Tag: 300-400

Determination of residual solvents in Benorilate by headspace gas chromatography was written by Yang, Xujian;You, Qiuping;Huang, Yanna;Chen, Haitao;Chen, Zilong. And the article was included in Jinri Yaoxue in 2014.Recommanded Product: 4-Acetamidophenyl 2-acetoxybenzoate The following contents are mentioned in the article:

Objective: To establish a method of headspace gas chromatog. for the determination of the residual solvents in Benorilate. Methods: The Anal. Technol. AT · OV-1301 capillary column (30 m × 0.32 mm × 1.00 μm) with a flame ionization detector (FID) was adopted, and nitrogen gas was used as carrier. The temperatures of the injector inlet and the detector were set at 200°C and 250, resp. Split ratio was 2 : 1, and the flow rate was 1.0 mL/min. The column temperature was 100°C. Samples were equilibrated at 85°C for 30 min. External standard method was used with the dimethylacetylamide as solvent. Results: Excellent resolution and good linear calibration curves of the residual solvents were obtained. Conclusion: This accurate and sensitive method can be applied in the detection of residual solvents in Benorilate. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Recommanded Product: 4-Acetamidophenyl 2-acetoxybenzoate).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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. 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.Recommanded Product: 4-Acetamidophenyl 2-acetoxybenzoate

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

Determination of benorilate in pharmaceutical formulations and its metabolite in urine at carbon paste electrode modified by silver nanoparticles was written by Wang, Cheng Yin;Hu, Xiao Ya. And the article was included in Talanta in 2005.Related Products of 5003-48-5 The following contents are mentioned in the article:

Benorilate was determined by the differential pulse voltammetry (DPV) using a carbon paste electrode modified by silver nanoparticles in 1.25 × 10^-3 mol l^-1 KH₂PO₄ and Na₂HPO₄ buffer solution (pH = 6.88, 25 °C) . The anodic peak potential was +0.970 V (vs. SCE). A good linear relationship was realized between the anodic peak currents and benorilate concentrations in the range of 1.0 × 10^-7 to 2.5 × 10^-4 mol l^-1 with the detection limit of 1.0 × 10^-8 mol l^-1. The recovery was 95.2-103.6% with the relative standard deviation of 3.6% (n = 9). The pharmaceutical preparations, benorilate tablets samples and its metabolite (salicylic acid) in urine were determined with the desirable results. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Related Products of 5003-48-5).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) 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.Related Products of 5003-48-5

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

Optimization of subcritical fluid extraction of oil from tree peony (Paeonia suffruticosa Andr.) seeds was written by Yao, Mao-jun;Li, Jing. And the article was included in Shipin Kexue (Beijing, China) in 2014.Application In Synthesis of Methyl nonadecanoate The following contents are mentioned in the article:

An orthogonal array design was employed to optimize the subcritical fluid extraction of seed oil from tree peony (Paeonia suffruticosa Andr.). The fatty acid composition and physicochem. properties of the seed oil were analyzed. The results showed that the optimum extraction conditions were determined to be extraction at 50°C and 0.5 MPa performed three times for 30 min each, resulting in an oil yield of 24.16%. Twelve fatty acids were identified in the extracted seed oil and the major fatty acids were linolenic acid (45.4122%), linoleic acid (38.1199%), palmitic acid (11.1246%) and stearic acid (3.6489%). The physicochem. indexes were as follows: relative d. 0.9013, index of refraction 1.4742, acid value 3.25 mg/g, iodine value 175 g/100 g, saponification value 176 mg/g, and peroxide value 1.48 meq/kg. 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 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 In Synthesis of Methyl nonadecanoate

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

Determination of pediatric benorilate and vitamin B₁ granules by HPLC was written by Gu, Qiuqin. And the article was included in Zhongguo Yaoshi (Wuhan, China) in 2010.Safety of 4-Acetamidophenyl 2-acetoxybenzoate The following contents are mentioned in the article:

The objective of this study is to establish an HPLC method for the determination of benorilate and vitamin B₁ in pediatric benorilate and vitamin B₁ granules. The Shim-pack VP-ODS (150 mm × 4.6 mm, 5 μm) column was used. The mobile phase consisted of methanol and 0.005 mol/L^-1 heptane sulfonic acid sodium solution(50:50, pH adjusted to 3.5 with phosphoric acid). The flow rate was 1.0 mL/min^-1 with a detector wavelength at 260 nm and column temperature was 30°. The linear range of benorilate was 18.052-162.468 mg/L^-1 (r = 0.9999, n = 5), the average recovery was 100.2% (RSD = 1.2%, n = 6). The linear range of vitamin B₁ was 5.956-53.604 mg/L^-1 (r = 0.9999, n = 5), the average recovery was 99.3% (RSD = 2.1%, n = 6). This method is simple, accurate, and suitable. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Safety of 4-Acetamidophenyl 2-acetoxybenzoate).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Safety of 4-Acetamidophenyl 2-acetoxybenzoate

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

Low-cost and High-efficient Extraction of Lipids from Chlorella by using Industrial Ionic Liquids was written by Lu, Haitao;Yu, Xinhai;Tu, Shan-Tung. And the article was included in Energy Procedia in 2017.COA of Formula: C20H40O2 The following contents are mentioned in the article:

Algae-sourced feedstocks remain confined to commercialization because of the high cost and energy consumption of biomass cultivation and feedstock extraction In this study, to reduce the cost required for algae extraction, experiments with Chlorella vulgais extraction by ionic liquids (ILs) synthesized using industrial raw materials. The total fabrication cost of the synthesized [BMIM]Cl was 1.63% of the price of com. reagent ILs. The average of the lipids yield was 75.4%, which is lower than that of 85.4% using com. reagent grade [BMIM]Cl. The initial cost of the synthesized [BMIM]Cl for the extraction was 1.85% that of com. reagent grade one. The IL loss due to [BMIM]Cl purification using alumina column chromatog. was 88.6%. The impurities contained in the synthesized [BMIM]Cl was gradually removed with the recirculation of [BMIM]Cl. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8COA of Formula: 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. 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.COA of Formula: C20H40O2

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

Estimation of Vapor Pressures and Enthalpies of Vaporization of Biodiesel-Related Fatty Acid Alkyl Esters. Part 2. New Parameters for Classic Vapor Pressure Correlations was written by Evangelista, Nathan S.;do Carmo, Frederico R.;de Sant’Ana, Hosiberto B.. And the article was included in Industrial & Engineering Chemistry Research in 2017.Safety of Methyl nonadecanoate The following contents are mentioned in the article:

In Part I of this series of articles, predictive models capable of estimating vapor pressures and enthalpies of vaporization of biodiesel-related esters were reviewed. In this study, we propose component-specific parameters for classic vapor pressure correlations. First, the previously collected database was evaluated and used in the regression of Antoine coefficients for all compounds Then, a constrained regression methodol. was employed to generate extrapolatable Wagner parameters for the esters whose exptl. critical properties were available. Finally, expressions derived from the Clausius-Clapeyron equation were investigated for the estimation of enthalpies of vaporization. A comparative anal. of the results produced by our parameters and by others available in the literature encourages the use of our values in future applications. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Safety 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. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Safety of Methyl nonadecanoate

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

Photo Click Reaction of Acylsilanes with Indoles was written by Stuckhardt, Constantin;Wissing, Maren;Studer, Armido. And the article was included in Angewandte Chemie, International Edition in 2021.Application of 604-69-3 The following contents are mentioned in the article:

Light-mediated coupling of acylsilanes with indoles is reported. This photo click reaction occurs under mild conditions (415 nm) mostly in quant. yield and provides stable silylated N,O-acetals via light mediated siloxycarbene generation with subsequent indole-N-H insertion. We show that this very efficient and fully atom economic coupling process can be applied to conjugate complex systems, as documented by the clicking of carbohydrates with indole alkaloids. The method is also applicable to the conjugation of polymer chains. The linking acetal moiety can be readily cleaved and it is also shown that wavelength-selective coupling and cleavage with acyl silanes bearing a second photoactive moiety is possible. This is documented by a successful polymerization/depolymerization sequence and by a polymer folding/unfolding process. 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 typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 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.Application of 604-69-3

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

Optimization of preparation of lycopene nanostructured lipid carrier by genetic algorithm combined with response surface method was written by Ma, Yong-qiang;Tan, Zhen-hong;Li, Chen-chen;Xiu, Wei-ye;Jing, Hong-shu. And the article was included in Baozhuang Gongcheng in 2022.Computed Properties of C21H44O5 The following contents are mentioned in the article:

In order to improve the bioavailability and stability of fat soluble lycopene, lycopene nanostructured lipid carriers were prepared by melting high-speed shear method. Taking the entrapment efficiency and average particle size as the main evaluation indexes, the single factor test was carried out, and the preparation process was optimized by genetic algorithm combined with Box-Behnken response surface method. The theor. entrapment efficiencies optimized by genetic algorithm and Box-Behnken response surface method are 86.2082% and 86.1695%. By validation test, the actual entrapment efficiency and average particle size were (86.267±0.44)% and (121.8±5.20) nm. The results show that the optimization of lycopene nanostructured lipid carrier model by genetic algorithm combined with Box-Behnken response surface method is reliable. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Computed Properties of C21H44O5).

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

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

Bioactive Patchy Nanoparticles with Compartmentalized Cargoes for Simultaneous and Trackable Delivery was written by Wong, Chin Ken;Chen, Fan;Walther, Andreas;Stenzel, Martina H.. And the article was included in Angewandte Chemie, International Edition in 2019.Recommanded Product: 604-69-3 The following contents are mentioned in the article:

Recent years have seen an increased interest in the use of ABC triblock terpolymers to bottom-up assemble multicompartment patchy nanoparticles. Despite these exptl. and theor. efforts, the applications of polymer-based patchy nanoparticles remain rather limited. One of the major challenges that eclipses their potential is the lack of knowledge to selectively encapsulate cargoes within different compartments that are separated in the nanometer length scale. Here, strategies are reported to segregate two chem. distinct mols. in either the patches or core compartment of patchy nanoparticles that bear a (bioactive) sugar corona. The potential use of these bioactive patchy nanoparticles containing compartmentalized cargoes for simultaneous drug delivery with real-time release monitoring capabilities is further demonstrated. 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: 604-69-3Recommanded Product: 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. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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: 604-69-3

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

Decrease of inorganic blood sulfate following treatment with selected antirheumatic drugs: potential consequence for articular cartilage was written by De Vries, B. J.;Van der Kraan, P. M.;Van den Berg, W. B.. And the article was included in Agents and Actions in 1990.Reference of 5003-48-5 The following contents are mentioned in the article:

The elimination kinetics of inorganic blood sulfate in mice was followed for 4 h after a single, oral administration of an antirheumatic drug. Sodium salicylate, aspirin, diflunisal, and benorylate, all in a dose of 1.25 mmol/kg, reduced the sulfate level to less than half that of control. This phenomenon was also demonstrated by phenylbutazone, oxyphenbutazone (both 1 mmol/kg), chloroquine diphosphate (0.6 mmol/kg), and tiaprofenic acid (0.02-0.35 mmol/kg). Niflumic acid (1.08 mmol/kg), piroxicam (0.03 mmol/kg), indomethacin (6.10^-3 mmol/kg), diclofenac (5.10^-3 mmol/kg), ketoprofen (0.2 mmol/kg), naproxen (0.08 mmol/kg), and ibuprofen (0.24 mmol/kg) possessed no sulfate-lowering properties. The potential relevance of the use of sulfate-lowering drugs for articular cartilage integrity is discussed. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5Reference of 5003-48-5).

4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Reference of 5003-48-5

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