110-03-2 Archives - Page 3 of 6 - Alcohols-buliding-blocks

Hintz, Heather A. et al. published new progress in experiments with the help of cas: 110-03-2

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) is used as an intermediate in the preparation of 2.5-Dimethyl-2.5-bis(tertbutyl-peroxy)hexane. It is also used in the synthesis of six- and seven-membered heterocyclic boron compounds.Name: 2,5-Dimethyl-2,5-hexanediol

Name: 2,5-Dimethyl-2,5-hexanediol《The synthesis of lactone-bridged 1,3,5-triphenylbenzene derivatives as pi-expanded coumarin triskelions》 was published in 2017. The authors were Hintz, Heather A.;Sortedahl, Nicholas J.;Meyer, Samantha M.;Decato, Daniel A.;Dahl, Bart J., and the article was included in《Tetrahedron Letters》. The author mentioned the following in the article:

Two triply lactone-bridged 1,3,5-triphenylbenzene derivatives I and II with solubilizing moieties were synthesized in five and six steps from com. available starting materials. Compounds containing the 1,3,5-triphenylbenzene core with two atom bridges are relatively unknown. This new class of pi-expanded coumarins contain triskelion architectures and X-ray crystallog. studies of one of the triskelions indicated that the 1,3,5-triphenylbenzene core adopted a near-planar geometry. This is the only known example of a two atom-bridged 1,3,5-triphenylbenzene derivative to adopted a planar structure.2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) were involved in the experimental procedure.

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Yang, Hyeri et al. published new experimental results with the assistance of cas: 110-03-2

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.SDS of cas: 110-03-2

Yang, Hyeri;Kim, Da-eun;Jang, Won-Hee;An, Susun;Cho, Sun-A.;Jung, Mi-Sook;Lee, Ji Eun;Yeo, Kyung-Wook;Koh, Sang Bum;Jeong, Tae-Cheon;Kang, Mi-Jeong;Chun, Young-Jin;Lee, Su-Hyon;Lim, Kyung-Min;Bae, SeungJin published 《Prevalidation trial for a novel in vitro eye irritation test using the reconstructed human cornea-like epithelial model, MCTT HCE》 in 2017. The article was appeared in 《Toxicology In Vitro》. They have made some progress in their research.SDS of cas: 110-03-2 The article mentions the following:

Here, the authors report the results of a prevalidation trial for an in vitro eye irritation test (EIT) using the reconstructed human cornea-like epithelium, MCTT HCE. The optimal cutoff to determine irritation in the prediction model was established at 35% with the receiver operation characteristics(ROC) curve for 126 substances. Within-lab(WL) and between-lab(BL) reproducibility was tested for 20 reference substances by 3 participating laboratories Viability data described by mean or ± 1/2 difference between duplicate wells, and scatter plots, demonstrated the WL/BL consistency. WL/BL concordance with the binary decision, whether non-irritant or irritant was estimated to be 85-95% and 95%, resp. WL/BL reproducibility of viability data was further supported by a strong correlation(ICC, r >0.9). WL/BL agreement of binary decisions was also examined by Fleiss’ Kappa statistics, which showed a strong level of agreement (>0.78), nevertheless weaker than the reproducibility of the viability. The EIT with MCTT HCE exhibited a sensitivity of 82.2% (60/73), a specificity of 81.1% (43/53), and an accuracy of 81.8% (103/126) for 126 reference substances (for liquids; a sensitivity of 100% (47/47), a specificity of 70.6% (24/34), and an accuracy of 87.7% (71/81), and for solids, a sensitivity of 50% (13/26), a specificity of 100% (19/19), and an accuracy of 71.1% (32/45)), suggesting that the accuracy is satisfactory but the sensitivity needs improvement, which shall be addressed through correcting the poor sensitivity for solid substances in future full validation trials. And 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) was used in the research process.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.SDS of cas: 110-03-2

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ACS Medicinal Chemistry Letters | Cas: 110-03-2 was involved in experiment

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.Related Products of 110-03-2

Rotstein, Benjamin H.;Hooker, Jacob M.;Woo, Jiyeon;Collier, Thomas Lee;Brady, Thomas J.;Liang, Steven H.;Vasdev, Neil published 《Synthesis of [¹¹C]Bexarotene by Cu-Mediated [¹¹C]Carbon Dioxide Fixation and Preliminary PET Imaging》 in 2014. The article was appeared in 《ACS Medicinal Chemistry Letters》. They have made some progress in their research.Related Products of 110-03-2 The article mentions the following:

Bexarotene (Targretin) is a retinoid X receptor (RXR) agonist that has applications for treatment of T cell lymphoma and proposed mechanisms of action in Alzheimer’s disease that have been the subject of recent controversy. Carbon-11 labeled bexarotene ([¹¹C-carbonyl]4-[1-(3,5,5,8,8-pentamethyltetralin-2-yl)ethenyl]benzoic acid) was synthesized using a Cu-mediated cross-coupling reaction employing an arylboronate precursor and [¹¹C]carbon dioxide under atm. pressure in 15 ± 2% uncorrected radiochem. yield (n = 3), based on [¹¹C]CO₂. Judicious choice of solvents, catalysts, and additives, as well as precursor concentration and purity of [¹¹C]CO₂, enabled the preparation of this ¹¹C-labeled carboxylic acid. Formulated [¹¹C]bexarotene was isolated (>37 mCi) with >99% radiochem. purity in 32 min. Preliminary positron emission tomog.-magnetic resonance imaging revealed rapid brain uptake in nonhuman primate in the first 75 s following i.v. administration of the radiotracer (specific activity >0.3 Ci/μmol at time of injection), followed by slow clearance (Δ = -43%) over 60 min. Modest uptake (SUV_max = 0.8) was observed in whole brain and regions with high RXR expression. To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

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Learn more about cas: 110-03-2 | Analyst (Cambridge, United Kingdom) 2020

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.Quality Control of 2,5-Dimethyl-2,5-hexanediol

Zanella, Delphine;Henket, Monique;Schleich, Florence;Dejong, Thibaut;Louis, Renaud;Focant, Jean-Francois;Stefanuto, Pierre-Hugues published 《Comparison of the effect of chemically and biologically induced inflammation on the volatile metabolite production of lung epithelial cells by GCxGC-TOFMS》 in 2020. The article was appeared in 《Analyst (Cambridge, United Kingdom)》. They have made some progress in their research.Quality Control of 2,5-Dimethyl-2,5-hexanediol The article mentions the following:

Exhaled breath anal. has a high potential for early non-invasive diagnosis of lung inflammatory diseases, such as asthma. The characterization and understanding of the inflammatory metabolic pathways involved into volatile organic compounds (VOCs) production could bring exhaled breath anal. into clin. practice and thus open new therapeutic routes for inflammatory diseases. Lung inflammation was simulated in vitro using A549 epithelial cells. The authors compared the VOC production from A549 epithelial cells after a chem. induced oxidative stress in vitro, exposing the cells to H₂O₂, and a biol. stress, exposing the cells to an inflammatory pool of sputum supernatants. Special attention was devoted to define proper neg. and pos. controls (8 different types) for the authors’ in vitro models, including healthy sputum coculture. Sputum from 25 asthmatic and 8 healthy patients were collected to create each pool of supernatants. Each sample type was analyzed in 4 replicates using solid-phase microextraction (SPME) comprehensive two-dimensional gas chromatog. hyphenated to time-of-flight mass spectrometry (GCxGC-TOFMS). This approach offers high resolving power for complex VOC mixtures According to the type of inflammation induced, significantly different VOCs were produced by the epithelial cells compared to all controls. For both chem. and biol. challenges, an increase of carbonyl compounds (54%) and hydrocarbons (31%) was observed Only the biol. inflammation model showed a significant cell proliferation together with an increased VOC production linked to asthma airway inflammation. This study presents a complete GCxGC-TOFMS workflow for in vitro VOC anal., and its potential to characterize complex lung inflammatory mechanisms. The experimental procedure involved many compounds, such as 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

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Cas: 110-03-2 | Das, Mitali et al. made new progress in 2016

Das, Mitali;Shu, Chi-Min published 《A green approach towards adoption of chemical reaction model on 2,5-dimethyl-2,5-di-(tert-butylperoxy)hexane decomposition by differential isoconversional kinetic analysis》 in 2016. The article was appeared in 《Journal of Hazardous Materials》. They have made some progress in their research.Category: alcohols-buliding-blocks The article mentions the following:

This study studied the thermal degradation products of 2,5-dimethyl-2,5-di-(tert-butylperoxy) hexane (DBPH), by TG/GC/MS to identify runaway reaction and thermal safety parameters. It also included the determination of time to maximum rate under adiabatic conditions (TMR_ad) and self-accelerating decomposition temperature obtained through Advanced Kinetics and Technol. Solutions The apparent activation energy (E_a) was calculated from differential isoconversional kinetic anal. method using DSC experiments The E_a value obtained by Friedman anal. is at 118.0-149.0 kJ mol^-1. The TMR_ad was 24.0 h with an apparent onset temperature of 82.4°. This study also established an efficient benchmark for a thermal hazard assessment of DBPH that can be applied to assure safer storage conditions.2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) were involved in the experimental procedure.

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Hintz, Heather A. et al. published new progress in experiments with the help of cas: 110-03-2

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Yang, Hyeri et al. published new experimental results with the assistance of cas: 110-03-2

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.SDS of cas: 110-03-2

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ACS Medicinal Chemistry Letters | Cas: 110-03-2 was involved in experiment

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Crystal Growth & Design | Cas: 110-03-2 was involved in experiment

Voitekhovich, Sergei V.;Lyakhov, Alexander S.;Ivashkevich, Ludmila S.;Schmorl, Sara;Kersting, Berthold;Ivashkevich, Oleg A. published 《The First Characterized Coordination Compounds of Macrocyclic Ligands Including Incorporated Tetrazole Rings》 in 2017. The article was appeared in 《Crystal Growth & Design》. They have made some progress in their research.Recommanded Product: 2,5-Dimethyl-2,5-hexanediol The article mentions the following:

The macrocyclic binuclear tetrazole, 2,2,5,5-tetramethyl-12-oxa-1,6,7,8,16,17,18,19-octaazatricyclo[13.2.1.16,9]nonadeca-7,9(19),15(18),16-tetraene (L), reacts with copper(II) chloride or copper(II) tetrafluoroborate hexahydrate to give [Cu₃Cl₆L₂] (1) or [CuL₂(H₂O)₂](BF₄)₂(H₂O) (2), resp. According to single crystal x-ray anal., both complexes are coordination polymers. In the crystal structure of complex 1, there are neutral linear bibridged trinuclear units Cu₃Cl₆, in which the Cu atoms are linked together by double Cl bridges. Neighboring Cu₃Cl₆ units are bonded to each other by two bridging macrocyclic ligands L due to coordination bonds Cu-N between terminal Cu atoms of Cu₃Cl₆ units and the tetrazole ring N atoms of ligands L to form polymeric chains. In complex 2, the Cu atom is bonded to three ligands L via the tetrazole ring N atoms, and to two H₂O mols., with formation of a square-pyramidal coordination of the metal. In this complex, one of two independent ligands L shows monodentate coordination, whereas another ligand plays the role of a bridge between two neighboring Cu atoms being responsible for formation of polymeric cationic chains [CuL₂(H₂O)₂]_n²ⁿ⁺. A complex system of H bonds connects the chains and the anions BF₄^– into a three-dimensional network. The temperature-dependent magnetic susceptibility measurements of complex 1 revealed that the Cu(II) ions were ferromagnetically coupled showing a coupling constant J of 50 cm^-1. To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

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et al. published new progress in experiments with the help of cas: 110-03-2

《Certain High Production Volume Chemicals; Test Rule and Significant New Use Rule; Fourth Group of Chemicals》 was published in 2011. The article was appeared in 《Federal Register》. The authors have made some progress in their research.

EPA is proposing to issue a test rule under Toxic Substances Control Act (TSCA) section 4(a)(1)(B) to require manufacturers and processors of 23 high production volume (HPV) chem. substances to develop screening-level health, environmental, and fate data based on the potential for substantial exposures of workers and consumers to these chems. EPA is also proposing to issue simultaneously a significant new use rule (SNUR) for another 22 HPV chem. substances under tSCA section 5(a)(2). The SNUR would require persons to file a significant new use notice (SNUN) with EPA prior to manufacturing, importing, or processing any of these chem. substances for use in a consumer product or for any use, or combination of uses, that is reasonably likely to exposure 1,000 or more workers at a single corporate entity. The required notification would provide EPA with the opportunity to evaluate the intended use and, if necessary, to prohibit or limit that activity before it occurs. EPA is also soliciting comment on a number of issues with regard to both the test rule and the SNUR. The experimental procedure involved many compounds, such as 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

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