Month: February 2023

New heteroleptic magnesium complexes for MgO thin film application was written by Kim, Hyo-Suk;George, Sheby Mary;Park, Bo Keun;Son, Seung Uk;Kim, Chang Gyoun;Chung, Taek-Mo. And the article was included in Dalton Transactions in 2015.Recommanded Product: 14123-48-9 This article mentions the following:

Novel heteroleptic magnesium complexes, [Mg(dmamp)(acac)]₂ (1), [Mg(dmamp)(tmhd)]₂ (2), [Mg(dmamp)(tfac)]₂ (3), and [Mg(dmamp)(hfac)]₂ (4), were successfully synthesized using dimethylhydroxyisobutylamine (dmamp) and β-diketonate as ligands. The thermogravimetric analyses and volatile studies of the complexes showed that the complexes 2 and 4 display high volatility and thermal stability. The single crystal x-ray study of the complexes reveals that both the complexes 1 and 2 were crystallized in the triclinic space group and as dimers, where magnesium atoms are in the pentacoordinate state with distorted trigonal bipyramidal geometry. In the experiment, the researchers used many compounds, for example, 1-(Dimethylamino)-2-methylpropan-2-ol (cas: 14123-48-9Recommanded Product: 14123-48-9).

1-(Dimethylamino)-2-methylpropan-2-ol (cas: 14123-48-9) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Tertiary alcohols cannot be oxidized at all without breaking carbon-carbon bonds, whereas primary alcohols can be oxidized to aldehydes or further oxidized to carboxylic acids.Recommanded Product: 14123-48-9

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Efficient oxygen evolution photocatalyst of BiOBr: In situ light-induced formation of surface oxygen vacancies and application in water splitting was written by Zhang, Mei;Xie, Fangxia;Zhang, Lulu;Jian, Xuan;Liu, Jianxin;Zhang, Xiaochao;Wang, Yawen;Li, Rui;Fan, Caimei. And the article was included in Materials Letters in 2022.SDS of cas: 111-46-6 This article mentions the following:

The slow rate of oxygen evolution severely limits the overall water splitting, constructing oxygen vacancies on the surface of photocatalysts is an effective strategy in improving the performance of catalysts. However, the oxygen vacancies can be easily renovated by the adsorbed water and oxygen, then deactivating the catalysts. Herein, we synthesized a nanoflower BiOBr, which could produce continuously sufficient OVs induced by light during the photocatalytic water splitting, and investigated the effect of OVs concentration on the performance of photocatalytic O₂ evolution. The results showed that the sustainable light-induced OVs could improve the transfer efficiency of photoinduced carriers and the light absorption capacity, which then cause a significant increase in reaction rates. The optimal oxygen evolution rate could reach 166μmol·g^-1·h^-1. This work provides a new way of constructing sustainable oxygen vacancies on the surface of catalysts toward photocatalytic water splitting. In the experiment, the researchers used many compounds, for example, 2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6SDS of cas: 111-46-6).

2,2′-Oxybis(ethan-1-ol) (cas: 111-46-6) belongs to alcohols. The oxygen atom of the strongly polarized O―H bond of an alcohol pulls electron density away from the hydrogen atom. This polarized hydrogen, which bears a partial positive charge, can form a hydrogen bond with a pair of nonbonding electrons on another oxygen atom. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.SDS of cas: 111-46-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Micro- and Nanocarriers for Encapsulation of Biological Plant Protection Agents: A Systematic Literature Review was written by Pinto, Tania V.;Silva, Claudia A.;Siquenique, Sonia;Learmonth, David A.. And the article was included in ACS Agricultural Science & Technology in 2022.HPLC of Formula: 499-75-2 This article mentions the following:

Biol. plant protection agents (BPPAs) are proposed as sustainable alternatives to chem.-based pesticides to face threats caused by pests and diseases emerging due to climate change. The present Review was conducted to identify the most promising materials to encapsulate and deliver BPPAs for pest and disease control with improved efficacy, increased systemic activity, and lower environmental impact. Searches on Scopus and Web of Science databases from inception up to June 30, 2022, revealed a total of 98 reports that met the eligibility criteria, 45% of which described the use of (1) naturally sourced polymers, such as chitosan (36%), alginate (23%) and plant-based proteins (16%); (2) synthetic polymers (35%); (3) inorganic materials (19%); and (4) microorganisms (1%). The review confirmed that micro- and nanoencapsulation of BPPAs using carrier materials of marine/terrestrial/synthetic sources should provide the agricultural community access to safer and more sustainable plant protection products. In the experiment, the researchers used many compounds, for example, 5-Isopropyl-2-methylphenol (cas: 499-75-2HPLC of Formula: 499-75-2).

5-Isopropyl-2-methylphenol (cas: 499-75-2) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Grignard and organolithium reagents are powerful tools for organic synthesis, and the most common products of their reactions are alcohols.HPLC of Formula: 499-75-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Characterization of key odor-active compounds in pure chicken powder and the effect of yeast extract, using instrumental and sensory techniques was written by Shen, Dong-Yu;Li, Meng-Ke;Zhao, Mu;Li, Jie;Cui, Xinyue;Zou, Ting-Ting;Song, Huan-Lu;Xiong, Jian;Li, Ku. And the article was included in Journal of Food Composition and Analysis in 2023.Recommanded Product: 3391-86-4 This article mentions the following:

Pure chicken powder (PCP) is a reliable source of mellow chicken soup flavor in seasoning, but it has some unstable compounds and is prone to lipid oxidation, which leads to unpleasant odor. Adding yeast extract (YE) can reduce the off-odor intensity of PCP. Based on the results of gas chromatog.-olfactometry-mass spectrometry (GC-O-MS), two-dimensional comprehensive gas chromatog.-olfactometry-mass spectrometry (GCxGC-O-MS) and combined aroma extract dilution anal. (AEDA), 14 key odor-active compounds were identified. Internal standard curve method was used for quant. anal., and the odor activity value (OAV) was calculated Octanal, 1-octen-3-ol and hexanal were found to be the most vital odor-active compounds in PCP. The odor-active compounds of YE were studied by the same method, and di-Me trisulfide was identified as the most important odor-active compound of YE. Addnl., recombination and omission experiments were carried out with PCP. Finally, it was found that a low concentration of di-Me trisulfide had masking effect on the odor of PCP. In the experiment, the researchers used many compounds, for example, Oct-1-en-3-ol (cas: 3391-86-4Recommanded Product: 3391-86-4).

Oct-1-en-3-ol (cas: 3391-86-4) belongs to alcohols. Under appropriate conditions, inorganic acids also react with alcohols to form esters. To form these esters, a wide variety of specialized reagents and conditions can be used. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Recommanded Product: 3391-86-4

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

De Novo Asymmetric Bio- and Chemo-Catalytic Synthesis of Saccharides – Stereoselective Formal O-Glycoside Bond Formation Using Palladium Catalysis was written by Comely, Alex C.;Eelkema, Rienk;Minnaard, Adriaan J.;Feringa, Ben L.. And the article was included in Journal of the American Chemical Society in 2003.Quality Control of 3-(Hydroxymethyl)-4-nitrophenol This article mentions the following:

A novel integrated bio- and chemo-catalytic approach to the de novo catalytic asym. synthesis of saccharides has been developed. Acetoxypyranones obtained enantiopure by enzymic resolution have been shown to undergo highly stereoselective palladium-catalyzed formal O-glycoside bond formation. The combination of these protocols can be applied to asym. catalytic synthesis of saccharides. In the experiment, the researchers used many compounds, for example, 3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9Quality Control of 3-(Hydroxymethyl)-4-nitrophenol).

3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9) belongs to alcohols. Similar to water, an alcohol can be pictured as having an sp3 hybridized tetrahedral oxygen atom with nonbonding pairs of electrons occupying two of the four sp3 hybrid orbitals. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Quality Control of 3-(Hydroxymethyl)-4-nitrophenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Non-covalent interactions of selected flavors with pea protein: Role of molecular structure of flavor compounds was written by Bi, Shuang;Pan, Xin;Zhang, Wentao;Ma, Zhuo;Lao, Fei;Shen, Qun;Wu, Jihong. And the article was included in Food Chemistry in 2022.Reference of 57-55-6 This article mentions the following:

The influence of the mol. structures of flavor compounds (specifically, variations in chain length and functional groups) on the binding of the flavor compounds (Z)-2-penten-1-ol, hexanal, and (E)-2-octenal to pea protein was investigated. The results showed that the mol. structures of the flavor compounds strongly influenced their binding affinity for pea protein. Specifically, (E)-2-octenal exhibited a higher binding affinity and a higher Stern-Volmer constant with pea protein than both hexanal and (Z)-2-penten-1-ol. Thermodn. anal. indicated that the flavor compound-pea protein interactions were spontaneous. Hydrophobic interactions were dominant in the non-covalent interactions between (E)-2-octenal/(Z)-2-penten-1-ol and pea protein, whereas hydrogen bonding was dominant in the non-covalent interactions between hexanal and pea protein. Surface hydrophobicity measurements, the use of bond-disrupting agents, and mol. docking further supported the hypothesis that hydrogen bonding, as well as hydrophobic interactions, occurred between the flavor compounds and pea protein. In the experiment, the researchers used many compounds, for example, 1,2-Propanediol (cas: 57-55-6Reference of 57-55-6).

1,2-Propanediol (cas: 57-55-6) belongs to alcohols. A strong base can deprotonate an alcohol to yield an alkoxide ion (R―O−). For example, sodamide (NaNH2), a very strong base, abstracts the hydrogen atom of an alcohol. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Reference of 57-55-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Highly soluble sulfur-rich [Ni(L)(^siS₃)] complexes containing the new ligand bis(2-mercapto-3-trimethylsilylphenyl) sulfide(2-) (^siS₃^2-) was written by Sellmann, Dieter;Prakash, Raju;Geipel, Franz;Heinemann, Frank W.. And the article was included in European Journal of Inorganic Chemistry in 2002.Recommanded Product: 29364-29-2 This article mentions the following:

The new organosulfur ligands ^siS₃-H₂ [^siS₃^2- = bis(2-mercapto-3-trimethylsilylphenyl) sulfide(2-)] and ^caS₃-H₂ [^caS₃^2- = bis(2-mercapto-3-carboxyphenyl) sulfide(2-)] were synthesized from ^HS₃-H₂ [^HS₃^2- = bis(2-mercaptophenyl) sulfide(2-)], BuLi, and Me₃SiCl or CO₂/H⁺. Reaction of ^siS₃-H₂ with Ni(acac)₂·4H₂O gave the air-stable and well-soluble trinuclear complex I, [Ni(^siS₃)]₃ (1), whose structure was determined by x-ray crystallog. Reactions of complex 1 with nucleophiles L [L = PR₃ (R = Pr, Ph, Cy), N₂H₄, S^tBu^–, and Cl^–] yielded the corresponding neutral or anionic complexes, which were isolated as [Ni(PR₃)(^siS₃)] [R = Pr (2), Ph (3), Cy (4)], Bu₄N[Ni(Cl)(^siS₃)] (5), Bu₄N[Ni(StBu)(^siS₃)] (6), and [Ni(N₂H₄)(^siS₃)] (8). The azido complex Et₄N[Ni(N₃)(^siS₃)] (7) was prepared from Me₃SiN₃ and the precursor chloro complex Et₄N[Ni(Cl)(^siS₃)] formed in situ. Reaction of 1 with NH₃ yielded labile [Ni(NH₃)(^siS₃)] (9), which was characterized in solution by ¹H and ¹³C NMR spectroscopy. Analogously, 1 reacts with nicotinamide (NA) or diethylnicotinamide (NAEt₂) to give, from equilibrium reactions, the corresponding mononuclear [Ni(L)(^siS₃)] complexes with L = NA, NAEt₂. X-ray structure determinations showed that 1, 3, 4, 5, and 7 all exhibit tetrahedrally distorted planar [Ni(L)(^siS₃)] fragments. Complex 7 is the first structurally characterized azidonickel complex with a coligand having exclusively S donors. In the experiment, the researchers used many compounds, for example, Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2Recommanded Product: 29364-29-2).

Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.Recommanded Product: 29364-29-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Metal-free visible light-promoted synthesis of isothiazoles: a catalytic approach for N-S bond formation from iminyl radicals under batch and flow conditions was written by Cabrera-Afonso, Maria Jesus;Cembellin, Sara;Halima-Salem, Adnane;Berton, Mateo;Marzo, Leyre;Miloudi, Abdellah;Maestro, M. Carmen;Aleman, Jose. And the article was included in Green Chemistry in 2020.HPLC of Formula: 29364-29-2 This article mentions the following:

A sustainable synthesis of isothiazoles was developed using an α-amino-oxy acid auxiliary and applying photoredox catalysis. This simple strategy features mild conditions, broad scope and wide functional group tolerance represented a new environmentally friendly option to prepare these highly valuable heterocycles. Furthermore, the synthetic value of the method was highlighted by the preparation of a natural product derivative and the implementation of the reaction in a continuous flow setup. In the experiment, the researchers used many compounds, for example, Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2HPLC of Formula: 29364-29-2).

Sodium 2-methyl-2-propanethiolate (cas: 29364-29-2) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.HPLC of Formula: 29364-29-2

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Passion fruit seed extract protects beta-amyloid-induced neuronal cell death in a differentiated human neuroblastoma SH-SY5Y cell model was written by Sato, Akira;Tagai, Nozomi;Ogino, Yoko;Uozumi, Haruka;Kawakami, Shinpei;Yamamoto, Takayuki;Tanuma, Sei-ichi;Maruki-Uchida, Hiroko;Mori, Sadao;Morita, Minoru. And the article was included in Food Science & Nutrition (Hoboken, NJ, United States) in 2022.Quality Control of (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol This article mentions the following:

Alzheimers disease (AD) is a progressive neurodegenerative disease with accompanying perceptive disorder. We previously reported that decreasing levels of brain-derived neurotrophic factor (BDNF) promoted beta-amyloid (Aβ)-induced neuronal cell death in neuron-like differentiated SH-SY5Y (ndSH-SY5Y) human neuroblastoma cells in an AD mimic cell model. We investigated the neuroprotective effects of passion fruit seed extract (PFSE) and one of the main stilbene compounds, piceatannol, in an AD cell model using ndSH-SY5Y cells. Both PFSE and piceatannol were found to protect Aβ-induced neurite fragmentation in the cell model (protection efficacy; 34in PFSE and 36in piceatannol). In addition, both PFSE and piceatannol suppress Aβ-induced neuronal cell death in the cell model (inhibitory effect; 27in PFSE and 32in piceatannol). Our study is the first to report that piceatannol-rich PFSE can repress Aβ-induced neuronal cell death by protecting against neurite fragmentation in the AD human cell model. These findings suggest that piceatannol-rich PFSE can be considered a potentially neuroprotective functional food for both prevention and treatment of AD. In the experiment, the researchers used many compounds, for example, (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6Quality Control of (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol).

(E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6) belongs to alcohols. Alcohols are among the most common organic compounds. They are used as sweeteners and in making perfumes, are valuable intermediates in the synthesis of other compounds, and are among the most abundantly produced organic chemicals in industry. The most common reactions of alcohols can be classified as oxidation, dehydration, substitution, esterification, and reactions of alkoxides.Quality Control of (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Universal strategy for sugar replacement in foods was written by van der Sman, R. G. M.;Jurgens, A.;Smith, A.;Renzetti, S.. And the article was included in Food Hydrocolloids in 2022.HPLC of Formula: 149-32-6 This article mentions the following:

In this paper we present a sugar replacements strategy, derived from phys. theory, which we think is applicable for a wide range of food categories. The strategy is based on the hypothesis that reformulated foods must mimic the values of two phys. characteristic numbers, related to the plasticizing and hygroscopic properties of sugar, to reproduce the texture of a sugar-rich product. We will show the validity of the strategy for reformulated biscuits, using exptl. determination of phys. properties of dough and baked biscuits, as well as sensorial evaluation by a trained panel. Our investigations shown that the majority of these phys. and sensorial attributes correlate with the two phys. characteristic numbers Furthermore, multiple reformulations can be defined which are close to the reference product (in terms of the two phys. characteristic numbers), which are indeed scored similar by the trained sensory panel. Hence, our strategy also leaves room for further optimization of the reformulated food towards dietary fiber content, laxative properties or sweetness. In the experiment, the researchers used many compounds, for example, (2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6HPLC of Formula: 149-32-6).

(2R,3S)-rel-Butane-1,2,3,4-tetraol (cas: 149-32-6) belongs to alcohols. Alcohols are weak acids. The most acidic simple alcohols (methanol and ethanol) are about as acidic as water, and most other alcohols are somewhat less acidic. Under carefully controlled conditions, simple alcohols can undergo intermolecular dehydration to give ethers. This reaction is effective only with methanol, ethanol, and other simple primary alcohols.HPLC of Formula: 149-32-6

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts