Month: February 2023

Development of validated stability indicating RP-HPLC method for simultaneous estimation of amlodipine besylate and candesartan cilexetil from tablet was written by Padole, Y. F.;Rabade, S. K.;Jirvankar, P. S.;Umekar, M. J.;Lohiya, R. T.. And the article was included in World Journal of Pharmaceutical Research in 2021.Category: imidazoles-derivatives This article mentions the following:

A simple, isocratic, rapid and accurate reversed phase high performance liquid chromatog. method was developed for the quant. determination of Candesartan Cilexetil and Amlodipine Besylate tablets. The chromatog. separation was achieved on Water Xterra R18, 150×4.6 mm, 3.5u (C18) using Mobile Phase A : ACN: Water: OPA (950:50:01) and Mobile Phase B: ACN: Water: OPA (50:950:01), and the 位_max of Amlodipine Besylate was detected at 237nm, where Candesartan Cilexetil exhibits sufficient absorbance at 254 nm. The linear range for Candesartan Cilexetil and Amlodipine Besylate were (2.8-42ppm) and (6.4-96) was obtained with correlation coefficients 鈮?.999 for each analyte. The retention time were found to be 4.2 and 8.5 min Candesartan Cilexetil and Amlodipine Besylate resp. Candesartan Cilexetil and Amlodipine Besylate was subjected to stress conditions (hydrolysis (acid, base) oxidation, photolysis, thermal degradation and humidity degradation) and the stressed samples were analyzed by use of the method. The major degradation was observed in base and minor in acid, thermal, oxidation, humidity and photolysis. The forced degradation studies prove the stability indicating power of the method. In the experiment, the researchers used many compounds, for example, 1-(((Cyclohexyloxy)carbonyl)oxy)ethyl 1-((2′-(2H-tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate (cas: 145040-37-5Category: imidazoles-derivatives).

1-(((Cyclohexyloxy)carbonyl)oxy)ethyl 1-((2′-(2H-tetrazol-5-yl)-[1,1′-biphenyl]-4-yl)methyl)-2-ethoxy-1H-benzo[d]imidazole-7-carboxylate (cas: 145040-37-5) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.Category: imidazoles-derivatives

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Release of nitrite from the antitubercular nitroimidazole drug PA-824 and analogues upon one-electron reduction in protic, non-aqueous solvent was written by Maroz, Andrej;Shinde, Sujata S.;Franzblau, Scott G.;Ma, Zhenkun;Denny, William A.;Palmer, Brian D.;Anderson, Robert F.. And the article was included in Organic & Biomolecular Chemistry in 2010.Reference of 3034-41-1 This article mentions the following:

The one-electron reduction chem. of the antituberculosis drug PA-824, together with a series of closely related compounds, has been investigated in irradiated anaerobic propan-2-ol solution The protic solvent, of low dielec. constant, was chosen to mimic the environment of a water-restricting active site of a model protein, which is capable of reducing the compounds Radiolytic reduction of the compounds containing electron donating substituents in the 2-position of the imidazole ring released nitrite, with compounds that are highly active against Mycobacterium tuberculosis exhibiting high yields of nitrite. The release of cytotoxic reactive nitrogen species through a one-electron pathway, by as yet unidentified proteins, may play a role in the activity of this class of compounds against TB. The described radiolytic quantification of nitrite release may have utility as a preliminary screening test for nitroarom. candidate drugs against the disease. In the experiment, the researchers used many compounds, for example, 1-Methyl-4-nitroimidazole (cas: 3034-41-1Reference of 3034-41-1).

1-Methyl-4-nitroimidazole (cas: 3034-41-1) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.Reference of 3034-41-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Evaluations of imidazolium ionic liquids as novel skin permeation enhancers for drug transdermal delivery was written by Zhang, Ding;Wang, Huai-Ji;Cui, Xiu-Ming;Wang, Cheng-Xiao. And the article was included in Pharmaceutical Development and Technology in 2017.Category: imidazoles-derivatives This article mentions the following:

In this work, imidazolium ionic liquids (imidazolium ILs) were employed as the novel chem. permeation enhancers (CPEs) and their performances and mechanisms of action were deeply investigated. Testosterone was used as a model drug to investigate the transdermal delivery enhancement of twenty imdidazolium ILs. The results suggested that the promotion activity connected to the structure and composition of the ILs. The quant. structure-activity relationship (QSAR) model revealed a good linearity between the electronic properties of ILs and their enhancements. Furthermore, the transepidermal water loss (TEWL) and scanning laser confocal microscope (CLSM) examinations showed the strong improvement of ILs on skin barrier permeability, which were well correlated with the drug penetration profiles. The total reflection-Fourier transform IR spectroscopy (ATR-FTIR) and at. force microscope (AFM) evaluations of skins indicated that the ILs can disrupt the regular and compact arrangements of the corneocytes, change the surface properties of stratum corneum, and make the skin structure more permeable. Our work demonstrated the significant skin permeation promotion profiles of the imidazolium ILs, which are of great potential in transdermal drug delivery systems. In the experiment, the researchers used many compounds, for example, 1-Methyl-1H-imidazol-3-ium chloride (cas: 35487-17-3Category: imidazoles-derivatives).

1-Methyl-1H-imidazol-3-ium chloride (cas: 35487-17-3) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. The pharmacophore of imidazole exists in bioactive compounds including amino acids, plant growth regulators and therapeutic agents.n increase of the alkyl chain length of the alcohols. Category: imidazoles-derivatives

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

New (E)-1-alkyl-1H-benzo[d]imidazol-2-yl)methylene)indolin-2-ones: Synthesis, in vitro cytotoxicity evaluation and apoptosis inducing studies was written by Sharma, Pankaj;Thummuri, Dinesh;Reddy, T. Srinivasa;Senwar, Kishna Ram;Naidu, V. G. M.;Srinivasulu, Gannoju;Bharghava, Suresh K.;Shankaraiah, Nagula. And the article was included in European Journal of Medicinal Chemistry in 2016.Recommanded Product: 1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde This article mentions the following:

A new series of (E)-[(benzo[d]imidazol-2-yl)methylene]indolin-2-one derivatives has been synthesized and evaluated for their in vitro cytotoxic activity against a panel of selected human cancer cell lines of prostate (PC-3 and DU-145) and breast (BT-549, MDA-MB-231, MCF-7, 4T1), non-small lung (A549) and gastric (HGC) cancer cells along with normal breast epithelial cells (MCF10A). Among the tested compounds, 8l (I) showed significant cytotoxic activity against MDA-MB-231 and 4T1 cancer cells with IC₅₀ values of 3.26 卤 0.24 渭M and 5.96 卤 0.67 渭M resp. The compounds 8f (II), 8i (III), 8l (I) and 8o (IV) were also screened on normal human breast epithelial cells (MCF10A) and found to be safer with lesser cytotoxicity. The treatment of MDA-MB-231 cells with 8l led to inhibition of cell migration ability through disruption of F-actin protein assembly. The flow-cytometry anal. reveals that the cells arrested in G0/G1 phase of the cell cycle. Further, the compound 8l induced apoptosis of MDA-MB-231 cells was characterized by different staining techniques such as Acridine Orange/Ethidium Bromide (AO/EB), DAPI, annexin V-FITC/PI, Rhodamine-123 and MitoSOX red assay. Western blot studies demonstrated that the compound 8l treatment led to activation of caspase-3, increased expression of cleaved PARP, increased expression of pro-apoptotic Bax and decreased expression of anti-apoptotic Bcl-2 in MDA-MB-231 cancer cells. In the experiment, the researchers used many compounds, for example, 1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4Recommanded Product: 1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde).

1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde (cas: 3012-80-4) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Recommanded Product: 1-Methyl-1H-benzo[d]imidazole-2-carbaldehyde

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Nanocage formation and structural anomalies in imidazolium ionic liquid glasses governed by alkyl chains of cations was written by Bakulina, Olga D.;Ivanov, Mikhail Yu.;Prikhod’ko, Sergey A.;Pylaeva, Svetlana;Zaytseva, Irina V.;Surovtsev, Nikolay V.;Adonin, Nicolay Yu.;Fedin, Matvey V.. And the article was included in Nanoscale in 2020.Synthetic Route of C7H13ClN2 This article mentions the following:

Intriguing nanostructuring anomalies have been recently observed in imidazolium ionic liquids (ILs) near their glass transition points, where local d. around a nanocaged solute progressively grows up with temperature Herewith, we for the first time demonstrate exptl. and theor., that these anomalies are governed by alkyl chains of cations and crucially depend on their length. ESR spectroscopy on a series of ILs [C_nmim]BF₄ (n = 0-12) shows that only the chains with n = 3-10 favor anomaly. Moreover, remarkable even vs. odd n peculiarities were systematically observed Finally, similar anomaly was for the first time observed for a non-IL glass of di-Bu phthalate, which structurally mimics cations of imidazolium ILs. Therefore, such anomalous d. behavior in a glassy state nanocage goes far beyond ILs and proves to be a more general phenomenon, which can be structurally tuned and rationally adjusted for various potential applications in nanoscale materials. In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8Synthetic Route of C7H13ClN2).

1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. This ring system is present in important biological building blocks, such as histidine and the related hormone histamine.Synthetic Route of C7H13ClN2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Systematic estimation and interpretation of fractional free volume in 1-alkyl-3-methylimidazolium-based ionic liquids was written by Endo, Takatsugu;Nishisaka, Yuji;Kin, Youn;Kimura, Yoshifumi. And the article was included in Fluid Phase Equilibria in 2019.Quality Control of 3-Dodecyl-1-methyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide This article mentions the following:

With the aim of providing a plausible explanation for fractional free volume (FFV) behavior in ionic liquids (ILs) such as 1-alkyl-3-methylimidazolium-based cations paired with common anions like [BF₄]^–, [PF₆]^–, and bis(trifluoromethane)sulfonamide ([NTf₂]^–), we comprehensively estimated the van der Waals volume of the ions and subsequently determined the FFV behavior present within these liquids with the aid of quantum chem. calculations Unlike the values seen in previous studies, our results showed an increase in the FFV character of the IL under investigation when either the cations alkyl chain was lengthened and/or the size of the anion was expanded. The sizes of cations and anions present in the IL were shown to affect the FFV values in different ways: whereas the effect of the anions size could be accounted for by looking at changes in the Coulomb interaction between cations and anions in the polar (charge localized) domains, the effect exerted by the alkyl chain was found to be related to the alkyl chains dependence on the FFV obtained for alkanes due to the introduction of non-polar (alkyl group aggregated) domains to ILs with increasing alkyl chain lengths. An empirical equation was proposed in order to calculate FFV values for alkyl-imidazolium-based ILs. In the experiment, the researchers used many compounds, for example, 3-Dodecyl-1-methyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide (cas: 404001-48-5Quality Control of 3-Dodecyl-1-methyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide).

3-Dodecyl-1-methyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide (cas: 404001-48-5) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Quality Control of 3-Dodecyl-1-methyl-1H-imidazol-3-ium bis((trifluoromethyl)sulfonyl)amide

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Room-temperature silver-containing liquid metal salts with nitrate anions was written by Schaltin, Stijn;Brooks, Neil R.;Sniekers, Jeroen;Depuydt, Daphne;Van Meervelt, Luc;Binnemans, Koen;Fransaer, Jan. And the article was included in Physical Chemistry Chemical Physics in 2013.Reference of 21252-69-7 This article mentions the following:

