Day: April 14, 2021

In an article, author is Murata, M., once mentioned the application of 113-24-6, Name is Sodium pyruvate, molecular formula is C3H3NaO3, molecular weight is 110.0439, MDL number is MFCD00002586, category is Benzisoxazole. Now introduce a scientific discovery about this category, COA of Formula: C3H3NaO3.

ZONISAMIDE: A NEW DRUG FOR PARKINSON’S DISEASE

Zonisamide, a benzisoxazole derivative, is an antiepileptic drug with a long half-life. Three nationwide, double-blind, placebo-controlled studies carried out in Japan prompted the approval of zonisamide as an antiparkinsonian agent in early 2009. The addition of zonisamide at 25-50 mg/day to currently used antiparkinsonian drugs significantly improved cardinal symptoms in patients with advanced Parkinson’s disease. The effects were maintained over more than 1 year even in patients with advanced disease. Zonisamide has multiple modes of action, and its effects on Parkinson’s disease include activation of dopamine synthesis, inhibition of monoamine oxidase, inhibition of T-type calcium channels and inhibition of an indirect pathway in the basal ganglia through the delta opioid receptor Furthermore, zonisamide exhibits neuroprotective effects in animal models of Parkinson’s disease. It strongly inhibits quinoprotein formation and markedly increases glutathione S-transferase levels in the striatum by enhancing the astroglial cysteine transport system and/or astroglial proliferation via S100 beta production and secretion.

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

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 629-25-4, Name is Sodium Laurate. In a document, author is Reddy, C. B. Rajashekar, introducing its new discovery. Computed Properties of C12H23NaO2.

An improved, practical and efficient method for the synthesis of novel N-chloro derivatives using calcium hypochlorite

The developed method was employed in the synthesis of medicinally important compounds and intermediates in the organic synthesis. Herein we report a variety of novel N-chloro derivatives of benzisoxazole, benzimidazoles and several other N-chloro derivatives using 1.2 equivalents of calcium hypochlorite. The process does not require any additives like acids or bases and produced moderate to excellent yields of desired products under mild conditions.

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

75-98-9, Name is Pivalic acid, molecular formula is C5H10O2, belongs to Benzisoxazole compound, is a common compound. In a patnet, author is Kociolek, Martin, once mentioned the new application about 75-98-9, Computed Properties of C5H10O2.

Electrochemical reduction of 3-phenyl-1, 2-benzisoxazole 2-oxide on boron-doped diamond

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

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Quality Control of 2-Oxobutanoic acid, 600-18-0, Name is 2-Oxobutanoic acid, molecular formula is C4H6O3, belongs to Benzisoxazole compound. In a document, author is Whitcombe, MJ, introduce the new discover.

Imprinted polymers: Versatile new tools in synthesis

The use of molecularly imprinted polymers in synthetic organic chemistry is reviewed. These materials are prepared in the presence of a template for which they carry a functional and stereochemical memory and can be likened to artificial antibodies or enzymes. Their unique properties have been exploited by the use of imprinted polymers as stereo- and regio-selective solid supports in condensation reactions and hydride reduction, as protecting groups in the acylation of polyols and as catalysts to enhance the rates of reactions as diverse a Diels-Alder reaction, an Aldol condensation, beta-elimination, the benzisoxazole isomerization, transesterification and ester hydrolyses.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 600-18-0. Quality Control of 2-Oxobutanoic acid.

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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 90-27-7, Name is 2-Phenylbutanoic acid, SMILES is CCC(C1=CC=CC=C1)C(O)=O, in an article , author is SATO, H, once mentioned of 90-27-7, Product Details of 90-27-7.

STUDIES ON URICOSURIC DIURETICS .3. SUBSTITUTED 1,3-DIOXOLO[4,5-F]-1,2-BENZISOXAZOLE-6-CARBOXYLIC ACIDS AND 1,3-DIOXOLO[4,5-G]-1,2-BENZISOXAZOLE-7-CARBOXYLIC ACIDS

A series of substituted 1,3-dioxolo[4,5-f]-1,2-benzisoxazole-6-carboxylic acids 13 and 1,3-dioxolo[4,5-g]-1,2-benzisoxazole-7-carboxylic acids 14 were synthesized and evaluated for diuretic and uricosuric activities in rats. Most of the benzisoxazole derivatives 13 and 14 showed potent diuretic activities. Moderate uricosuric activities were also found in 14a, 14b, and 14f.

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

Electric Literature of 868-14-4, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 868-14-4, Name is Potassium hydrogen tartrate, SMILES is [O-]C(C(C(C(O)=O)O)O)=O.[K+], belongs to Benzisoxazole compound. In a article, author is Chauhan, Jay, introduce new discover of the category.

One-pot synthesis of 2,1-benzisoxazoles (anthranils) by a stannous chloride-mediated tandem reduction-heterocyclization of 2-nitroacylbenzenes under neutral conditions

Classically, 2,1-benzisoxazoles (anthranils) are prepared from 2-nitroacylbenzenes by a reductive heterocyclization reaction with Sn or SnCl2 concentrated HCl. Acid sensitive functionalities are expected to be incompatible with these conditions; milder approaches to the synthesis of 2,1-benzisoxazoles would be welcomed. We demonstrate that SnCl2 center dot 2H(2)O in a 1:1 mixture of EtOAc/MeOH is capable of mediating the tandem reduction-heterocyclization of a variety of 2-nitroacylbenzenes to their corresponding 2,1-benzisoxazoles in good to excellent yields under essentially neutral conditions. Importantly, several commonly used acid-labile protecting groups, including Boc carbamate, tert-butyl ether, and tert-butyl ester, proved orthogonal to these reaction conditions. (C) 2012 Elsevier Ltd. All rights reserved.

Electric Literature of 868-14-4, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 868-14-4 is helpful to your research.

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

Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics, 868-14-4, Name is Potassium hydrogen tartrate, SMILES is [O-]C(C(C(C(O)=O)O)O)=O.[K+], belongs to Benzisoxazole compound. In a document, author is Zhang, Donglu, introduce the new discover, COA of Formula: C4H5KO6.

Reductive isoxazole ring opening of the anticoagulant razaxaban is the major metabolic clearance pathway in rats and dogs

Razaxaban is a selective, potent, and orally bioavailable inhibitor of coagulation factor Xa. The molecule contains a 1,2-benzisoxazole structure. After oral administration of [C-14] razaxaban to intact and bile duct-cannulated rats (300 mg/kg) and dogs (20 mg/kg), metabolism followed by biliary excretion was the major elimination pathway in both species, accounting for 34 to 44% of the dose, whereas urinary excretion accounted for 3 to 13% of the dose. Chromatographic separation of radioactivity in urine, bile, and feces of rats and dogs showed that razaxaban was extensively metabolized in both species. Metabolites were identified on the basis of liquid chromatography/tandem mass spectrometry and comparison with synthetic standards. Among the 12 metabolites identified, formation of an isoxazole-ring opened benzamidine metabolite (M1) represented a major metabolic pathway of razaxaban in rats and dogs. However, razaxaban was the major circulating drug-related component (>70%) in both species, and M1, M4, and M7 were minor circulating components. In addition to the in vivo observations, M1 was formed as the primary metabolite in rat and dog hepatocytes and in the rat liver cytosolic fraction. The formation of M1 in the rat liver fraction required the presence of NADH. Theses results suggest that isoxazole ring reduction, forming a stable benzamidine metabolite (M1), represents the primary metabolic pathway of razaxaban in vivo and in vitro. The reduction reaction was catalyzed by NADH-dependent reductase(s) in the liver and possibly by intestinal microflora on the basis of the recovery of M1 in feces of bile duct-cannulated rats.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 868-14-4 is helpful to your research. COA of Formula: C4H5KO6.

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

Chemistry, like all the natural sciences, Quality Control of 3,4-Diaminobenzoic acid, begins with the direct observation of nature¡ª in this case, of matter.619-05-6, Name is 3,4-Diaminobenzoic acid, SMILES is O=C(O)C1=CC=C(N)C(N)=C1, belongs to Benzisoxazole compound. In a document, author is Rajendraprasad, Nagaraju, introduce the new discover.

EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF QUETIAPINE FUMARATE IN PHARMACEUTICALS AND HUMAN URINE USING CALMAGITE AS AN ION-PAIR REAGENT

Quetiapine fumarate (QTF) is an antipsychotic drug belonging to the benzisoxazole derivatives indicated for the treatment of schizophrenia. A sensitive and selective method based on dichloromethane-extractable ion-pair of QTF with calmagite (CGT), which exhibited an absorption maximum at 490 nm, is described. At this. wavelength, Beer’s law is obeyed over the concentration range of 3.0-30.0 mu g ml(1). The apparent molar absorptivity, limit of detection (L OD) and quantitation (LOQ) values are 1.32×10(4) I mol(1) cm(-1), 0.27 and 0.81 mu g ml(1), respectively. The reaction is extremely rapid at room temperature and the absorbance values remain unchanged up to 19 h. The precision results, expressed as intra-day and inter-day relative standard deviation values, are satisfactory (RSD <= 2.2%). The accuracy is satisfactory as well (RE <= 2.44%). The method was successfully applied to the determination of QTF in pharmaceuticals and spiked human urine with satisfactory results. No interference was observed from common pharmaceutical adjuvants in tablets. Statistical comparison of the results with the official method showed an excellent agreement and indicated no significant difference in precision. Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 619-05-6. Quality Control of 3,4-Diaminobenzoic acid.

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

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Recommanded Product: 40052-13-9, 40052-13-9, Name is 3-Tert-butoxy-3-oxopropanoic acid, molecular formula is C7H12O4, belongs to Benzisoxazole compound. In a document, author is NAKASA, H, introduce the new discover.

FORMATION OF REDUCTIVE METABOLITE, 2-SULFAMOYLACETYLPHENOL, FROM ZONISAMIDE IN RAT-LIVER MICROSOMES

Zonisamide (1,2-benzisoxazole-3-methanesulfonamide) was metabolized to its reductive product, 2-sulfamoylacetylphenol, in rat liver microsomes under anaerobic conditions. The rate of NADPH-dependent reaction was much more rapid than that of NADH-dependent reaction. Furthermore, synergistic effect of NADH on NADPH-dependent reaction was not observed. The optimal formation of 2-sulfamoylacetylphenol from zonisamide in the presence of NADPH was observed around pH 7.0. Cimetidine showed an inhibitory effect on the formation of 2-sulfamoylacetylphenol in a dose-dependent manner. The reductive metabolism of zonisamide was almost completely inhibited by carbon monoxide, and was increased by pretreatment of rats with phenobarbital and pregnenolone 16-alpha-carbonitrile but not by pretreatment with ethanol, 3-methylcholanthrene and imidazole. These results suggest that phenobarbital- and pregnenolone 16-alpha-carbonitrile-inducible form(s) of cytochrome P-450 is responsible for the reductive metabolism of zonisamide to 2-sulfamoylacetylphenol in rat liver microsomes.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 40052-13-9. Recommanded Product: 40052-13-9.

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

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 90-27-7, Name is 2-Phenylbutanoic acid, molecular formula is , belongs to Benzisoxazole compound. In a document, author is Maximiano, Flavio A., Quality Control of 2-Phenylbutanoic acid.

Decarboxylation of 6-nitrobenzisoxazole-3-carboxylate in mixed micelles of zwitterionic and positively charged surfactants

The rate of decarboxylation of 6-nitrobenzisoxazole-3-carboxylate, NBOC, was determined in micelles of N-hexadecyl-N,N,N-trimethylammonium bromide or chloride ( CTAB or CTAC), N-hexadecyl-N,N-dimethyl-3-ammonium-1-propanesulfonate (HPS), N-dodecyl-N,N-dimethyl-3-ammonium-1-propanesulfonate (DPS), N-dodecyl-N, N,N-trimethylammonium bromide (DTAB), hexadecylphosphocholine (HPC), and their mixtures. Quantitative analysis of the effect on micelles on the velocity of NBOC decarboxylation allowed the estimation of the rate constants in the micellar pseudophase, k(m), for the pure surfactants and their mixtures. The extent of micellar catalysis for NBOC decarboxylation, expressed as the ratio k(m)/k(w), where k(w) is the rate constant in water, varied from 240 for HPS to 62 for HPC. With HPS or DPS, k(m) decreased linearly with CTAB(C) mole fraction, suggesting ideal mixing. With HPC, k(m) increased to a maximum at a CTAB(C) mole fraction of ca. 0.5 and then decreased at higher CTAB(C). Addition of CTAB(C) to HPC, where the negative charge of the surfactant is close to the hydrophobic core, produces tight ion pairs at the interface and, consequently, decreases interfacial water contents. Interfacial dehydration at the surface in equimolar HPC/CTAB(C) mixtures, and interfacial solubilization site of the substrate, can explain the observed catalytic synergy, since the rate of NBOC decarboxylation increases markedly with the decrease in hydrogen bonding to the carboxylate group.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 90-27-7, in my other articles. Quality Control of 2-Phenylbutanoic acid.

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