Day: October 11, 2022

Recommanded Product: 826-36-8On March 1, 2019, Gao, Panpan; Tian, Xike; Nie, Yulun; Yang, Chao; Zhou, Zhaoxin; Wang, Yanxin published an article in Chemical Engineering Journal (Amsterdam, Netherlands). The article was 《Promoted peroxymonosulfate activation into singlet oxygen over perovskite for ofloxacin degradation by controlling the oxygen defect concentration》. The article mentions the following:

Recently, perovskite is becoming a promising alternative as peroxymonosulfate (PMS) activator for the remediation of organic pollutants in water. But the factor determining PMS activation efficiency of perovskite and the evolution of reactive oxygen species (ROS) remain equivocal and elusive. In this study, we proposed an oxygen defect dependent PMS activation mechanism over perovskite with the singlet oxygen (1O2) as the dominant ROS. Among the tested four perovskites, ofloxacin (OFX) degradation efficiency increased with the following order: LaFeO3 < LaZnO3 < LaMnO3 < LaNiO3, which agreed well with their oxygen defect amounts based on XPS and ESR (EPR) anal. The results clearly demonstrated a good relationship among oxygen defects in LaBO3, OFX degradation efficiency and 1O2 concentration Moreover, 1O2 evolution mechanism over perovskite by decreasing the activation energy of PMS self-decomposition was proposed. The 1O2 mediated OFX degradation pathway was further studied by HPLC-MS technique and three-dimensional excitation-emission matrix fluorescence spectroscopy (3D EEMs). This work provides a new insight into PMS activation by perovskites and favors its application in actual water treatment. In the experiment, the researchers used many compounds, for example, Triacetonamine(cas: 826-36-8Recommanded Product: 826-36-8)

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine-containing compounds are also frequently employed in synthesis as ligands or auxiliaries. Accordingly, many efforts have been devoted to the development of novel methods for the synthesis of these compounds over the years.Recommanded Product: 826-36-8

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

《Amides of pyrrole- and thiophene-fused anthraquinone derivatives: a role of the heterocyclic core in antitumor properties》 was written by Tikhomirov, Alexander S.; Litvinova, Valeria A.; Andreeva, Daria V.; Tsvetkov, Vladimir B.; Dezhenkova, Lyubov G.; Volodina, Yulia L.; Kaluzhny, Dmitry N.; Treshalin, Ivan D.; Schols, Dominique; Ramonova, Alla A.; Moisenovich, Mikhail M.; Shtil, Alexander A.; Shchekotikhin, Andrey E.. Quality Control of tert-Butyl 4-aminopiperidine-1-carboxylate And the article was included in European Journal of Medicinal Chemistry in 2020. The article conveys some information:

A new series of naphtho[2,3-f]indole-3-carboxamides I [R1 = Me; R2 = (3S)-3-aminopyrrolidin-1-yl, ((3S)-pyrrolidin-3-yl)amino, 4-amino-1-piperidyl, etc.; X = NH, NMe, NBn, etc.;] and anthra[2,3-b]thiophene-3-carboxamides I [R1 = H, X = S] was synthesized via coupling the resp. acids with cyclic diamines and dissected the role of the heterocyclic core in antitumor properties. New compounds demonstrated a submicromolar antiproliferative potency close to doxorubicin (Dox) against five tumor cell lines of various tissue origin. In contrast to Dox, the new compounds were similarly cytotoxic for HCT116 colon carcinoma cells (wild type p53) and their isogenic p53 knockout counterparts. Compound I [R1 = Me; R2 = (3S)-3-aminopyrrolidin-1-yl; X = NH] formed more affine complexes with DNA duplex than furan and thiophene analogs, a property that could be translated into a stronger inhibition of topoisomerase 1 mediated DNA unwinding. At tolerable doses the water soluble derivative I [R1 = Me; R2 = (3S)-3-aminopyrrolidin-1-yl; X = NH] significantly inhibited tumor growth (up to 79%) and increased the lifespan (153%) of mice bearing P388 lymphoma transplants. In the experiment, the researchers used many compounds, for example, tert-Butyl 4-aminopiperidine-1-carboxylate(cas: 87120-72-7Quality Control of tert-Butyl 4-aminopiperidine-1-carboxylate)

tert-Butyl 4-aminopiperidine-1-carboxylate(cas: 87120-72-7) belongs to anime. In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (NH3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines).Quality Control of tert-Butyl 4-aminopiperidine-1-carboxylate

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Related Products of 109384-19-2In 2021 ,《Polyplex-Loaded Hydrogels for Local Gene Delivery to Human Dermal Fibroblasts》 appeared in ACS Biomaterials Science & Engineering. The author of the article were Duran-Mota, Jose Antonio; Yani, Julia Quintanas; Almquist, Benjamin D.; Borros, Salvador; Oliva, Nuria. The article conveys some information:

Impaired cutaneous healing leading to chronic wounds affects between 2 and 6% of the total population in most developed countries and it places a substantial burden on healthcare budgets. Current treatments involving antibiotic dressings and mech. debridement are often not effective, causing severe pain, emotional distress, and social isolation in patients for years or even decades, ultimately resulting in limb amputation. Alternatively, gene therapy (such as mRNA therapies) has emerged as a viable option to promote wound healing through modulation of gene expression. However, protecting the genetic cargo from degradation and efficient transfection into primary cells remain significant challenges in the push to clin. translation. Another limiting aspect of current therapies is the lack of sustained release of drugs to match the therapeutic window. Herein, we have developed an injectable, biodegradable and cytocompatible hydrogel-based wound dressing that delivers poly(β-amino ester)s (pBAEs) nanoparticles in a sustained manner over a range of therapeutic windows. We also demonstrate that pBAE nanoparticles, successfully used in previous in vivo studies, protect the mRNA load and efficiently transfect human dermal fibroblasts upon sustained release from the hydrogel wound dressing. This prototype wound dressing technol. can enable the development of novel gene therapies for the treatment of chronic wounds. In the part of experimental materials, we found many familiar compounds, such as tert-Butyl 4-hydroxypiperidine-1-carboxylate(cas: 109384-19-2Related Products of 109384-19-2)

tert-Butyl 4-hydroxypiperidine-1-carboxylate(cas:109384-19-2) is a 4-hydroxypyridine with a boc protecting group used in the preparation of neurologically active agents and other pharmaceutical compounds.Related Products of 109384-19-2

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Formula: C9H17NOOn September 1, 2020 ,《Long-Lasting and Intense Chemiluminescence of Luminol Triggered by Oxidized g-C3N4 Nanosheets》 was published in Analytical Chemistry (Washington, DC, United States). The article was written by Sun, Xiaoqing; Lei, Jing; Jin, Yan; Li, Baoxin. The article contains the following contents:

Most of the known chemiluminescence (CL) systems are flash-type, whereas a CL system with long-lasting and strong emission is very favorable for accurate CL quant. anal. and imaging assays. In this work, we found that the oxidized g-C3N4 (g-CNOX) could trigger luminol-H2O2 to produce a long-lasting and intense CL emission. The CL emission lasted for over 10 min and could be observed by the naked eye in a dark room. By means of a CL spectrum, X-ray photoelectron spectra, and ESR spectra, the possible mechanism of this CL reaction was proposed. This strong and long-duration CL emission was attributed to the high catalytic activity of g-CNOX nanosheets and continuous generation of reactive oxygen species from H2O2 on g-CNOX surface. Taking full advantage of the long-lasting CL property of this system, we proposed one “”non-in-situ mixing”” mode of CL measurement. Compared with the traditional “”in-situ mixing”” CL measurement mode, this measurement mode was convenient to operate and had good reproducibility. This work not only provides a long-lasting CL reaction but also deepens the understanding of the structure and properties of g-C3N4 material. In the experiment, the researchers used Triacetonamine(cas: 826-36-8Formula: C9H17NO)

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine is a key saturated heterocyclic scaffold found in several of the top-selling small molecule pharmaceuticals and natural alkaloids, with a diverse range of biological activities. Hence, continuous efforts have been made to develop convenient methods to prepare piperidine derivatives.Formula: C9H17NO

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Recommanded Product: 826-36-8On September 30, 2022 ,《Facile construction of fluorescent C70-COOH nanoparticles with advanced antibacterial and anti-biofilm photodynamic activity》 was published in Journal of Photochemistry and Photobiology, B: Biology. The article was written by Tan, Yixuan; Ma, Yihan; Fu, Sheng; Zhang, Aiqing. The article contains the following contents:

Photodynamic antibacterial therapy has been considered as one of the most promising treatments to alleviate the spread of multidrug resistant bacterial pathogens. Given the hypoxic environment of infectious tissues, photosensitizers with reduced oxygen-demand could exhibit superiority upon irradiation Herein reported is a novel C70-based photosensitizers synthesized by the facile one-step thiol-ene reaction. Various characterization techniques were employed to confirm the structural, photoluminescent properties, photostability and biocompatibility of the as-synthesized C70-COOH nanoparticles. Furthermore, they were capable of efficiently producing reactive oxygen species following both the type I and II mechanistic pathways, thus still generating adequate free radicals under hypoxic condition. Therefore, they could approach and destroy the bacterial cell membrane in the presence of visible light, thereby causing cytoplasmic leakage and eventually achieving broad-spectrum inactivation of four representative bacterial strains. Especially, methicillin-resistant Staphylococcus aureus (MRSA) were completely eliminated after merely 10 min irradiation, and the formation of its corresponding biofilm were also greatly inhibited by C70-COOH nanoparticles. These results provide new insights and opportunities for the development of hypoxia-tolerant fullerene-based photosensitizers to combat multidrug resistant bacterial and related infections. In addition to this study using Triacetonamine, there are many other studies that have used Triacetonamine(cas: 826-36-8Recommanded Product: 826-36-8) was used in this study.

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine is a key saturated heterocyclic scaffold found in several of the top-selling small molecule pharmaceuticals and natural alkaloids, with a diverse range of biological activities. Hence, continuous efforts have been made to develop convenient methods to prepare piperidine derivatives.Recommanded Product: 826-36-8

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Dileep, K. V.; Sakai, Naoki; Ihara, Kentaro; Kato-Murayama, Miyuki; Nakata, Akiko; Ito, Akihiro; Sivaraman, D. M.; Shin, Jay W.; Yoshida, Minoru; Shirouzu, Mikako; Zhang, Kam Y. J. published an article on February 15 ,2021. The article was titled 《Piperidine-4-carboxamide as a new scaffold for designing secretory glutaminyl cyclase inhibitors》, and you may find the article in International Journal of Biological Macromolecules.Formula: C6H12N2O The information in the text is summarized as follows:

Alzheimer’s disease (AD), a common chronic neurodegenerative disease, has become a major public health concern. Despite years of research, therapeutics for AD are limited. Overexpression of secretory glutaminyl cyclase (sQC) in AD brain leads to the formation of a highly neurotoxic pyroglutamate variant of amyloid beta, pGlu-Aβ, which acts as a potential seed for the aggregation of full length Aβ. Preventing the formation of pGlu-Aβ through inhibition of sQC has become an attractive disease-modifying therapy in AD. In this current study, through a pharmacophore assisted high throughput virtual screening, we report a novel sQC inhibitor (Cpd-41) with a piperidine-4-carboxamide moiety (IC50 = 34μM). Systematic mol. docking, MD simulations and X-ray crystallog. anal. provided atomistic details of the binding of Cpd-41 in the active site of sQC. The unique mode of binding and moderate toxicity of Cpd-41 make this mol. an attractive candidate for designing high affinity sQC inhibitors. In the part of experimental materials, we found many familiar compounds, such as Piperidine-4-carboxamide(cas: 39546-32-2Formula: C6H12N2O)

Piperidine-4-carboxamide(cas: 39546-32-2) belongs to anime. Reaction with nitrous acid (HNO2), which functions as an acylating agent that is a source of the nitrosyl group (―NO), converts aliphatic primary amines to nitrogen and mixtures of alkenes and alcohols corresponding to the alkyl group in a complex process. This reaction has been used for analytical determination of primary amino groups in a procedure known as the Van Slyke method.Formula: C6H12N2O

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Long, Yangke; Huang, Yixuan; Wu, Huiyi; Shi, Xiaowen; Xiao, Ling published their research in Chemical Engineering Journal (Amsterdam, Netherlands) on August 1 ,2019. The article was titled 《Peroxymonosulfate activation for pollutants degradation by Fe-N-codoped carbonaceous catalyst: Structure-dependent performance and mechanism insight》.Quality Control of Triacetonamine The article contains the following contents:

In this study, Fe-N-codoped carbonaceous catalysts (Fe-N-C-x) with different structures including one-dimensional carbon nanotubes (1D CNTs) and two-dimensional porous carbon sheets (2D NC) to three-dimensional carbon nanotubes/porous carbon sheets composites (3D CNTs/NC) were systematically synthesized and applied as peroxymonosulfate (PMS) activators. It was found that the Fe-N-C-x catalysts exhibited structure-dependent catalytic performance, following the order of 2D NC > 3D CNTs/NC > 1D CNTs, and also substrate-dependent degradation performance that the reaction kinetics varied greatly for different organic pollutants. Benefiting from the unique structure characteristic and high d. of active sites, 2D Fe-N-C-1 showed far superior catalytic performance than the generally used carbocatalysts with negligible Fe leaching. Besides, various influential factors affecting the catalytic performance were systematically investigated. Fe-N-C-1 showed high catalytic efficiencies toward a broad spectrum of organic pollutants, and it was confirmed that both radical and non-radical degradation pathways existed during pollutants degradation The competitive radical quenching tests and ESR measurements verified that the superoxide anion radical (OA·-2) was the primary reactive oxidized species for degradation of p-chlorophenol (4-CP). The chronoamperometry anal. demonstrated that Fe-N-C-1 facilitated the electron transfer from 4-CP to PMS, resulting in the degradation of 4-CP through a non-radical mechanism. Our result not only reveals the structure-dependent PMS activation performance of transition-metal and nitrogen codoped carbocatalysts but also provides solid evidence that the defect-rich carbon materials with amorphous carbon and partial graphitic structure also favor the electron transfer mechanism. The experimental process involved the reaction of Triacetonamine(cas: 826-36-8Quality Control of Triacetonamine)

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine is ubiquitous structural motif widely occurred in diverse synthetically and naturally occurring bioactive molecules. Piperidines are an immensely important class of compounds medicinally: the piperidine ring is the most common heterocyclic subunit among FDA approved drugs.Quality Control of Triacetonamine

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Wang, Yujiao; Wang, Li; Ma, Fang; You, Yongqiang published an article in Chemical Engineering Journal (Amsterdam, Netherlands). The title of the article was 《FeOx@graphitic carbon core-shell embedded in microporous N-doped biochar activated peroxydisulfate for removal of Bisphenol A: Multiple active sites induced non-radical/radical mechanism》.Name: Triacetonamine The author mentioned the following in the article:

The development of novel carbocatalysts with high activity and stability is important for the rapid degradation of emerging pollutants. Fe/N co-doped biochar (FeOx@GC-NBC) was innovatively synthesized with a pyrolytic carbonization method and then used as a functional peroxydisulfate (PDS) activator to degrade Bisphenol A (BPA). FeOx@GC-NBC with an optimized Fe/N ratio modification exhibited 23.16 and 8.65-fold great activity for BPA removal compared to pristine BC and N-doped BC, resp. Approx. 93% of total organic carbon (TOC) could be removed in the heterogeneous activation system. We attributed the excellent performance of FeOx@GC-NBC to the following attributes: i) a microporous carbon matrix with larger sp. surface area (1691.81 m2·g-1) was favorable for adsorption, exposure of catalyst active sites (e.g., Fe-Nx, Graphitic N) and electron-transfer; ii) the C-O-Fe bond and highly core-shell structure of graphitic nanosheets (FeOx@GC) enhanced the N retention ability and durability of the catalyst; iii) organics adsorption dominated by a “”pore-filling and π-π interaction”” mechanism effectively promoted BPA oxidation In acidic and neutral solutions, the radical oxidation (SO·-4and ·OH) processes were responsible for BPA decomposition In alk. solution, electron transfer, instead of 1O2 or a high-valent iron species, was the dominant pathway. This study proposes a simple and feasible strategy to synthesize the FeOx@GC-NBC catalyst, which provides insights into catalyst design and the internal active sites involved in the purification mechanism of refractory organics The experimental part of the paper was very detailed, including the reaction process of Triacetonamine(cas: 826-36-8Name: Triacetonamine)

Triacetonamine(cas: 826-36-8) is a member of piperidine. Piperidine-containing compounds are also frequently employed in synthesis as ligands or auxiliaries. Accordingly, many efforts have been devoted to the development of novel methods for the synthesis of these compounds over the years.Name: Triacetonamine

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

The author of 《Photoredox-catalyzed synthesis of sulfones through deaminative insertion of sulfur dioxide》 were Wang, Xuefeng; Kuang, Yunyan; Ye, Shengqing; Wu, Jie. And the article was published in Chemical Communications (Cambridge, United Kingdom) in 2019. Reference of tert-Butyl 4-aminopiperidine-1-carboxylate The author mentioned the following in the article:

Katritzky salts were used as the alkyl radical precursors with the insertion of sulfur dioxide under photoredox catalysis. This transformation first enables direct generation of various alkylsulfonyl radicals by photoinduced single electron reduction, leading to diverse dialkyl sulfones in good to excellent yields. A radical pathway was proposed under visible-light induced conditions with the insertion of sulfur dioxide. In the experiment, the researchers used tert-Butyl 4-aminopiperidine-1-carboxylate(cas: 87120-72-7Reference of tert-Butyl 4-aminopiperidine-1-carboxylate)

tert-Butyl 4-aminopiperidine-1-carboxylate(cas: 87120-72-7) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.Reference of tert-Butyl 4-aminopiperidine-1-carboxylate

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Sharma, Jeet; Misra, S. K.; Kulshrestha, Vaibhav published an article in 2021. The article was titled 《Internally crosslinked poly(2,6-dimethyl-1,4-phenylene ether) based anion exchange membrane for recovery of different acids by diffusion dialysis》, and you may find the article in Chemical Engineering Journal (Amsterdam, Netherlands).Electric Literature of C6H11NO The information in the text is summarized as follows:

Acid recovery from acidic waste is a critical issue to be focused on nowadays. Chem. approaches for recovery are not com. viable and energy intensive to save the environment. Here, we report internally crosslinked poly (2,6-dimethyl-1,4-phenylene ether) (PPE) based anion exchange membranes (AEMs) for acid recovery by diffusion dialysis, prepared via quick grafting of N-methyl-4-piperidone using ultrasonication. The prepared AEMs are assessed for their physicochem. parameters and depicted water uptake (WU) and ion-exchange capacity (IEC) in the range 22.00%-31.00% and 0.64 meq/g-2.18 meq/g resp. for Cl-1, NO-3 and SO2-4 ions. AEMs were investigated for recovery of hydrochloric acid (HCl), nitric acid (HNO3) and sulfuric acid (H2SO4) from simulated effluent based on their proton diffusion coefficient (U+H), separation factor (S) and recovery efficiency. These membranes illustrated the proton diffusion coefficient as high as 0.065 m h-1 and enhanced separation factor values up to 132 at 27°C. Recovery performance for different acids is corroborated based on unique self-organized membrane structure, studied using AFM phase imaging and cumulative influence of bulk diffusion coefficient, ion-exchange capacity, and hydration radii of Cl-1, NO-3 and SO2-4 ions. The acid recovery efficiency illustrated the trend HCl > HNO3 > H2SO4. The hydrate (-OH) functionality with a non-overlapping set of lone pairs on oxygen enhances the proton mobility via Grotthuss mechanism inside the membrane matrix and provides a cradle-like pathway for high proton mobility. The results are pronounced for fabricated membranes compared to com. available standards for acid recovery via diffusion dialysis. In addition to this study using 1-Methyl-4-piperidone, there are many other studies that have used 1-Methyl-4-piperidone(cas: 1445-73-4Electric Literature of C6H11NO) was used in this study.

1-Methyl-4-piperidone(cas: 1445-73-4) is a member of piperidine. Piperidine is a key saturated heterocyclic scaffold found in several of the top-selling small molecule pharmaceuticals and natural alkaloids, with a diverse range of biological activities. Hence, continuous efforts have been made to develop convenient methods to prepare piperidine derivatives.Electric Literature of C6H11NO

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem