Category: esters-buliding-blocks

Sk, Ramiz Islam published the artcileLipidomic analysis of cancer cell and tumor tissues, HPLC of Formula: 111-11-5, the main research area is lipidomic analysis cancer cell tumor tissue; Cancer; Fatty acid methyl ester; GC-MS; Lipidomics; RP-UPLC-ESIMS.

Due to their role in cellular structure, energetics, and signaling, characterization of changes in cellular and extracellular lipid composition is of key importance to understand cancer biol. In addition, several mass spectrometry-based profiling as well as imaging studies have indicated that lipid mols. may be useful to augment existing biochem. and histopathol. methods for diagnosis, staging, and prognosis of cancer. Therefore, anal. of lipidomic changes associated with cancer cells and tumor tissues can be useful for both fundamental and translational studies. Here, we provide a high-throughput single-extraction based method that can be used for simultaneous lipidomic and metabolomic anal. of cancer cells or healthy or tumor tissue samples. In this chapter, a modified Bligh-Dyer method is described for extraction of lipids followed by anal. of fatty acid composition by gas chromatog.-mass spectrometry (GC-MS) or untargeted lipidomics using electrospray ionization mass spectrometry (ESIMS) coupled with reversephase (RP) ultraperformance liquid chromatog. (UPLC) followed by multivariate data anal. to identify features of interest.

Methods in Molecular Biology (New York, NY, United States) published new progress about Animal tissue. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, HPLC of Formula: 111-11-5.

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

Laudisi, Federica published the artcileRepositioning of anthelmintic drugs for the treatment of cancers of the digestive system, SDS of cas: 55981-09-4, the main research area is review repositioning anthelmintic drug cancer digestive system; STAT3; Wnt/β-catenin; benzimidazole; chemotherapy; colorectal cancer; drug repurposing; hepatocellular carcinoma; niclosamide; rafoxanide; salicylanilide.

Tumors of the digestive system, when combined together, account for more new cases and deaths per yr than tumors arising in any other system of the body and their incidence continues to increase. Despite major efforts aimed at discovering and validating novel and effective drugs against these malignancies, the process of developing such drugs remains lengthy and costly, with high attrition rates. Drug repositioning (also known as drug repurposing), i.e., the process of finding new uses for approved drugs, has been gaining popularity in oncol. drug development as it provides the opportunity to expedite promising anti-cancer agents into clin. trials. Among the drugs considered for repurposing in oncol., compounds belonging to some classes of anthelmintics-a group of agents acting against infections caused by parasitic worms (helminths) that colonize the mammalian intestine-have shown pronounced anti-tumor activities and attracted particular attention due to their ability to target key oncogenic signal transduction pathways. In this review, we summarize and discuss the available exptl. and clin. evidence about the use of anthelmintic drugs for the treatment of cancers of the digestive system.

International Journal of Molecular Sciences published new progress about Anthelmintics. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, SDS of cas: 55981-09-4.

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

Clarke, Naomi E. published the artcileEfficacy of anthelminthic drugs and drug combinations against soil-transmitted helminths: a systematic review and network meta-analysis, Product Details of C12H9N3O5S, the main research area is meta analysis soil transmitted helminth anthelminthic drug.

Meta-anal. of periodic mass distribution of benzimidazole anthelminthic drugs is the key strategy to control soil-transmitted helminths (STHs) globally. However, benzimidazoles have low efficacy against Trichuris trichiura, and there are concerns about benzimidazole resistance potentially emerging in humans. Therefore, identifying alternative drug regimens is a pressing priority. We present a systematic review and network meta-anal. comparing the efficacy of 21 different anthelminthic drug regimens, including standard, novel, and combination treatments. We searched PubMed, Medline, Embase, Web of Science, and Cochrane databases and identified studies comparing anthelminthic treatments to each other or placebo. The outcomes calculated were relative risk (RR) of cure and difference in egg reduction rates (dERR). We used an automated generalized pairwise modeling framework to generate mixed treatment effects against a common comparator, the current standard treatment (single-dose albendazole). Our search identified 4876 studies, of which 114 were included in the meta-anal. Results identified several drug combinations with higher efficacy than single-dose albendazole for T. trichiura, including albendazole-ivermectin (RR of cure, 3.22 [95% confidence interval {CI}, 1.84-5.63]; dERR, 0.97 [95% CI,.21-1.74]), albendazole-oxantel pamoate (RR, 5.07 [95% CI, 1.65-15.59]; dERR, 0.51 [95% CI,.50-.52]), mebendazole-ivermectin (RR, 3.37 [95% CI, 2.20-5.16]), and tribendimidine-oxantel pamoate (RR, 4.06 [95% CI, 1.30-12.64]). There are several promising drug combinations that may enhance the impact of STH control programs on T. trichiura, without compromising efficacy against Ascaris lumbricoides and hookworm. We suggest further, large-scale trials of these drug combinations and consideration of their use in STH control programs where T. trichiura is present.

Clinical Infectious Diseases published new progress about Anthelmintics. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Product Details of C12H9N3O5S.

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

Pinto, Erika Gracielle published the artcileTargeting intracellular Leishmania (L.) infantum with nitazoxanide entrapped into phosphatidylserine-nanoliposomes: An experimental study, Formula: C12H9N3O5S, the main research area is nitazoxanide nanolipossome delivery system phosphatidylserine leishmaniasis Leishmania; Leishmania; Liposomes; Macrophage interaction; Nitazoxanide; Therapy.

Leishmaniasis is a parasitic neglected tropical disease and result in a broad spectrum of clin. manifestations, ranging from a single ulceration to a progressive and fatal visceral disease. Comprising a limited and highly toxic therapeutic arsenal, new treatments are urgently needed. Targeting delivery of drugs has been a promising approach for visceral leishmaniasis (VL). Phosphatidylserine-liposomes have demonstrated superior efficacy in VL, targeting intracellular parasites in host cells through macrophage scavenger receptors. In this work, we investigated the in vitro and in vivo efficacy of the antihelminthic drug nitazoxanide in a nanoliposomal formulation against Leishmania (L.) infantum. Physicochem. parameters of liposomes containing nitazoxanide (NTZ-LP) were determined by dynamic light scattering and small angle X-ray scattering. The efficacy of the formulation was verified in an intracellular amastigote model and in an exptl. hamster model. Our findings showed that NTZ-LP was able to eliminate the amastigotes inside the host cell with an IC50 value of 16μM. NTZ-LP was labeled a fluorescent probe and by spectrofluorimetry, we observed that the infected macrophages internalized similar levels of the drug to the uninfected cells. The confocal microscopy images confirmed the uptake and demonstrated a diffuse distribution of the NTZ-LP in the cytoplasm of Leishmania-infected macrophages, with the vesicles in a closer proximity to the parasites. For the in vivo efficacy, the liposomal NTZ-LP was administrated i.p. to Leishmania-infected hamsters for 10 consecutive days at 2 mg/kg/day. By qPCR we demonstrated a reduction of the parasite burden by 82% and 50% in the liver (p < 0.05) and spleen (p < 0.05), resp. NTZ (non-liposomal) was administered at 100 mg/kg/day per oral (p.o.) for the same period, but demonstrated no efficacy. This liposomal formulation ensured a targeting delivery of NTZ to the intracellular parasites, resulting in an good efficacy at a low dose in animals, and it may represent a new candidate therapy for VL. Chemico-Biological Interactions published new progress about Anthelmintics. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Formula: C12H9N3O5S.

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

Srikala, S. Vinaya published the artcileFormulation, characterization and antihelminthic activity testing of nitazoxanide superporous hydrogel tablets, Application of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, the main research area is antihelminthic activity nitazoxanide superporous hydrogel tablets.

In the pharmaceutical field controlled release products have the ability to maintain desired medicament concentration or a longer period of time. Certain drugs are relatively insoluble in water and have high dose requirements that render unsuitable formulation difficulties in sustained release formulations. Nitazoxanide which is a high dose water insoluble antiprotozoal drug was formulated with the aim. To modulate gastro-retentive dosage form based on the superporous hydrogel composites. Foaming technique was used in the preparation of SPH composites. The superporous hydrogels were extremely sensitive to pH of swelling media and good porosity. Superporous hydrogels tablets of nitazoxanide showed good pre-compressional and post-compressional properties. Formulation X is the best formulation containing chitosan, polyvinyl alc., formaldehyde, exhibited good swelling ratio. The compatibility studies were performed by Fourier Transform IR (FT-IR) Spectroscopic Studies, Differential Scanning Calorimetry Studies (DSC). All formulations were evaluated for stability, drug content, and kinetic drug release & in-vitro drug release profile. It was concluded that the proposed gastro-retention drug delivery provides a different supply of nitazoxanide directly to the stomach.

Journal of Drug Delivery and Therapeutics published new progress about Anthelmintics. 55981-09-4 belongs to class esters-buliding-blocks, name is 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate, and the molecular formula is C12H9N3O5S, Application of 2-((5-Nitrothiazol-2-yl)carbamoyl)phenyl acetate.

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

Zimmermann, Lisa published the artcileBenchmarking the in Vitro Toxicity and Chemical Composition of Plastic Consumer Products, SDS of cas: 111-11-5, the main research area is toxicity chem composition plastic consumer product.

Plastics are known sources of chem. exposure and few, prominent plastic-associated chems., such as bisphenol A and phthalates, have been thoroughly studied. However, a comprehensive characterization of the complex chem. mixtures present in plastics is missing. In this study, we benchmark plastic consumer products, covering eight major polymer types, according to their toxicol. and chem. signatures using in vitro bioassays and non-target high resolution mass spectrometry. Most (74 %) of the 34 plastic extracts contained chems. triggering at least one endpoint, including baseline toxicity (62 %), oxidative stress (41 %), cytotoxicity (32 %), estrogenicity (12 %) and antiandrogenicity (27 %). In total, we detected 1411 features, tentatively identified 213, including monomers, additives and non-intentionally added substances, and prioritized 25 chems. Extracts of polyvinyl chloride (PVC) and polyurethane (PUR) induced the highest toxicity whereas polyethylene terephthalate (PET) and high-d. polyethylene (HDPE) caused no or low toxicity. High baseline toxicity was detected in all “”bioplastics”” made of polylactic acid (PLA). The toxicities of low-d. polyethylene (LDPE), polystyrene (PS) and polypropylene (PP) varied. Our study demonstrates that consumer plastics contain compounds that are toxic in vitro but remain largely unidentified. Since the risk of unknown compounds cannot be assessed, this poses a challenge to manufacturers, public health authorities and researchers alike. However, we also demonstrate that products not inducing toxicity are already on the market.

Environmental Science & Technology published new progress about Antiandrogens. 111-11-5 belongs to class esters-buliding-blocks, name is Methyl octanoate, and the molecular formula is C9H18O2, SDS of cas: 111-11-5.

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

Picone, Marco published the artcileFragrance materials (FMs) affect the larval development of the copepod Acartia tonsa: An emerging issue for marine ecosystems, SDS of cas: 6259-76-3, the main research area is Acartia tonsa marine ecosystem fragrance material; Acartia tonsa; Copepods; Fragrance materials (FMs); Larval development.

Fragrance materials (FMs) are used in a variety of detergents and cosmetics, including household and personal care products. Despite their widespread use and the growing evidence of their occurrence in surface waters worldwide, very little is known about their toxicity towards marine species, including a key component of the marine food webs such as copepods. Thus, we investigated the toxicity of six of the more long-lasting and stable com. fragrances, including Amyl Salicylate (AMY), Oranger Crystals (ORA), Hexyl Salicylate (HEX), Ambrofix (AMB), Peonile (PEO), and Benzyl Salicylate (BZS), to assess their ability to impair the larval development of the calanoid copepod Acartia tonsa. FMs inhibited the development of A. tonsa significantly at concentrations by far lower than the effect-concentrations reported in the literature for aquatic species. The more toxic FMs were HEX (EC50 = 57 ng L-1), AMY (EC50 = 131 ng L-1) and ORA (EC50 = 766 ng L-1), while the other three compounds exerted toxic effects at concentrations higher than 1000 ng L-1 (LOEC at 1000 ng L-1-1 for PEO and BZS, and at 10,000 ng L-1 for AMB). Early life-stage mortality was unaffected by FMs at all the tested concentrations A comparison with water concentrations of FMs reported in the literature confirmed that FMs, especially HEX and AMY, may act as contaminants of potential concern in many aquatic habitats, including urban areas and remote and polar environments.

Ecotoxicology and Environmental Safety published new progress about Acartia tonsa. 6259-76-3 belongs to class esters-buliding-blocks, name is Hexyl 2-hydroxybenzoate, and the molecular formula is C13H18O3, SDS of cas: 6259-76-3.

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

Bakuru, Vasudeva Rao published the artcileExploring the Bronsted acidity of UiO-66 (Zr, Ce, Hf) metal-organic frameworks for efficient solketal synthesis from glycerol acetalization, Related Products of esters-buliding-blocks, the main research area is Bronsted acidity metal organic framework solketal catalyst glycerol acetalization; hafnium MOF catalyst levulinic acid acetalization; cerium MOF catalyst levulinic acid acetalization; zirconium MOF catalyst acetalization.

Zr, Ce, Hf-based isostructural UIO-66 MOFs exhibited varying degree of Bronsted acidity (UiO-66(Hf) > UiO-66(Ce) > UiO-66(Zr)) on their secondary building units owing to the differences in their oxophilicities. UIO-66(Hf) showed remarkable catalytic activity for solketal synthesis with a turnover frequency as high as 13 886 h-1, which is 90 times higher than that of UiO-66(Zr) and several orders of magnitude higher than that of H2SO4 or Zeolites.

Dalton Transactions published new progress about Acetalization. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Related Products of esters-buliding-blocks.

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

Saetiao, Phonsan published the artcileUsing reactive distillation for upgrading bio-oil from co-pyrolysis of palm kernel shell and palm empty fruit bunches, Recommanded Product: Ethyl 4-oxopentanoate, the main research area is biooil copyrolysis palm kernel shell fruit reactive distillation.

Due to the poor phys. properties of raw bio-oil from pyrolysis, in this work reactive distillation was used to upgrade vaporized bio-oil from selected co-pyrolysis of palm kernel shell and palm empty fruit bunches at 75%/25% mixing ratio by using 10%Ni/HZSM-5 catalyst and ethanol at various reboiler temperatures In the pyrolysis process, the feed temperature (biooil vapor and non-condensable gas) was in the range between 35 and 230°C. The reboiler temperature not only influenced the separation of heavy oil from raw bio-oil, which would help minimize catalyst deactivation, but also possibly affected contact time of reactants with catalyst via the residence time. The vaporized bio-oil was upgraded by esterification and acetalization reactions producing levulinic acid Et ester, nonanoic acid Et ester, and 1,1-diethoxyethane. The phys. characteristics d., kinematic viscosity, water content, and pH were improved from those of the raw bio-oil.

Songklanakarin Journal of Science and Technology published new progress about Acetalization. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Recommanded Product: Ethyl 4-oxopentanoate.

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

Ravi, Krishnan published the artcileHighly active and scalable SO3H functionalized carbon catalyst synthesized from bagasse for transformation of bio-based platform chemicals into fuel precursors and its in-depth characterization studies, Application In Synthesis of 539-88-8, the main research area is sulfonic acid bagasse bio based platform chem fuel acetalization.

Scalable synthesis of SO3H functionalized carbon from sugar industry waste (bagasse) and detailed structural characterization and activity were reported. The incorporation of SO3H functionality groups on the carbon surface and the growth of the aromatic carbon framework was supported by FT-IR and 13C CP-MAS NMR anal. The hydrothermally synthesized carbon exhibited total acidity of 5 mmol/g and uniform distribution of sulfur on the surface of carbon. The synthesized catalyst was found to be efficient for the acetalization, alkylation and alcoholysis reactions and exhibits excellent stability during the reactions. Various bio-derived carbonyl compounds were demonstrated by the solvent-free acetalization of bio-derived glycerol gives 50-100% conversion and 52-98% selectivity towards solketal derivatives at room temperature The synthesized catalyst′s reactivity was better than the com. used Bronsted/Lewis acids. Furthermore, the SO3H functionalized carbon was also used for alcoholysis followed by ring-opening of furfuryl alc., giving 67-98% selectivity towards alkyl levulinates with complete conversion of furfuryl alc. The mechanistic pathway suggests that the alcoholysis reaction goes through three different intermediates (2-alkoxymethylfuran, 4,5,5-trialkoxypentan-2-one, and 5-hydroxy-4,5-dialkoxypentan-2-one) to produce the alkyl levulinates. Addnl., the catalyst was tested for solvent-free condensation of 2-methylfuran with various carbonyl compounds to selectively produce an excellent yield of fuel precursors (for C12-C15 hydrocarbons) at 60 °C. The catalyst was reused up to four cycles with 14% loss in the conversion of furfural for acetalization of glycerol, and negligible losses in the alkylation of 2-methylfuran were observed

Fuel published new progress about Acetalization. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, Application In Synthesis of 539-88-8.

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