Month: November 2022

Woods, Hannah; Boddorff, Andrew; Ewaldz, Elena; Adams, Zachary; Ketcham, Mitchell; Jang, Dong June; Sinner, Elizabeth; Thadhani, Naresh; Brettmann, Blair published an article in 2020, the title of the article was Rheological Considerations for Binder Development in Direct Ink Writing of Energetic Materials.Synthetic Route of 2358-84-1 And the article contains the following content:

A review. Additive manufacturing is a promising approach to prepare highly specifically defined materials with unique dimensions, gradients in material attributes and on-demand properties. For energetic materials applications, it is particularly exciting for its potential to create lattice and cellular structures and gradient solids to focus or dissipate energy. However, there are significant challenges to overcome, particularly in obtaining the very high particle content (>80 vol % particles), while still being manufacturable. This work focuses on the polymer binder used in an energetic materials system and aims to understand how its characteristics affect the viscosity and printability of the suspension. Two different types of polymer binders are examined: (a) high mol. weight polymer in a solvent and (b) polymerizable smaller mols. that were cured via UV light. We show that the suspension viscosity is primarily controlled by the particle volume fraction for the UV curable binder, while both the particle volume fraction and polymer mol. weight influence the response in the case of the polymer/solvent binder. Both binder types can be tuned to provide printable suspensions that result in lines of consistent width and 3D disk-shaped objects, indicating that both paths are good potential directions for future formulations for polymer bonded explosives prepared via additive manufacturing The experimental process involved the reaction of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)(cas: 2358-84-1).Synthetic Route of 2358-84-1

The Article related to polymer binder suspension viscosity printability explosive formulation review, Propellants and Explosives: Reviews and other aspects.Synthetic Route of 2358-84-1

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

On November 20, 2019, Lee, Young-Sun; Lee, Sunggyu; Lim, Jae-Eun; Moon, Hyo-Bang published an article.Synthetic Route of 3319-31-1 The title of the article was Occurrence and emission of phthalates and non-phthalate plasticizers in sludge from wastewater treatment plants in Korea. And the article contained the following:

Phthalates are endocrine-disrupting chems. that cause adverse health effects in wildlife and humans. Due to domestic and global regulations of phthalates in com. products, non-phthalate plasticizers (NPPs) have been introduced into industrial markets. Few studies have been conducted on the occurrence of phthalates and NPPs in sludge from wastewater treatment plants (WWTPs). In this study, sludge samples were collected from 40 WWTPs in Korea to investigate the occurrence, compositional profiles, and emission flux of phthalates and NPPs. Total concentrations of phthalates and NPPs in sludge ranged from 4.7 to 1400 (mean: 110) μg/g dry weight and from 0.17 to 780 (mean: 28.0) μg/g dry weight, resp. Di(2-ethylhexyl)phthalate (DEHP) was a predominant compound, suggesting widespread consumption in Korea. Di(2-ethylhexyl)terephthalate (DEHT) was dominant in industrial sludge samples, whereas di-isononyl cyclohexane-1,2-dicarboxylate (DINCH) and trioctyl trimellitate (TOTM) were dominant in domestic sludge. This implies different consumption patterns of phthalate alternatives by industry and domestic activities. Concentrations of NPPs were significantly correlated with those of high-mol.-weight (HMW) phthalates, indicating that HMW phthalates were preferentially replaced by NPPs. The emission fluxes of phthalates via domestic WWTP activities were higher than those measured for industrial WWTPs, while the emission fluxes of NPPs via industrial WWTPs were higher than those found for domestic and industrial WWTPs. This indicates that phthalate emissions are associated with household activities, while NPP emissions are associated with industrial activities. The experimental process involved the reaction of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate(cas: 3319-31-1).Synthetic Route of 3319-31-1

The Article related to phthalate nonphthalate plasticizer occurrence emission sludge wwtp korea, dehp, deht, dinch, plasticizer, totm, wwtp, Waste Treatment and Disposal: Other and other aspects.Synthetic Route of 3319-31-1

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

On August 31, 2020, Yuan, Chuan; Jiang, Ding; Wang, Shuang; Barati, Bahram; Gong, Xun; Cao, Bin; Zhang, RuiPing; Zhang, Chuang; Odey, Emmanuel A. published an article.Quality Control of 3-Acetyldihydrofuran-2(3H)-one The title of the article was Study on catalytic pyrolysis mechanism of seaweed polysaccharide monomer. And the article contained the following:

In this study, L-rhamnose monohydrate (LRM) was used as a model compound of seaweed polysaccharide to study its pyrolysis and catalytic pyrolysis mechanism. Initially, the weight loss curve of LRM was obtained by thermogravimetric anal. The main weight loss temperature was found to be at 350-550°C. Then, the pyrolysis mechanism of LRM was analyzed and verified by macroscopic experiments and mol. simulations. Experiments showed that the bio-oil yield was highest when the temperature reached around 500°C, and the bio-oil contained large amount of furan substances. Finally, the effects of different proportions of catalysts (Mg-Ce/ZSM-5) on bio-oil products were studied, and the catalytic reaction mechanism was discussed. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Quality Control of 3-Acetyldihydrofuran-2(3H)-one

The Article related to seaweed rhamnose monohydrate catalytic pyrolysis density functional theory, Unit Operations and Processes: Other and other aspects.Quality Control of 3-Acetyldihydrofuran-2(3H)-one

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

Raj, Danuta published an article in 2022, the title of the article was Eutectic Thin-Layer Chromatography as a New Possibility for Quantification of Plant Extracts-A Case Study.Synthetic Route of 118-55-8 And the article contains the following content:

Deep eutectic solvents (DES), compared to classic ones, have interesting properties, such as the ability to solubilize compounds differing in polarity or increased dissolution of selected chem. compounds They also offer specific interactions between the mobile and stationary phases. Those features make them promising solvents in chromatog. techniques, including the use in the separation of complicated samples. The first quant. anal. with eutectic thin-layer chromatog. (TLC) is presented in the paper. As a case study, five alkaloids from Chelidonium maius were selected as target compounds A wide range of terpene-based DESs was investigated to develop the chromatog. system, both pure and after dilution Moreover, a novel approach was employed to adjust polarity, involving mixing DESs differing in chromatog. properties. This procedure has proved to be effective. The best results were obtained with a 2:1 (wt/wt) mixture of DESs: camphor + phenol and menthol + limonene, with a 20% addition of methanol. The chromatog. system was validated and checked on the real sample, which made it the first applicable and operational quant. eutectic TLC system. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).Synthetic Route of 118-55-8

The Article related to eutectic thin layer chromatog plant extract quantification, chelidonium, des, nades, alkaloids, densitometry, eutectic tlc, Biochemical Methods: Chromatographic and other aspects.Synthetic Route of 118-55-8

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

On November 30, 2017, Aittomaki, Saara; Valanne, Susanna; Lehtinen, Tapio; Matikainen, Sampsa; Nyman, Tuula A.; Ramet, Mika; Pesu, Marko published an article.Application In Synthesis of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate The title of the article was Proprotein convertase Furin1 expression in the Drosophila fat body is essential for a normal antimicrobial peptide response and bacterial host defense. And the article contained the following:

Invading pathogens provoke robust innate immune responses in Dipteran insects, such as Drosophila melanogaster. In a systemic bacterial infection, a humoral response is induced in the fat body. Gram-pos. bacteria trigger the Toll signaling pathway, whereas gram-neg. bacterial infections are signaled via the immune deficiency (IMD) pathway. We show here that the RNA interference-mediated silencing of Furin1-a member of the proprotein convertase enzyme family-specifically in the fat body, results in a reduction in the expression of antimicrobial peptides. This, in turn, compromises the survival of adult fruit flies in systemic infections that are caused by both gram-pos. and -neg. bacteria. Furin1 plays a nonredundant role in the regulation of immune responses, as silencing of Furin2, the other member of the enzyme family, had no effect on survival or the expression of antimicrobial peptides upon a systemic infection. Furin1 does not directly affect the Toll or IMD signaling pathways, but the reduced expression of Furin1 up-regulates stress response factors in the fat body. We also demonstrate that Furin1 is a neg. regulator of the Janus kinase/signal transducer and activator of transcription signaling pathway, which is implicated in stress responses in the fly. In summary, our data identify Furin1 as a novel regulator of humoral immunity and cellular stress responses in Drosophila. The experimental process involved the reaction of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate(cas: 3319-31-1).Application In Synthesis of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate

The Article related to drosophila systemic bacterial infection fat body furin1 antimicrobial peptide, imd pathway, jak/stat pathway, toll pathway, innate immunity, stress, Nonmammalian Biochemistry: Pathology and other aspects.Application In Synthesis of Tris(2-ethylhexyl) benzene-1,2,4-tricarboxylate

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

On December 31, 2020, Noushini, Saeedeh; Park, Soo Jean; Jamie, Ian; Jamie, Joanne; Taylor, Phillip published an article.Application of 123-25-1 The title of the article was Sampling technique biases in the analysis of fruit fly volatiles: a case study of Queensland fruit fly. And the article contained the following:

Diverse methods have been used to sample insect semiochems. Sampling methods can differ in efficiency and affinity and this can introduce significant biases when interpreting biol. patterns. We compare common methods used to sample tephritid fruit fly rectal gland volatiles (pheromones), focusing on Queensland fruit fly, Bactrocera tryoni. Solvents of different polarity, n-hexane, dichloromethane and ethanol, were compared using intact and crushed glands. Polydimethylsiloxane, polydimethylsiloxane/divinylbenzene and polyacrylate were compared as adsorbents for solid phase microextraction Tenax-GR and Porapak Q were compared as adsorbents for dynamic headspace sampling. Along with compounds previously reported for B. tryoni, we detected five previously unreported compounds in males, and three in females. Dichloromethane extracted more amides while there was no significant difference between the three solvents in extraction of spiroacetals except for (E,E)-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane for which n-hexane extracted higher amount than both dichloromethane and ethanol. Ethanol failed to contain many of the more volatile compounds Crushed rectal gland samples provided higher concentrations of extracted compounds than intact rectal gland samples, but no compounds were missed in intact samples. Of solid phase microextraction fibers, polyacrylate had low affinity for spiroacetals, Et isobutyrate and ethyl-2-methylbutanoate. Polydimethylsiloxane was more efficient for spiroacetals while type of fiber did not affect the amounts of amides and esters. In dynamic headspace sampling, Porapak was more efficient for Et isobutyrate and spiroacetals, while Tenax was more efficient for other esters and amides, and sampling time was a critical factor. Biases that can be introduced by sampling methods are important considerations when collecting and interpreting insect semiochem. profiles. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).Application of 123-25-1

The Article related to pheromone volatile compound headspace sampling bactrocera, Nonmammalian Biochemistry: Metabolism and other aspects.Application of 123-25-1

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

Castro-Vargas, Cynthia; Pandey, Gunjan; Yeap, Heng Lin; Lacey, Michael J.; Lee, Siu Fai; Park, Soo J.; Taylor, Phillip W.; Oakeshott, John G. published an article in 2022, the title of the article was Diversity and sex differences in rectal gland volatiles of Queensland fruit fly, Bactrocera tryoni (Diptera: Tephritidae).COA of Formula: C8H14O4 And the article contains the following content:

Rectal gland volatiles are key mediators of sexual interactions in tephritid fruit flies. We used solid-phase microextraction (SPME) plus gas chromatog.-mass spectrometry (GC-MS) and gas chromatog.-flame ionization detection (GC-FID) to substantially expand rectal gland chem. characterization of the Queensland fruit fly (Bactrocera tryoni (Diptera: Tephritidae); Qfly). The SPME GC-MS anal. identified 24 of the 30 compounds previously recorded from Qfly rectal glands, plus another 21 compounds that had not previously been reported. A few amides and fatty acid esters dominated the chromatograms of males and females resp., but we also found other esters, alcs. and aldehydes and a ketone. The GC-FID analyses also revealed over 150 others, as yet unidentified, volatiles, generally in lesser amounts The GC-FID analyses also showed 49 and 12 compounds were male- and female-specific, resp., both in single sex (virgin) and mixed sex (mostly mated) groups. Another ten compounds were male-specific among virgins but undetected in mixed sex groups, and 29 were undetected in virgins but male-specific in mixed sex groups. The corresponding figures for females were four and zero, resp. Most short retention time peaks (including a ketone and an ester) were male-specific, whereas most female-biased peaks (including five fatty acid esters) had long retention times. Our results indicate previously unsuspected diversity of rectal gland volatiles that might have pheromone functions in males, but far fewer in females. The experimental process involved the reaction of Diethyl succinate(cas: 123-25-1).COA of Formula: C8H14O4

The Article related to bactrocera tryoni diversity sex difference rectal gland volatility, Nonmammalian Biochemistry: Metabolism and other aspects.COA of Formula: C8H14O4

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

On June 14, 2012, Richards, David N.; Zemlyanov, Dmitry Y.; Ivanisevic, Albena published an article.Electric Literature of 79642-50-5 The title of the article was Kelvin Probe Force Microscopy Analysis of the Covalent Functionalization and DNA Modification of Gallium Phosphide Nanorods. And the article contained the following:

The growth, covalent functionalization, and subsequent DNA modification of Ga phosphide (GaP) nanorods is presented. Anal. of the nanorods by SEM, TEM, and XRD revealed important information regarding their phys. properties such as the presence of twinning defects. The nanorods were deposited onto glass substrates for further functionalization and biomol. immobilization. Plasma cleaning was employed to remove the surfactant present on the nanorods’ surfaces. Kelvin probe force microscopy (KPFM) was used to analyze the extent of plasma cleaning and how it affected the functionalization that employed thiol chem. KFPM anal. of the subsequent modification of functionalized nanorods with single-stranded DNA (ssDNA) revealed that immobilization was dependent on the amount of plasma cleaning to which the nanorods had been exposed. Nanorods were then exposed to the cDNA strand and KPFM was again used to detect successful hybridization. The experimental process involved the reaction of Bis(2,5-dioxopyrrolidin-1-yl) glutarate(cas: 79642-50-5).Electric Literature of 79642-50-5

The Article related to kelvin probe microscopy dna modification gallium phosphide nanorod, Surface Chemistry and Colloids: Other and other aspects.Electric Literature of 79642-50-5

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

On November 24, 1988, Sugiyama, Hidetoshi; Mori, Kogoro; Maeno, Shinichiro; Muramatsu, Norimichi published a patent.Synthetic Route of 119993-56-5 The title of the patent was Aminocyclopentanecarboxylic acid derivatives and agrochemical microbicides containing them. And the patent contained the following:

Agrochem. microbicides contain title compounds I (R = alkyl, alkenyl, alkynyl) or their salts as active ingredients. Treatment of MeOH with SOCl2 at -10° for 10 min, then with cis-I (R = H) HCl salt at room temperature for 30 min gave 88.2% cis-I (R = Me) HCl salt (II), which at 300 ppm totally controlled Phytophthora infestans with no damage to tomato, vs. poor effect, for cycloleucine. A wettable powder was prepared from II (R = H) HCl salt 25, Na lauryl sulfate 2, Na ligninsulfonate 3, white carbon 20, diatomaceous earth 20, and clay 30 parts. The experimental process involved the reaction of Ethyl 2-aminocyclopentanecarboxylate hydrochloride(cas: 119993-56-5).Synthetic Route of 119993-56-5

The Article related to aminocyclopentanecarboxylic acid derivative microbicide agrochem, cyclopentanecarboxylic acid derivative microbicide agrochem, Agrochemical Bioregulators: Microbial and other aspects.Synthetic Route of 119993-56-5

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

On February 12, 2020, Zhao, Huimin; Yang, Aiping; Zhang, Nan; Li, Shiyang; Yuan, Tianjie; Ding, Ning; Zhang, Siwang; Bao, Sheng; Wang, Chang; Zhang, Yinan; Wang, Xiachang; Hu, Lihong published an article.Formula: C5H10O3 The title of the article was Insecticidal Endostemonines A-J Produced by Endophytic Streptomyces from Stemona sessilifolia. And the article contained the following:

The discovery of new, safe, and effective pesticides is one of the main means for modern crop protection and parasitic disease control. During the search for new insecticidal secondary metabolites from endophytes in Stemona sessilifolia (a traditional Chinese medicine with a long history as an insecticide), 10 new insecticidal endostemonines A-J (1-10) were identified from an endophytic Streptomyces sp. BS-1. Their structures were determined by comprehensive spectroscopic anal. Endostemonines A-J represent the first reported naturally occurring pyrrole-2-carboxylic ester derivatives, which consisted of different fatty acid chains at the C-2 of pyrrole ring were produced by traditional Chinese medicine endophytic microbes. All new tested compounds exhibited strong lethal activity against Aphis gossypii (LC50 value range of 3.55-32.00 mg/L after 72 h). This research highlighted the discovery of pesticide natural products from insecticidal medicinal plant endophytes for the first time, paving a new pathway for the development of pest control. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Formula: C5H10O3

The Article related to endostemonine streptomyces endophyte stemona insecticide natural product, stemona sessilifolia, endophyte, endostemonine, insecticidal activity, secondary metabolite, Agrochemical Bioregulators: Microbial and other aspects.Formula: C5H10O3

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