Tag: 200-300

Anionic translocation in mitochondria. I. Transport of inorganic phosphate and dicarboxylic acids was written by Lofrumento, N. E.;Zanotti, F.. And the article was included in Bollettino – Societa Italiana di Biologia Sperimentale in 1975.Formula: C11H20O4 This article mentions the following:

N-ethylmalimide (I) had no effect on the exchange of phosphate or on phosphate-malate exchange across the liver mitochondrial membrane. Bu malonate (II) inhibited only the phosphate-malate exchange reaction. Both reactions were almost entirely inhibited by I plus II. The malate-succinate exchange was noncompetitively inhibited by II, whereas I stimulated the efflux of malate. Under equilibrium conditions, I had no influence on the succinate-induced efflux of malate but it abolished the inhibitory effect of II. Thus, the internal mitochondrial membrane probably contain only a single system for the transport of both inorganic phosphate and dicarboxylic acids. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Formula: C11H20O4).

malonic acid dibutyl ester (cas: 1190-39-2) 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.Formula: C11H20O4

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

Novel poly(butylenes succinate-block-1,3-propylene sebacate): synthesis and enzymatic degradation was written by Kang, Zonghua;Wang, Changlu. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2013.SDS of cas: 106-79-6 This article mentions the following:

In this study, a series of aliphatic biodegradable poly(butylene succinate-block-1,3-propylene sebacate) (PBS-b-PPS) copolyesters were synthesized by incorporation of PPS into the PBS mol. chains at various molar ratios. The effects of these compositions on the thermal properties, crystallinity and biodegradability were investigated. The PBS-b-PPS were characterized using ¹H NMR, DSC and POM. Biodegradability was evaluated by enzymic hydrolysis with a lipase from Pseudomonas cepacia. The copolyesters might be potentially useful as biodegradable materials. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6SDS of cas: 106-79-6).

Dimethyl decanedioate (cas: 106-79-6) 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. 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.SDS of cas: 106-79-6

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

Synthesis of Sulfanylated Difluoroalkenes: Electrophilic Difluoromethylidenation of Dithioesters with Difluorocarbene was written by Takayama, Ryo;Yamada, Atsushi;Fuchibe, Kohei;Ichikawa, Junji. And the article was included in Organic Letters in 2017.Quality Control of Benzyl benzodithioate This article mentions the following:

Electrophilic difluoromethylidenation of dithioesters was achieved in high yields via the reaction with difluorocarbene. When aryl or alkyl dithiocarboxylates were treated with trimethylsilyl 2,2-difluoro-2-fluorosulfonylacetate in the presence of 5 mol % of a Proton Sponge catalyst, the in situ generated difluorocarbene reacted with the dithioesters to afford 2-sulfanylated 1,1-difluoro-1-alkenes via difluorothiiranes. This reaction can be considered as an electrophilic counterpart of the Wittig-type difluoromethylidenation of carbonyl compounds with nucleophilic difluoromethylene ylides. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Quality Control of Benzyl benzodithioate).

Benzyl benzodithioate (cas: 27249-90-7) 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.Quality Control of Benzyl benzodithioate

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

Synthesis of 2-R-1,3-dioxanes, derivatives of functionally substituted aldehydes of vanillin series was written by Dikusar, E. A.;Potkin, V. I.;Zvereva, T. D.;Zhukovskaya, N. A.;Petkevich, S. K.;Pavlyuchenkova, A. S.;Murashova, M. Yu.;Polikarpov, A. P.;Shunkevich, A. A.;Yuvchenko, A. P.;Zolotar’, R. M.. And the article was included in Russian Journal of Organic Chemistry in 2013.Name: 4-Formyl-2-methoxyphenyl isobutyrate This article mentions the following:

By the condensation of substituted aldehydes of vanillin series with 1,3-propanediol in boiling benzene in the presence of sulfo cation exchanger FIBAN K-1 as catalyst functionally 2-R-substituted 1,3-dioxanes were synthesized. In the experiment, the researchers used many compounds, for example, 4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4Name: 4-Formyl-2-methoxyphenyl isobutyrate).

4-Formyl-2-methoxyphenyl isobutyrate (cas: 20665-85-4) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.Name: 4-Formyl-2-methoxyphenyl isobutyrate

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

Noncovalent Organocatalytic Synthesis of Enantioenriched Terminal Aziridines with a Quaternary Stereogenic Center was written by De Fusco, Claudia;Fuoco, Tiziana;Croce, Gianluca;Lattanzi, Alessandra. And the article was included in Organic Letters in 2012.Application In Synthesis of Ethyl 3-oxo-3-(m-tolyl)propanoate This article mentions the following:

A high-yielding and enantioselective access to novel N-Boc terminal aziridines, bearing a quaternary stereogenic center, has been developed via an aza-Michael initiated ring-closure (aza-MIRC) reaction of α-acyl acrylates with an N-tosyloxy tert-Bu carbamate catalyzed by a chiral amino thiourea. The feasibility of the aziridine regioselective ring-opening to valuable α,α-disubstituted α-amino acid esters has been demonstrated. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9Application In Synthesis of Ethyl 3-oxo-3-(m-tolyl)propanoate).

Ethyl 3-oxo-3-(m-tolyl)propanoate (cas: 33166-79-9) 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.Application In Synthesis of Ethyl 3-oxo-3-(m-tolyl)propanoate

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

Synthesis, Assembled Structures, and Optoelectronic Properties of Amphiphilic Block Copolymers Containing Anthracene Units in the Main Chain was written by Mori, Hideharu;Tanaka, Hiromi. And the article was included in Macromolecular Chemistry and Physics in 2011.Recommanded Product: 27249-90-7 This article mentions the following:

Novel amphiphilic block copolymers containing the anthracene unit in the main chain are synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of a cyclic monomer, 10-methylene-9,10-dihydroanthryl-9-spirophenylcyclopropane (MDS). A hydrophilic macro-chain transfer agent is prepared by RAFT polymerization of 2-hydroxyethyl acrylate (HEA). The polymerizations of MDS using the poly(HEA) afford amphiphilic block copolymers, in which the hydrophobic poly(MDS) segment has a perfectly alternating structure composed of an anthracene unit and a styrene unit, owing to the ring-opening polymerization system. Characteristic assembled structures and optoelectronic properties of the amphiphilic block copolymers are investigated in various selective solvents. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Recommanded Product: 27249-90-7).

Benzyl benzodithioate (cas: 27249-90-7) 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. 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.Recommanded Product: 27249-90-7

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

Selective monoesterification of the longer carbon chain in a mixture of dicarboxylic acids by adsorbing and aligning the acids on alumina was written by Ogawa, Haruo;Chihara, Teiji;Teratani, Shousuke;Taya, Kazuo. And the article was included in Journal of the Chemical Society, Chemical Communications in 1986.COA of Formula: C13H24O4 This article mentions the following:

When mixtures of dicarboxylic acids were absorbed on Al₂O₃ and treated with CH₂N₂ in vigorously agitated cyclohexane the longer carboxylic acid was selectively monomethylated. Thus, treating a mixture of HO₂C(CH₂)₁₀CO₂H and HO₂C(CH₂)₃CO₂H by the above procedure gave 89% MeO₂C(CH₂)₁₀CO₂H and 9% MeO₂C(CH₂)₃CO₂H. This selectivity is attributed to a perpendicular alignment of the acids with the Al₂O₃ surface that makes the nonabsorbed end of the longer acid more available to the CH₂N₂. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0COA of Formula: C13H24O4).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. 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.COA of Formula: C13H24O4

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

A new, modulated, oxidative ring-cleavage of α-nitro cycloalkanones by Oxone. Synthesis of α,ω-dicarboxylic acids and α,ω-dicarboxylic monomethyl esters was written by Ballini, Roberto;Curini, Massimo;Epifano, Francesco;Marcotullio, Maria Carla;Rosati, Ornelio. And the article was included in Synlett in 1998.COA of Formula: C13H24O4 This article mentions the following:

By the appropriate choice of the reaction conditions, Oxone produces the ring cleavage of α-nitro cycloalkanones affording good yields of α,ω-dicarboxylic acids and α,ω-dicarboxylic monomethyl esters, resp., regardless of the ring size and/or the presence of an alkyl group as substituent. In the experiment, the researchers used many compounds, for example, 12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0COA of Formula: C13H24O4).

12-Methoxy-12-oxododecanoic acid (cas: 3903-40-0) 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.COA of Formula: C13H24O4

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

Development of an optical sensor for determination of zinc by application of PC-ANN was written by Abbasitabar, Fatemeh;Zare-Shahabadi, Vali;Shamsipur, Mojtaba;Akhond, Morteza. And the article was included in Sensors and Actuators, B: Chemical in 2011.COA of Formula: C12H22O4 This article mentions the following:

A very sensitive and reversible optical chem. sensor based on dithizone as chromoionophore immobilized within a plasticized carboxylated PVC film for Zn²⁺ determination is described. At optimum conditions (i.e. pH 5.0), the proposed sensor displays a linear response to Zn²⁺ over 5.0 × 10^-8-5.0 × 10^-6 mol L^-1 range. This range was improved to 2.5 × 10^-8-5.8 × 10^-5 mol L^-1 range by applying principal component-feed forward artificial neural network with back-propagation training algorithm (PC-ANNB). Detection limit of 8.0 × 10^-9 mol L^-1 was obtained. The sensor is fully reversible within the dynamic range and the response time (t _95%) is â‰? min under batch conditions. In addition to its high stability and reproducibility, the sensor shows good selectivity towards Zn²⁺ ion with respect to common metal cations. The sensor was successfully applied for determination of Zn²⁺ ion in hair sample. In the experiment, the researchers used many compounds, for example, Dimethyl decanedioate (cas: 106-79-6COA of Formula: C12H22O4).

Dimethyl decanedioate (cas: 106-79-6) 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. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.COA of Formula: C12H22O4

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

Molecularly imprinted polymers by reversible addition-fragmentation chain transfer precipitation polymerization for preconcentration of atrazine in food matrices was written by Xu, Shoufang;Li, Jinhua;Chen, Lingxin. And the article was included in Talanta in 2011.HPLC of Formula: 27249-90-7 This article mentions the following:

Controlled/living free radical polymerization (CLRP) has been accepted as an effective technique in preparation of polymers because of its inherent advantages over traditional free radical polymerization In this work, reversible addition-fragmentation chain transfer (RAFT) polymerization, the ideal candidate for CLRP, was applied to prepare atrazine molecularly imprinted polymers (MIPs) by precipitation polymerization The resultant RAFT-MIPs demonstrated uniform spherical shape with rough surface containing significant amounts of micropores, leading to an improvement in imprinting efficiency compared with that of the MIPs prepared by traditional precipitation polymerization (TR-MIPs). The maximum binding capacities of the RAFT-MIPs and TR-MIPs were 2.89 mg g^-1 and 1.53 mg g^-1, resp. The recoveries ranging from 81.5% to 100.9% were achieved by one-step extraction by using RAFT-MIPs for preconcentration and selective separation of atrazine in spiked lettuce and corn samples. These results provided the possibility for the separation and enrichment of atrazine from complicated matrixes by RAFT-MIPs. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7HPLC of Formula: 27249-90-7).

Benzyl benzodithioate (cas: 27249-90-7) 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. 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.HPLC of Formula: 27249-90-7

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