Tag: 300-400

Li, Wengkun;Li, Jia;Wu, Bingmin;Lin, Ying;Kang, Huasheng;Liu, Li;Zhang, Guifang published 《Analysis of liposoluble components of cultivated and wild Lignosus rhinocerus》 in 2021. The article was appeared in 《Zhongyao Xinyao Yu Linchuang Yaoli》. They have made some progress in their research.HPLC of Formula: 119-47-1 The article mentions the following:

Objective Analyzing the differences in fat-soluble chem. composition between cultivated and wild Lignosus rhinocerus. Methods The sclerotium of Lignosus rhinocerus was artificially cultivated, and then, the liposol. components were extracted from sclerotium by refluxing extraction with petroleum ether, and the difference in chem. compositions between cultivated (in rice and in sawdust, resp.) and wild Lignosus rhinocerus were analyzed by gas chromatog.-mass spectrometry (GC-MS). The relative percentages of components were also calculated Results Eleven, 10 and 14 compounds were identified from the ingredients in petroleum ether extracts of the rice group (RP), sawdust group (SP), and wild group (WP) resp. The majority of them are hydrocarbon compounds The common components are 2, 4-Di-tert-butylphenol, pentacosane and hentriacontane. The relative percentage contents of pentacosane and hentriacontane were 15.85%, 17.36%, 16.43% and 12.01%, 11.58%, 19.29% for RP, SP and WP, resp. The difference of these three are:the ingredients of the rice group mainly contain Ergosterol and Nonacosane; those of the sawdust group mainly contain Docosane, Tricosane, Tetracosane; those of wild group varieties mainly contain Tetracosane, Erucylamide, Di-Bu phthalate, and 9, 12-Octadecadienoic acid (Z, Z) -, Et ester. Conclusion The lipophilic composition in petroleum ether extracts of cultivated and wild Lignosus rhinocerus are identical, which included 2, 4-Di-tertbutylphenol, pentacosane and hentriacontane; but there are clear differences. These findings provide reference for the quality evaluation and utilization of cultivated products of Lignosus rhinocerus.2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) were involved in the experimental procedure.

HPLC of Formula: 119-47-12,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Category: alcohols-buliding-blocksIn 2021, Tan, Hongli;Yang, Liu;Huang, Yichao;Tao, Lin;Chen, Da published 《”Novel” Synthetic Antioxidants in House Dust from Multiple Locations in the Asia-Pacific Region and the United States》. 《Environmental Science & Technology》published the findings. The article contains the following contents:

Synthetic antioxidants represent a complex group of additive chems. broadly used in consumer products. While traditional antioxidants such as 2,6-di-tert-butyl-4-methylphenol (BHT) were well studied, a variety of “novel” antioxidants have emerged with extensive applications but received much less attention. Our study aimed to explore a suite of 34 emerging antioxidants in house dust from four different regions, including Guangzhou (China), Adelaide (Australia), Carbondale (Illinois), and Hanoi (Vietnam). The results revealed broad occurrence of several rarely investigated chems. in house dust across regions, including triethylene glycol bis(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate (AO245), 2,6-di-tert-butyl-4-(dimethylamino)methylphenol (AO4703), 2,2′-thiene-2,5-diylbis(5-tert-butyl-1,3-benzoxazole) (BBOT), 1,3-diphenylguanidine (DPG), 2,4-bis(1,1-dimethylethyl)phenol (2,4DtBP), and 2,6-bis(1,1-dimethylethyl)phenol (2,6DtBP). In particular, DPG exhibited a median concentration of 5030-11 400 ng/g in house dust from the studied regions except for Hanoi (305 ng/g), generally 1 order of magnitude greater than that of BHT (890-1060 ng/g) and dominating the compositional profiles of antioxidants. Estimated intake of target antioxidants by toddlers via dust ingestion, even under the high exposure scenario, was determined to be 2-4 orders of magnitude lower than the reference doses of selected antioxidants. However, potential risks from long-term exposure to a cocktail of antioxidants under environmentally relevant concentrations merit further investigations due to insufficient knowledge on the sources, fate, and toxicokinetics of these chems. to date. And 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) was used in the research process.

Category: alcohols-buliding-blocks2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Zhu, Shu;Cheng, Geng;Quan, Xuejun;Jiang, Ziwen;Chen, Hao;Cheng, Zhiliang;Qiu, Facheng published 《Comparative study on COD removal from reverse osmosis concentrate using two physicochemical combined processes》 in 2022. The article was appeared in 《Journal of Cleaner Production》. They have made some progress in their research.Name: 2,2-Methylenebis(6-tert-butyl-p-cresol) The article mentions the following:

Reverse osmosis concentrate (ROC) produced from landfill leachate contains a substantial fraction of refractory organics with low biodegradability that is challenging for conventional wastewater treatment methods. To achieve high-efficiency ROC degradation, two physicochem. combined processes, i.e. ceramic membrane/ozone-nanofiltration (CM/O₃+NF) and Ca(OH)₂ coagulation-ceramic membrane/ozone-nanofiltration (Ca(OH)₂+CM/O₃+NF) were proposed. In this study, the removal efficiency of organic pollutants in process 1 (CM/O₃+NF) and process 2 (Ca(OH)₂+CM/O₃+NF) was investigated, resp. The results showed that process 1 and process 2 were both sufficient to eliminate the refractory COD, the permeates have a COD lower than the requirements for discharge. But the process 2 had a better performance than that of process 1. The COD and TOC of ROC decreased from 2500 mg/L and 1050 mg/L to 20.23 mg/L and 8.26 mg/L after process 2 treatment, and the removal efficiency was 1.9% and 4.04% higher than those of process 1, resp. In process 2, Ca(OH)₂ flocculation significantly improves the oxidation effect of CM/O₃, effectively shortens the oxidation time by 25%, improves the membrane flux of the ceramic membrane, and reduces the treatment cost of the ROC. Furthermore, the change of the composition of the macromol. organics in the ROC during the treatment of process 1 and process 2 was compared and explored through anal. by UV254, 3D-EEM, GC-MS. The results indicated that the types of organic matter in the ROC treated by Process 2 decreased from 27 to 8, which was 5 less than that of Process 1. Ca(OH)₂ flocculation in process 2 significantly reduces the content of macromol. humic acid in ROC, especially has a good flocculation effect on lipids, aldehydes, carboxylic acids, ketones and other substances containing carbon-oxygen double bonds. At the same time, Ca(OH)₂ provides an alk. environment and strengthens the decomposition ability of alkanes, alkenes, and aromatics in ROC into more soluble byproducts by CM/O₃. The remaining pollutants that are difficult to be oxidized are effectively filtered by NF. Overall, the Ca(OH)₂+CM/O₃+NF process with complementary functions has great potential in realizing effective ROC treatment. And 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) was used in the research process.

Name: 2,2-Methylenebis(6-tert-butyl-p-cresol)2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Palvoelgyi, Adam Mark;Smith, Jakob;Schnuerch, Michael;Bica-Schroeder, Katharina published 《Counterion-Enhanced Pd/Enamine Catalysis: Direct Asymmetric α-Allylation of Aldehydes with Allylic Alcohols by Chiral Amines and Achiral or Racemic Phosphoric Acids》. The research results were published in《Journal of Organic Chemistry》 in 2021.Safety of 2,2-Methylenebis(6-tert-butyl-p-cresol) The article conveys some information:

We report a straightforward and efficient Pd/enamine catalytic procedure for the direct asym. α-allylation of branched aldehydes. The use of simple chiral amines and easily prepared achiral or racemic phosphoric acids, together with a suitable Pd-source resulted in a highly active and enantioselective catalyst system for the allylation of various α-branched aldehydes with different allylic alcs. The reported procedure could provide an easy access to both product antipodes. Furthermore, two possible orthogonal derivatizations of the enantioenriched aldehydes were performed without any decrease in enantioselectivity. And 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) was used in the research process.

Safety of 2,2-Methylenebis(6-tert-butyl-p-cresol)2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Product Details of 119-47-1《GC-MS analysis of chemical constituents and determination of the total antioxidant capacity of adult powder of Periplaneta americana》 was published in 2022. The authors were Yang, Zhen;Xie, Jiqin;Huang, Feiyun;Yang, Yu;Zhang, Xiuyue;Yue, Bisong, and the article was included in《Entomological Research》. The author mentioned the following in the article:

Edible insects are alternative sources of high protein. Southeast Asia, South America, Africa, and Europe have recorded edible insects and, especially in Europe and America, there are factories that produce insects as food. In some areas of China, there has also been the habit of eating insects since ancient times. Periplaneta americana is an insect with the homol. of medicine and food. In recent years, its medicinal and nutritional functions have attracted extensive attention and research. Its adult powder has been certified as a health product. It not only contains a variety of proteins but also is rich in fatty acids. The composition and antioxidant function of adult powder extract was analyzed in this study. Using adult P. americana powder as the raw material, it was extracted with n-Hexane, dichloromethane, and Et acetate, resp. Gas chromatog.-mass spectrometry (GC-MS) removed a total of 60 compounds, and many active components were extracted from P. americana powder for the first time. The parts and relative content of each extracted sample were obtained, and the total antioxidant capacity (T-AOC) of each extracted piece was determined, among which the antioxidant activity of Et acetate was the highest.2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) were involved in the experimental procedure.

Product Details of 119-47-12,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Ali, Safaa H.;Shephard, Angus C. G.;Wang, Jun;Guo, Zhifang;Davies, Murray S.;Deacon, Glen B.;Junk, Peter C. published 《Lanthanoid Biphenolates as a Rich Source of Lanthanoid-Main Group Heterobimetallic Complexes》 in 2022. The article was appeared in 《Chemistry – An Asian Journal》. They have made some progress in their research.Quality Control of 2,2-Methylenebis(6-tert-butyl-p-cresol) The article mentions the following:

Several new trivalent dinuclear rare earth 2,2′-methylenebis(6-tert-butyl-4-methylphenolate) (mbmp^2-) complexes with the general form [Ln₂(mbmp)₃(thf)_n] (Ln=Sm (1), Tb (2) (n=3), and Ho (3), Yb (4) (n=2)), and a tetravalent cerium complex [Ce(mbmp)₂(thf)₂] (5) have been synthesized by RTP (redox transmetallation/protolysis) reactions from lanthanoid metals, Hg(C₆F₅)₂ and the biphenol mbmpH₂. These new complexes and some previously reported partially protonated rare earth biphenolate complexes [Ln(mbmp)(mbmpH)(thf)_n] react with lithium, aluminum, potassium and zinc organometallic reagents to form lanthanoid-main group heterobimetallic species. When reaction mixtures containing the Ln biphenolate complexes were treated with n-butyllithium, both mol. [Li(thf)₂Ln(mbmp)₂(thf)_n] (Ln=La (6), Pr (7) (n=2) and Er (8), Yb (9), and Lu (10) (n=1)) and charge separated [Li(thf)₄][Ln(mbmp)₂(thf)₂] (Ln=Y (11), Sm (12), Dy (13), and Ho (14)) complexes were isolated. Treatment with trimethylaluminium also led to isolation of mol. ([AlMe₂Ln(mbmp)₂(thf)₂] (Ln=Pr (15), Sm (16), and Tb (17))) and ionic [La(mbmp)(thf)₅][AlMe₂(mbmp)] (18) complexes. One gadolinium-potassium ([K(thf)₃Gd(mbmp)₂(thf)₂] (19)), and one ytterbium-zinc species ([ZnEtYb(mbmp)₂(thf)] (20)) were isolated from treatment of reaction mixtures with potassium bis(trimethylsilyl)amide and diethylzinc resp. To complete the study, the researchers used 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

Quality Control of 2,2-Methylenebis(6-tert-butyl-p-cresol)2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Moni, Sivakumar Sivagurunathan;Alam, Mohammad Firoz;Makeen, Hafiz A.;Alhazmi, Hassan A.;Sultan, Muhammad;Siddiqui, Rahimullah;Jabeen, Aamena;Sanobar, Syeda;Alam, Shamsher Md.;Ur Rehman, Zia;Elmobark, Mohamed Eltyep;Madkhali, Osama;Haque, Anzarul;Albratty, Mohammed published 《Solvent extraction, spectral analysis and antibacterial activity of the bioactive crystals of Sargassum aquifolium (Turner) C.Agardh from Red Sea》 in 2021. The article was appeared in 《Natural Product Research》. They have made some progress in their research.Name: 2,2-Methylenebis(6-tert-butyl-p-cresol) The article mentions the following:

The purpose of this study was to investigate the chem. composition and anti-bacterial properties of the bioactive principles of Sargassum aquifolium (Turner) C. Agardh, a brown seaweed in Red sea of Jazan province, Kingdom of Saudi Arabia. Crystals were obtained from the petroleum ether extract of Sargassum aquifolium and subjected to chem. tests, FTIR spectroscopic anal. and NMR anal. to identify their chem. composition, and to study their antibacterial properties against selected human pathogenic bacteria. In addition, GC-MS anal. was performed to identify the bioactive compounds in the crude petroleum ether extract Results of the antibacterial effect of the crystal analyte showed a wide spectrum of activity against the screened human pathogenic bacteria. To complete the study, the researchers used 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

Name: 2,2-Methylenebis(6-tert-butyl-p-cresol)2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Computed Properties of C23H32O2In 2022, Deng, Mei;Cao, Xuejuan;Li, Zhihao;Li, Xiaoyu;Yang, Xiaoyu;Tang, Boming published 《Investigating properties and intermolecular interactions of sludge bio-oil modified asphalt》. 《Journal of Molecular Liquids》published the findings. The article contains the following contents:

Bio-asphalt is a binder composed of bio-oil and petroleum asphalt under certain conditions. In this study, sludge bio-oil (wt 10%) was added into matrix asphalt to prepare sludge bio-asphalt for the first time. The effects of sludge bio-oil on asphalt performance and the essence of interaction between components were investigated using performance test, mol. dynamics (MD) simulation, and d. functional theory (DFT). Chem. anal. showed that the ester compound containing ester functional group (-COOH) was the main component of sludge bio-oil. Phys. and rheol. tests were performed to examine whether the properties of sludge bio-asphalt could be improved. The results found that sludge bio-oil can be used to soften the hard asphalt. Furthermore, the existence of bio-oil reduced complex modulus G* of master curves and stiffness, also increased Jnr and m-value, which means that sludge bio-oil had a pos. effect on the low-temperature thermal cracking resistance performance while sacrificing the high-temperature rutting resistance performance to some extent. Fourier IR spectroscopy (FTIR) and fluorescence spectrum (FM) anal. indicated that sludge bio-oil evenly dispersed in the asphalt, and the bio-asphalt structure resembled that of the conventional binder. The results of MD simulation further showed that O atom of -COOH and H atom in the asphalt mols. formed hydrogen bond (O-H···O, O-H···C) interaction. This changed originally existed conformational packing of agglomeration and further prevented the agglomeration of component mols. In addition, the anal. of cohesive energy d. (CED) and solubility parameters (SP) revealed that sludge bio-oil significantly influenced the compatibility of asphaltene-asphaltene, resin-resin, and asphaltene-resin components. These, in turn, may explain some of the observed improvements in rheol. properties.2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) were involved in the experimental procedure.

Computed Properties of C23H32O22,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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