Tag: M.W:100-200

Electric Literature of 920-66-1, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 920-66-1, Name is 1,1,1,3,3,3-Hexafluoropropan-2-ol, SMILES is OC(C(F)(F)F)C(F)(F)F, belongs to pyridazines compound. In a article, author is Dadou, Said, introduce new discover of the category.

Crystal structures and Hirshfeld surface analyses of 4-benzyl-6-phenyl-4,5-dinvdropyriaazin-3(2H)-one and methyl 2-[5-(2,6-dichlorobenzyl)-6-oxo-3-phenyl-1,4,5,6-tetrahydropyridazin-1-yl]acetate

The asymmetric units of the title compounds both contain one nonplanar molecule. In 4-benzyl-6-phenyl-4,5-dihydropyridazin-3(2H)-one, C17H14N2O, (I), the phenyl and pyridazine rings are twisted with respect to each other, making a dihedral angle of 46.69 (9)degrees; the phenyl ring of the benzyl group is nearly perpendicular to the plane of the pyridazine ring, the dihedral angle being 78.31 (10)degrees. In methyl 2-[5-(2,6-dichlorobenzyl)-6-oxo-3-phenyl-1,4,5,6-tetrahydropyridazin-1-yl]acetate, C20H16C12N2O3, (II), the phenyl and pyridazine rings are twisted with respect to each other, making a dihedral angle of 21.76 (18)degrees, whereas the phenyl ring of the dichlorobenzyl group is inclined to the pyridazine ring by 79.61 (19)degrees. In the crystal structure of (I), pairs of N-H center dot center dot center dot O hydrogen bonds link the molecules into inversion dimers with an R-2(2)(8) ring motif. In the crystal structure of (II), C-H center dot center dot center dot O hydrogen bonds generate dimers with R-1(2)(7), R(2)(2)6) and R-2(2)(18) ring motifs. The Hirshfeld surface analyses of compound (I) suggests that the most significant contributions to the crystal packing are by H center dot center dot center dot H (48.2%), C center dot center dot center dot H/H center dot center dot center dot C (29.9%) and O center dot center dot center dot H/H center dot center dot center dot O (8.9%) contacts. For compound (II), H center dot center dot center dot H (34.4%), C center dot center dot center dot H/H center dot center dot center dot C (21.3%) and O center dot center dot center dot H/H center dot center dot center dot O (16.5%) interactions are the most important contributions.

Electric Literature of 920-66-1, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 920-66-1.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 920-66-1, Name is 1,1,1,3,3,3-Hexafluoropropan-2-ol, molecular formula is C3H2F6O, belongs to pyridazines compound. In a document, author is Alotaibi, Ghallab, introduce the new discover, COA of Formula: C3H2F6O.

Effects of glial glutamate transporter activator in formalin-induced pain behaviour in mice

Background Nociceptive pain remains a prevalent clinical problem and often poorly responsive to the currently available analgesics. Previous studies have shown that astroglial glutamate transporter-1 (GLT-1) in the hippocampus and anterior cingulate cortex (ACC) is critically involved in pain processing and modulation. However, the role of astroglial GLT-1 in nociceptive pain involving the hippocampus and ACC remains unknown. We investigated the role of 3-[[(2-Methylphenyl) methyl]thio]-6-(2-pyridinyl)-pyridazine (LDN-212320), a GLT-1 activator, in nociceptive pain model and hippocampal-dependent behavioural tasks in mice. Methods We evaluated the effects of LDN-212320 in formalin-induced nociceptive pain model. In addition, formalin-induced impaired hippocampal-dependent behaviours were measured using Y-maze and object recognition test. Furthermore, GLT-1 expression and extracellular signal-regulated kinase phosphorylation (pERK1/2) were measured in the hippocampus and ACC using Western blot analysis and immunohistochemistry. Results The LDN-212320 (10 or 20 mg/kg, i.p) significantly attenuated formalin-evoked nociceptive behaviour. The antinociceptive effects of LDN-212320 were reversed by systemic administration of DHK (10 mg/kg, i.p), a GLT-1 antagonist. Moreover, LDN-212320 (10 or 20 mg/kg, i.p) significantly reversed formalin-induced impaired hippocampal-dependent behaviour. In addition, LDN-212320 (10 or 20 mg/kg, i.p) increased GLT-1 expressions in the hippocampus and ACC. On the other hand, LDN-212320 (20 mg/kg, i.p) significantly reduced formalin induced-ERK phosphorylation, a marker of nociception, in the hippocampus and ACC. Conclusion These results suggest that the GLT-1 activator LDN-212320 prevents nociceptive pain by upregulating astroglial GLT-1 expression in the hippocampus and ACC. Therefore, GLT-1 activator could be a novel drug candidate for nociceptive pain. Significance: The present study provides new insights and evaluates the role of GLT-1 activator in the modulation of nociceptive pain involving hippocampus and ACC. Here, we provide evidence that GLT-1 activator could be a potential therapeutic utility for the treatment of nociceptive pain.

