Day: October 15, 2021

An article Improved Antioxidant and Antifungal Activity of Chitosan Derivatives Bearing Urea Groups WOS:000505836700001 published article about IN-VITRO; ENHANCED ANTIOXIDANT; ANTIBACTERIAL; COMPLEXES in [Zhang, Jingjing; Mi, Yingqi; Sun, Xueqi; Chen, Yuan; Miao, Qin; Tan, Wenqiang; Li, Qing; Dong, Fang; Guo, Zhanyong] Chinese Acad Sci, Key Lab Coastal Biol & Bioresource Utilizat, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Zhang, Jingjing; Mi, Yingqi; Sun, Xueqi; Chen, Yuan; Miao, Qin; Tan, Wenqiang; Li, Qing; Dong, Fang; Guo, Zhanyong] Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China; [Zhang, Jingjing; Mi, Yingqi; Sun, Xueqi; Chen, Yuan; Guo, Zhanyong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China in 2020.0, Cited 38.0. The Name is 1H-1,2,4-Triazol-5-amine. Through research, I have a further understanding and discovery of 61-82-5. HPLC of Formula: C2H4N4

Eight novel chitosan derivatives bearing urea groups are designed and synthesized. Fourier transform infrared spectroscopy, H-1 nuclear magnetic resonance spectrometer, and elemental analysis are performed to confirm the structural characteristics of chitosan derivatives. The antioxidant activities, including superoxide radicals’ scavenging activity, 1,1-diphenyl-2-picrylhydrazyl radicals’ scavenging activity, and hydroxyl radical’ scavenging activity, of the derivatives are explored within different concentrations in the reaction system. In vitro fungicidal activity of these compounds is further tested against Fusarium oxysporum f. sp. niveum, Phomopsis asparagus, F. oxysporum f. sp. cucumebrium Owen, and Botrytis cinerea, respectively, particularly compounds exhibit significant control effect at 1.0 mg mL(-1). The experimental results indicate that the products bearing urea groups show enhanced antifungal property and antioxidant activity compared with pristine chitosan. Meanwhile, their bioactivities follow some regularity on the whole, that is, they are related to the electron-withdrawing property of the different substituted groups of urea. Derivatives with stronger electron-withdrawing property will have higher biological activities. L929 cells are used to carry out cytotoxicity test of chitosan and chitosan derivatives by Cell Counting Kit-8 assay. The results indicate that some of the samples show low cytotoxicity. This research will be helpful to broaden the application of chitosan in materials.

About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Zhang, JJ; Mi, YQ; Sun, XQ; Chen, Y; Miao, Q; Tan, WQ; Li, Q; Dong, F; Guo, ZY or concate me.. HPLC of Formula: C2H4N4

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Category: Triazoles. Authors Ben Ali, A; El Bakri, Y; Lai, CH; Sebhaoui, J; El Ghayati, L; Essassi, E; Mague, JT in INT UNION CRYSTALLOGRAPHY published article about in [Ben Ali, Abdelkader] Mohammed V Univ Rabat, Fac Sci, Ctr Sci Mat, Lab Chim Appl Mat, Ave Ibn,BP 1014, Rabat, Morocco; [El Bakri, Youness; Sebhaoui, Jihad; El Ghayati, Lhoussaine; Essassi, El Mokhtar] Univ Mohammed 5, Fac Sci, Ctr Rech Sci Med, URAC 21,Pole Competence Pharmacochim, Av Ibn Battouta,BP 1014, Rabat, Morocco; [Lai, Chin-Hung] Chung Shan Med Univ, Dept Med Appl Chem, Taichung 40241, Taiwan; [Lai, Chin-Hung] Chung Shan Med Univ Hosp, Dept Med Educ, Taichung 40241, Taiwan; [Mague, Joel T.] Tulane Univ, Dept Chem, New Orleans, LA 70118 USA in 2019.0, Cited 38.0. The Name is 1H-1,2,4-Triazol-5-amine. Through research, I have a further understanding and discovery of 61-82-5

In the title molecule, C13H16N4O3, the mean planes of the phenyl and triazole rings are nearly perpendicular to one another as a result of the intramolecular C-H center dot center dot center dot O and C-H center dot center dot center dot pi(ring) interactions. In the crystal, layers parallel to (101) are generated by O-H center dot center dot center dot N, N-H center dot center dot center dot O and N-H center dot center dot center dot N hydrogen bonds. The layers are connected by inversion-related pairs of C-H center dot center dot center dot O hydrogen bonds. The experimental molecular structure is close to the gas-phase geometryoptimized structure calculated by DFT methods. Hirshfeld surface analysis indicates that the most important interaction involving hydrogen in the title compound is the H center dot center dot center dot H contact. The contribution of the H center dot center dot center dot O, H center dot center dot center dot N, and H center dot center dot center dot H contacts are 13.6, 16.1, and 54.6%, respectively.

