Tag: 300-400

Catastrophic phase inversion of bigels characterized by fluorescence intensity-based 3D modeling and the formability for decorating and 3D printing was written by Jiang, Qinbo;Wang, Yuxin;Du, Liyang;Li, Shaoyang;Liu, Yuanfa;Meng, Zong. And the article was included in Food Hydrocolloids in 2022.COA of Formula: C21H44O5 The following contents are mentioned in the article:

In this paper, gelatin hydrogels and glycerol monostearate (GMS)-enhanced Et cellulose (EC) oleogels were used as two phases for preparing bigels. The proportion of components in bigels was changed to explore the catastrophic phase inversion of bigels, which was analyzed by textural, rheol., laser confocal imaging, 3D stack modeling of techniques, and the measurement of the hydrophile-lipophile balance (HLB). As the oleogel fraction was less than 40 wt%, the bigel presented as the O/W type, and oil droplets were evenly distributed and stabilized by the gelatin, having the size smaller than 15μm. When the oleogel fraction was 42 wt%, bigels exhibited the semibicontinuous state due to the critical HLB of 8.23 that water and oil phases both had continuous and dispersed phases concurrently. The 3D model of bigels calculated a sharp increase of droplet sizes to 35μm in the transition state. The water phase in bigels became the dispersed phase when the oleogel fraction was more than 44 wt%, and GMS was mainly responsible for emulsifying and stabilizing water droplets, and the size of water droplets decreased from 35μm. Applications of bigels in decorating and 3D printing were discussed combined with phys. properties of different types of bigels. O/W bigels containing 40 wt% oleogels could inherit the hardness and formability from gelatin hydrogels and have ideal rheol. properties for decorating. W/O bigels with 60 wt% oleogels were more suitable to be used as printing ink for 3D printing, resulting from the strong thixotropy of EC oleogels. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1COA of Formula: C21H44O5).

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

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

Nitrogen content reduction on scenedesmus obliquus biomass used to produce biocrude by hydrothermal liquefaction was written by Miranda, Alejandra M.;Ocampo, David;Vargas, Gabriel J.;Rios, Luis A.;Saez, Alex A.. And the article was included in Fuel in 2021.Quality Control of Methyl nonadecanoate The following contents are mentioned in the article:

The use of Microalgae biomass for biofuel production by hydrothermal liquefaction (HTL) has been proposed as an alternative to traditional fossil fuels. When comparing fossil fuels, Microalgae biocrude has a high nitrogen content, which is one of the challenges that affect this technol. This factor causes operational issues because it lowers the carbon fraction in the chem. composition, which reduces the calorific value and, as a result, raises NOx emissions during combustion. In this work, conditions were established for obtaining Microalgae biomass to allow the production of biocrude with low nitrogen content by HTL. The effect of the variation in nitrogen levels on the culture medium, on cell growth and nitrogen content, was evaluated in the final biomass for the Scenedesmus obliquus strain; at a laboratory scale, the best results (around 0.25 g/L NaNO3) were used at a bench scale with 20 L tubular photobioreactors (PBRs). The remaining biomass was processed through HTL then the resulting biocrude was characterized. The results show that as the nitrogen source in the culture medium increases, the percentage of nitrogen in the remaining biomass and the biocrude produced also increases. It was possible to establish a concentration of nitrogen source in the culture medium that promotes the accumulation of lipids, decreases the protein content in the final biomass and consequently, in the biocrude, without affecting production and yield, a critical factor to take into consideration when assessing the viability of the proposed process. 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 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. 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

Environmental friendly synthesis of TiO₂-ZnO nanocomposite catalyst and silver nanomaterilas for the enhanced production of biodiesel from Ulva lactuca seaweed and potential antimicrobial properties against the microbial pathogens was written by Gurusamy, Sivaprakash;Kulanthaisamy, Mohan Rasu;Hari, Dinesh Gujuluva;Veleeswaran, Ananthi;Thulasinathan, Boobalan;Muthuramalingam, Jothi Basu;Balasubramani, Ravindran;Chang, Soon Woong;Arasu, Mariadhas Valan;Al-Dhabi, Naif Abdullah;Selvaraj, Arokiyaraj;Alagarsamy, Arun. And the article was included in Journal of Photochemistry and Photobiology, B: Biology in 2019.Electric Literature of C20H40O2 The following contents are mentioned in the article:

TiO₂-ZnO heterogeneous catalytic system provides a good replacement of a homogeneous catalytic reaction due to its easier recovery. In this study, biodiesel was produced from Ulva lactuca seaweeds using TiO₂-ZnO nanocomposite catalysts with particle size of ∼12 nm. The size controlled TiO₂-ZnO nanocomposite was characterized by powder XRD anal. and TEM. The result of that TiO₂-ZnO catalyst is a promising catalyst for the production of biodiesel under mild reaction conditions and high yield of hydroxydecanoic acid conversion of 82.8%. The various conditions optimized for the higher conversion to FAME (15.8 mL of FAME) were 4 wt% catalysts at 4 h under 60°C and further there is no increase of conversion to FAME above 60°C-80°C. The total product yield was calculated as 82.8% of conversion to FAME. The evaluated biodiesel was found to be up to the mark of ASTM standards The silver nanoparticles (AgNPs) were synthesized by using leftover biomass of algae obtaining after lipid extraction of U.lactuca. AgNPs particle size was achieved as ∼12 nm and was confirmed by UV-Visible spectroscopy, XRD and TEM anal. Antibacterial activities of the synthesized AgNPs were analyzed and compared. The antibacterial activity was excellent against bacterial pathogens and treatment against P. vulgaris shows the maximum zone of inhibition (13.8 mm). The present work identified that the unutilized bioresource such as U.lactuca can be effectively utilized for biodiesel production so as to replace fossil fuel usage. 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. 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. Electric Literature of C20H40O2

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

Drug interactions and risk of acute bleeding leading to hospitalization or death in patients with chronic atrial fibrillation treated with warfarin was written by Gasse, Christiane;Hollowell, Jennifer;Meier, Christoph R.;Haefeli, Walter E.. And the article was included in Thrombosis and Haemostasis in 2005.Related Products of 5003-48-5 The following contents are mentioned in the article:

Although drug interactions with warfarin are an important cause of excessive anticoagulation, their impact on the risk of serious bleeding is unknown. We therefore performed a cohort study and a nested case-control anal. to determine the risk of serious bleeding in 4152 patients (aged 40 – 84 years) with nonvalvular atrial fibrillation (AF) taking long-term warfarin (> 3 mo). The study population was drawn from the UK General Practice Research Database. More than half (58%) of eligible patients used potentially interacting drugs during continuous warfarin treatment. Among 45 identified cases of incident idiopathic bleeds (resulting in hospitalization within 30 days or death within 7 days) and 143 matched controls, more cases than controls took ≥ 1 potentially interacting drug within the preceding 30 days (62.2% vs. 35.7%) and used > 4 drugs (polypharmacy) within the preceding 90 days (80.0% vs. 66.4%). Conditional logistic regression anal. yielded an odds ratio (OR) of 3.4 (95% confidence interval [CI]: 1.4 – 8.5) for the risk of serious bleeding in patients treated with warfarin and ≥ 1 drugs potentially increasing the effect of warfarin vs. warfarin alone adjusted for polypharmacy, diabetes, hypertension, heart failure, and thyroid disease; the adjusted OR for the combined use of warfarin and aspirin vs. warfarin alone was 4.5 (95% CI: 1.1 – 18.1). We conclude that concurrent use of potentially interacting drugs with warfarin is associated with a 3 to 4.5-fold increased risk of serious bleeding in long-term warfarin users. 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. 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.Related Products of 5003-48-5

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

In vitro evaluation of methotrexate loaded with solid lipid nanoparticles for breast cancer was written by Vaishnav, Vaibhav;Mahalwar, Anand;Sahu, Ashwanee Kumar;Rajput, Yugal Kishor;Sahu, Rajendra Kumar;Sahu, Omprakash. And the article was included in World Journal of Pharmaceutical Research in 2022.Application In Synthesis of Glyceryl monostearate The following contents are mentioned in the article:

Breast cancer is cancer that develops from breast tissue lump include in breast cancer, change in breast shap and skin is dimpling, it is the most common type breast cancer is ductal carcinoma. The present study is designed to methotrexate loaded with solid lipid nanoparticles (slns) to target Breast cancer. The developed nano-carriers where characterized with respect to particle size, PDI, zeta potential, drug loading and entrapment, in vitro releas etc. The characterized formulation were used to comparatively assess cellular uptake, cellviability, apoptosis, lysomal membrane permeability, bioavailability, biodidtsribution, changes in tumer volume in anumal survival. The results ex-vivo showed greater cellular uptake and better cytotoxicity at lower IC50 of methotrexate in breast cancer cells. Further, we observed increased programmed cell death (apoptosis) with altered lysosomal membrane permeability and better rate of degradation of lysosomal membrane in-vitro. On the other hand, in-vivo evaluation showed maximum bioavailability and tumor targeting efficiency with min. secondary drug distribution in various organs with formulated and anchored nano-carrier when compared with free drug. Moreover, sizeable reduction in tumor burden was estimated with fucose decorated SLNs as compared to that seen with free MTX and SLNs-MTX. Fucose decorated SLNs showed promising results to develop therapeutic interventions for breast cancer, and paved a way to explore this promising and novel nano-carrier which enables to address breast cancer. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Application In Synthesis of Glyceryl monostearate).

Glyceryl monostearate (cas: 31566-31-1) 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. 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.Application In Synthesis of Glyceryl monostearate

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

Antimicrobial Formulation of Chrysopogon zizanioides Essential Oil in an Emulsified Lotion for Acne was written by Kurrimboccus, Fadilah;Orchard, Ane;Danckwerts, Michael Paul;van Vuuren, Sandy. And the article was included in Planta Medica in 2022.SDS of cas: 31566-31-1 The following contents are mentioned in the article:

Acne is a skin condition arising from excess sebum production and microbial overgrowth within the pilosebaceous unit. Several com. essential oils have shown promising activity against acne-related pathogens. Due to their volatility and thermal instability, the formulation of essential oils into com. products remains a pharmaceutical challenge. Thus, this study aimed to develop a viable anti-acne topical treatment as an oil-in-water emulsified lotion to overcome these challenges. Chrysopogon zizanioides(vetiver) displayed noteworthy antimicrobial activity with a mean min. inhibitory concentration of 0.14 mg/mL against Cutibacterium acnes, Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus pyogenes. Emulsified lotions containing C. zizanioideswere developed through the hydrophilic-lipophilic balance approach. At tested hydrophilic-lipophilic balance values of 8, 9, and 10, C. zizanioidesemulsified lotions displayed maximum stability at hydrophilic-lipophilic balance 9 with a min. change in mean droplet size and polydispersity index of 20.61 and 33.33%, resp., over 84 days. The C. zizanioidesemulsified lotion at optimum hydrophilic-lipophilic balance 9 completely inhibited the growth of C. acnesand killed S. aureus, S. epidermidis, and S. pyogeneswithin 24 h. Addnl., the lotion retained antimicrobial activity against these test micro-organisms over the 84-day stability test period. Thus, the C. zizanioidesemulsified lotion demonstrated phys. stability and antimicrobial efficiency, making it an ideal natural product anti-acne treatment. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1SDS of cas: 31566-31-1).

Glyceryl monostearate (cas: 31566-31-1) 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.SDS of cas: 31566-31-1

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

Wettability and availability of drugs was written by Lagas, M.. And the article was included in Pharmaceutisch Weekblad in 1982.HPLC of Formula: 5003-48-5 The following contents are mentioned in the article:

Water did not penetrate pellets prepared from powd. phenytoin  [57-41-0] or hexobarbital (I) [56-29-1], whereas aqueous solutions of the surfactant, polysorbate 80  [9005-65-6], penetrated at a rate which depended on the polysorbate concentration (0.1-1.0%). If the drugs were rendered hydrophilic by prior mixing of the powder with a 3% Me cellulose  [9004-67-5] solution and drying before compression, penetration of water, surfactant solutions, or gastric juice was practically instantaneous. The disintegration time of hard gelatin capsules containing I was 2 h in water, 15 min in 1% polysorbate 80, and 3 min (corresponding to the gelatin dissolution time) for hydrophilic I independent of the polysorbate concentration Similarly, the dissolution rate of the I capsules was increased by polysorbate and was greatest for hydrophilic I. In human subjects, 100% disintegration of capsules of hydrophilic benorilate  [5003-48-5] occurred in the stomach within 60 min, as detected by release of a ^99mTc label; disintegration of nonhydrophilic benorilate capsules was very slow. Absorption of I, phenytoin, and benorilate in humans was more rapid and resulted in higher plasma concentrations when the drugs were administered in capsules in the hydrophilic than in the nonhydrophilic forms. This study involved multiple reactions and reactants, such as 4-Acetamidophenyl 2-acetoxybenzoate (cas: 5003-48-5HPLC of Formula: 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. 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.HPLC of Formula: 5003-48-5

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

Toxicometabolomics of lindane in adult zebrafish (Danio rerio) using GC-MS/MS and LC-Orbitrap-MS/MS was written by Yuan, Xiu;Lee, Junghak;Park, Eunyoung;Lee, Hwa-Kyung;Kim, Jeong-Han. And the article was included in Applied Biological Chemistry in 2021.Related Products of 31566-31-1 The following contents are mentioned in the article:

Lindane is a broad-spectrum persistent organochlorine pesticide that has been used to control pests for many years. In this study, its toxic mechanisms in adult zebrafish were investigated using targeted metabolomics with GC-MS/MS and non-targeted metabolomics with LC-Orbitrap-MS/MS. Zebrafish was exposed to lindane in water for 48 h in three groups: control, low exposure (1/10 LC₅₀) and high exposure (LC₅₀). In the zebrafish exposed to low concentration of lindane, 2.24-3.98 mg/kg of lindane were determined, while 35.67-56.46 mg/kg were observed in the zebrafish exposed to high concentration A total of 118 metabolites were identified from 394 metabolites on GC-MS/MS and 45 metabolites were selected as biomarkers. A total of 62 metabolites were identified on LC-Orbitrap-MS/MS and 7 metabolites were selected as biomarkers. Three groups were well separated on partial least squares-discriminant anal. (PLS-DA), and a total of 52 metabolites in both the targeted and non-targeted metabolites were selected as biomarkers through VIP and ANOVA tests to construct a heatmap. Five metabolic pathways such as the pentose phosphate pathway (PPP), histidine metabolism, phenylalanine metabolism, alanine/aspartate/glutamate metabolism, and phenylalanine/tyrosine/tryptophan biosynthesis, were observed to show toxicol. signifcant alterations. Oxidative stress was also confirmed through MDA and ROS assays. Such perturbations of the metabolic pathways of zebrafish caused by the exposure to lindane resulted in significant toxicol. effects. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1Related Products of 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. 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.Related Products of 31566-31-1

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

Analysis of Metabolomic Changes in Xylem and Phloem Sap of Cucumber under Phosphorus Stresses was written by Sun, Jingjing;Li, Qinglin;Xu, Hui;Zhang, Wentao. And the article was included in Metabolites in 2022.HPLC of Formula: 31566-31-1 The following contents are mentioned in the article:

Cucumber xylem and phloem sap is a key link in nutrient distribution, transportation and signal transduction of cucumber plants; however, the metabolic response mechanism of cucumber xylem and phloem sap under phosphorus stress has not been clearly revealed. In this study, gas chromatog.-mass spectrometry (GC-MS) combined with principal component anal. (PCA) and partial least squares discriminant anal. (PLS-DA) were used to analyze the metabolites in cucumber xylem and phloem sap under different phosphorus stress. A total of 22 differential metabolites were screened from xylem and phloem sap, resp. Through the anal. of metabolic pathways of differential metabolites, four and three key metabolic pathways were screened, resp. The results showed that compared with the normal phosphorus level, the content of most amino acids in the key metabolic pathway increased in xylem but decreased in phloem both under low and high phosphorus stress levels. The contents of sucrose and glucose in phloem glycolysis pathway showed a pos. correlation with the change of phosphorus nutrient levels. The tricarboxylic acid cycle was promoted in xylem and phloem of cucumber under low and high phosphorus nutrient levels, and the contents of malic acid and citric acid increased significantly. This study provided abundant biochem. information for the metabolic response and regulation strategies of cucumber xylem and phloem under phosphorus stress, and is committed to looking for more sensitive markers to evaluate the supply level of phosphorus nutrients in cucumber. This study involved multiple reactions and reactants, such as Glyceryl monostearate (cas: 31566-31-1HPLC of Formula: 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. 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.HPLC of Formula: 31566-31-1

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

Synthesis and preliminary evaluation of a ^99mTc labelled deoxyglucose complex {[^99mTc]DTPA-bis(DG)} as a potential SPECT based probe for tumor imaging was written by Singh, Shivani;Singh, Sweta;Sharma, Rakesh K.;Kaul, Ankur;Mathur, Rashi;Tomar, Sarika;Varshney, Raunak;Mishra, Anil K.. And the article was included in New Journal of Chemistry in 2020.Safety of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate The following contents are mentioned in the article:

Carbohydrate based radiotracers have been in routine use as a potential PET imaging agent for tumor targeting, worldwide. The aim of our study was to develop a cost effective and more accessible SPECT based tumor targeted mol. imaging probe. A 1-D-deoxyglucose conjugate was proposed and evaluated as a tumor imaging agent. DTPA-bis(DG) was synthesized by conjugating two mols. of glucose employing a click chem. approach. It involved a facile methodol., characterization and subsequent radiolabelling with ^99mTc with high radiochem. purity and specific activity (187 ± 17 MBq μmol^-1) followed by in vitro and in vivo evaluation to prove its potency as an imaging agent. In vitro cytotoxicity studies in the A549 and HEK cell lines showed no substantial toxicity. A cell uptake study revealed that the transportation of [^99mTc]DTPA-bis(DG) was GLUT1 independent. In vivo blood kinetic studies in New Zealand rabbits showed fast clearance with a T_d1/2 of 28.12 ± 0.63 min and T_e1/2 = 101.25 ± 0.34. A significant tumor uptake of 3.88 ± 0.05% ID per g was observed in A549 tumor bearing mice at 4 h p.i. The tumor-to-muscle and tumor-to-blood ratios at 4 h p.i. were 20.46 ± 0.07 and 3.59 ± 0.03 resp. No significant persistence in any other organs was observed The tumor (A549) grafted in athymic mice was clearly distinguishable in the gamma-scintigraphy image. The results suggested that this [^99mTc]glycoconjugate would be a promising candidate for cancer targeted imaging. 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: 604-69-3Safety of (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 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. 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.Safety of (2S,3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate

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