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 920-66-1. COA of Formula: C3H2F6O.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 2231-57-4, Name is Carbonothioic dihydrazide, molecular formula is CH6N4S. In an article, author is Wang, Yujie,once mentioned of 2231-57-4, Application In Synthesis of Carbonothioic dihydrazide.

A donor-acceptor-donor-type conjugated polymer-modified TiO2 with enhanced photocatalytic activity under simulated sunlight and natural sunlight

A low bandgap donor-acceptor-donor (D-A-D)-type conjugated polymer, poly(3,6-bis(3,4-ethylenedioxythienyl)pyridazine) (poly(EPE)), including 3,4-ethylenedioxythiophene as donor (D) and pyridazine as acceptor (A) units were synthesized. The nanocomposites (poly(EPE)/TiO2) of D-A-D-type conjugated polymer and TiO2 with different weight percentage of poly(EPE) were successfully prepared by an in situ chemical oxidative polymerization method. The structure and morphology of nanocomposites were investigated by Fourier transform infrared spectroscopy, UV-Vis diffuse reflectance spectra (UV-Vis/DRS), scanning electron microscopy images and transmission electron microscopy images. The structural and morphological studies revealed that the poly(EPE) was entrapped in the TiO2 nanoparticles. The photocatalytic activities of nanocomposites were measured by the photodegradation of methyl orange (MO) aqueous solutions under simulated sunlight and natural sunlight irradiation, respectively. The pseudo-first-order kinetic constants of photocatalytic degradation of MO under simulated sunlight and natural sunlight irradiation with 8 wt% poly(EPE)/TiO2 were 4.39 and 4.04 times as great as that of pure TiO2, respectively, exhibiting greater photocatalytic performance.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. COA of Formula: C7H6F3N, 88-17-5, Name is 2-(Trifluoromethyl)aniline, SMILES is NC1=CC=CC=C1C(F)(F)F, in an article , author is Zierkiewicz, Wiktor, once mentioned of 88-17-5.

S center dot center dot center dot N chalcogen bonded complexes of carbon disulfide with diazines. Theoretical study

Carbon disulfide complexes with diazine (pyridazine, pyrimidine or pyrazine) have been studied by density functional BLYP-D3 and ab initio CCSD(T) methods. All possible conformers of these complexes have been found. In the chalcogen bonded complexes, the CCSD(T)/cc-pvtz calculated interaction energies (Delta E) range between -0.89 and -2.19 kcal mol(-1). These complexes are more stable than those stabilized by hydrogen bond. The linear correlation between the DE and the most negative values of the electrostatic potential surfaces (V-s,V-min) on the nitrogen atom of the diazines has been found. According to the symmetry- adapted perturbation theory (SAPT) analysis, in the chalcogen bonded complexes among all of the attraction forces the electrostatic component is the most important one, while in the hydrogen bonded and stacking complexes the dispersion contribution is the leading term. Moreover, the Natural Bond Orbitals (NBO), AIM and Noncovalent Interaction Index (NCI) analyses have been performed. (C) 2017 Elsevier B. V. All rights reserved.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 88-17-5, you can contact me at any time and look forward to more communication. COA of Formula: C7H6F3N.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 50681-25-9, Name is 4-Pyridazinecarboxylic Acid, molecular formula is C5H4N2O2. In an article, author is Yengoyan, Aleksandr P.,once mentioned of 50681-25-9, SDS of cas: 50681-25-9.

Synthesis and Preliminary Biological Properties Assessment of Novel 2-S-, 4, 5-Substituted and Bicyclic Derivatives of 6-Methylpyrimidine-4-ol

A series of novel 2-S-, 4-, 5-substituted and bicyclic 6-methylpyrimidine-4-ol derivatives including pyrazole, 1,2,4-triazole and pyridazine moieties in the molecule were synthesized by accessible and efficient methods. Thiopyrazolyl derivatives were obtained from 2-mercapto-6-methylpyrimidin-4-ol. 4-Triazolyl and 4-aminotriazolylpyrimidines were synthesized from the quaternary ammonium salt of pyrimidine and 4-chloro-substituted 2-thiomethyl-6-methylpyrimidine, respectively. The reaction of potassium salt of 1-methyl-6-oxo-1,6-dihydropyridazin-3-ole with ethyl 2-chloro-3-oxobutanoate and subsequent treatment with thiourea led to 6-((4-hydroxy-2-mercapto-6-methylpyrimidin-5-yl)oxy)-2-methylpyridazin-3 (2H)-one. The reaction product of the latter with 3-chloropentan-2,4-dione was subjected to heterocyclization, which afforded the target bicyclic derivative of pyrimidine. The synthesized compounds showed a pronounced stimulating action on plants growth. Their growth stimulant activities were in the range of 60-93% compared to heteroauxin.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Chemistry, like all the natural sciences, Product Details of 2231-57-4, begins with the direct observation of nature¡ª in this case, of matter.2231-57-4, Name is Carbonothioic dihydrazide, SMILES is NNC(NN)=S, belongs to pyridazines compound. In a document, author is Telo, Joao P., introduce the new discover.

Mixed valence radical anions of 4,4 ”-dinitro-p-terphenyl and its aza derivatives as models for electronic communication in conducting polymers

Cyclic voltanunetry, UV/Vis/NIR spectroscopy, EPR spectroscopy and theoretical calculations were used to study the mixed valence radical anions of 4,4 ”-dinitro-p-therphenyl (2), of 3,6-bis(4-nitrophenyl)-1,2-diazine (3) and of 2,5-bis(4-nitrophenyl)-1,4-diazine (4) as models to understand the effect of the structural changes on the conductivity of poly-p-phenylene polymers. All the results show an increase of the electronic communication between nitro groups in the order 2 < 3 < 4. Substitution of CH units by nitrogen atoms in the central aromatic ring lowers the reduction potential of the bridge, increasing the electronic coupling through the triaryl bridge and the rate of intramolecular electron transfer in the same order. Additionally, calculations show that the 1,2-diazine ring of 3, and specially the 1,4-diazine ring of 4, allow a higher planarity of the molecule by decreasing the steric strain between rings, which also increases the conjugation through the bridge. The results suggest that incorporating pyrazine (1,4-diazine) and pyridazine (1,2-diazine) units in poly-p-phenylene polymers should enhance the electronic properties of these conducting polymers. 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 2231-57-4. Product Details of 2231-57-4.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Electric Literature of 920-66-1, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 920-66-1, Name is 1,1,1,3,3,3-Hexafluoropropan-2-ol, SMILES is OC(C(F)(F)F)C(F)(F)F, belongs to pyridazines compound. In a article, author is Khalifa, Mohamed E., introduce new discover of the category.

Biological screening and assessment of certain substituted monoazo heterocycles containing sulphur and / or nitrogen and their seleno like moieties

The monoazo substituted five membered heterocycles, along with their seleno like moieties are still of interest in organic chemistry due to their medicinal and valuable applications. In continuation of our interest in the study of heterocyclic azo compounds containing sulphur and / or nitrogen heteroatoms, the synthesis of 5-aryl mono azo-thiazol-2-ylcarbamoyl-thiophene along with their seleno like derivatives of pyridine, pyridazine and quinolone, were accomplished. All the synthesized compounds were in vitro screening of their antioxidant activity, antitumor activity against Ehrlich ascites carcinoma cell EACC cell line and antimicrobial activity against various pathogenic microorganisms, such as Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) and Gram-negative bacteria (Escherichia coli and Salmonella typhimurium) and fungi strains of Aspergillus flavus and Candida albicans. The structural-activity relationship was studied based on the obtained data.

Electric Literature of 920-66-1, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 920-66-1 is helpful to your research.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

In an article, author is Daoui, Said, once mentioned the application of 920-66-1, Safety of 1,1,1,3,3,3-Hexafluoropropan-2-ol, Name is 1,1,1,3,3,3-Hexafluoropropan-2-ol, molecular formula is C3H2F6O, molecular weight is 168.0378, MDL number is MFCD00011651, category is pyridazines. Now introduce a scientific discovery about this category.

Crystal structure and Hirshfeld surface analysis of 4-(4-methylbenzyl)-6-phenylpyridazin-3(2H)-one

In this paper, we describe the synthesis of a new dihydro-2H-pyridazin-3-one derivative. The molecule, C18H16N2O, is not planar; the benzene and pyridazine rings are twisted with respect to each other, making a dihedral angle of 11.47 (2)degrees, and the toluene ring is nearly perpendicular to the pyridazine ring, with a dihedral angle of 89.624 (1)degrees. The molecular conformation is stabilized by weak intramolecular C-H center dot center dot center dot N contacts. In the crystal, pairs of N-H center dot center dot center dot O hydrogen bonds link the molecules into inversion dimers with an R-2(2) (8) ring motif. The intermolecular interactions were investigated using Hirshfeld surface analysis and two-dimensional (2D) fingerprint plots, revealing that the most important contributions for the crystal packing are from CH center dot center dot center dot H (56.6%), H center dot center dot center dot C/C H (22.6%), O center dot center dot center dot H/H center dot center dot center dot O (10.0%) and N center dot center dot center dot C/C center dot center dot center dot N (3.5%) interactions.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 110-03-2, Name is 2,5-Dimethyl-2,5-hexanediol, SMILES is CC(C)(O)CCC(C)(C)O, in an article , author is Shainova, Roza S., once mentioned of 110-03-2, Formula: C8H18O2.

Synthesis and biological properties of novel 3-(pyrazol-1-yl)-6-oxopyridazine derivatives

The affordable and efficient methods for the syntheses of acyclic derivatives of 2-(3-(3,5-dimethyl-1H-pyrazol-1-yl)-6-oxopyridazin-1(6H)-yl)acetohydrazine as well as compounds with a combination of pyrazolyl-pyridazine fragment with various azoles in the molecules have been developed. The synthesized compounds showed a stimulating action on plant growth.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 455-24-3, Name is 4-(Trifluoromethyl)benzoic acid, molecular formula is C8H5F3O2. In an article, author is Kawano, Motoharu,once mentioned of 455-24-3, HPLC of Formula: C8H5F3O2.

ENHANCEMENT OF AMORPHOUS SILICA DISSOLUTION BY INTERACTION WITH SIX-MEMBERED RING HETEROCYCLIC COMPOUNDS

Six-membered ring heterocyclic compounds are widely present in the Earth’s surface environments as biological organic molecules composed of soil organic matter including plant and microbial residues, while little is known about their effect on the dissolution of silicate minerals including amorphous silica. To evaluate the effect of these biological molecules on amorphous silica dissolution, dissolution experiments were carried out by the flow-through method using 0.1 g of amorphous silica and 0.1 mM NaCl electrolyte solutions containing 0.0, 0.1, 1.0, or 10.0 mM of the heterocyclic compounds, piperidine (pK = 11.12), pyridine (pK = 5.25), or pyridazine (pK = 2.33), at a pH of 6, 5, or 4. Additionally, adsorption experiments of the compounds on the amorphous silica surface were performed to confirm the adsorption affinity for the amorphous silica surface. The results demonstrated that these heterocyclic compounds enhance the dissolution rate of amorphous silica in the following order: piperidine > pyridine > pyridazine. When 10.0 mM solutions were used, the heterocyclic compounds enhanced greatly the dissolution rate up to enhancement factors of 6.0 to similar to 14.8, 5.0 to similar to 14.0, and 1.0 to similar to 2.6 through an interaction of piperidine, pyridine, and pyridazine, respectively, in the pH range of approximately 6 to similar to 4. The adsorption experiments indicated that the heterocyclic compounds exhibited significant adsorption affinity for the amorphous silica surface as follows: piperidine > pyridine > pyridazine, which was consistent with the order of their effects on the dissolution enhancement. The geochemical calculation revealed that this order of enhancement was in good agreement with the concentrations of cationic species of heterocyclic compounds at corresponding pH conditions. Consequently, the enhancement of amorphous silica dissolution is likely to be influenced by the electrostatic complexation of the cationic species of the heterocyclic compounds with the negative >SiO- sites on the amorphous silica surface.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem