Tag: M.W:100-200

Chemical Research Letters, May 2021. In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. In an article, author is Minato, H, once mentioned the application of 123-99-9, Name is Water-soluble azelaic acid, molecular formula is C9H16O4, molecular weight is 188.2209, MDL number is MFCD00004432, category is benzisoxazole. Now introduce a scientific discovery about this category, Related Products of 123-99-9.

Purpose: The antiepileptic effects of zonisamide (ZNS) have been well documented experimentally and clinically. The purpose of this study was to examine whether ZNS reduces cerebral damage after transient focal ischemia in rats. Methods: Ischemia was induced by a transient occlusion of the left middle cerebral artery (MCA) with a 3-0 nylon monofilament for 90 min. Neurological evaluation was performed by measuring the event of neurological deficit of the contralateral forepaw and hindpaw at 10 min and 1 day after MCA occlusion (MCAo). Brain infarct size was determined by measuring triphenyltetrazonium chloride-negative stained area of the serial brain sections 1 day after MCAo. Results: The pre-or postischemic treatment with ZNS [(10-100 mg/kg p.o.), 30 min before and 4 h after or 15 min and 4 h after the occlusion] markedly reduced cerebral damage in the ipsilateral hemisphere and the neurological deficit induced by transient ischemia. The reducing effect on the damage was observed in the cortical and subcortical regions. Preischemic treatment with carbamazepine (CBZ 60 mg/kg p.o. twice 30 min before and 4 h after MCAo) tended to reduce the cerebral damage and neurological deficit, but the lower dose (20 mg/kg p.o. twice) did not. Valproate (VPA 1,000 mg/kg p.o. twice) also had no effect. Conclusions: ZNS at the anticonvulsant dose, unlike CBZ and VPA, ameliorated the brain infarction and the event of neurological deficit after transient focal cerebral ischemia. These data suggest that ZNS has therapeutic potential in protecting against ischemic cerebral damage, such as stroke.

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Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

When developing chemical systems it’s of course important to gain a deep understanding of the chemical reaction process. 123-76-2, Name is 4-Oxopentanoic acid, SMILES is C(C(C)=O)CC(O)=O, in an article , author is Solanki, Pavankumar V., once mentioned of 123-76-2, Application In Synthesis of 4-Oxopentanoic acid.

The present work describes an improved and efficient process for the synthesis of paliperidone (1), an antipsychotropic agent. The synthesis comprises the DBU (1,8-diazabicycloundec-7-ene) catalyzed N-alkylation of 3-(2-chloroethyl)-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]-pyrimidin-4-one (5) with 6-fluoro-3-piperidin-4-yl-1,2 benzisoxazole hydrochloride (6) in methanol as the solvent and diisopropylamine as a base to yield paliperidone (1) with 85% yield and over 97% purity by HPLC. The present work also describes an industrially efficient purification process for the removal of critical process related impurities (8 and 9) in paliperidone (1). The process furnished 1 with an overall yield of about 60% and 99.85% purity.

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Benzisoxazole – Wikipedia,
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Chemical engineers work across a number of sectors, processes differ within each of these areas, but chemistry and chemical engineering roles are found throughout, and are directly involved in the manufacturing process of chemical products and materials. Application of 701-97-3.

A rapid, cost-effective and eco-friendly synthesis of 3-substituted 1,2-benzisoxazoles from o-hydroxy ketoximes in solvent free conditions using solid support under microwave irradiation has been achieved.

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Benzisoxazole – Wikipedia,
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New discoveries in chemical research and development in 2021.Product Details of 3721-95-7, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction. 3721-95-7, Name is Cyclobutanecarboxylic acid, molecular formula is C5H8O2. In an article, author is Katritzky, AR,once mentioned of 3721-95-7.

A quantitative structure-reactivity relationship (QSRR) study of the decarboxylation rates of 6-nitrobenzisoxazole-3-carboxylic acid (Kemp, D. S.; Paul, K. G. J. Am. Chem. Sec. 1975, 97, 7305). employing the CODESSA program correlates the effect of 24 solvents with theoretical descriptors to provide a straightforward interpretation of these solvent effects in terms of molecular parameters.

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Benzisoxazole – Wikipedia,
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While the job of a research scientist varies, most chemistry careers in research are based in laboratories, where research is conducted by teams following scientific methods and standards.75-98-9, Name is Pivalic acid, SMILES is CC(C)(C)C(O)=O, in an article , author is Kociolek, Martin, once mentioned of 75-98-9, Product Details of 75-98-9.

The bioreduction of N-oxide compounds is the basis for the mode of action of a number of biologically active molecules. These compounds are thought to act by forming a reactive oxygen species through an intracellular reduction and subsequent redox cycling process within the organism. With these results in mind, the preliminary investigation into the electrochemical reduction of the benzisoxazole 2-oxide ring system was undertaken, with the thought that this class of compounds would reduce in a similar fashion to other N-oxide heterocycles. The electrochemical reduction of 3-phenyl-1,2-benzisoxazole 2-oxide on boron-doped diamond was studied using cyclic and square wave voltammetry as well as controlled potential electrolysis and HPLC for qualitative identification of the reaction products. It was found that the reduction proceeded with an initial quasi-reversible one-electron reduction followed by the very fast cleavage of either the endocyclic or exocyclic N-O bond. Subsequent electron transfer and protonation resulted in an overall two-electron reduction and formation of the 2-hydroxyaryl oxime and benzisoxazole. These results are analogous to those observed in the electrochemical reduction of other heterocyclic N-oxides albeit the reduction of the benzisoxazole N-oxides takes place at a more negative potential. However, these encouraging results warrant further investigation into the reduction potential of substituted benzisoxazole N-oxides as well as to elucidate and characterize the nature of the intermediate species involved. Copyright (c) 2014 John Wiley & Sons, Ltd.

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Academic researchers, R&D teams, teachers, students, policy makers and the media all rely on us to share knowledge that is reliable, accurate and cutting-edge. 40052-13-9, Name is 3-Tert-butoxy-3-oxopropanoic acid, formurla is C7H12O4. In a document, author is BRANCA, C, introducing its new discovery. Application In Synthesis of 3-Tert-butoxy-3-oxopropanoic acid.

We tested the morphogenetic and cell elongating activity of 1,2-benzisoxazole-3-one, a compound similar to 1,2-benzisoxazole-3-acetic acid but lacking the lateral carbon chain. For comparison, we tested also the activity of indole-2,3-dione, having the same indolic ring as indole-3-acetic acid but no lateral carbon chain. The tests were made on the regeneration of tomato (Lycopersicon esculentum Miller var. Alice) from cotyledons and on pea (Pisum sativum L. var. Alaska) stem elongation. We found that 1,2-benzisoxazole-3-one retains part of the high shoot inducing activity of 1,2-benzisoxazole-3-acetic acid, while indole-2,3-dione is inactive. Both compounds have no effect on root induction or cell elongation. It seems therefore that the activity of 1,2-benzisoxazole-3-acetic acid is partly related to the structure of its ring, and that also in this respect 1,2-benzisoxazole-3-acetic acid differs from other auxin-like compounds.

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Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

While the job of a research scientist varies, most chemistry careers in research are based in laboratories, where research is conducted by teams following scientific methods and standards.619-05-6, Name is 3,4-Diaminobenzoic acid, SMILES is O=C(O)C1=CC=C(N)C(N)=C1, in an article , author is COUTINHO, DLM, once mentioned of 619-05-6, Category: Benzisoxazole.

4-(2-Hydroxybenzoyl)-1-phenylpyrazole (1) has been used in the synthesis of benzofuran (2), coumarin (5) and benzisoxazole (9).

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Benzisoxazole – Wikipedia,
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Modeling chemical reactions helps engineers virtually understand the chemistry, optimal size and design of the system, and how it interacts with other physics that may come into play. 532-32-1, Name is Sodium benzoate, SMILES is O=C([O-])C1=CC=CC=C1.[Na+], in an article , author is Mikhailovskii, A. G., once mentioned of 532-32-1, Product Details of 532-32-1.

2-Aroylcyclohexanones, obtained from piperidinocyclohexene, react with hydrazine, hydroxylamine, and o-phenylenediamine to give the corresponding derivatives of bicyclic heterocycles – indazole, 2,1-benzisoxazole, and 2-spiro-cyclohexylbenzimidazole. The structure of a derivative of benzyloxazole has been determined by X-ray crystallography.

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Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

When developing chemical systems it’s of course important to gain a deep understanding of the chemical reaction process. 99-14-9, Name is Propane-1,2,3-tricarboxylic acid, SMILES is O=C(O)CC(CC(O)=O)C(O)=O, in an article , author is Orlov, VY, once mentioned of 99-14-9, Formula: https://www.ambeed.com/products/99-14-9.html.

General relations holding in nucleophilic substitution of hydrogen in para-substituted nitroarenes by phenylacetonitrile carbanion were analyzed in terms of the Klopman reactivity indices. Requirements to the substrate structure were determined, which restrict the scope of application of this method to synthesis of 2,1-benzisoxazole derivatives.

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While the job of a research scientist varies, most chemistry careers in research are based in laboratories, where research is conducted by teams following scientific methods and standards.113-24-6, Name is Sodium pyruvate, SMILES is O=C(C)C([O-])=O.[Na+], in an article , author is Lee, Lljung, once mentioned of 113-24-6, Related Products of 113-24-6.

Objectives Alzheimer’s disease (AD) is characterized by reduced acetylcholinesterase (AChE) activity in the postmortem tissues of AD patients. Therefore, AChE has been an attractive target for the diagnosis of AD. In the present study, 5,7-dihydro-3-[2-(1-(phenyimethyl)-4piperidinyl)ethyl]-6H-pyrrolo[3,2-f]-1,2-benzisoxazol-6-one (CP-118,954), a potent AChE inhibitor, was labelled with radiolodine and evaluated as an AChE imaging agent for SPECT. Methods Radioiodine-labelled CP-118,954 was prepared from CP-144,885 and [I-125]iodobenzyl bromide, and anti-AChE activities of iodine-substituted CP-118,954 were measured. Metabolism studies were carried out in samples of blood and whole brain of mice injected with 2[I-123]iodo-CP-118,954 (I-123-1). Tissue distribution studies were also performed in mice injected with I-125-1, and samples of blood, thyroid, stomach, and brain tissue (cerebellum, striatum and cortex) were removed, weighed and counted. Results Of the ligands, 2-iodo-CP-118,954 exhibited higher binding affinity for AChE (IC50 = 24 nM) than the other positional isomers. 2-[I-125]lodo-CP-118,954 was found to have a lipophilicity (log P=2.1) favouring brain permeability and metabolic stability in mouse brain, but a marginal target (striatum) to non-target (cerebellum) uptake ratio (1.1) in mouse brain. Conclusion This result demonstrates that 2-[I-125]iodo-CP-118,954 may be unsuitable for AChE imaging. These findings suggest that radioligands suitable for AChE imaging should have not only a specific structure but also a sub-nanomolar to low nanomolar IC50.

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,Benzisoxazole – an overview | ScienceDirect Topics