The synthesis, structural, thermal and electrochem. properties of F-free Ag-containing ionic liquids are presented. The ionic liquid cations are formed by a Ag(I) ion surrounded by two 1-alkylimidazole ligands, with the counteranions being nitrate ions. Depending on the alkyl chain length, the complexes are liquids at room temperature or melting slightly above this. For the solid compounds it was possible to elucidate the structure by single crystal x-ray anal. The ionic liquids are electroactive, have good mass transport properties and can be used for the electrodeposition of Ag at high current densities. The thermal properties and stability of these compounds were tested by DSC and TGA. The viscosity of the ionic liquids follows a Vogel-Tamman-Fulcher relation as a function of temperature The electrochem. properties of the complexes were tested by cyclic voltammetry and the resulting electrodeposits were examined using SEM and at. force microscopy. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Reference of 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.Reference of 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Imidazolium Based Ionic Liquids: Impact of the Cation Symmetry and Alkyl Chain Length on the Enthalpy of Vaporization was written by Yermalayeu, Andrei V.;Zaitsau, Dzmitry H.;Loor, Manuel;Schaumann, Julian;Emel’yanenko, Vladimir N.;Schulz, Stephan;Verevkin, Sergey P.. And the article was included in Zeitschrift fuer Anorganische und Allgemeine Chemie in 2017.Synthetic Route of C11H20N2 This article mentions the following:

The vaporization thermodn. of sym. imidazolium based ionic liquids of the general formula [C_nC_nIm][Br] with the chains length n = 4, 5, 6, and 8 were investigated using a combination of DSC, TGA, and QCM methods with quantum chem. calculations Comparison of vaporization enthalpies for the sym. ([C_nC_nIm][Br]) and asym. imidazolium based ILs ([C_nmim][Br]) revealed a general trend with the lower vaporization enthalpies of the sym. species indicating a significant decrease of the Coulombic interactions affecting energetics of vaporization. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Synthetic Route of C11H20N2).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).Synthetic Route of C11H20N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Influence of the Surface Chemistry of Metal-Organic Polyhedra in Their Assembly into Ultrathin Films for Gas Separation was written by Tejedor, Ines;Andres, Miguel A.;Carne-Sanchez, Arnau;Arjona, Monica;Perez-Miana, Marta;Sanchez-Lainez, Javier;Coronas, Joaquin;Fontaine, Philippe;Goldmann, Michel;Roubeau, Olivier;Maspoch, Daniel;Gascon, Ignacio. And the article was included in ACS Applied Materials & Interfaces in 2022.Formula: C11H20N2 This article mentions the following:

The formation of ultrathin films of Rh-based porous metal-organic polyhedra (Rh-MOPs) by the Langmuir-Blodgett method has been explored. Homogeneous and dense monolayer films were formed at the air-water interface either using two different coordinatively alkyl-functionalized Rh-MOPs (HRhMOP(diz)₁₂ and HRhMOP(oiz)₁₂) or by in situ incorporation of aliphatic chains to the axial sites of dirhodium paddlewheels of another Rh-MOP (OHRhMOP) at the air-liquid interface. All these Rh-MOP monolayers were successively deposited onto different substrates in order to obtain multilayer films with controllable thicknesses. Aliphatic chains were partially removed from HRhMOP(diz)₁₂ films post-synthetically by a simple acid treatment, resulting in a relevant modification of the film hydrophobicity. Moreover, the CO₂/N₂ separation performance of Rh-MOP-supported membranes was also evaluated, proving that they can be used as selective layers for efficient CO₂ separation In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Formula: C11H20N2).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole has become an important synthon in the development of new drugs. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Formula: C11H20N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Proton nuclear magnetic resonance spectra of aryl and mono- and disubstituted N-methylazoles was written by Butler, Richard Noel. And the article was included in Canadian Journal of Chemistry in 1973.Recommanded Product: 3034-41-1 This article mentions the following:

Proton NMR spectra of substituted azoles, e.g., methylpyrrole, imidazoles, pyrazoles, etc., are compared. The influence of the azole ring on the chem. shifts of phenyl protons is discussed. A correlation between N-Me chem. shifts and the structural characteristics of the N-Me group in mono- and disubstituted azoles is noted. In the experiment, the researchers used many compounds, for example, 1-Methyl-4-nitroimidazole (cas: 3034-41-1Recommanded Product: 3034-41-1).

1-Methyl-4-nitroimidazole (cas: 3034-41-1) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).Recommanded Product: 3034-41-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem