Tag: M.W:200-300

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , HPLC of Formula: https://www.ambeed.com/products/1878-68-8.html, 1878-68-8, Name is 4-Bromophenylacetic acid, molecular formula is C8H7BrO2, belongs to phthalazine compound. In a document, author is Im, Jeong Kyun, introduce the new discover.

A rarely explored oxidative ring contraction of electron-rich 1,2-diazine is described. Upon treatment with an electrophilic chlorinating reagent (TCICA), 1,4-dimethoxyphthalazines undergo an N-chlorination-induced ring contraction that is accompanied by the loss of one nitrogen atom. The scope of this unusual reactivity was examined with a range of 1,4-dimethoxyphthalazine derivatives. In addition, a mechanism proceeding via a bicyclic species was proposed on the basis of an isolated reaction intermediate and DFT calculations. (C) 2020 Elsevier Ltd. All rights reserved.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 1878-68-8. HPLC of Formula: https://www.ambeed.com/products/1878-68-8.html.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 58743-75-2, Name is 4′-Ethyl-[1,1′-biphenyl]-4-carbonitrile, molecular formula is C15H13N. In an article, author is Thirupaiah, Bade,once mentioned of 58743-75-2, Quality Control of 4′-Ethyl-[1,1′-biphenyl]-4-carbonitrile.

A one-pot procedure has been developed for the synthesis of substituted 2,3-dihydro-2-(6-(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)-7H-[1,2,4]triazolo[3,4-b] [1,3,4]thiadiazin-3-yl)phthalazine-1,4-diones by reaction of 3-(2-bromoacetyl)-4-hydroxy-6-methyl-2H-pyran-2-one, 4-amino-5-hydrazino-4H-[1,2,4]triazole-3-thiol, and phthalic anhydrides in acetic acid medium. Similarly, a one-pot, three-component synthetic procedure has been developed for substituted 3-[3-(N-1-benzylidene-hydrazino)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-6-yl]-4-hydroxy-6-methyl-pyran-2-ones from 3-(2-bromoacetyl)-4-hydroxy-6-methyl-2H-pyran-2-one, 4-amino-5-hydrazino-4H-[1,2,4]triazole-3-thiol, and various aromatic aldehydes in absolute ethanol and a few drops of glacial acetic acid. [Supplementary materials are available for this article. Go to the publisher’s online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 502496-34-6, Name is 4-Bromo-2-fluoro-6-nitrotoluene, molecular formula is C7H5BrFNO2. In an article, author is Maheswari, Cinnathambi Subramani,once mentioned of 502496-34-6, Safety of 4-Bromo-2-fluoro-6-nitrotoluene.

Fish scale hydroxyapatite (FS-HAP) has been used as an efficient catalyst for the synthesis of 3-amino-1H-pyrazolo[1,2-b]phthalazine-2-carboxamide derivatives via the one-pot, three-component cyclocondensation reactions of aromatic aldehydes with cyanoacetamide and phthalhydrazide under solvent-free condition. FS-HAP has been characterized by FT-IR, XRD, SEM and EDS techniques. The synthesized compounds were evaluated for their in vitro antibacterial activity against gram-positive (Bacillus cereus, Bacillus aryabhattai, Bacillus megaterium, Staphylococcus aureus) and gram-negative (Serratia marcescens, Bacillus Pseudomonas putida, Escherichia coli, Enterobacter cloacae) bacteria. Tetracycline and erythromycin were used as standard antibiotics in this investigation. In the present protocol, we have achieved remarkable yields of the product in shorter reaction time and the catalyst was easily recovered and reused.

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

In an article, author is Turhan, K., once mentioned the application of 80382-23-6, Quality Control of Sodium 2-(4-((2-oxocyclopentyl)methyl)phenyl)propanoate, Name is Sodium 2-(4-((2-oxocyclopentyl)methyl)phenyl)propanoate, molecular formula is C15H17NaO3, molecular weight is 268.2835, MDL number is MFCD00941425, category is phthalazine. Now introduce a scientific discovery about this category.