Category: Triazoles. About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Ben Ali, A; El Bakri, Y; Lai, CH; Sebhaoui, J; El Ghayati, L; Essassi, E; Mague, JT or concate me.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Quality Control of 1H-1,2,4-Triazol-5-amine. Authors Polunin, KE; Ul’yanov, AV; Polunina, IA; Buryak, AK in MAIK NAUKA/INTERPERIODICA/SPRINGER published article about in [Polunin, K. E.; Ul’yanov, A. V.; Polunina, I. A.; Buryak, A. K.] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia in 2021.0, Cited 21.0. The Name is 1H-1,2,4-Triazol-5-amine. Through research, I have a further understanding and discovery of 61-82-5

The construction materials that contacted with unsymmetrical dimethylhydrazine and the desorption solutions obtained when treating the contaminated surface of metals and alloys with water and reagents were studied by chromatography and mass spectrometry. Neutralization of unsymmetrical dimethylhydrazine was studied using ozone and shungite. Ozonation makes it possible to destroy the toxicant molecules chemically and physically adsorbed on the surface of metal constructions, due to which they can be reused and utilized. Shungite effectively adsorbs and catalytically decomposes not only unsymmetrical dimethylhydrazine and its transformation products, but also oligomer compounds formed during the storage of hydrazine fuel. Ozonation of spent shungite can increase the efficiency of destructive processes and completeness of its regeneration.

Quality Control of 1H-1,2,4-Triazol-5-amine. About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Polunin, KE; Ul’yanov, AV; Polunina, IA; Buryak, AK or concate me.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Recommanded Product: 61-82-5. In 2020.0 TURK J CHEM published article about IONIC LIQUIDS; CATALYST; GREEN; ACID in [Ghaffari Khaligh, Nader; Shahnavaz, Zohreh; Rafie Johan, Mohd] Univ Malaya, Nanotechnol & Catalysis Res Ctr, Inst Postgrad Studies, Kuala Lumpur, Malaysia; [Mihankhah, Taraneh] Iran Univ Sci & Technol, Dept Water & Environm Engn, Tehran, Iran; [Titinchi, Salam] Univ Western Cape, Dept Chem, Cape Town, South Africa in 2020.0, Cited 22.0. The Name is 1H-1,2,4-Triazol-5-amine. Through research, I have a further understanding and discovery of 61-82-5.

This work introduces a new additive named 4,4′-trimethylenedipiperidine for the practical and ecofriendly preparation of ethyl 5-amino-7-(4-phenyl)-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate derivatives. This chemical is commercially available and easy to handle. It also possesses a low melting point and a broad liquid range temperature, high thermal stability, and good solubility in water. Based on green chemistry principles, the reaction was performed in a) a mixture of green solvents i.e. water and ethanol (1:1 v/v) at reflux temperature, and b) the additive was liquefied at 65 degrees C and the reaction was conducted in the liquid state of the additive. High yields of the desired triazolo-pyrimidines were obtained under both aforementioned conditions. Our results demonstrated that this additive, containing 2 Lewis base sites and able to act as an acceptor-donor hydrogen bonding group, is a novel and efficient alternative to piperidine, owing to its unique properties such as its reduced toxicity, nonflammable nature, nonvolatile state, broad liquid range temperature, high thermal stability, and ability to be safely handled. Furthermore, this additive could be completely recovered and exhibited high recyclability without any change in its chemical structure and no significant reduction in its activity. The current methodology has several advantages: (a) it avoids the use of hazardous materials, as well as toxic, volatile, and flammable solvents, (b) it does not entail tedious processes, harsh conditions, and the multistep preparation of catalysts, (c) it uses a metal-free and noncorrosive catalyst, and (d) reduces the generation of hazardous waste and simple work-up processes. The most important result of this study is that 4,4′-trimethylenedipiperidine can be a promising alternative for toxic, volatile, and flammable base reagents in organic synthesis owing to its unique properties.

