Tag: 300-400

Comparative study of fat properties and phenolic contents of fermented rambutan (Nephelium lappaceum L.) and pulasan (Nephelium mutabile Blume) seeds was written by Hamid, H. A.;Yahya, I. H.;Ramli, A. N. M.. And the article was included in International Food Research Journal in 2022.Electric Literature of C21H44O5 The following contents are mentioned in the article:

Rambutan and pulasan seeds are usually discarded as waste. However, the seeds contain a significant quantity of quality crude fat. Therefore, the present work was conducted to establish and compare the fat properties, and saponin and total phenolic contents of fermented rambutan and pulasan seeds. Results showed that the crude fat yields for rambutan and pulasan seeds were 3.98 and 7.41 g/10 g, resp. Results also showed decreases in crude fat by 41% for rambutan seeds, and 23% for pulasan seeds after fermentation The yields of the main fatty acid in rambutan and pulasan seeds, which was oleic acid, were 53.11 and 58.27%, resp. Only 0.81 and 37.25% of triacylglycerols remained in rambutan and pulasan seed fats, resp. after fermentation In addition, the melting temperature for both seed fats increased, while the saponin and total phenolic contents in rambutan and pulasan seeds decreased with increasing fermentation time. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Electric Literature of C21H44O5).

Glyceryl monostearate (cas: 31566-31-1) 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. 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 C21H44O5

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

Analgesic and antiinflammatory properties of some new salicylic acid derivatives, including QSAR was written by Langner, A.;Hagen, V.;Labes, D.;Krause, E.. And the article was included in Agents and Actions Supplements in 1982.Quality Control of 4-Acetamidophenyl 2-acetoxybenzoate The following contents are mentioned in the article:

Results from analgesic (hot-plate and radiant-heat methods) and antiinflammatory (carrageenin rat paw edema) activity screening in 21 salicylates showed that only 4 compounds [acetylsalicylic acid piperidide, pyrrolidide (I), p-hydroxyanilide [19065-81-7], and 2-pyrimidylamide [71924-69-1] derivatives] had analgesic activity comparable to that of acetylsalicylic acid and only 4 (I and the acetylsalicylic acid p-nitranilide  [25671-41-4], α-pyridylamide, and 2-nitro-4-methoxyanilide [36930-83-3] derivatives) had antiinflammatory activity comparable to that of salicylamide. The remaining substances were either weakly active or inactive. Hansch anal. was performed on a selected number of the substances and the results are discussed in relation to structural requirements for activity. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Quality Control of 4-Acetamidophenyl 2-acetoxybenzoate).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Quality Control of 4-Acetamidophenyl 2-acetoxybenzoate

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

Design, synthesis and biological evaluation of carbohydrate-based sulphonamide derivatives as topical antiglaucoma agents through selective inhibition of carbonic anhydrase II was written by Hou, Zhuang;Li, Chuanchao;Liu, Yichuang;Zhang, Miao;Wang, Yitong;Fan, Zhanfang;Guo, Chun;Lin, Bin;Liu, Yang. And the article was included in Journal of Enzyme Inhibition and Medicinal Chemistry in 2020.Category: esters-buliding-blocks The following contents are mentioned in the article:

A series of new carbohydrate-based sulfonamide derivatives were designed, synthesized by employing the so-call ‘sugar-tail’ approach. The compounds were evaluated in vitro against a panel of CAs. Compared to their parent compound p-sulfamoylbenzoic acid, these compounds showed nearly 100-fold improvement in their binding affinities against hCA II in vitro. All of compounds showed great water solubility and the pH value of their water solutions of compounds is 7.0. Such properties are advantageous to make them much less irritating to the eye when applied topical glaucomatous drugs, compared to the relatively highly acidic dorzolamide preparations (pH 5.5). Notably, compounds , , demonstrated to topically lower intraocular pressure (IOP) in glaucomatous animals better than brinzolamide when applied as a 1% solution directly into the eye. Low cytotoxicity on human cornea epithelial cell was observed in the tested concentrations by the MTT assay. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Category: esters-buliding-blocks).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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. Category: esters-buliding-blocks

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

Thymoquinone-loaded chitosan nanoparticles as natural preservative agent in cosmetic products was written by Mondejar-Lopez, Maria;Lopez-Jimenez, Alberto Jose;Martinez, Joaquin C. Garcia;Ahrazem, Oussama;Gomez-Gomez, Lourdes;Niza, Enrique. And the article was included in International Journal of Molecular Sciences in 2022.Recommanded Product: 31566-31-1 The following contents are mentioned in the article:

The current status of controversy regarding the use of certain preservatives in cosmetic products makes it necessary to seek new ecol. alternatives that are free of adverse effects on users. In our study, the natural terpene thymoquinone was encapsulated in chitosan nanoparticles. The nanoparticles were characterized by DLS and TEM, showing a particle size of 20 nm. The chem. structure, thermal properties, and release profile of thymoquinone were evaluated and showed a successful stabilization and sustained release of terpenes. The antimicrobial properties of the nanoparticles were evaluated against typical microbial contaminants found in cosmetic products, showing high antimicrobial properties. Furthermore, natural moisturizing cream inoculated with the aforementioned microorganisms was formulated with thymoquinone-chitosan nanoparticles to evaluate the preservative efficiency, indicating its promising use as a preservative in cosmetics. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Recommanded Product: 31566-31-1).

Glyceryl monostearate (cas: 31566-31-1) 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 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.Recommanded Product: 31566-31-1

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

Streamlined Iterative Assembly of Thio-Oligosaccharides by Aqueous S-Glycosylation of Diverse Deoxythio Sugars was written by Wen, Peng;Jia, Peijing;Fan, Qiuhua;McCarty, Bethany J.;Tang, Weiping. And the article was included in ChemSusChem in 2022.Application of 604-69-3 The following contents are mentioned in the article:

A streamlined iterative assembly of thio-oligosaccharides was developed by aqueous glycosylation. Facile syntheses of various deoxythio sugars with the sulfur on different positions from com. available starting materials were described. These syntheses featured efficient chem. methods including our recently reported BTM-catalyzed site-selective acylation. The resulting deoxythio sugars could then be used for the Ca(OH)₂-promoted protecting group-free S-glycosylation in water at room temperature The aqueous glycosylation reaction proceeded smoothly to afford the corresponding 1,2-trans S-glycosides in good yields with high chemo- and stereoselectivity. An appropriate choice of protecting groups for the thiol in the glycosyl donor was necessary for the development of iterative synthesis of thio-oligosaccharides. The aqueous glycosylation was then applied to the synthesis of a trimannoside moiety of N-linked glycans core region. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Application of 604-69-3).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. 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 of 604-69-3

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

Comparison of cell disruption methods for improving lipid extraction from thraustochytrid strains was written by Byreddy, Avinesh R.;Gupta, Adarsha;Barrow, Colin J.;Puri, Munish. And the article was included in Marine Drugs in 2015.Quality Control of Methyl nonadecanoate The following contents are mentioned in the article:

Lipid extraction is an integral part of biodiesel production, as it facilitates the release of fatty acids from algal cells. To utilize thraustochytrids as a potential source for lipid production We evaluated the extraction efficiency of various solvents and solvent combinations for lipid extraction from Schizochytrium sp. S31 and Thraustochytrium sp. AMCQS5-5. The maximum lipid extraction yield was 22% using a chloroform:methanol ratio of 2:1. We compared various cell disruption methods to improve lipid extraction yields, including grinding with liquid nitrogen, bead vortexing, osmotic shock, water bath, sonication and shake mill. The highest lipid extraction yields were obtained using osmotic shock and 48.7% from Schizochytrium sp. S31 and 29.1% from Thraustochytrium sp. AMCQS5-5. Saturated and monounsaturated fatty acid contents were more than 60% in Schizochytrium sp. S31 which suggests their suitability for biodiesel production 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. 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.Quality Control of Methyl nonadecanoate

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

Novel carbohydrate modified berberine derivatives: synthesis and in vitro anti-diabetic investigation was written by Han, Liwen;Sheng, Wenlong;Li, Xiaobin;Sik, Attila;Lin, Houwen;Liu, Kechun;Wang, Lizhen. And the article was included in MedChemComm in 2019.Related Products of 604-69-3 The following contents are mentioned in the article:

Berberine is a bioactive alkaloid used in Chinese medicine and has numerous pos. effects on biol. systems. This paper describes the facile and highly efficient synthesis of some carbohydrate modified berberine derivatives, and conjugation of the carbohydrate moiety with berberine was finished by “click” chem. The cytotoxicity and anti-diabetic measurements of all berberine derivatives were accomplished on HepG2 cell lines, and the results indicated that most of the derivatives exhibit higher anti-diabetic activity than berberine. The mannose modified berberine derivative has significantly lower cytotoxicity than berberine, and the induced IC50 value of this derivative is nearly 1.5 times that of berberine. Furthermore, this mannose modified berberine derivative exhibits high anti-diabetic activity at both high and low drug concentrations, thereby indicating its potential application for the development of novel anti-diabetic drugs. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Related Products of 604-69-3).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. Related Products of 604-69-3

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

Enantiomeric synthesis of natural alkylglycerols and their antibacterial and antibiofilm activities was written by Fernandez Montoya, Deicy J.;Contreras Jordan, Luis A.;Moreno-Murillo, Barbara;Silva-Gomez, Edelberto;Mayorga-Wandurraga, Humberto. And the article was included in Natural Product Research in 2021.Name: Methyl nonadecanoate The following contents are mentioned in the article:

Alkylglycerols (AKGs) are bioactive natural compounds that vary by alkyl chain length and degree of unsaturation, and their absolute configuration is 2S. Three AKGs were synthesized in enantiomerically pure form, and were characterized for the 1st time together with 12 other known and naturally occurring AKGs. Their structures were established using ¹H and ¹³C APT NMR with 2D-NMR, ESI-MS, or HRESI-MS and optical rotation data, and they were tested for their antibacterial and antibiofilm activities. Some AKGs showed activity against 5 clin. isolates and Pseudomonas aeruginosa ATCC 15442, with MIC values in the range of 15-125μg/mL. In addition, at half of the MIC, most of the AKGs reduced Staphylococcus aureus biofilm formation in the range of 23-99% and P. aeruginosa ATCC 15442 biofilm formation in the range of 14-64%. The antibiofilm activity of the AKGs assessed in this work had not previously been studied. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Name: Methyl nonadecanoate).

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. 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.Name: Methyl nonadecanoate

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

Phenyl glycosides – Solid-state NMR, X-ray diffraction and conformational analysis using genetic algorithm was written by Walejko, Piotr;Bukowicki, Jaroslaw;Dobrzycki, Lukasz;Socha, Pawel;Paradowska, Katarzyna. And the article was included in Chemical Physics in 2019.Name: (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate The following contents are mentioned in the article:

The X-ray structures of 2,6-dimethylphenyl and Ph 2,3,4,6-tetra-O-acetyl β-glucosides and Ph α-mannoside were obtained. The independent part of the unit cell of the glycosides was formed by one mol., and for another glucoside, two mols. in the crystal cell were observed In deacetylated glycosides the crystal structure was established by a hydrogen bond network formed between the sugar hydroxyls and solvent mols. The ¹³C CPMAS NMR spectra of aryl glycosides were analyzed. In the spectrum of Ph peracetylated glucoside, doubling of the C4 aryl signal was observed which confirmed the presence of two independent mols. in the solid sample. The GAAGS (Genetic Algorithm-Assisted Grid Search) method was used to determine the low-energy conformers of α-mannosides and β-glucosides. The orientation of the aryl pendant group was calculated using Mol. Mechanics (MMFF94) as well as Quantum Mechanics theory (DFT, B3LYP/6-31 + G(d,p)). This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Name: (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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, including apples, durians, pears, bananas, pineapples, and strawberries. 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.Name: (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate

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

Synthesis and characterization of a small library of bis-glucosides: Influence of the nature of the diol/diphenol used in O-glucosylation was written by Patry, Stephane;Robitzer, Mike;Habas, Jean-Pierre. And the article was included in Carbohydrate Research in 2021.Electric Literature of C16H22O11 The following contents are mentioned in the article:

In this paper, the synthesis of different bisglucosides is investigated through the reaction of two acetylated glucose units with a diol (or diphenol) in order to develop a versatile mol. platform for the future development of bio-based polymers. A panel of five diols and one diphenol is initially used in order to examine the influence of their chem. skeleton on the reaction yield and both nature and proportion of formed species. Reaction products are identified using ¹H and ¹³C NMR spectroscopies completed by MALDI-TOF MS technique. The nucleophilicity of these dihydroxy compounds is identified as being the main factor that governs the reaction characteristics. In particular, the best selectivity is obtained with the use of hydroquinone. Inversely, byproducts (oligomers, deacetylated compounds) are observed with the diols defined by higher nucleophilicity despite the choice of stereoselective pathway using acyl protecting groups. This study involved multiple reactions and reactants, such as (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3Electric Literature of C16H22O11).

(2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate (cas: 604-69-3) 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. 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.Electric Literature of C16H22O11

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