In this study, substituted 2H-indazolo[2,1-b]phthalazine-1,6,11-triones, that may possess biological activity, have been synthesized via one-pot three-component cyclocondensation reaction of aromatic aldehydes, cyclic 1,3-dione and phthalhydrazide in ethanol catalyzed by Y(OTf)(3) with good to excellent yields. The structures of all synthesized compounds, 3,4-dihydro-13-phenyl-2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione (4a), 13-(4-cyanophenyl)-3,4-dihydro-2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione (4b), 3,4-dihydro-3,3-dimethyl-13-(4-cyanophenyl)-2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione (4c), 3,4-dihydro-3,3-dimethyl-13-phenyl-2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione (4d), and 3,4-dihydro-13-(4-isopropylphenyl)-3,3-dimethyl-2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione (4e) have been elucidated from IR, NMR and mass spectral data.

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 1149-26-4, Name is Z-L-Val-OH, formurla is C13H17NO4. In a document, author is Khalili, Akram, introducing its new discovery. Application In Synthesis of Z-L-Val-OH.

4-Methyl-1-(3-sulfopropyl)pyridinium hydrogen sulfate ([MSPP][HSO4]) as a new acidic ionic liquid was prepared in a quick and easy process, and characterized by some techniques such as H-1 NMR, C-13 NMR and FT-IR analysis. Then, [MSPP][HSO4] was immobilized on silica nanoparticles by impregnation method to afforded heterogeneous acidic ionic liquid ([MSPP]HSO4@nSiO(2)) and characterized by elemental analysis (CHNS), FT-IR, and SEM. The worthiness of [MSPP]HSO4@nSiO(2) has been investigated for the synthesis of various substituted phthalazine-ones as well as selective synthesis of mono- and bis-phthalazine-ones as imperative biologically active compounds. The reaction has been carried out under solvent-free conditions, simple work-up procedure and the products were obtained in excellent to good yields. Moreover, the catalyst was reused five times without decay in catalytic activity performance. (C) 2018 Elsevier B.V. All rights reserved.

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

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, 1149-26-4, Name is Z-L-Val-OH, SMILES is CC(C)[C@@H](C(O)=O)NC(OCC1=CC=CC=C1)=O, belongs to phthalazine compound. In a document, author is Akabane, Takafumi, introduce the new discover, Application In Synthesis of Z-L-Val-OH.

Human hepatocytes are a physiologically relevant tool useful in evaluating liver-related pharmacokinetics, including non-cytochrome P-450 (CYP) metabolism, due to their broad spectrum of metabolic enzyme activity. To verify the usefulness of human hepatocytes in evaluating non-CYP metabolism for drug discovery, we compared intrinsic clearance values (CLint) in freshly isolated and cryopreserved hepatocytes using 14 compounds primarily metabolized by non-CYP enzymes, including UDP-glucuronosyltransferase, carbonyl/aldo-keto reductase, aldehyde oxidase, flavin-containing monooxygenase, and monoamineoxidase. Cryopreservation resulted in a > 20% reduction (maximum: 50%) in CLint in 7/14 compounds (statistically significant for 5 compounds) on comparing CLint values in freshly isolated and cryopreserved hepatocytes from the same donors (n = 4). However, the number of compounds with > 20% CLint reduction decreased to 3 on comparing average of CLint values including un-matched donors (dolasetron: -27%, naltorexone: -32%, and phthalazine: -48%; statistically significant for phthalazine, n = 6-11). These findings suggest that fresh hepatocytes are useful in evaluating intact non-CYP enzyme activities. However, we must note that the reduction in CLint by cryopreservation could be rendered negligible if high-activity lots are selected for assay. We therefore recommend using cryopreserved hepatocytes for large-scale screening for non-CYP metabolism in drug discovery research considering the advantages in usability with cryopreserved hepatocytes.

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 1149-26-4 is helpful to your research. Application In Synthesis of Z-L-Val-OH.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 58743-75-2, Name is 4′-Ethyl-[1,1′-biphenyl]-4-carbonitrile, formurla is C15H13N. In a document, author is Dong, Chune, introducing its new discovery. COA of Formula: https://www.ambeed.com/products/58743-75-2.html.

A one-step synthetic protocol for phthalazine derivatives has been developed. In the presence of Et3N, a series of phthalazine derivatives were conveniently prepared in high yield by the reaction of ortho-alkynylphenyl ketones and hydrazine under mild reaction conditions. The structure was unambiguously confirmed by X-ray crystallographic analysis of product 2i.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 58743-75-2 help many people in the next few years. COA of Formula: https://www.ambeed.com/products/58743-75-2.html.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 24650-42-8, Name is 2,2-Dimethoxy-2-phenylacetophenone, molecular formula is C16H16O3, belongs to phthalazine compound. In a document, author is Vafaee, Asieh, introduce the new discover, Computed Properties of https://www.ambeed.com/products/24650-42-8.html.

Sodium hydrogen carbonate, NaHCO3, efficiently catalyzes the one-pot, three-component reaction of phthalhydrazide, an aromatic aldehyde, and malononitrile or ethyl cyanoacetate under solvent-free conditions, to afford the corresponding 1H-pyrazolo[1,2-b]phthalazine-5,10-diones in high yields. Easy work up, inexpensive and readily available catalyst and avoiding the use of harmful organic solvents are other advantages of this simple procedure.

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 24650-42-8. Computed Properties of https://www.ambeed.com/products/24650-42-8.html.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 838-88-0, Name is 4,4′-Methylenebis(2-methylaniline), SMILES is NC1=CC=C(CC2=CC=C(C(C)=C2)N)C=C1C, belongs to phthalazine compound. In a document, author is Zatsikha, Yuriy V., introduce the new discover, Product Details of 838-88-0.

Diiminoisoindoline (DII) is a crucial reagent for the synthesis of phthalocyanine as well as related macrocycles and chelates such as hemiporphyrazine and bis(iminopyridyl)isoindoline. In this report, we present the synthesis and characterization of four 1,3-diylideneisoindolines prepared via the reaction of several organic CH acids and DII. These orange or red compounds exhibit intense pi-pi* transitions in the UV visible region. The redox properties and electronic structures of all new compounds were investigated using cyclic voltammetry and density functional theory (DFT). The observed electrochemistry and UV-visible transitions are in good agreement with the DFT and time-dependent DFT calculations, which indicate that the HOMO is largely centered at the O=C-C-C=O fragments, and the lowest unoccupied molecular orbital is more extended onto the isoindoline unit.

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 838-88-0 is helpful to your research. Product Details of 838-88-0.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 608141-42-0, Name is (S)-1-(3-Ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethanamine, SMILES is O=S(C[C@@H](N)C1=CC=C(OC)C(OCC)=C1)(C)=O, in an article , author is Shamsi-Sani, Mahnaz, once mentioned of 608141-42-0, HPLC of Formula: https://www.ambeed.com/products/608141-42-0.html.

Butane-1-soltunic acid modified starch-coated gamma-Fe2O3 magnetic nanoparticles (gamma-Fe2O3 @starchn-butyl SO3H] was easily prepared through a ring opening reaction of 1,4-butane sultone with nanomagnetic gamma-Fe2O3 @starch. After structural studies, using FT-IR, SEM, XRD, TGA, TEM, EDX, VSM and also pH analysis the efficiency of this reagent in the preparation of tetrahydrobenzimidazo[2,1-b] quinazolin-1(2H)-ones and 2H-indazolo[2,1-b]phthalazine-triones was studied. Operational simpleness, high yields, short reaction times, wide applicability and simple recyclability of the catalyst employing an external magnet are the most important advantages of this methodology.

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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem