, and these data could contribute to provide a clearer understanding of the mol. mechanisms of TOTM-induced hepatotoxicity in human. The experimental process involved the reaction of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate(cas: 3319-31-1).HPLC of Formula: 3319-31-1

The Article related to tris ethylhexyl trimellitate hepatotoxicity transcriptome, cell cycle, cytochrome p450, digital gene expression profiling, lipid metabolism, oxidative process, Toxicology: Methods (Including Analysis) and other aspects.HPLC of Formula: 3319-31-1

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

On April 30, 2020, Bentley, Mark C.; Almstetter, Martin; Arndt, Daniel; Knorr, Arno; Martin, Elyette; Pospisil, Pavel; Maeder, Serge published an article.Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one The title of the article was Comprehensive chemical characterization of the aerosol generated by a heated tobacco product by untargeted screening. And the article contained the following:

Abstract: A suite of untargeted methods has been applied for the characterization of aerosol from the Tobacco Heating System 2.2 (THS2.2), a heated tobacco product developed by Philip Morris Products S.A. and commercialized under the brand name IQOS. A total of 529 chem. constituents, excluding water, glycerin, and nicotine, were present in the mainstream aerosol of THS2.2, generated by following the Health Canada intense smoking regimen, at concentrations ≥ 100 ng/item. The majority were present in the particulate phase (n = 402), representing more than 80% of the total mass determined by untargeted screening; a proportion were present in both particulate and gas-vapor phases (39 compounds). The identities for 80% of all chem. constituents (representing > 96% of the total determined mass) were confirmed by the use of authentic anal. reference materials. Despite the uncertainties that are recognized to be associated with aerosol-based untargeted approaches, the reported data remain indicative that the uncharacterized fraction of TPM generated by THS2.2 has been evaluated to the fullest practicable extent. To the best of our knowledge, this work represents the most comprehensive chem. characterization of a heated tobacco aerosol to date. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one

The Article related to aerosol heated tobacco product untargeted screening, aerosol, chemical characterization, gc×gc-tofms, heated tobacco product, lc-hram-ms, untargeted screening, Toxicology: Methods (Including Analysis) and other aspects.Application In Synthesis of 3-Acetyldihydrofuran-2(3H)-one

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

Carboni, Michael; Lin, Zekai; Abney, Carter W.; Zhang, Teng; Lin, Wenbin published an article in 2014, the title of the article was A Metal-Organic Framework Containing Unusual Eight-Connected Zr-Oxo Secondary Building Units and Orthogonal Carboxylic Acids for Ultra-sensitive Metal Detection.COA of Formula: C22H19NO4 And the article contains the following content:

Two metal-organic frameworks (MOFs) with Zr-oxo secondary building units (SBUs) were prepared by using p,p’-terphenyldicarboxylate (TPDC) bridging ligands pre-functionalized with orthogonal succinic acid (MOF-1) and maleic acid groups (MOF-2). Single-crystal x-ray structure anal. of MOF-1 provides the 1st direct evidence for eight-connected SBUs in UiO-type MOFs. But MOF-2 contains twelve-connected SBUs as seen in the traditional UiO MOF topol. These structural assignments were confirmed by extended x-ray absorption fine structure (EXAFS) anal. The highly porous MOF-1 is an excellent fluorescence sensor for metal ions with the detection limit of <0.5 ppb for Mn2+and three to four orders of magnitude greater sensitivity for metal ions than previously reported luminescent MOFs. The experimental process involved the reaction of Dimethyl 2'-amino-[1,1':4',1''-terphenyl]-4,4''-dicarboxylate(cas: 1312703-30-2).COA of Formula: C22H19NO4

The Article related to metal organic framework zirconium oxo orthogonal carboxylic acid, crystal structures, fluorescence sensing, functionalization, metal sensing, metal-organic frameworks, Inorganic Analytical Chemistry: Reagents and other aspects.COA of Formula: C22H19NO4

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

Boughendjioua, Hicham; Boughendjioua, Zahra published an article in 2017, the title of the article was Chemical composition and biological activity of essential oilof mandarin (Citrus reticulata) cultivated in Algeria.Quality Control of Methyl N-Methylanthranilate And the article contains the following content:

In the present study, the volatile compounds of Citrus reticulata were detected and identified by GC-MS and FTIR anal. GC-MS allowed us to identify 24 volatile compounds and indicated that the main compounds constituting the volatile oil were mainly Limonene (67.04%), γ-Terpinene (15.50%) and α-Pinene (2.75%), this compounds were also identified by FTIR anal. The essential oil was also subjected to a biol. screening for its possible antioxidant effect by means of DPPH radical scavenging test; the sample tested showed slight antioxidant activity in comparison with the pos. control (Ascorbic acid). Citrus reticulata essential oil was examined also against a panel of 16 bacterial strains using the agar diffusion method. The obtained results showed that the essential oil exhibited moderate to strong antimicrobial activity against the tested microorganisms. These results suggested that the Citrus reticulata essential oil possesses a good antimicrobial and antioxidant properties. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Quality Control of Methyl N-Methylanthranilate

The Article related to citrus essential oil biol activity algeria, Pharmaceuticals: Pharmacognostic Products and other aspects.Quality Control of Methyl N-Methylanthranilate

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

On February 28, 2021, Stasse, Margot; Ribaut, Tiphaine; Heroguez, Valerie; Schmitt, Veronique published an article.Name: Methyl N-Methylanthranilate The title of the article was Elaboration of double emulsion-based polymeric capsules for fragrance. And the article contained the following:

Abstract: We aim at encapsulating fragrances made of a variety of lipophilic species to slow down their diffusion. Our strategy is to develop capsules by polymerizing the water intermediate phase of an oil-in-water-in-oil double emulsion. In other terms, our system consists in a direct emulsion of fragrance (O1) in a water phase (W) containing monomer, initiator, and cross-linker. To obtain the double emulsion, this direct emulsion, stabilized by a hydrophilic surfactant, is itself dispersed in an external lipophilic solvent used in perfumery (O2) and stabilized by a lipophilic surfactant. Polymerization of the intermediate water phase aims at obtaining a 3D network. Differently from nowadays-proposed capsules, this strategy allows polymerization only taking place in the water phase rather in the phase containing the fragrance. Moreover, the obtained 3D network is supposed to play the role of an effective barrier limiting the diffusion of the inner lipophilic species towards either the external solvent or air. Such an approach implies the combination of a formulation step to elaborate the double emulsion using two antagonistic surfactants, a hydrophilic one and a lipophilic one, and of the polymerization of the intermediate phase. Insertion of the polymerizable species in the double emulsion shall not destabilize it. Some monomers exhibiting interfacial affinity and interfering with the formulation of the double emulsion have to be avoided. By varying the nature of the monomers and the cross-linker to monomer ratio, capsules with high encapsulation efficiencies and with various mech. properties have been obtained. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).Name: Methyl N-Methylanthranilate

The Article related to double emulsion polymeric capsule fragrance, Essential Oils and Cosmetics: Dentifrices and other aspects.Name: Methyl N-Methylanthranilate

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

On April 30, 2022, Davies, C.; Bottcher, C.; Nicholson, E. L.; Burbidge, C. A.; Boss, P. K. published an article.Product Details of 123-25-1 The title of the article was Timing of auxin treatment affects grape berry growth, ripening timing and the synchronicity of sugar accumulation. And the article contained the following:

Climate change has resulted in earlier berry development and compressed harvests creating problems with harvesting and winery logistics and causing undesired modifications to grape and wine composition, such as elevated concentration of berry sugar and wine alc. Auxin treatment of grapevine bunches prior to veraison can counteract these adverse changes by delaying berry maturation. The most efficacious timing of 1-naphthaleneacetic acid (NAA) application along with the effects of application timing on berry growth, and berry and wine composition are yet to be identified. Cabernet Sauvignon bunches were treated with 50 mg/L NAA at three different times prior to, and at, veraison. The nearer to veraison the NAA application the longer the delay in harvest. Compared with the Control the NAA treatment reduced berry shrivel and increased the synchronicity of berry populations in terms of the accumulation of TSS with only minor effects on berry composition and wine volatile compounds Auxin treatment delayed ripening, reduced berry shrivel and increased ripening synchronicity with little effect on berry and wine composition Auxin treatment of grape bunches could be used to manage problems caused by climate change, including, compressed harvests and ripening under hotter conditions, in a targeted manner in existing vineyards. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Product Details of 123-25-1

The Article related to grape berry growth ripening sugar synchronicity auxin treatment, Plant Biochemistry: Development and Aging and other aspects.Product Details of 123-25-1

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