Month: April 2022

Recommanded Product: 73590-85-9. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]thio]benzimidazole, is researched, Molecular C17H19N3O2S, CAS is 73590-85-9, about A blockbuster synthesis for undergraduates. Author is Parsons, Andrew F..

A context-based practical designed to give students the opportunity to improve their team working, communication and time-management skills was developed. By investigating the synthesis of the major antiulcer drug, esomeprazole, undergraduates are given an insight into the challenges of modern process chem., from optimization of the lead compound to its full-scale manufacture Students work as a team to prepare pyrmetazole from pyrmethyl alc. and then investigate the reaction conditions required to optimize the asym. oxidation of the sulfide group in pyrmetazole to form esomeprazole. Students do a series of small-scale oxidation reactions, using reagents and reaction conditions of their choice, to investigate how the conditions affect the efficiency of the oxidation They are required to plan their experiments to maximize the number of results they achieve over the eight-day period of the project and then provide a summary of their results and describe aspects of scaling-up their optimized reaction in individual reports, which are assessed. Their results are reviewed and compared with the current industrial process.

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Ether – Wikipedia,
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Application of 56621-48-8. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 4-(Piperazin-1-yl)phenol, is researched, Molecular C10H14N2O, CAS is 56621-48-8, about Discovery of a new potent inhibitor of mushroom tyrosinase (Agaricus bisporus) containing 4-(4-hydroxyphenyl)piperazin-1-yl moiety.

Tyrosinase (TYR, EC 1.14.18.1) plays a pivotal role in mammalian melanogenesis and enzymic browning of plant-derived food. Therefore, tyrosinase inhibitors (TYRIs) can be of interest in cosmetics and pharmaceutical industries as depigmentation compounds as well as anti-browning agents. Starting from 4-benzylpiperidine derivatives that showed good inhibitory properties toward tyrosinase from Agaricus bisporus (TyM), we synthesized a new series of TYRIs named 3-(4-benzyl-1-piperidyl)-1-(4-phenylpiperazin-1-yl)propan-1-one and 2-(4-benzyl-1-piperidyl)-1-(4-phenylpiperazin-1-yl)ethanone derivatives Among them, compound 4b proved to be the most potent inhibitor (IC50 = 3.80μM) and it also showed a good antioxidant activity. These new data furnished addnl. information about the SAR for this class of TYRIs.

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Ether – Wikipedia,
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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]thio]benzimidazole( cas:73590-85-9 ) is researched.Category: ethers-buliding-blocks.Oelschlager, H.; Seeling, A.; Seeling, B.; Westesen, K.; Bunjes, H. published the article 《Selective oxidation of 5-methoxy-2-[(3,5-dimethyl-4-methoxy-2-pyridyl)methylthio]-1-H-benzimidazole to (RS-5-methoxy-2-[[(3,5-dimethyl-4-methoxy-2-pyridyl)methyl]sulfinyl]-1-H-benzimidazole (omeprazole)》 about this compound( cas:73590-85-9 ) in Pharmazie. Keywords: omeprazole preparation decomposition kinetics; pyridylmethylthiobenzimidazole selective oxidation. Let’s learn more about this compound (cas:73590-85-9).

5-Methoxy-2-[(3,5-dimethyl-4-methoxy-2-pyridyl)methylthio]-1-H-benzimidazole was oxidized with Oxone in diluted EtOH at -5° furnishing omeprazole with an excellent yield. Addnl., decomposition kinetics of omeprazole in aqueous EtOH are presented.

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Ether – Wikipedia,
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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 56621-48-8, is researched, Molecular C10H14N2O, about Synthesis of propargylamine mycophenolate analogues and their selective cytotoxic activity towards neuroblastoma SH-SY5Y cell line, the main research direction is propargylamine mycophenolate analog preparation mol docking neuroblastoma anticancer; A(3)-coupling reaction; Cytotoxic activity; Molecular docking; Mycophenolic Acid; Neuroblastoma SH-SY5Y cells; Propargylamine mycophenolate.Reference of 4-(Piperazin-1-yl)phenol.

Twenty six propargylamine mycophenolate analogs were designed and synthesized from mycophenolic acid 1 employing a key step A3-coupling reaction. Their cytotoxic activity was examined against six cancer cell lines. Four compounds exhibited selective cytotoxicity towards neuroblastoma (SH-SY5Y) cancer cells and were less toxic to normal cells in comparison to the lead compound, MPA 1 and a standard drug, ellipticine. Mol. docking results suggested that compound I is fit well in the key amino acid of three proteins (CDK9, EGFR, and VEGFR-2) as targets in cancer therapy. The propargylamine mycophenolate scaffold might be a valuable starting point for development of new neuroblastoma anticancer drugs.

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Ether – Wikipedia,
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Computed Properties of C10H14N2O. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 4-(Piperazin-1-yl)phenol, is researched, Molecular C10H14N2O, CAS is 56621-48-8, about Synthesis and characterization of phosphorus-containing dendrimers bearing rhodamine derivatives as terminal groups. Author is Wei, Yiqian; Laurent, Regis; Majoral, Jean-Pierre; Caminade, Anne-Marie.

The synthesis of two new derivatives of Rhodamine B functionalized by phenols is reported. For one rhodamine derivative, the equilibrium between the open form and the ring-closed (spirolactam) form is completely shifted toward the latter, whereas the constitution of the other rhodamine derivative precludes ring closure. The spirolactam derivative was grafted as terminal group to a first generation phosphorus-containing dendrimer. Attempts to open the spirolactam form by adding HCl failed and resulted only in protonation of the NEt2 substituent of rhodamine.

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

Category: ethers-buliding-blocks. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]thio]benzimidazole, is researched, Molecular C17H19N3O2S, CAS is 73590-85-9, about Development of a validated RP-HPLC method for separation and determination of process-related impurities of omeprazole in bulk drugs. Author is Iuga, Cristina; Bojita, Marius; Leucuta, Sorin E..

A gradient reversed phase liquid chromatog. (RP-LC) method was developed and subsequently validated for the determination of omeprazole and its process-related impurities (noted as: impurity A, B, C, D, G, H). Separation was achieved with a Zorbax Extend C18 column and acetonitrile: water: triethylaminel percent (pH adjusted to 9.5) as eluent, at a flow rate of 0.8 mL/min. UV detection was performed at 280 nm. The described method was linear over a range of 40.6-203 μg/mL for omeprazole, 0.9556-14.334 μg/mL for impurity A, 1.1568-17.352 μg/mL for impurity B, 1.0772-16.158 μg/mL for impurity C, 1.289-19.344 μg/mL for impurity D, and 0.7968-11.952 μg/mL for impurity H. The accuracy of the method was demonstrated at 5 concentration levels in the range of 60-140% of the specification limit and the recovery of impurities was found to be in the range of 90-109%. The method is simple, rapid, selective, accurate, and useful for indicating the stability of omeprazole from dosage forms. The method can be useful in the quality control of bulk manufacturing and pharmaceutical formulations.

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Ether – Wikipedia,
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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called A simple and sensitive bioanalytical assay for simultaneous determination of omeprazole and its three major metabolites in human blood plasma using RP-HPLC after a simple liquid-liquid extraction procedure, published in 2006-12-05, which mentions a compound: 73590-85-9, mainly applied to omeprazole metabolite determination blood HPLC, Product Details of 73590-85-9.

A simple, sensitive and specific reverse-phase high-performance liquid chromatog. (HPLC) assay for the simultaneous quant. determination of omeprazole and its three metabolites in human plasma was developed and validated. This method provides excellent chromatog. resolution and peak shape for the four components and the internal standard within a 17 min run time. The simple extraction method results in a clean base line and relatively high extraction efficiency. The method was validated over the range of 2-2000 ng/mL, with 2.0 ng/mL as the lower limit of quantification. Within- and between-day accuracies for five different concentrations ranged from 95 to 102%, and 95 to 114%, resp. Within- and between-day precision ranged from 1.1 to 6.3% and 0.5 to 6.2%, resp. Simplicity and high throughput make this method suitable for clin. pharmacokinetic studies.

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Ether – Wikipedia,
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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called New N,S-substituted dienes from mono(thio)substituted-2-nitrohalo-1,3-diene and some amines, published in 2006-03-31, which mentions a compound: 56621-48-8, mainly applied to nitrohalodiene substitution reaction amine; diene substituted preparation mol crystal structure, Category: ethers-buliding-blocks.

1-(4-Methoxyphenylthio)-2-nitro-1,3,4,4-tetrachloro-1,3-butadiene, (I) reacted with piperazine derivatives and yielded N,S-substituted chloronitrodienes in methylene chloride. Compound I gave dioxaspiro-piperidinyl-substituted chloronitrodiene by the reaction with 1,4-dioxa-8-azaspiro-4,5-decane. 4-Substituted piperidinyl chloronitrodiene derivatives were obtained by the reactions of piperidines with I. 1-(4-Methoxyphenylthio)-2-nitro-1-(4-(p-nitrophenyl)piperazin-1-yl)-1,3,4,4-tetrachloro-1,3-butadiene also was structurally characterized using single-crystal X-ray diffraction anal. [triclinic, P-1, a 7.8400(2), b 9.7030(3), c 16.9628(4) Å, α 93.898(3), β 93.879(2), γ 96.9296(13)°, V 1260.67(6) Å3, Z 2].

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Ether – Wikipedia,
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HPLC of Formula: 73590-85-9. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5-Methoxy-2-[[(4-methoxy-3,5-dimethyl-2-pyridyl)methyl]thio]benzimidazole, is researched, Molecular C17H19N3O2S, CAS is 73590-85-9, about Microbiological production of omeprazole metabolites by Cunninghamella elegans. Author is Pearce, Clive M.; Lushnikova, Marina V..

Incubation of Cunninghamella elegans ATCC 9245 and the anti ulcer drug omeprazole allowed putative fungal metabolites to be isolated in sufficient quantities for structural elucidation. Three metabolites produced by the fungi were isolated using semi-preparative HPLC and their structures identified by a combination of LC/MS(n) and NMR experiments These isolates will be used as reference standards in the confirmatory anal. of mammalian metabolites of this drug.

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Ether – Wikipedia,
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Pace, Jennifer R.; Teske, Kelly A.; Chau, Lianne Q.; Dash, Radha Charan; Zaino, Angela M.; Wechsler-Reya, Robert J.; Hadden, M. Kyle published an article about the compound: 4-(Piperazin-1-yl)phenol( cas:56621-48-8,SMILESS:OC1=CC=C(N2CCNCC2)C=C1 ).Product Details of 56621-48-8. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:56621-48-8) through the article.

The Food and Drug Administration-approved antifungal agent, itraconazole (ITZ), has been increasingly studied for its novel biol. properties. In particular, ITZ inhibits the hedgehog (Hh) signaling pathway and has the potential to serve as an anticancer chemotherapeutic against several Hh-dependent malignancies. We have extended our studies on ITZ analogs as Hh pathway inhibitors through the design, synthesis, and evaluation of novel des-triazole ITZ analogs that incorporate modifications to the triazolone/side chain region of the scaffold. Our overall results suggest that the triazolone/side chain region can be replaced with various functionalities (hydrazine carboxamides and meta-substituted amides) resulting in improved potency when compared to ITZ. Our studies also indicate that the stereochem. orientation of the dioxolane ring is important for both potent Hh pathway inhibition and compound stability. Finally, our studies suggest that the ITZ scaffold can be successfully modified in terms of functionality and stereochem. to further improve its anti-Hh potency and physicochem. properties.

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