Recommanded Product: 61-82-5. About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Ghaffari Khaligh, N; Mihankhah, T; Titinchi, S; Shahnavaz, Z; Rafie Johan, M or concate me.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Product Details of 61-82-5. Recently I am researching about HYDROGEN-PEROXIDE; INDUCED APOPTOSIS; OXIDATIVE STRESS; H2O2-INDUCED APOPTOSIS; SIGNAL-TRANSDUCTION; PC12 CELLS; DEATH; ACTIVATION; ACID; ACATALASEMIA, Saw an article supported by the JC Bose National fellowship [SB/SE/JCB-017/2015]. Published in SPRINGER/PLENUM PUBLISHERS in NEW YORK ,Authors: Nagarkoti, S; Dubey, M; Sadaf, S; Awasthi, D; Chandra, T; Jagavelu, K; Kumar, S; Dikshit, M. The CAS is 61-82-5. Through research, I have a further understanding and discovery of 1H-1,2,4-Triazol-5-amine

Neutrophil survival and oxidative stress during inflammatory conditions are linked to tissue damage. The present study explores less understood role of catalase, the enzyme catalysing hydrogen peroxide decomposition, in neutrophil survival/death. Importantly, inhibition of catalase activity following S-glutathionylation in the PMA, NO, or zymosan-activated neutrophils or treatment with catalase inhibitor led to neutrophil death. On the contrary, introducing reducing environment by TCEP rescued catalase activity and significantly improved neutrophil survival. Furthermore, augmentation in ROS generation by NOX-2 activation or induction of mitochondrial ROS by Antimycin-A induced catalase S-glutathionylation and cell death, which was prevented in the neutrophil cytosolic factor1 (NCF-1-/-) cells or was rescued by MitoTEMPO, a mitochondrial ROS scavenger, thus, suggesting a correlation between catalase S-glutathionylation/activity inhibition and reduced neutrophil survival. Altogether, enhanced NOX2 activation/mitochondrial dysfunction led to reduced survival of human and mice neutrophils, due to H2O2 accumulation, S-glutathionylation of catalase, and reduction in its enzymatic activity. The present study thus demonstrated mitigation of catalase activity under oxidative stress-impacted neutrophil survival.

Product Details of 61-82-5. About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Nagarkoti, S; Dubey, M; Sadaf, S; Awasthi, D; Chandra, T; Jagavelu, K; Kumar, S; Dikshit, M or concate me.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

COA of Formula: C2H4N4. Zhang, HD; Lai, HS; Wu, XR; Li, GK; Hu, YF in [Zhang, Huadong; Lai, Huasheng; Wu, Xiangrong; Li, Gongke; Hu, Yufei] Sun Yat Sen Univ, Sch Chem, Guangzhou 510275, Peoples R China published CoFe2O4@HNTs/AuNPs Substrate for Rapid Magnetic Solid-Phase Extraction and Efficient SERS Detection of Complex Samples All-in-One in 2020.0, Cited 60.0. The Name is 1H-1,2,4-Triazol-5-amine. Through research, I have a further understanding and discovery of 61-82-5.

Fast and accurate practical sample detection is a great challenge in on-site detection. Herein, we developed a CoFe2O4@HNTs/ AuNPs substrate for rapid and efficient magnetic solid-phase extraction (MSPE) surface-enhanced Raman scattering (SERS) detection of aromatic amines and nitrofuran in real samples all-in-one. Magnetic CoFe2O4 beads filled inside halloysite nanotubes (HNTs) can avoid aggregation of particles, endow the substrate with the rapid magnetic separation ability to simplify the pretreatment procedure, and reduce complex matrix interference. Meanwhile, outer surface AuNPs can generate electromagnetic enhancement and hot spots to amplify Raman signals of target molecules enriched/concentrated by HNTs. The CoFe2O4@HNTs/AuNPs substrate exhibited excellent SERS activity (high sensitivity, good reproducibility, and repeatability), pH stability (3.0-11.0), and good MSPE ability (fast magnetic enrichment/separation ability within 5 min). The CoFe2O4@HNTs/AuNPs MSPE SERS substrate can be applied for the determination of 4,4′-thioaniline and nitrofurantoin with a linear range of 0.054-21.7 mg/L and 0.05-1.0 mg/L, and the limits of detection were down to 0.026 mg/L and 0.014 mg/L, respectively. Furthermore, the enhancement factor (EF) of the substrate to 4,4′-thioaniline is up to 2.7 x 10(7). Besides, the substrate can realize practical SERS determination of trace 4,4-thioaniline in cosmetics and nitrofurantoin in fish feed and aquatic samples. The recoveries were varied from 71.6% to 103.6% for 4,4-thioaniline in hair dyes and 81.9% to 116.3% for nitrofurantoin in fish feed and aquatic samples, respectively. Such a robust and efficient MSPE SERS substrate possesses great potential in rapid detection (within 15 min) for a practical sample, and it also provides a methodology for the preparation of other HNTs-based composites.

COA of Formula: C2H4N4. About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Zhang, HD; Lai, HS; Wu, XR; Li, GK; Hu, YF or concate me.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Quality Control of 1H-1,2,4-Triazol-5-amine. In 2020.0 CHEMISTRYSELECT published article about CARBOXYLIC-ACID DERIVATIVES; ANTITUMOR AGENTS; ANTIOXIDANT; INHIBITORS; DESIGN; POTENT in [Sompalle, Rajesh; Roopan, Selvaraj Mohana; Priya, Duraipandi Devi; Arunachalapandi, Murugan] Vellore Inst Technol, Sch Adv Sci, Dept Chem, Chem Heterocycles & Nat Prod Res Lab, Vellore 632014, Tamil Nadu, India; [Sompalle, Rajesh] Besant Theosoph Coll, Dept Chem, Chittoor 517325, Andhra Pradesh, India; [Suthindhiran, Krishnamurthy; Sarkar, Gargi] Vellore Inst Technol, Sch Biosci & Technol, Marine Biotechnol & Bioprod Lab, Vellore 632014, Tamil Nadu, India; [Ranjith, Malavika] Vellore Inst Technol, Sch Chem Engn, Vellore 632014, Tamil Nadu, India in 2020.0, Cited 45.0. The Name is 1H-1,2,4-Triazol-5-amine. Through research, I have a further understanding and discovery of 61-82-5.

Microwave synthetic methodologies were proposed for the preparation of positional isomeric dihydro-triazolo-pyrimido-acridines, 3a-j and 9a-h via friedlander synthesis using response surface methodology (RSM). The advantages of these methodologies over conventional methods are it provides good yields with short reaction times. Free radical scavenging and antifungal studies were performed for compounds 3a-j and 9a-h. The results of antioxidant assay revealed that compounds 3c, 3d and 9b exhibited excellent property whereas compounds 3a and 9a showed significant antifungal property against Aspergillus flavus (A.flavus) and Aspergillus niger (A. niger).

About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Sompalle, R; Roopan, SM; Priya, DD; Suthindhiran, K; Sarkar, G; Ranjith, M; Arunachalapandi, M or concate me.. Quality Control of 1H-1,2,4-Triazol-5-amine

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Authors Cardona, B; Rudel, RA in ELSEVIER IRELAND LTD published article about PRENATAL EXPOSURE; CANCER; CHEMICALS; ESTROGEN; ATRAZINE; RODENT; EPIDEMIOLOGY; ORGANIZATION; MALATHION; TOXICITY in [Cardona, Bethsaida; Rudel, Ruthann A.] Silent Spring Inst, Newton, MA 02460 USA in 2020.0, Cited 86.0. Recommanded Product: 1H-1,2,4-Triazol-5-amine. The Name is 1H-1,2,4-Triazol-5-amine. Through research, I have a further understanding and discovery of 61-82-5

Breast cancer risk from pesticides may be missed if effects on mammary gland are not assessed in toxicology studies required for registration. Using US EPA’s registration documents, we identified pesticides that cause mammary tumors or alter development, and evaluated how those findings were considered in risk assessment. Of 28 pesticides that produced mammary tumors, EPA’s risk assessment acknowledges those tumors for nine and dismisses the remaining cases. For five pesticides that alter mammary gland development, the implications for lactation and cancer risk are not assessed. Many of the mammary-active pesticides activate pathways related to endocrine disruption: altering steroid synthesis in H295R cells, activating nuclear receptors, or affecting xenobiotic metabolizing enzymes. Clearer guidelines based on breast cancer biology would strengthen assessment of mammary gland effects, including sensitive histology and hormone measures. Potential cancer risks from several common pesticides should be re-evaluated, including: malathion, triclopyr, atrazine, propylene oxide, and 3-iodo-2-propynyl butylcarbamate (IPBC).

About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Cardona, B; Rudel, RA or concate me.. Recommanded Product: 1H-1,2,4-Triazol-5-amine

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Recently I am researching about METAL-ORGANIC FRAMEWORKS; HIGHLY EFFICIENT; CAPTURE; REMOVAL; MOFS; SORBENTS; HYDROGEN; ZR, Saw an article supported by the R&D Convergence Program of Ministry of Science, ICT and Future Planning, National Research Council of Science Technology [CRC-14-1-KRICT]; Korea Institute of Science and Technology (KIST)Korea Institute of Science & Technology (KIST) [2E28020]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Lee, YR; Do, XH; Cho, KY; Jeong, K; Baek, KY. The CAS is 61-82-5. Through research, I have a further understanding and discovery of 1H-1,2,4-Triazol-5-amine. Category: Triazoles

The efficient removal of radioactive iodine (I-2) has drawn worldwide attention because of the severe effects of radiotoxicity on the environment and human health. As a result, efficient porous materials for the capture and safe storage of radioactive iodine are required. In this work, nanoscale zeolitic imidazolate framework-8 (ZIF-8) and its amino-functionalized ZIF-8 derivatives with 3-amino-1,2,4-triazole (Atz), denoted as ZIF8-A, were prepared via postsynthetic modification, and their performance for I-2 removal from n-hexane was investigated. The abundant amine functionalities in the ZIF8-A structure including the primary and secondary amine groups (-NH2 and -NH) and triazole-ring (-C=N-NH-) not only serve as effective adsorption sites but also form strong interactions with I-2 via electron transfer from the nitrogen atom of the ligand to I-2. The adsorption isotherms and the kinetics were well fitted by the Langmuir model and the pseudo-second-order kinetic model, respectively, suggesting a monolayer chemisorption process. ZIF8-A61 achieved an adsorption capacity of more than 870% compared to the pristine ZIF-8. Based on the experimental and computational results, a plausible mechanism for the adsorption of I-2 on ZIF8-A nanocrystals is proposed by considering the host-guest interactions, specifically, those between the amine functional groups and I-2. In addition, the reusability and structural stability of the adsorbents were investigated.

About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Lee, YR; Do, XH; Cho, KY; Jeong, K; Baek, KY or concate me.. Category: Triazoles

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

I found the field of Science & Technology – Other Topics very interesting. Saw the article Toxicological response of the model fungus Saccharomyces cerevisiae to different concentrations of commercial graphene nanoplatelets published in 2020.0. Quality Control of 1H-1,2,4-Triazol-5-amine, Reprint Addresses Tamayo-Ramos, JA (corresponding author), Univ Burgos, Int Res Ctr Crit Raw Mat ICCRAM, Plaza Misael Banuelos S-N, Burgos 09001, Spain.. The CAS is 61-82-5. Through research, I have a further understanding and discovery of 1H-1,2,4-Triazol-5-amine

Graphene nanomaterials have attracted a great interest during the last years for different applications, but their possible impact on different biological systems remains unclear. Here, an assessment to understand the toxicity of commercial polycarboxylate functionalized graphene nanoplatelets (GN) on the unicellular fungal model Saccharomyces cerevisiae was performed. While cell proliferation was not negatively affected even in the presence of 800 mg L-1 of the nanomaterial for 24 hours, oxidative stress was induced at a lower concentration (160 mg L-1), after short exposure periods (2 and 4 hours). No DNA damage was observed under a comet assay analysis under the studied conditions. In addition, to pinpoint the molecular mechanisms behind the early oxidative damage induced by GN and to identify possible toxicity pathways, the transcriptome of S. cerevisiae exposed to 160 and 800 mg L-1 of GN was studied. Both GN concentrations induced expression changes in a common group of genes (337), many of them related to the fungal response to reduce the nanoparticles toxicity and to maintain cell homeostasis. Also, a high number of genes were only differentially expressed in the GN800 condition (3254), indicating that high GN concentrations can induce severe changes in the physiological state of the yeast.

Quality Control of 1H-1,2,4-Triazol-5-amine. About 1H-1,2,4-Triazol-5-amine, If you have any questions, you can contact Suarez-Diez, M; Porras, S; Laguna-Teno, F; Schaap, PJ; Tamayo-Ramos, JA or concate me.

Reference:
Article; Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Journal of Molecular Structure; vol. 1201; (2020);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics