Category: 1731-94-8

Catalytic hydroconversion of methanol-soluble portion from Xiaolongtan lignite over difunctional Ni/Z5A was written by Li, Wei-Tu;Wei, Xian-Yong;Liu, Xiang-Xue;Guo, Lu-Lu;Qi, Shi-Chao;Li, Zhan-Ku;Zhang, Dong-Dong;Zong, Zhi-Min. And the article was included in Fuel Processing Technology in 2016.Application In Synthesis of Methyl nonadecanoate The following contents are mentioned in the article:

A highly active difunctional supported nickel catalyst Ni/Z5A was prepared by thermally decomposing nickel carbonyl onto zeolite 5A (Z5A). The catalytic hydroconversion (CHC) of methanol-soluble portion (MSP) from the methanolysis of Xiaolongtan lignite was investigated over Ni/Z5A at 200 °C. Detailed mol. compositions of MSP and catalytically hydrogenated MSP (CHMSP) were characterized with a Fourier transform IR spectrometer, gas chromatograph/mass spectrometer (GC/MS), and neg.-ion electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (ESIFTICRMS). According to anal. with GC/MS, MSP is rich in aromatic ring- and/or heteroatom-containing compounds, while most of the GC/MS-detectable compounds in CHMSP are chain alkanes and cyclanes. The anal. with ESIFTICRMS shows that both the number and yields of oxygen- and/or nitrogen-containing species in MSP were dramatically reduced after the CHC. These facts indicate that Ni/Z5A effectively catalyzed heteroatom (especially O atom) removal from MSP and hydrogenation of MSP. Naphth-1-ol and oxybis(methylene)dibenzene (OBMDB) were used as lignite-related model compounds and their CHCs were investigated to further understand the catalysis of Ni/Z5A in the CHC of MSP. As a result, Ni/Z5A proved to have 2 functions, i.e., activating H₂ to biat. active hydrogen (BAAH) and heterolytically splitting H₂ to H⁺ relatively free from Ni/Z5A and H^– adsorbed on Ni/Z5A. Over Ni/Z5A, the CHCs of naphth-1-ol and OBMDB proceeded via BAAH and H⁺ transfer to mainly produce tetralin and decalin from naphth-1-ol and methylcyclohexane and toluene from OBMDB. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Application In Synthesis of Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Application In Synthesis of Methyl nonadecanoate

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Ester – Wikipedia,
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Development and optimization of chromatographic systems for separation of fatty acids by gas chromatographic method was written by Hadzhieva, Bozhidarka Radoslavova;Tsvetkova, Dobrina Doncheva;Obreshkova, Danka Petrova. And the article was included in World Journal of Pharmacy and Pharmaceutical Sciences in 2017.Related Products of 1731-94-8 The following contents are mentioned in the article:

The aim of current study was the optimization of chromatog. conditions for complete separation of Me esters of fatty acids by modifications of parameters: inlet pressure of carrier gas and temperature gradient. After application of Method 1 (inlet pressure of carrier gas: 10 Psi and temperature gradient: from 60°C to 135°C for mixture of Me Laurate, Me Palmitate, Me Heptadecanoate, Me Stearate, Me Nonadecanoate, Me Behenate, Me Lignocerate, Me Hexacosanoate, Me Palmitoleate, Me Oleate, Me Linolenate, was obtained good separation for all Me esters, excluding of critical couple of Me esters of Stearic acid and Linoleic acid. For optimization of their separation were found the more suitable conditions: inlet pressure of carrier gas was changed from 10 Psi to 15 Psi and temperature gradient was modified from 60°C to 160°C (Method 2). By this method Me esters of Stearic acid and Linolenic acids were separated completely, but the separation of the esters of Oleic acid and Linoleic acid was not satisfactory. Method 3 include inlet pressure of carrier gas 15 Psi and temperature program from 140°C to 240°C, provide completely separatation of all Me esters of fatty acids, inluding Me esters of Oleic acid and Linoleic acid and can be applied for rutine anal. of fatty acids in food additives, after derivatization to Me esters. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Related Products of 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Related Products of 1731-94-8

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Kinetics and characterization of transesterification of cottonseed oil to biodiesel using calcined clam shells as catalyst was written by Shobana, M.;Prasad, R. Krishna;Reddy Ragula, Udaya Bhaskar;Kumaresan, Duraisamy. And the article was included in Biofuels in 2020.Reference of 1731-94-8 The following contents are mentioned in the article:

The synthesis of biodiesel from cottonseed oil using heterogeneous calcined clam shells by transesterification was studied. The effects of the amount of catalyst and the oil-to-methanol ratio on the yield of the biodiesel produced were determined A maximum yield of 84% biodiesel was obtained. Various characterization tests such as Fourier transform IR spectroscopy (FT-IR), Gas Chromatog. – Mass Spectrometry and NMR Spectroscopy were carried out to ascertain the functional groups and compounds available in the product biodiesel obtained. The properties of the biodiesel using the calcined clamshell catalyst, such as d., viscosity, saponification value, iodine value and ester value, were estimated and compared with the American Society for Testing Materials standard values to determine the quality of the biodiesel produced. The yield of the biodiesel produced was modelled using response surface methodol., and contour regions were obtained. The surface morphol. of the catalyst was studied using a scanning electron microscope. From the kinetics results obtained, the forward rate constant of the adsorption of methanol onto the catalyst surface was found to be very low (1.467 × 10^-4), confirming that the kinetics of biodiesel production is limited by adsorption of methanol onto the active sites of the catalyst. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Reference of 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Reference of 1731-94-8

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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Eco-sustainable systems based on poly(lactic acid), diatomite and coffee grounds extract for food packaging was written by Cacciotti, Ilaria;Mori, Stefano;Cherubini, Valeria;Nanni, Francesca. And the article was included in International Journal of Biological Macromolecules in 2018.Electric Literature of C20H40O2 The following contents are mentioned in the article:

In the food packaging sector many efforts have been (and are) devoted to the development of new materials in order to reply to an urgent market demand for green and eco-sustainable products. Particularly a lot of attention is currently devoted both to the use of compostable and biobased polymers as innovative and promising alternative to the currently used petrochem. derived polymers, and to the re-use of waste materials coming from agriculture and food industry. In this work, multifunctional eco-sustainable systems, based on poly(lactic acid) (PLA) as biopolymeric matrix, diatomaceous earth as reinforcing filler and spent coffee grounds extract as oxygen scavenger, were produced for the first time, in order to provide a simultaneous improvement of mech. and gas barrier properties. The influence of the diatomite and the spent coffee grounds extract on the microstructural, mech. and oxygen barrier properties of the produced films was deeply investigated by means of X-Ray diffraction (XRD), IR spectroscopy (FT-IR, ATR), SEM (SEM), uniaxial tensile tests, O₂ permeabilimetry measurements. An improvement of both mech. and oxygen barrier properties was recorded for systems characterised by the co-presence of diatomite and coffee grounds extract, suggesting a possible synergic effect of the two additives. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Electric Literature of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Electric Literature of C20H40O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Identification of anti-hepatic fibrosis components in Periplaneta americana based on spectrum-effect relationship and chemical component separation was written by Fu, Wenpeng;Zhao, Yanwen;Xie, Jingjing;Yang, Yongshou;Xiao, Peiyun. And the article was included in Biomedical Chromatography in 2022.HPLC of Formula: 1731-94-8 The following contents are mentioned in the article:

Periplaneta americana (PA) is used as a traditional medicine for hepatic diseases such as hepatic fibrosis in China. However, the relationship between the corresponding therapeutic effect and the chem. composition is still unclear. In this study, spectrum-effect relationship and chem. component separation were used to discover the potential of anti-hepatic fibrosis components of PA. The fingerprints of 10 batches of samples were established using HPLC, and the anti-hepatic fibrosis effect was determined using HSC-T6 cells. The spectrum-effect relationship between common peaks and efficacy values was established using partial least squares anal. Partial peaks in the fingerprints were identified, including X4 (9,12-heptadecanedenoic acid glyceride), X5 (nonadecanoic acid Me ester), X6 (glyceryl oleate), X7 (13,16,19-eicosatrienoic acid), X9 (linoleic acid), X10 (9,12,15-octadecatrienoic acid glyceride), X12 (hexadecanoic acid), X13 (oleic acid), and X14 (octadecanoic acid), and their anti-hepatic fibrosis activity was tested to verify the results of spectrum-effect relationships. The results showed that X4, X6, X7, and X10 were the active ingredients of PA. This work successfully identified the partial anti-hepatic fibrosis components of PA, which can be used to explain the material basis for the PA anti-hepatic fibrosis effect. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8HPLC of Formula: 1731-94-8).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.HPLC of Formula: 1731-94-8

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Nocardia stercoris sp. nov., a novel actinomycete isolated from the cow dung was written by Zhao, Junwei;Han, Xiaoyang;Hu, Hailong;Ling, Ling;Zhang, Xue;Guo, Xiaowei;Wang, Xiangjing;Xiang, Wensheng. And the article was included in International Journal of Systematic and Evolutionary Microbiology in 2020.Synthetic Route of C20H40O2 The following contents are mentioned in the article:

A novel actinobacterial strain, designated NEAU-LL90T, was isolated from cow dung collected from Shangzhi, Heilongjiang Province, north-east PR China and characterized by using a polyphasic approach. Morphol. and chemotaxonomic characteristics were consistent with those members of the genus Nocardia. The polar lipids consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol and phosphatidylinositol mannoside. The predominant menaquinone detected was MK-8(H4, ω-cycl). Major fatty acids (>10%) were identified as C_16:0, C_18:1ω9c, C_18:0 and 10-Me C_19:0. Mycolic acids were present. The results of 16S rRNA gene sequence anal. showed that strain NEAU-LL90T belongs to the genus Nocardia with high sequence similarity to Nocardia niigatensis JCM11894T (98.1%), similarities to other type strains of species of the genus Nocardia were found to be lower than 98.0%. Furthermore, a combination of DNA-DNA hybridization results and some phenotypic characteristics demonstrated that strain NEAU-LL90T could be distinguished from its closest relative. Therefore, it is proposed that strain NEAU-LL90T represents a novel species of the genus Nocardia, for which the name Nocardia stercoris sp. nov. is proposed. The type strain is NEAU-LL90T (= CGMCC 4.7500T = JCM 32663T). This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Synthetic Route of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Synthetic Route of C20H40O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Ultrasonic-assisted phosphate curing: a novel approach to improve curing rate and chicken meat quality was written by Tong, Huiquan;Cao, Changwei;Du, Yanli;Liu, Yong;Huang, Wei. And the article was included in International Journal of Food Science and Technology in 2022.Quality Control of Methyl nonadecanoate The following contents are mentioned in the article:

The effects of ultrasound-assisted phosphate curing (UPC), phosphate curing (PC), and deionised water curing (DC) on the quality of chicken breast meat were investigated. The anal. of tissue sections, low-field NMR (LF-NMR), and headspace solid-phase microextraction gas-phase mass spectrometry (HS-SPME-GC-MS) of water distribution, myofibrillary structure, and volatile components of the meat samples were performed to reveal the mechanism. Also, the curing rate, water holding capacity (WHC), and shear force of meat were assessed. The results revealed that ultrasonic-assisted salting improved the meat salting rate, WHC, and tenderness by mech. destroying the muscle fiber structure, increasing the space between the muscle fiber bundles, promoting water migration and uniform distribution, and reducing water freedom in the treated samples. In addition, HS-SPME-GC-MS anal. revealed that PC significantly reduced the content of volatile flavor components in the chicken breast meat compared with DC (P < 0.05); however, the combination treatment with PC and ultrasonic curing could reconstruct the flavor loss caused by phosphate. Thus, our cumulative results suggest that the ultrasonic technol. may effectively assist the processing technol. in improving the quality of meat and reconstructing the flavor loss in meat products. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Quality Control of Methyl nonadecanoate).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Quality Control of Methyl nonadecanoate

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

One-step direct transesterification of wet yeast for biodiesel production catalyzed by magnetic nanoparticle-immobilized lipase was written by Cao, Xiyue;Xu, Hui;Li, Fosheng;Zou, Yijun;Ran, Yulu;Ma, Xiaorui;Cao, Yu;Xu, Qingrui;Qiao, Dairong;Cao, Yi. And the article was included in Renewable Energy in 2021.Electric Literature of C20H40O2 The following contents are mentioned in the article:

To develop a method for direct transesterification of wet yeast using immobilized lipase, the oleaginous yeast Saitozyma podzolica Zwy-2-3 and the lipase producing Burkholderia pyrrolica WZ10-3 were used as materials for production of biodiesel. Fe₃O₄@SiO₂-CHO prepared by modifying Fe₃O₄ with TEOS, APTES and glutaraldehyde. The biocatalysts covalently cross-linked with WZ10-3 lipase by Fe₃O₄@SiO₂-CHO were characterized by FTIR, XRD and TEM. When the enzyme dosage, glutaraldehyde concentration, temperature and time were 30.22 mL, 2.0%, 40°C and 4 h, the immobilized lipase activity and immobilization rate reached 10038.0 U/g and 96.9%, resp. The optimum temperatures for immobilized and free lipase were 60 degrees and 40 degrees. The immobilized enzyme still had 80% enzymic activity after 48 d storage at 4°C. The optimized conditions for the direct conversion of immobilized lipase to esterified wet yeast (one-step) were: enzyme dosage 2.5 g, reaction temperature 35°C; water content 15%; and molar ratio of n-hexane to methanol 3: 1. The transesterification rates of one-step method for oil and biomass were 98.12% and 56.11%, resp. In contrast, the two-step method was only 88.75% and 51.21%. The immobilized enzyme had 90% enzyme activity after 10 times of reuse. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Electric Literature of C20H40O2).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Electric Literature of C20H40O2

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Comparative study of three Achillea essential oils from eastern part of Turkey and their biological activities was written by Demirci, Betul;Baser, K. Husnu Can;Aytac, Zeki;Khan, Shabana I.;Jacob, Melissa R.;Tabanca, Nurhayat. And the article was included in Records of Natural Products in 2018.Category: esters-buliding-blocks The following contents are mentioned in the article:

Essential oils obtained by hydrodistillation were analyzed both by gas chromatog. (GC) and gas chromatog.-mass spectrometry (GC-MS). The main constituents found in Achillea oil were as follows: A. filipendulina Lam.: 43.8% santolina alc., 14.5% 1,8-cineole and 12.5% cis-chrysanthenyl acetate; A. magnifica Hiemerl ex Hub.-Mor.: 27.5% linalool, 5.8% spathulenol, 5.5% terpinen-4-ol, 4.7% α-terpineol and 4.7% β-eudesmol; A. tenuifolia Lam.: 12.4% artemisia ketone, 9.9% p-cymene, 7.1% camphor, 5.9% terpinen-4-ol, 4.7% caryophyllene oxide and 4.5% α-pinene. Furthermore, the Achillea essential oils were evaluated for antimalarial and antimicrobial activities. A. magnifica and A. filipendulina oils showed strong antimalarial activity against both chloroquine sensitive D6 (IC₅₀= 1.2 and 0.68 μg/mL) and chloroquine resistant W2 (IC₅₀= 1.1 and 0.9 μg/mL) strains of Plasmodium falciparum without any cytotoxicity to mammalian cells up to IC₅₀=47.6 μg/mL against Vero cells whereas A. tenuifolia oil showed no antimalarial activity up to a concentration of 20 mg/mL. All three Achillea oils showed no antibacterial activity against human pathogenic bacteria up to a concentration of 200 μg/mL. A. tenuifolia and A. magnifica oils demonstrated mild antifungal activity against Cryptococcus neoformans (IC₅₀= 45, 20 and 15 μg/mL, resp.). This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Category: esters-buliding-blocks).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chemical constituents of the goat margarine and antibacterial activity against bacterial Pathogens in Sudan was written by Abbas, Rasha Khalid. And the article was included in Journal of Pure and Applied Microbiology in 2019.Category: esters-buliding-blocks The following contents are mentioned in the article:

The margarine constituents were examined by Gas Chromatog.-Mass Spectrometry (GC-MS), it contained 41 compounds, fifteen of them were identified as the major compound, Hexadecanoic acid, Me ester (22.39%), Me stearate (14.92%), Me elaidate (13.80%), Me tetradecanoate (10.74%), Capric acid, Me ester (8.34%) Lauric acid (4.52%) Me octanoate (2.70%), linoleic acid Me ester (2.57%), Me 11-octadecenoate (1.90%), Me caproate (1.77%), Me pentadecanoate (1.72%), Me (8E,11E)-8,11-octadecadienoate (1.70%), Heptadecanoic acid, Me ester, (1.46%),trans-13-Octadecenoic acid, Me ester (Oleic acid) (1.20%), Me palmioleate (1.00%). The effect of goat margarine, against four different pathogenic bacteria Escherichia coli, Pseudomonas aeruginosa, Salmonella typhimurium, and Bacillus cereus, were carried out by using a disk diffusion technique, the highest antibacterial activity was detected against Salmonella typhimurium and the lowest one against Escherichia coli. The antibacterial activity of the antibiotics, (Ciprofloxacin, Tetracycline Ceftriaxone, Chloramphenicol and Gentamycin), were tested by the disk diffusion technique, and by measuring zones of inhibition, shows that there were differences, among all antibiotic the highest activity of antibiotic against bacteria was due to the action of ciprofloxacin. Ceftriaxone and Tetracycline antibiotic give lowest activity. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Category: esters-buliding-blocks).

Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Category: esters-buliding-blocks

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics