Month: October 2022

Ethers do have nonbonding electron pairs on their oxygen atoms, 122775-35-3, formula is C8H11BO4, Name is 3,4-Dimethoxyphenylboronic acid. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds. Computed Properties of 122775-35-3.

Zhang, Chenlu;Zhu, Hai;Gang, Kaiyue;Tao, Minli;Ma, Ning;Zhang, Wenqin research published 《 Immobilization of copper(II) into polyacrylonitrile fiber toward efficient and recyclable catalyst in Chan-Lam coupling reactions》, the research content is summarized as follows. A series of polyacrylonitrile fiber (PANF)-supported copper(II) catalysts were prepared through the immobilization of Cu(II) into prolinamide-modified PANF (PAN_PA-2F) and subsequently used for the synthesis of diverse N-arylimidazoles from arylboronic acids and imidazole. The prepared Cu(II)@PAN_PA-2Fs were well characterized by mech. strength, FT-IR, XRD, XPS and SEM. Among them, CuCl₂@PAN_PA-2F exhibited excellent catalytic performance and its activity was significantly affected by the Cu loading. This catalytic system also displayed good activity in the synthesis of N-arylsulfonamides from arylboronic acids and tosyl azide. The catalyst was highly efficient in gram-scale reactions and could be reused five times. The advantages of low cost, easy preparation, good durability, and facile recovery made the fiber catalyst attractive.

Computed Properties of 122775-35-3, 3,4-Dimethoxyphenylboronic acid is a useful research compound. Its molecular formula is C8H11BO4 and its molecular weight is 181.98 g/mol. The purity is usually 95%.
3,4-Dimethoxyphenylboronic acid contains varying amounts of anhydride.
3,4-Dimethoxyphenylboronic acid is a bacterial mutagen. A useful intermediate for organic synthesis.
3,4-Dimethoxyphenylboronic acid is a boronate ester that has been shown to be an effective coupling partner for the Suzuki reaction. It has also been used in cancer therapy and as a photochemical probe for the study of biological properties. 3,4-Dimethoxyphenylboronic acid has been shown to demethylate DNA and inhibit methionine aminopeptidase activity. It also cross-couples with halides, such as chlorides or iodides, and activates tertiary alcohols. 3,4-Dimethoxyphenylboronic acid is soluble in organic solvents and can be used in supramolecular chemistry., 122775-35-3.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers do have nonbonding electron pairs on their oxygen atoms, 530-59-6, formula is C11H12O5, Name is 3,5-Dimethoxy-4-hydroxycinnamic acid. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds. Computed Properties of 530-59-6.

Zhang, Bo;Shi, Xiao;Zhang, Yu;Wang, Qiang;Zhou, Pan-pan;Li, Yun-kui;Tao, Yong-sheng research published 《 The implication of phenolic acid matrix effect on the volatility of ethyl acetate in alcohol-free wine model: Investigations with experimental and theoretical methods》, the research content is summarized as follows. Hydroxycinnamic acids and Et acetate were assessed in simulated alc.-free wine solutions to explore the effect of phenolic acids on the aroma volatility of esters. The results showed that the phenolic acids could inhibit the volatilization of Et acetate, and the extent of inhibition was influenced by the concentration and structure of the phenolic compounds The UV absorption spectra of the phenolic acids and Et acetate confirmed the interaction between the two compounds The thermodn. parameters of the interaction implied a spontaneous exothermic interaction, driven primarily by hydrophobic effects. Meanwhile, the results of the fluorescence-quenching anal. indicated electron transfer between the reactants. The quantum chem. investigations revealed neg. and pos. charge d. distributions in the structures of Et acetate and the phenolic acids, resp. These results will provide some data reference and theor. support for further research on the effects of phenolic acid matrix on other structural esters.

Computed Properties of 530-59-6, Sinapinic acid is a chemical compound that is the dihydroxybenzoic acid derivative of sinapic acid. It has been shown to have anti-inflammatory properties in vitro and in vivo. Sinapinic acid inhibits the activity of various enzymes, such as cyclooxygenase (COX), lipoxygenase (LOX), and 5-lipoxygenase-activating protein (FLAP). It also decreases levels of adhesion molecules and downregulates inflammatory response genes. Sinapinic acid has been shown to reduce inflammation by inhibiting the formation of proinflammatory mediators, such as prostaglandin E2 or leukotriene B4, in endothelial cells and mammary epithelial cells.
Sinapic acid is a phenylpropanoid hydroxycinnamic acid with diverse biological activities. Sinapic acid inhibits collagen-induced human platelet aggregation by up to 70% in vitro (IC50 = 1.03 mM). It scavenges 2,2-diphenyl-1-picrylhydrazyl (DPPH; ) and 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) free radicals with IC50 values of 8.3 and 5.4 μg/ml, respectively. Sinapic acid (200 μM) reduces colony formation of SW480 human colon carcinoma cells by 4-fold. It also inhibits colony formation of E. coli, S. enteritidis, and S. aureus on agar (MICs = 2.2, 2, and 1.8 mM, respectively). In vivo, sinapic acid (4 mg/kg, p.o.) increases the time spent in the open arms of the elevated plus maze by approximately 15% in mice, an effect that can be blocked by the GABAA receptor antagonists flumazenil and bicuculline. Sinapic acid is also commonly used as a matrix in protein mass spectrometry.
Sinapic acid analytical standard provided with w/w absolute assay, to be used for quantitative titration.
Sinapic acid is an hydroxycinnamic acid derivative that occurs naturally in Brassicaceae species.
cis-Sinapic acid, also known as cis-sinapate or synapitic acid, belongs to the class of organic compounds known as hydroxycinnamic acids. Hydroxycinnamic acids are compounds containing an cinnamic acid where the benzene ring is hydroxylated. cis-Sinapic acid is considered to be a practically insoluble (in water) and relatively neutral molecule. Within the cell, cis-sinapic acid is primarily located in the cytoplasm. Outside of the human body, cis-sinapic acid can be found in common pea and pulses. This makes cis-sinapic acid a potential biomarker for the consumption of these food products.
Cis-sinapic acid is a 3-(4-hydroxy-3,5-dimethoxyphenyl)prop-2-enoic acid in which the double bond has cis-configuration. It has been isolated from the shoots of alfalfa. It has a role as a plant metabolite., 530-59-6.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. 122775-35-3, formula is C8H11BO4, Name is 3,4-Dimethoxyphenylboronic acid. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3. Electric Literature of 122775-35-3.

Zeng, Yan;Nie, Lifei;Liu, Liu;Niu, Chao;Li, Yi;Bozorov, Khurshed;Zhao, Jiangyu;Shen, Jingshan;Aisa, Haji Akber research published 《 Design, synthesis, in vitro evaluation of a new pyrrolo[1,2-a]thiazolo[5,4-d]pyrimidinone derivatives as cholinesterase inhibitors against Alzheimer’s disease》, the research content is summarized as follows. Synthesis of pyrrolo[1,2-a]thiazolo[5,4-d]pyrimidinone derivatives I (R = Ph, 2-methylphenyl, 4-(trifluoromethyl)phenyl, etc.) were designed as cholinesterase inhibitor agents. The in vitro enzyme assays proved that most of the compounds effectively inhibited cholinesterases in the micromolar range with little cytotoxicity. Compound I (R = 4-(trifluoromethyl)phenyl) exhibited the best inhibitory activity against acetylcholinesterase with an IC₅₀ of 2.69±0.17μ M. Kinetic anal. and mol. modeling testified that the competitive inhibition manner of I (R = 4-(trifluoromethyl)phenyl) was more likely to bind to the active center of acetylcholinesterase. Thus, compound I (R = 4-(trifluoromethyl)phenyl) can be considered as promising lead compounds or candidates for the development of novel drugs against Alzheimer’ disease.

Electric Literature of 122775-35-3, 3,4-Dimethoxyphenylboronic acid is a useful research compound. Its molecular formula is C8H11BO4 and its molecular weight is 181.98 g/mol. The purity is usually 95%.
3,4-Dimethoxyphenylboronic acid contains varying amounts of anhydride.
3,4-Dimethoxyphenylboronic acid is a bacterial mutagen. A useful intermediate for organic synthesis.
3,4-Dimethoxyphenylboronic acid is a boronate ester that has been shown to be an effective coupling partner for the Suzuki reaction. It has also been used in cancer therapy and as a photochemical probe for the study of biological properties. 3,4-Dimethoxyphenylboronic acid has been shown to demethylate DNA and inhibit methionine aminopeptidase activity. It also cross-couples with halides, such as chlorides or iodides, and activates tertiary alcohols. 3,4-Dimethoxyphenylboronic acid is soluble in organic solvents and can be used in supramolecular chemistry., 122775-35-3.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers can again be classified into two varieties: if the alkyl or aryl groups are the same on both sides of the oxygen atom, 111-90-0, formula is C6H14O3, Name is Diethylene Glycol Monoethyl Ether. Then it is a simple or symmetrical ether, whereas if they are different, the ethers are called mixed or unsymmetrical ethers. HPLC of Formula: 111-90-0.

Zeng, Ruolan;Deng, Jiyong;Dang, Limin;Yu, Xinliang research published 《 Correlation between the structure and skin permeability of compounds》, the research content is summarized as follows. A three-descriptor quant. structure-activity/toxicity relationship (QSAR/QSTR) model was developed for the skin permeability of a sufficiently large data set consisting of 274 compounds, by applying support vector machine (SVM) together with genetic algorithm. The optimal SVM model possesses the coefficient of determination R² of 0.946 and root mean square (rms) error of 0.253 for the training set of 139 compounds; and a R² of 0.872 and rms of 0.302 for the test set of 135 compounds Compared with other models reported in the literature, our SVM model shows better statistical performance in a model that deals with more samples in the test set. Therefore, applying a SVM algorithm to develop a nonlinear QSAR model for skin permeability was achieved.

HPLC of Formula: 111-90-0, Diethylene glycol monoethyl ether appears as a colorless, slightly viscous liquid with a mild pleasant odor. Flash point near 190°F. Used to make soaps, dyes, and other chemicals.
Diethylene glycol monoethyl ether is a primary alcohol that is ethanol substituted by a 2-ethoxyethoxy group at position 2. It has a role as a protic solvent. It is a diether, a primary alcohol and a hydroxypolyether. It derives from a diethylene glycol., 111-90-0.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers can again be classified into two varieties: if the alkyl or aryl groups are the same on both sides of the oxygen atom, 111-90-0, formula is C6H14O3, Name is Diethylene Glycol Monoethyl Ether. Then it is a simple or symmetrical ether, whereas if they are different, the ethers are called mixed or unsymmetrical ethers. Recommanded Product: Diethylene Glycol Monoethyl Ether.

Zeng, Lijuan;Yang, Guangqiang;Liu, Jianping;Quan, Danyi;Song, Wenting research published 《 Probing Dynamic Behavior of Chemical Enhancers Passing In and Out of the Stratum Corneum and Modulation by Biodegradable Enhancer》, the research content is summarized as follows. Chem. enhancers (CEs) decreased the barrier of the stratum corneum (SC) to enhance drug permeation. This was a ′′dynamic′′ behavior, which involved three processes including passing in, acting on, and passing out of the SC. However, compared with mature ′′static′′ researches about acting on the SC, the other two processes were poorly understood. This work aimed to probe the dynamic behavior of CEs and modulate it for satisfactory effectiveness. The investigating method of CEs′ dynamic behavior was established to obtain the rate of CEs passing in and out of the SC. An anal. attribution was conducted to obtain the possible reasons for the quite different dynamic behavior of CEs based on log P, solubility parameter, and min. binging energy. It demonstrated the rate of CEs passing in and out of the SC was dependent on CE affinity with the SC and the interaction between CEs and the SC, resp. The relevance between CEs′ dynamic behavior and the extent of decreasing SC barrier was confirmed by transepidermal water loss (TEWL). The higher rate of CE passing in the SC and a lower rate of passing out of the SC may contribute to an increased concentration of CEs in the SC, leading to a stronger ability to decrease the SC barrier. More importantly, two biodegradable CEs (Leu-Dod and Ser-Dod) of dodecanol were synthesized and achieved a modulation of its dynamic behavior to obtain more satisfactory effectiveness of enhancing drug permeation. This work was meaningful for the guidance of rationally promoting CEs′ effectiveness from a dynamic perspective, which was an unprecedented attempt in this field.

Recommanded Product: Diethylene Glycol Monoethyl Ether, Diethylene glycol monoethyl ether appears as a colorless, slightly viscous liquid with a mild pleasant odor. Flash point near 190°F. Used to make soaps, dyes, and other chemicals.
Diethylene glycol monoethyl ether is a primary alcohol that is ethanol substituted by a 2-ethoxyethoxy group at position 2. It has a role as a protic solvent. It is a diether, a primary alcohol and a hydroxypolyether. It derives from a diethylene glycol., 111-90-0.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers are a class of organic compounds that contain an ether group—an oxygen atom connected to two alkyl or aryl groups. 111-90-0, formula is C6H14O3, Name is Diethylene Glycol Monoethyl Ether.They have the general formula R–O–R′, where R and R′ represent the alkyl or aryl groups. Computed Properties of 111-90-0.

Zeng, Jia;Xie, Tan-Fang;Huang, Ting;Li, Fang;Wang, Zhi-Ping;Feng, Ling-Lin research published 《 Preparation and In Vitro and In Vivo Evaluation of a Testosterone Film Forming Gel for the Treatment of Hypoactive Sexual Desire Disorder in Women》, the research content is summarized as follows. Hypoactive sexual desire disorder (HSDD) is one of the most common sexual complaints in women. Currently, there is an unmet need for a drug treatment for this disorder. The purpose of this study was to develop a testosterone (TS) film forming gel used for women to treat HSDD by measuring the tackiness, peel adhesion force, tensile strength, and elasticity of the formulation. Diethylene glycol monoethyl ether (Transcutol P), an efficient penetration enhancer, was added to the optimized formulation and the transdermal permeation characteristics in vitro were studied using Franz-diffusion cells. The quant. determination of TS was performed by high-performance liquid chromatog. (HPLC). After 24 h, Transcutol P at 3% had the largest cumulative amount of drug and enhancement ratio of TS of 75.14μg/cm2 and 2.82, resp. After the screening of film forming polymers and penetration enhancers, the optimal formulation was as follows: glycerol (1%, weight/weight); 12.5% sodium CM-cellulose (CMC-Na) aqueous solution (0.5%, weight/weight); 2.5% Carbomer ethanol solution (0.5%, weight/weight); Transcutol P ethanol solution (3%, weight/weight) containing 0.5% TS; and 8% Poly vinyl alc. (PVA) aqueous solution (30%, weight/weight). The optimized film forming gel had good uniformity and the release of TS in vitro was close to 100% within 24 h. In vivo studies showed the formulations had optimal area under blood drug concentration curve values in the order of 3% Transcutol P > 1% Transcutol P > 5% Transcutol P > control preparation The formulation with 3% Transcutol P provided the highest permeation effect both in vitro and in vivo. The safety of this formulation was further evaluated with a skin irritation test. It could effectively improve the rabbit skin irritation observed with a marketed transdermal patch Androderm. The present study provides a promising approach for the development of a novel TS film forming gel for the treatment of HSDD in women.

Computed Properties of 111-90-0, Diethylene glycol monoethyl ether appears as a colorless, slightly viscous liquid with a mild pleasant odor. Flash point near 190°F. Used to make soaps, dyes, and other chemicals.
Diethylene glycol monoethyl ether is a primary alcohol that is ethanol substituted by a 2-ethoxyethoxy group at position 2. It has a role as a protic solvent. It is a diether, a primary alcohol and a hydroxypolyether. It derives from a diethylene glycol., 111-90-0.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers lack the hydroxyl groups of alcohols. Without the strongly polarized O―H bond, ether molecules cannot engage in hydrogen bonding with each other. 111-90-0, formula is C6H14O3, Name is Diethylene Glycol Monoethyl Ether. Ethers do have nonbonding electron pairs on their oxygen atoms, however, and they can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O―H or N―H bonds. SDS of cas: 111-90-0.

Zarghampour, Aynaz;Moradi, Milad;Rahimpour, Elaheh;Martinez, Fleming;Zhao, Hongkun;Jouyban, Abolghasem research published 《 Solubility study of lamotrigine in the aqueous mixture of choline chloride based deep eutectic solvent at different temperatures》, the research content is summarized as follows. Solubility and thermodn. properties of lamotrigine as a practically insoluble drug in binary mixtures of choline chloride / propylene glycol deep eutectic solvent and water are determined by shake-flask method followed by a spectrophotometric method at the temperature range of 293.2-313.2 K. The acquired molar data are correlated to the linear and non-linear solubility models including van’t Hoff, the mixture response surface, the Jouyban-Acree, the Jouyban-Acree-van’t Hoff, the modified Wilson and the λh equations. The accuracy of each model is tested by the mean relative deviation of the back-calculated solubility data. Moreover, the apparent thermodn. properties of lamotrigine dissolution are also calculated based on the van’t Hoff and Gibbs equations.

111-90-0, Diethylene glycol monoethyl ether appears as a colorless, slightly viscous liquid with a mild pleasant odor. Flash point near 190°F. Used to make soaps, dyes, and other chemicals.
Diethylene glycol monoethyl ether is a primary alcohol that is ethanol substituted by a 2-ethoxyethoxy group at position 2. It has a role as a protic solvent. It is a diether, a primary alcohol and a hydroxypolyether. It derives from a diethylene glycol., SDS of cas: 111-90-0

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers can again be classified into two varieties: if the alkyl or aryl groups are the same on both sides of the oxygen atom, 530-59-6, formula is C11H12O5, Name is 3,5-Dimethoxy-4-hydroxycinnamic acid. Then it is a simple or symmetrical ether, whereas if they are different, the ethers are called mixed or unsymmetrical ethers. SDS of cas: 530-59-6.

Zannou, Oscar;Pashazadeh, Hojjat;Ibrahim, Salam A.;Koca, Ilkay;Galanakis, Charis M. research published 《 Green and highly extraction of phenolic compounds and antioxidant capacity from kinkeliba (Combretum micranthum G. Don) by natural deep eutectic solvents (NADESs) using maceration, ultrasound-assisted extraction and homogenate-assisted extraction》, the research content is summarized as follows. Kinkeliba (C. micranthum) is a tropical plant widely used for its tremendous phytochems. and biol. activities. In the present study, three green carboxylic acid-based natural deep eutectic solvents (NADESs) were used to assess the extraction of phenolic compounds in terms of total phenolic content (TPC), total flavonoid content (TFC), individual phenolic compounds and antioxidant capacity (DPPH and FRAP assays) from dried C. micranthum leaves. For the synthesis of NADESs choline chloride was used as hydrogen bond acceptors (HBA) in combination with lactic acid (ChLa), acetic acid (ChAa) and tartaric acid (ChTa) as hydrogen bond donors (HBDs). The conventional solvents including distilled water, pure methanol and pure ethanol were used for comparison. Three extraction methods including maceration extraction (ME), homogenate-assisted extraction (HAE) and ultrasound-assisted extraction (UAE) were tested to determine the best extraction conditions. The solvents combined with the extraction methods were successfully applied for the recovery of phenolic compounds from C. micranthum leaves. ChLa exhibited the highest performance giving the TPC (21.12 ± 0.13-23.62 ± 0.58 mg GAE/g), followed by ChAc (15.49 ± 0.13-18.85 ± 0.39 mg GAE/g), water (17.08 ± 0.32-18.13 ± 0.13 mg GAE/g), ChTa (14.49 ± 0.26-17.44 ± 0.19 mg GAE/g), methanol (7.46 ± 0.45-11.64 ± 0.32 mg GAE/g) and ethanol (2.88 ± 0.39-4.60 ± 0.39 mg GAE/g), resp. For TFC, ChLa (4.38 ± 0.09-5.01 ± 0.09 mg ECE/g) was the most prominent solvent, followed by ChAc (2.84 ± 0.04-5.01 ± 0.36 mg ECE/g), methanol (1.93 ± 053-4.85 ± 0.04 mg ECE/g), ethanol (1.49 ± 0.36-4.16 ± 0.04 mg ECE/g), ChTa (1.09 ± 0.04-3.22 ± 0.13 mg ECE/g) and water (1.15 ± 0.04-1.37 ± 0.44 mg ECE/g), resp. The acidic NADESs especially ChLa and ChAa exhibited the best efficiencies compared to the conventional solvents. Furthermore, UAE and HAE provided good extraction efficiency in a short extraction time (30 min) in terms of the TPC, TFC, individual phenolic compounds and the antioxidant capacity compared to ME which gave a similar yield with 12 h of extraction time. Principal component anal. (PCA) showed that C. micranthum extracts could clearly be discriminated in terms of phytochem. compounds and antioxidant capacity and UAE, HAE or ME combined with ChLa ChAc or ChTa were the best choices to higher extraction efficiency.

SDS of cas: 530-59-6, Sinapinic acid is a chemical compound that is the dihydroxybenzoic acid derivative of sinapic acid. It has been shown to have anti-inflammatory properties in vitro and in vivo. Sinapinic acid inhibits the activity of various enzymes, such as cyclooxygenase (COX), lipoxygenase (LOX), and 5-lipoxygenase-activating protein (FLAP). It also decreases levels of adhesion molecules and downregulates inflammatory response genes. Sinapinic acid has been shown to reduce inflammation by inhibiting the formation of proinflammatory mediators, such as prostaglandin E2 or leukotriene B4, in endothelial cells and mammary epithelial cells.
Sinapic acid is a phenylpropanoid hydroxycinnamic acid with diverse biological activities. Sinapic acid inhibits collagen-induced human platelet aggregation by up to 70% in vitro (IC50 = 1.03 mM). It scavenges 2,2-diphenyl-1-picrylhydrazyl (DPPH; ) and 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonate) (ABTS) free radicals with IC50 values of 8.3 and 5.4 μg/ml, respectively. Sinapic acid (200 μM) reduces colony formation of SW480 human colon carcinoma cells by 4-fold. It also inhibits colony formation of E. coli, S. enteritidis, and S. aureus on agar (MICs = 2.2, 2, and 1.8 mM, respectively). In vivo, sinapic acid (4 mg/kg, p.o.) increases the time spent in the open arms of the elevated plus maze by approximately 15% in mice, an effect that can be blocked by the GABAA receptor antagonists flumazenil and bicuculline. Sinapic acid is also commonly used as a matrix in protein mass spectrometry.
Sinapic acid analytical standard provided with w/w absolute assay, to be used for quantitative titration.
Sinapic acid is an hydroxycinnamic acid derivative that occurs naturally in Brassicaceae species.
cis-Sinapic acid, also known as cis-sinapate or synapitic acid, belongs to the class of organic compounds known as hydroxycinnamic acids. Hydroxycinnamic acids are compounds containing an cinnamic acid where the benzene ring is hydroxylated. cis-Sinapic acid is considered to be a practically insoluble (in water) and relatively neutral molecule. Within the cell, cis-sinapic acid is primarily located in the cytoplasm. Outside of the human body, cis-sinapic acid can be found in common pea and pulses. This makes cis-sinapic acid a potential biomarker for the consumption of these food products.
Cis-sinapic acid is a 3-(4-hydroxy-3,5-dimethoxyphenyl)prop-2-enoic acid in which the double bond has cis-configuration. It has been isolated from the shoots of alfalfa. It has a role as a plant metabolite., 530-59-6.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. 111-90-0, formula is C6H14O3, Name is Diethylene Glycol Monoethyl Ether. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3. Recommanded Product: Diethylene Glycol Monoethyl Ether.

Zafar, Ameeduzzafar;Yasir, Mohd;Alruwaili, Nabil K.;Imam, Syed Sarim;Alsaidan, Omar Awad;Alshehri, Sultan;Ghoneim, Mohammed M.;Alquraini, Ali;Rawaf, Alenazy;Ansari, Mohammad Javed;Sara, Udai Vir Singh research published 《 Formulation of Self-Nanoemulsifying Drug Delivery System of Cephalexin: Physiochemical Characterization and Antibacterial Evaluation》, the research content is summarized as follows. A cephalexin (CEP) self-nanoemulsifying drug delivery system (SNEDDS) was developed in this study to improve the drug’s oral administration. The CEP-SNEDDS was made utilizing an aqueous titration method employing Lauroglycol 90, Poloxamer 188, and Transcutol-HP. Box-Behnken design (BBD) with three factors at three levels was used for optimization, and their impacts on globule size (nm), transmittance (percent), and emulsification time (s) were assessed. The optimized formulation (Opt-F3) was further tested for zeta potential, refractive index, percent transmittance, thermodn. stability, in-vitro release, ex vivo permeability, antibacterial activity, and bioavailability. The chosen formulation (Opt-F3) had a globule size of 87.25 ± 3.16 nm, PDI of 0.25, zeta potential of -24.37 mV, self-emulsification duration of 52 ± 1.7 s, and percentage transmittance of 99.13 ± 1.5%, viscosity of 96.26 ± 2.72 cp, and refractive index of 1.29 ± 0.1. It showed a sustained release profile (94.28 ± 5.92 percent in 24 h). The Opt-F3 formulation had 3.95 times the permeability of CEP-dispersion. In comparison to CEP-dispersion, it also demonstrated greater antibacterial efficacy against tested Gram-pos. and Gram-neg. pathogens. The oral bioavailability of Opt-F3 is 3.48 times higher than that of CEP-dispersion, according to an in-vivo investigation. It has been determined that the prepared CEP-SNEDDS may be an advantageous carrier for CEP delivery.

Recommanded Product: Diethylene Glycol Monoethyl Ether, Diethylene glycol monoethyl ether appears as a colorless, slightly viscous liquid with a mild pleasant odor. Flash point near 190°F. Used to make soaps, dyes, and other chemicals.
Diethylene glycol monoethyl ether is a primary alcohol that is ethanol substituted by a 2-ethoxyethoxy group at position 2. It has a role as a protic solvent. It is a diether, a primary alcohol and a hydroxypolyether. It derives from a diethylene glycol., 111-90-0.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. 73724-45-5, formula is C18H17NO5, Name is Fmoc-Ser-OH. The barrier to rotation about the C–O bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3. Related Products of 73724-45-5.

Yu, Ziqiang;Tang, Hua;Cong, Wei;Gao, Fei;Li, Huaqiang;Hu, Honggang;Wang, Xiaoyan;He, Shipeng research published 《 Hydrocarbon stapling modification of peptide Alyteserin-2a: Discovery of novel stapled peptide antitumor agents》, the research content is summarized as follows. Alyteserin-2a (ILGKLLSTAAGLLSNL-NH₂) is isolated from the skin exudates of midwife toad and has a wide range of biol. applications. However, the use of alyteserin-2a as an antitumor agent is limited due to its structural flexibility. In this study, a series of stapled peptides were prepared through hydrocarbon stapling modification without destroying the key residues, and their chem. and biol. properties were further evaluated for enhancing the application potential of alyteserin-2a in the field of antitumor drugs development. Among them, alyteserin-2a-Sp3 displayed significant improvement in helicity levels, protease resistance, and antitumor activity compared to that of the template peptide alyteserin-2a, indicating that alyteserin-2a-Sp3 had a potential to become a lead compound for the development of novel antitumor drugs. This study confirms the important effect of hydrocarbon stapling strategy on the secondary structure, hydrolase stability, and biol. activity of alyteserin-2a.

73724-45-5, Fmoc-Ser-OH, also known as Fmoc-Ser-OH, is a useful research compound. Its molecular formula is C18H17NO5 and its molecular weight is 327.3 g/mol. The purity is usually 95%.
Fmoc-L-Ser-OH is a synthetic peptide that belongs to the group of glycopeptides. It is used as a model for such compounds and has been shown to have antimicrobial activity in vitro against gram-positive bacteria, especially Staphylococcus epidermidis. This compound was synthesized from 3-mercaptopropionic acid and chloride in the presence of hydroxyl groups and epidermal growth factor. The synthetic pathway can be divided into three steps: (1) condensation of 3-mercaptopropionic acid with hydrochloric acid to yield 3-mercaptoacrylic acid; (2) esterification of 3-mercaptoacrylic acid with glycine to form Fmoc-L-Ser; and (3) deprotection of Fmoc protecting group., Related Products of 73724-45-5

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem