Tag: 100-200

Study on the HPA immobilisation on Al-SBA-15 support over Bronsted groups was written by Truong, Thi Hanh;Do, Van Cuong;Ngoc, Mai Do;Hung, Tran Quang;Doan, Huan Van;Nguyen, Thi Nhiem;Doan, Thi Hai;Le, Thi Hoai Nam;Nguyen, Tuyen Van;Bach, Long Giang;Tran, Quang Vinh. And the article was included in Molecular Catalysis in 2019.Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate The following contents are mentioned in the article:

In this article, a significant aspect of Bronsted groups in the preparation of HPA/Al-SBA-15 catalyst by immobilizing heteropoly acid H₃PW₁₂O₄₀ (HPA) to mesoporous Al-SBA-15 support was studied. The crucial factors affected the preparation such as functional groups formed on the support, the use of HPA type for the immobilization (com. catalyst or in-situ synthetic HPA), and Si/Al molar ratio of Al-SBA-15 were systematically investigated. The prepared catalysts were tested their performance in polar reagent reactions (fructone synthesis was chosen as an example) to show the effect of HPA after the immobilizaton. Here we tested the HPA content (by Energy-dispersive X-ray method), acidity (by temperature-programmed desorption of ammonia method) and the Et acetoacetate conversion in fructone synthesis to prove this concept. The other characterization methods such as small angle x-ray scattering, Fourier-transform IR spectroscopy, sp. surface area and pore volume also showed the properties change of materials before and after HPA immobilization. It was shown that the HPA/Al-SBA-15 sample prepared by using HPA com. catalyst and NH+4 ion-exchanged Bronsted groups of mesoporous Al-SBA-15 support (Si/Al molar ratio of 15) showed the highest acidity and catalytic activity (Et acetoacetate conversion of 93.49 wt%) in comparison to HPA com. catalyst as well as to the other catalysts. In addition, this catalyst also showed good catalytic stability after five reaction cycles with slightly reduction of activity, suggesting the prospect of employing HPA/Al-SBA-15 catalyst for organic synthesis of polar compounds This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Although benzodioxole is not particularly important, many related compounds containing the methylenedioxyphenyl group are bioactive, and thus are found in pesticides and pharmaceuticals.Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Environmental Chemicals Modulate Polar Bear (Ursus maritimus) Peroxisome Proliferator-Activated Receptor Gamma (PPARG) and Adipogenesis in Vitro was written by Routti, Heli;Lille-Langoey, Roger;Berg, Mari K.;Fink, Trine;Harju, Mikael;Kristiansen, Kurt;Rostkowski, Pawel;Rusten, Marte;Sylte, Ingebrigt;Oeygarden, Lene;Goksoeyr, Anders. And the article was included in Environmental Science & Technology in 2016.Related Products of 6413-10-1 The following contents are mentioned in the article:

The authors studied interactions between polar bear peroxisome proliferator-activated receptor gamma (pbPPARG) and selected compounds using a luciferase reporter assay and predictions through mol. docking. Furthermore, the authors studied adipogenesis by liver and adipose tissue extracts from a polar bear and three synthetic mixtures of contaminants in murine 3T3-L1 preadipocytes and polar bear adipose tissue-derived stem cells (pbASCs). PCB153 and p,p’-DDE antagonized pbPPARG, although their predicted receptor-ligand affinity was weak. PBDEs, tetrabromobisphenol A, and PCB170 had a weak agonistic effect on pbPPARG, while hexabromocyclododecane, bisphenol A, oxychlordane, and endosulfan were weak antagonists. pbPPARG-mediated luciferase activity was suppressed by synthetic contaminant mixtures reflecting levels measured in polar bear adipose tissue, as were transcript levels of PPARG and the PPARG target gene fatty acid binding protein 4 (FABP4) in pbASCs. Contaminant extracts from polar bear tissues enhanced triglyceride accumulation in murine 3T3-L1 cells and pbASCs, whereas triglyceride accumulation was not affected by the synthetic mixtures Chem. characterization of extracts using non-target methods revealed presence of exogenous compounds that have previously been reported to induce adipogenesis. These compounds included phthalates, tonalide, and nonylphenol. In conclusion, major legacy contaminants in polar bear adipose tissue exert antagonistic effects on PPARG, but adipogenesis by a mixture containing emerging compounds may be enhanced through PPARG or other pathways. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Related Products of 6413-10-1).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Related Products of 6413-10-1

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Phosphate-modified TiO₂ solid acid catalysts was written by Ren, Li-guo;Gao, Wen-yi;Zhang, Xiao-li. And the article was included in Shiyou Huagong Gaodeng Xuexiao Xuebao in 2006.COA of Formula: C8H14O4 The following contents are mentioned in the article:

A phosphate-modified TiO₂ solid acid catalyst was prepared from TiCl₄ and H₃PO₄ by precipitation, aging, filtration, washing, drying, impregnation and calcination processes. The acidic property of catalyst was determined by Hammett indicator method and n-butylamine titration as well as pyridine adsorption FT-IR spectrometry. The characterization of the catalyst was performed using XRD, FT-IR, TG-DTA, and N₂ adsorption methods. The effect of mass fraction of phosphate and calcination temperature on the acidic property, textural property and catalytic performance of phosphate-modified TiO₂ solid acid catalysts was studied. TG-DTA curves and XRD patterns showed that phosphate could stabilize the anatase phase and prevent grains from growing. FT-IR spectra showed that phosphate is strongly bound to the TiO₂ surface in a bidentate fashion. N₂ adsorption and n-butylamine titration showed that surface area and pore volume as well as total acidity increased with the increase of mass fraction of phosphate when it was less than 7.5% and thereafter decreased. Hammett indicator method and pyridine adsorption FT-IR spectra showed that solid superacid was formed at 425-575°, and there were Lewis and Bronsted acidic centers on surface. The phosphate-modified TiO₂ solid acid catalyst had good catalytic performance in the ketalization of Et acetoacetate and 1,2-ethylene glycol. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1COA of Formula: C8H14O4).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Although benzodioxole is not particularly important, many related compounds containing the methylenedioxyphenyl group are bioactive, and thus are found in pesticides and pharmaceuticals.COA of Formula: C8H14O4

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Facilitating Myers-Saito cyclization through acid-triggered tautomerization for the development of maleimide-based antitumor agents was written by Lu, Haotian;Ma, Hailong;Li, Baojun;Zhang, Mengsi;Chen, Huimin;Wang, Yue;Li, Xinxin;Ding, Yun;Hu, Aiguo. And the article was included in Journal of Materials Chemistry B in 2020.Application of 6413-10-1 The following contents are mentioned in the article:

Enyne-allene compounds undergo Myers-Saito cyclization at physiol. temperature to generate diradical intermediates that are capable of inducing DNA damage and cell death. The high reactivity of enyne-allene however limits their promising prospect as anticancer agents due to the spontaneous cyclization during storage and delivery. Regulating the cyclization process by taking advantage of the characteristics of a tumor cellular microenvironment, such as employing a low pH value to activate the cyclization process, is thus of essential importance. In this work, a novel enediyne (EDY) system with locked carbonyl groups was specifically designed and synthesized. Unlocking the protected carbonyl groups in the presence of acid would facilitate the rearrangement of propargyl moieties into an allene group, enabling the formation of an enyne-allene structure and occurrence of Myers-Saito cyclization. The pH-dependent diradical generation and DNA-cleavage ability of the designed EDY system were confirmed by ESR anal. and DNA gel electrophoresis. A promising cytotoxicity against HeLa cells with half inhibition concentrations (IC₅₀) as low as 1.40μM was obtained, which was comparable to those of many com. applied anticancer drugs. Further in vitro experiments revealed that this EDY system induced intracellular DNA damage and subsequently resulted in S-phase arrest and cytotoxicity through programmed apoptosis. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Application of 6413-10-1).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes.Application of 6413-10-1

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Oral administration of royal jelly may improve the preservation of rooster spermatozoa was written by Rahnama, Golsomeh;Deldar, Hamid;Ansari Pirsaraei, Zarbakht;Kazemifard, Mohammad. And the article was included in Journal of Animal Physiology and Animal Nutrition in 2020.Recommanded Product: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate The following contents are mentioned in the article:

The aim of the present study was to investigate the effect of dietary supplementation of royal jelly (RJ) on liquid and frozen storage of rooster spermatozoa. Twenty-five 30-wk-old of Mazandaran native breeder roosters were randomly divided into five treatments (n = 5 roosters/group). Exptl. treatments are designed to include a control group and various levels (0.0 (RJ0), 100 (RJ100), 200 (RJ200), 300 (RJ300) mg kg-1 BW-1) of royal jelly (RJ) that were fed to the roosters using force-feed method. The result of this study showed that the spermatozoa forward progressive motility, abnormality, membrane integrity, and viability were improved by the RJ100 group compared to the other groups after 24 and 48 h storage period at 4°C. The percentage of membrane integrity and forward progressive motility after freeze-thawing in the RJ100 group was significantly higher than the other groups, and the percentage of abnormal spermatozoa was lower. A significant decrease in semen quality parameters was seen after 24 and 48 h of refrigeration, but there was no observed change between 2 and 24 h in the RJ100. Moreover, after freeze-thawing, DNA integrity and mitochondrial activity in the RJ100 group were significantly higher than the other groups. According to our results, feeding of RJ at 100 mg kg-1 BW-1 to the roosters was improved spermatozoa characteristics during liquid and cryopreservation conditions. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Recommanded Product: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Recommanded Product: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Synthesis of fructone over dealuminated USY supported heteropoly acid and its salt catalysts was written by Zhang, Fumin;Yuan, Chaoshu;Wang, Jun;Kong, Yan;Zhu, Haiyang;Wang, Chunyan. And the article was included in Journal of Molecular Catalysis A: Chemical in 2006.Computed Properties of C8H14O4 The following contents are mentioned in the article:

12-Phosphotungstic acid (PW) and cesium salt of PW supported on dealuminated ultra-stable Y zeolite (DUSY) with various loadings were prepared by impregnation method, and their physicochem. properties were characterized by X-ray powder diffraction (XRD), N₂ adsorption, solid state ³¹P and ²⁹Si MAS NMR, Hammett indicator and SEM techniques. Their catalytic performances were evaluated in the liquid-phase acetalization of Et acetoacetate with ethylene glycol to fructone. The catalytic stability was tested using water treatment, in which the concentration of heteropoly compound was measured by UV-visual spectrophotometer. A high catalytic activity was found over the supported heteropoly compound catalysts. However, for the supported PW catalysts, a severe leaching of heteropoly anions into water was observed, leading to their poor reusability. By contrast, the Cs salt of PW catalyst supported on DUSY exhibited very high catalytic activity with high water-tolerance and reusability. The conversion of Et acetoacetate of 98.7% with the selectivity of fructone above 97% could be obtained over the DUSY supported sample containing 30% of Cs_2.5H_0.5PW₁₂O₄₀ by weight at the optimal reaction conditions, and a considerable catalytic activity still could be achieved after five times of reaction cycle. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Computed Properties of C8H14O4).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes.Computed Properties of C8H14O4

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Bronsted acidic cellulose-PO₃H: An efficient catalyst for the chemoselective synthesis of fructones and trans-esterification via condensation of acetoacetic esters with alcohols and diols was written by Naikwadi, Dhanaji R.;Singh, Amravati S.;Biradar, Ankush V.. And the article was included in Molecular Catalysis in 2021.Name: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate The following contents are mentioned in the article:

Cellulose is the most abundant organic source and has expedient a great deal of interest as renewable and emerged as sustainable feedstock. The functionalization of cellulose as designed catalytic system intriguing furnished to the production of fine chems. Herein, we synthesized an environmental friendly solid acid catalyst by functionalizing cellulose with phosphoric acid (PO₃H). The successful functionalization of cellulose with PO₃H was confirmed by ³¹P NMR, ICP-OES, FE-SEM, and XPS anal. ICP-OES revealed the presence of phosphorus content of ~1.0 weight % on the catalyst’s surface while elemental mapping by FESEM and XPS shows a uniform distribution of phosphorus over the material. The synthesized solid acid catalyst was utilized for condensation of diols with acetoacetic esters in solvent-free conditions to synthesize fine chems. The present approach not only circumvented the one-step protection and other products but more fascinatingly provided trans-esterification of acetoacetic esters with diols and n-alcs. The catalyst was successfully used for chemoselective protection on Et acetoacetate with 1,2 diols to essential fructone mol. with ~100% conversion and 99% selectivity. The results suggested that the catalyst has the advantage over com. solid acid heterogeneous and homogeneous catalysts. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Name: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Name: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Identification of agonists for a group of human odorant receptors was written by Gonzalez-Kristeller, Daniela C.;do Nascimento, Joao B. P.;Galante, Pedro A. F.;Malnic, Bettina. And the article was included in Frontiers in Pharmacology in 2015.Recommanded Product: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate The following contents are mentioned in the article:

Olfaction plays a critical role in several aspects of the human life. Odorants are detected by hundreds of odorant receptors (ORs) which belong to the superfamily of G protein-coupled receptors. These receptors are expressed in the olfactory sensory neurons of the nose. The information provided by the activation of different combinations of Ors in the nose is transmitted to the brain, leading to odorant perception and emotional and behavioral responses. There are ∼400 itact human ORs, and to date only a small percentage of these receptors (∼10%) have known agonists. The determination of the specificity of the human Ors will contribute to a better understanding of how odorants are discriminated by the olfactory system. In this work, we aimed to identify human specific ORs, i.e., Ors that are present in humans but absent from other species, and their corresponding agonists. To do this, we first selected 22 OR gene sequences from the human genome with no counter parts in the mouse, rat or dog genomes. Then we use a heterologous expression system to screen a subset of these human Ors against a panel of odorants of biol. relevance, including foodborne aroma volatiles. We found that different types of odorants are able to activate some of these previously uncharacterized human ORs. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Recommanded Product: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Recommanded Product: Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Potential hazard of volatile organic compounds contained in household spray products was written by Rahman, Mahmudur Md;Kim, Ki-Hyun. And the article was included in Atmospheric Environment in 2014.Application of 6413-10-1 The following contents are mentioned in the article:

To assess the exposure levels of hazardous volatile pollutants released from common household spray products, a total of 10 spray products consisting of six body spray and four air spray products have been investigated. The body spray products included insect repellents (two different products), medicated patch, deodorant, hair spray, and humectant, whereas the air spray products included two different insecticides (mosquito and/or cockroach), antibacterial spray, and air freshener. The main objective of this study was to measure concentrations of 15 model volatile organic compounds (VOCs) using GC/MS coupled with a thermal desorber. In addition, up to 34 ‘compounds lacking authentic standards or surrogates (CLASS)’ were also quantified based on the effective carbon number (ECN) theory. According to our anal., the most common indoor pollutants like benzene, toluene, styrene, Me Et ketone, and Bu acetate have been detected frequently in the majority of spray products with the concentration range of 5.3-125 mg L^-1. If one assumes that the amount of spray products released into air reaches the 0.3 mL level for a given space size of 5 m³, the risk factor is expected to exceed the carcinogenic risk level set for benzene (10^-5) by the U. S. EPA. This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Application of 6413-10-1).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes.Application of 6413-10-1

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem

Analysis of volatile compounds in meat of cultivated puffer fish (Takifugu obscurus) by simultaneous distillation and extraction (SDE) combined with GC-MS was written by Wu, Rong;Tao, Ning-ping;Liu, Yuan;Wang, Xi-chang. And the article was included in Shipin Yu Fajiao Gongye in 2012.Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate The following contents are mentioned in the article:

The volatile compounds in meat of cultivated puffer fish (Takifugu obscurus) were extracted by simultaneous distillation and extraction (SDE) with dichloromethane and di-Et ether, resp. GC-MS was used for qual. anal. of volatile components. The quantities of volatiles were determined with 2, 4, 6-trimethylpyridine as the internal standard Principal component anal. (PCA) was used in analyzing the differences and similarities. The results indicated that the volatile compounds obtained using di-Et ether extraction were mainly contributed from tetradecanal (4963.71 ng/g), octadecanal (1171.51 ng/g), (Z)-13-Octadecenal (2007.21 ng/g), Et acetate (1148.44 ng/g), n-hexadecanoic acid (4639.90 ng/g). A total of 57 compounds were identified. The major volatile compounds with dichloromethane extraction were hexadecanal (2381.77 ng/g), 2, 3-butanedione (1267.40 ng/g), n-hexadecanoic acid (545.08 ng/g). A total of 78 compounds were acquired. Dichloromethane extraction was better on qual. aspects, while di-Et ether extracts has advantages in the quant. aspects. A total of 96 compounds with two solvents were identified, including aldehydes (29), ketones (11), alcs. (16), N-containing or S-containing compounds and aromatics (22), esters (7), acids (3), alkanes (8). This study involved multiple reactions and reactants, such as Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate).

Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate (cas: 6413-10-1) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. Dioxole functionalized metal-organic frameworks have also been recently reported.Safety of Ethyl 2-(2-methyl-1,3-dioxolan-2-yl)acetate

Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem