Month: October 2022

Related Products of 78-69-3《Comparison of the odorant composition of post-consumer high-density polyethylene waste with corresponding recycled and virgin pellets by combined instrumental and sensory analysis》 was published in 2018. The authors were Strangl, Miriam;Schlummer, Martin;Maeurer, Andreas;Buettner, Andrea, and the article was included in《Journal of Cleaner Production》. The author mentioned the following in the article:

Both, for ecol. and economic reasons, the recycling of plastics for new or broader applications is currently gaining more and more attention. As high-d. polyethylene (HDPE) plays an essential role in various packaging, the recycling of this material is particularly sought for. Thereby, odorous contaminants are a common obstacle when aiming at achieving high-quality HDPE recycled goods. In this respect, revealing the differences in the odorant composition of waste, recycled pellets and virgin pellets provides insights into odor sources and formation pathways and therefore supports the developing of optimized avoidance strategies. For this reason, the odor of post-consumer HDPE waste, corresponding recycled HDPE pellets and virgin HDPE granules was analyzed in the frame of the present study by comprehensive sensory anal. as well as instrumental anal. using high resolution gas chromatog.-olfactometry followed by two-dimensional high resolution gas chromatog.-mass spectrometry-olfactometry. In total, 32 odorous substances were identified. While some oxidation products were present in all three samples, albeit mostly with much higher smell intensity when regarding the waste and the recycled pellets, a number of terpenes as well as phenylpropanoids were found only in the HDPE waste and recycled material and, in most cases, with high sensory abundance. These odorants are likely to stem from fragrances used in cosmetics and washing/cleaning agents. Moreover, comparative odor extract dilution anal. (cOEDA) revealed that the applied conventional recycling process resulted only in a slight reduction of the odor pollution; moreover, it could be shown that no new odorants were generated to any relevant extent. Accordingly, this study shows that further optimized strategies for odorant removal from post-consumer recycled HDPE material are required. The experimental procedure involved many compounds, such as 3,7-Dimethyloctan-3-ol (cas: 78-69-3) .

3,7-Dimethyloctan-3-ol(cas:78-69-3) is a fatty alcohol that is 3-octanol substituted by methyl groups at positions 3 and 7.Related Products of 78-69-3 Metabolite observed in cancer metabolism. It has a role as a human metabolite.

Reference:
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Liu, E. published 《Design, synthesis and activities of novel tamibarotene analogues containing nitrogen heterocyclic ring》 in 2014. The article was appeared in 《Zhongguo Xinyao Zazhi》. They have made some progress in their research.Recommanded Product: 2,5-Dimethyl-2,5-hexanediol The article mentions the following:

Three novel tamibarotene analogs containing nitrogen heterocyclic ring were designed, synthesized and evaluated. Target compounds were synthesized through 8 steps using 2,5-dimethyl-2,5-hexanediol and di-Et oxalate as starting materials. In vitro antitumor bioactivities against HL-60 cells and NB4 cells were evaluated by a MTT assay method. Their structures were identified by ¹H-NMR, MS and elemental anal. Three compounds had inhibitory effects on HL-60 cells and NB4 cells. To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (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.Recommanded Product: 2,5-Dimethyl-2,5-hexanediol

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Name: 4-(2-Phenylpropan-2-yl)phenol《Dual-template magnetic molecularly imprinted polymer-based sorbent for simultaneous and selective detection of phenolic endocrine disrupting compounds in foodstuffs》 was published in 2021. The authors were Bhogal, Shikha;Mohiuddin, Irshad;Kaur, Kuldeep;Lee, Jechan;Brown, Richard J. C.;Malik, Ashok Kumar;Kim, Ki-Hyun, and the article was included in《Environmental Pollution (Oxford, United Kingdom)》. The author mentioned the following in the article:

In this research, an efficient (94.9-99.4%) and fast (5 min) method has been developed and validated for simultaneous identification and quantification of phenolic endocrine disrupting compounds with an emphasis on bisphenol A (BPA) and 4-cumylphenol (4-CP) in food stuffs using a dual-template magnetic, molecularly-imprinted polymer (dt-MMIP). The dt-MMIP was synthesized by a sol-gel method using Fe₃O₄@SiO₂ (as the core) and BPA and 4-CP (as templates). The dt-MMIP was coupled with magnetic solid phase extraction to simultaneously detect BPA and 4-CP in food samples. BPA was measured from bottled water and fruit juice samples samples at 0.36 and 0.24 ng mL^-1, resp., while 4-CP in those samples was 0.33 and 0.16 ng mL^-1, resp. Their detection limits were estimated as 0.04 and 0.05 ng mL^-1, resp. The developed dt-MMIP method was highly reproducible, while maintaining a good cyclability up to 20 cycles. The experimental procedure involved many compounds, such as 4-(2-Phenylpropan-2-yl)phenol (cas: 599-64-4) .

4-(2-Phenylpropan-2-yl)phenol(cas:599-64-4) is a natural product found in Panax ginseng.Name: 4-(2-Phenylpropan-2-yl)phenol 4-(2-Phenylpropan-2-yl)phenol is a useful reagent for preparing and characterizing aromatic polyphosphonates as high refractive index polymers.

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Botubol-Ares, Jose Manuel;Cordon-Ouahhabi, Safa;Moutaoukil, Zakaria;Collado, Isidro G.;Jimenez-Tenorio, Manuel;Puerta, M. Carmen;Valerga, Pedro published 《Methylene-Linked Bis-NHC Half-Sandwich Ruthenium Complexes: Binding of Small Molecules and Catalysis toward Ketone Transfer Hydrogenation》. The research results were published in《Organometallics》 in 2021.Product Details of 2425-77-6 The article conveys some information:

[Cp^*RuCl(COD)] reacts with LH₂Cl₂ (L = methanebis(3-methylimidazol-2-ylidene)) and LiBu in THF at 65° furnishing the bis-carbene derivative [Cp^*RuCl(L)] (2). This compound reacts with NaBPh₄ in MeOH under dinitrogen to yield the labile dinitrogen-bridged complex [{Cp^*Ru(L)}₂(μ-N₂)][BPh₄]₂ (4). The dinitrogen ligand in 4 is readily replaced by donor mols. leading to the corresponding cationic complexes [Cp^*Ru(X)(L)][BPh₄] (X = MeCN 3, H₂ (6), C₂H₄ (8a), CH₂CHCOOMe 8b, CHPh 9). Attempts to recrystallize 4 from MeNO₂/EtOH solutions gave the nitrosyl derivative [Cp^*Ru(NO)(L)][BPh₄]₂ (5), which was structurally characterized. The allenylidene complex [Cp^*Ru:C:C:CPh₂(L)][BPh₄] (10) was also obtained, and it was prepared by reaction of 2 with HCCC(OH)Ph₂ and NaBPh₄ in MeOH at 60°. 3, 4, And 6 are efficient catalyst precursors for the transfer hydrogenation of a broad range of ketones. The dihydrogen complex 6 proved particularly effective, reaching TOF values up to 455 h^-1 at catalyst loadings of 0.1% mol., with a high functional group tolerance on the reduction of a broad scope of aryl and aliphatic ketones to yield the corresponding alcs.2-Hexyl-1-decanol (cas: 2425-77-6) were involved in the experimental procedure.

2-Hexyl-1-decanol(cas: 2425-77-6) has been shown to inhibit the growth of b16 mouse melanoma cells, suggesting it may be useful for treating skin cancer.Product Details of 2425-77-6 This fatty acid also has transport properties and can form hydrogen bonds with other molecules.

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Category: alcohols-buliding-blocksIn 2016, Sotto, Nicolas;Cazorla, Clement;Villette, Carole;Billamboz, Muriel;Len, Christophe published 《Selective Pinacol-Coupling Reaction using a Continuous Flow System》. 《Journal of Organic Chemistry》published the findings. The article contains the following contents:

The first continuous flow pinacol coupling reaction of carbonyl compounds was successfully achieved within only 2 min during a single pass through a cartridge filled with zinc(0). The optimized method allowed the efficient production of gram-scale value-added compounds with high productivity. The developed methodol. is efficient for aromatic or α,β-unsaturated aldehydes but gives moderate results for more stable acetophenone derivatives Moreover, the flow method displayed better results in terms of yield and selectivity in comparison to the corresponding batch methodol. To complete the study, the researchers used rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) .

Desymmetrization of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas:579-43-1 Category: alcohols-buliding-blocks) using chiral phosphine catalyst has been reported. Conversion of meso-hydrobenzoin to trans-stillbene oxide by treatment with an aryl sulfonyl chloride and aqueous sodium hydroxide has been reported.

Reference:
Alcohol – Wikipedia,
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Smith, Paul C.;Huf, Joel P.;Williams, Christopher A. published 《Rocket Propellant Comparison: Conventional Planetary Mixing and Resonant Acoustic Mixing》 in 2022. The article was appeared in 《Propellants, Explosives, Pyrotechnics》. They have made some progress in their research.Related Products of 119-47-1 The article mentions the following:

A standard HTPB/AP/Al composite rocket propellant formulation was prepared with a conventional vertical planetary action mixer and resonant acoustic mixer (RAM). Ingredients and process conditions were standardised as much as possible to facilitate a direct comparison of the two process regimes. Cured propellant specimens were characterised for sensitiveness, ballistic properties and mech. properties at 3 temperatures (-54°C, 25°C and 74°C). No significant differences were noted for sensitiveness between the planetary and RAM mixes. A slightly lower burn rate at 1000 psi (6.89 MPa) was noted for the RAM mixes. Maximum stress results at 25°C were similar but significant differences in maximum strain and modulus were recorded. Maximum strain for the 1 Pt, 2 Gal and RAM were 7.4%, 9.1% and 17.6%, resp. Modulus results were 26.0 MPa, 19.3 MPa and 11.1 MPa, resp. Similar improvements in strain capability for the RAM propellant were recorded at -54°C and 74°C, with increases of 66% and 117%, resp. A greater strain capability results from stronger interfacial adhesion between the solid fill and the binder, which is in turn generally a result of improved wetting of solid particles. This result, therefore, indicates more thorough mixing in the case of the RAM process but this requires confirmation through a more direct examination of the underlying mechanism. And 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) was used in the research process.

Related Products 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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Ruzickova, Jana;Raclavska, Helena;Safar, Michal;Kucbel, Marek;Svedova, Barbora;Raclavsky, Konstantin;Juchelkova, Dagmar;Scala, Fabrizio;Kantor, Pavel published 《Environmental risks related to organic compounds from the combustion of paper briquettes in domestic boilers》 in 2021. The article was appeared in 《Journal of Hazardous Materials》. They have made some progress in their research.SDS of cas: 140-66-9 The article mentions the following:

Environmental risks connected with the combustion of paper/cardboard briquettes are still not sufficiently known. This paper aims to bring attention to the risks related to the utilization of paper briquettes in local boilers and to characterize these risks by means of the identification of organic compounds in deposits from exhaust flues. The identification of the chem. compounds was performed by pyrolysis gas chromatog. with mass spectrometric detection. Paper/cardboard briquettes contain 119 compounds of biogenic origin derived from major biomass components and 53 additives. Additives are used both for improving the properties of paper and in printing inks. By burning the paper briquettes, the same 53 compounds from the additive group were caught in the deposits from the flue gas pathway, occurring in the range of 1-10% of the concentration of individual compounds (additives) contained in the input fuel. Compounds that are very stable during the combustion process have an enrichment factor (EF) > 30, which corresponded to approx. 3% of the additive capture in deposits. The highest values were found for plasticisers (phthalates). Many of the primary organic compounds contained in the input raw material do not decompose during combustion and can have adverse effects on human health. The experimental procedure involved many compounds, such as 4-tert-Octylphenol (cas: 140-66-9) .

4-tert-Octylphenol(cas: 140-66-9) has been used as a reference standard for the determination of the analyte in water samples using ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC/MS/MS).SDS of cas: 140-66-9

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Incili, Gokhan Kursad;Karatepe, Pinar;Akgol, Muzeyyen;Tekin, Ali;Kanmaz, Hilal;Kaya, Busra;Calicioglu, Mehmet;Hayaloglu, Ali Adnan published 《Impact of chitosan embedded with postbiotics from Pediococcus acidilactici against emerging foodborne pathogens in vacuum-packaged frankfurters during refrigerated storage》. The research results were published in《Meat Science》 in 2022.Computed Properties of C10H22O The article conveys some information:

The objective of the study was to carry out characterization of postbiotics from Pediococcus acidilactici and to assess their efficacy (50% and 100%) in combination with chitosan (0.5 and 1%) against Escherichia coli O157:H7, Salmonella Typhimurium, Listeria monocytogenes on frankfurters during refrigerated storage for 35 days. High amounts of total phenolic content (1708.15 ± 93.28 mg GAE/L) and carboxylic acids, which comprised 74.89% of the total volatiles, were found in the postbiotics. On day 0, the postbiotic-chitosan combinations decreased the E. coli O157:H7, L. monocytogenes and S. Typhimurium counts ranging from 1.58 to 3.21 log10 compared to the control in frankfurters (P < 0.05). Total viable count and number of lactic acid bacteria were effectively reduced in all treatment groups (P < 0.05), and postbiotic and chitosan treatments did not cause any changes in pH and color of the frankfurters. In conclusion, postbiotic-chitosan combinations can be used to reduce the risks that might be associated with E. coli O157:H7, L. monocytogenes, and S. Typhimurium in frankfurters. The experimental procedure involved many compounds, such as 3,7-Dimethyloctan-3-ol (cas: 78-69-3) .

3,7-Dimethyloctan-3-ol(cas:78-69-3) is a fatty alcohol that is 3-octanol substituted by methyl groups at positions 3 and 7.Computed Properties of C10H22O Metabolite observed in cancer metabolism. It has a role as a human metabolite.

Reference:
Alcohol – Wikipedia,
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Product Details of 224434-01-9In 2020, Shao, Wen;Besnard, Celine;Guenee, Laure;Mazet, Clement published 《Ni-Catalyzed Regiodivergent and Stereoselective Hydroalkylation of Acyclic Branched Dienes with Unstabilized C(sp³) Nucleophiles》. 《Journal of the American Chemical Society》published the findings. The article contains the following contents:

Two complementary regiodivergent [(P,N)Ni]-catalyzed hydroalkylations of branched dienes are reported. When amides are employed as unstabilized C(sp³) nucleophiles, a highly regioselective 1,4-addition process is favored. The addition products are obtained in high yield and with excellent stereocontrol of the internal olefin. With use of a chiral ligand and imides as carbon nucleophiles, a 3,4-addition protocol was developed, enabling construction of two contiguous tertiary stereocenters in a single step with moderate to high levels of diastereocontrol and excellent enantiocontrol. Both methods operate under mild reaction conditions, display a broad scope, and show excellent functional group tolerance. The synthetic potential of the 3,4-hydroalkylation reaction was established via a series of postcatalytic modifications. To complete the study, the researchers used (S)-2-Amino-2-(4-fluorophenyl)ethanol (cas: 224434-01-9) .

(S) – 2-amino-2 – (4-fluorophenyl) ethanol (cas: 224434-01-9) has the characteristics of alcohol. In general, the hydroxyl group makes alcohols polar. Those groups can form hydrogen bonds to one another and to most other compounds. Product Details of 224434-01-9

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Alcohol – Wikipedia,
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Gao, Xiaofang;Lin, Jiani;Zhang, Li;Lou, Xinyao;Guo, Guanghui;Peng, Na;Xu, Huan;Liu, Yi published 《Iodine-Initiated Dioxygenation of Aryl Alkenes Using tert-Butylhydroperoxides and Water: A Route to Vicinal Diols and Bisperoxides》 in 2021. The article was appeared in 《Journal of Organic Chemistry》. They have made some progress in their research.Reference of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol The article mentions the following:

An environment-friendly and efficient dioxygenation of aryl alkenes for the construction of vicinal diols ArCH(OH)CH(OH)R [Ar = Ph, 2-MeC₆H₄, 4-MeC₆H₄, etc.; R = H, Br, Me, etc.] was developed in water with iodine as the catalyst and tert-butylhydroperoxides (TBHPs) as the oxidant. The protocol was efficient, sustainable, and operationally simple. Detailed mechanistic studies indicated that one of the hydroxyl groups was derived from water and the other one was derived from TBHP. Addnl., the bisperoxides ArCH(OOtBu)CH(OOtBu)R [Ar = Ph, 4-MeC₆H₄, 3-FC₆H₄, etc.] could be obtained in good yields with iodine as the catalyst, Na₂CO₃ as the additive, and propylene carbonate as the solvent, instead. And rel-(1R,2S)-1,2-Diphenylethane-1,2-diol (cas: 579-43-1) was used in the research process.

Desymmetrization of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol(cas:579-43-1 Reference of rel-(1R,2S)-1,2-Diphenylethane-1,2-diol) using chiral phosphine catalyst has been reported. Conversion of meso-hydrobenzoin to trans-stillbene oxide by treatment with an aryl sulfonyl chloride and aqueous sodium hydroxide has been reported.

Reference:
Alcohol – Wikipedia,
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