Month: November 2022

The author of 《Acylation of 25-hydroxyprotopanaxatriol with aromatic acids increases cytotoxicity》 were Lv, Liyan; Lu, Jincai; Zhang, Hongyu; Wang, Xude; Su, Guangyue; Piao, Huri; Zhao, Yuqing. And the article was published in Fitoterapia in 2019. Product Details of 586-76-5 The author mentioned the following in the article:

20(R)-25-hydroxyprotopanaxadiol (25-OH-PPD) is a natural compound showing a variety of anti-tumor effects. In an attempt to discover a new anti-cancer compound with higher antitumor activities, we designed and synthesized a series of 25-OH-PPD derivatives The cytotoxicity assay of these derivatives towards MCF-7, A549, U87, HO-8901, Hela cancer cell lines and normal IOSE144 cell lines were tested by MTT assay. Results showed that compared with compound 25-OH-PPD, acylated derivatives I [R = 4-ClC6H4, 2-FC6H4, 2,4-F2C6H3, 2-O2NC6H4, 3,5-(O2N)2C6H3] showed strong anticancer activity, and all compounds showed low toxicity or no toxicity for normal cells. In particular, compound I (R = 2,4-F2C6H3) (II) exhibited the best anti-tumor activity in all cancer cell lines (MCF-7, A549, U87, HO-8901, and Hela) with IC50 values of 5.04μM, 1.36μM, 3.24μM, 3.47μM, 4.57μM, resp. Among the five cell lines, all the compounds showed strong inhibition on A549 cells. Further studies showed that II significantly inhibited the proliferation of A549 cells by inducing apoptosis. Our results indicate that II is a potential anticancer inhibitor and provides a theor. basis for further research. In addition to this study using 4-Bromobenzoic acid, there are many other studies that have used 4-Bromobenzoic acid(cas: 586-76-5Product Details of 586-76-5) was used in this study.

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography.Product Details of 586-76-5 It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Conjugated polymer self-assembled with graphene: Synthesis and electrochemical 1-hydroxypyrene sensor》 was published in Polymer in 2020. These research results belong to Pang, Yuehong; Yang, Nianci; Shen, Xiaofang; Zhang, Yi; Feng, Liheng. COA of Formula: C14H8Br2 The article mentions the following:

Urinary 1-hydroxypyrene (1-OHP), one of the metabolite of polycyclic aromatic hydrocarbons (PAHs), has been extensively applied as a biomarker of animals and human exposure to PAHs. Herein, we synthesized a novel conjugated polymer poly-8-methoxy-7-methyl-5-(10-anthracen-9-yl)quinolone (PMMAYQ) using Suzuki coupling reaction, and then fabricated a homogeneous PMMAYQ/grahene multilayer film via layer-by-layer self-assembly technique and applied for electrochem. sensing of 1-OHP. Under the optimal conditions, {PMMAYQ-Graphene}16 modified glass carbon electrode exhibited excellent response for detection of 1-OHP. A linear range from 0.5 to 120 nM was obtained with a low detection limit of 0.07 nM (S/N = 3) and a sensitivity of 0.5539μA/μM. The electrochem. sensor exhibited excellent stability, accepted repeatability, and good selectivity. The developed method was employed for determination of 1-OHP in human urine samples and recoveries in the range of 95.6%-107.1% were achieved. The experimental process involved the reaction of 9,10-Dibromoanthracene(cas: 523-27-3COA of Formula: C14H8Br2)

9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.COA of Formula: C14H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Yu; Panek, James S. published their research in Tetrahedron in 2021. The article was titled 《Highly regio- and diastereoselective synthesis of bis-triazolines》.SDS of cas: 6630-33-7 The article contains the following contents:

A highly stereo- and regioselective homodimerization of chiral azido-esters was achieved by a 1,3-dipolar cycloaddition on chiral (E)-Me 4-azido-6-methoxy-5-methyl-6-phenylhex-2-enoates. Both 4,5-syn and 4,5-anti allylic azides could be used effectively to access corresponding bis-triazoline dimers such as I [X = 2-Br, 2-I, 3-Br; n = 0, 1] by this reproducible method. Structural conformation of a representative dimer was established by X-ray crystal anal. The experimental process involved the reaction of o-Bromobenzaldehyde(cas: 6630-33-7SDS of cas: 6630-33-7)

o-Bromobenzaldehyde(cas: 6630-33-7) is used in L-threonine aldolase-catalyzed enantio/diastereoselective aldol reactions.SDS of cas: 6630-33-7It is a key starting material in the total synthesis of an anticancer agent, (-)-taxol.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kim, Mingi; Ryu, Chan Hee; You, Dong Kyun; Hong, Ju Hyun; Lee, Kang Mun published an article in 2022. The article was titled 《Crucial Factors Regulating Intramolecular Charge-Transfer-Based Radiative Efficiency in ortho-Carboranyl Luminophores: Planarity between Substituted Biphenyl Rings》, and you may find the article in ACS Omega.Name: 1-Bromo-2-isopropylbenzene The information in the text is summarized as follows:

O-Carboranyl compounds contain specific geometries, ranging from planar to orthogonally distorted biphenyl rings. Herein, 13 o-carboranyl compounds, 1HF-13PP, were synthesized and fully characterized to determine the impact of structural formation of the aromatic group appended with the o-carborane to estimate the efficiency of their radiative decay process. All the compounds exhibited significant intramol. charge transfer (ICT)-based emission in the crystalline state at 298 K. Remarkably, increasing the distorted dihedral angles between biphenyl rings gradually decreased the emission efficiencies. Also, their radiative decay constants decreased linearly with increasing dihedral angles, which demonstrated the inversely proportional relation between these two factors. These findings distinctly suggest that the planar or distorted geometry of substituted aryl groups can strongly affect the efficiency of the ICT-based radiative process in o-carboranyl luminophores.1-Bromo-2-isopropylbenzene(cas: 7073-94-1Name: 1-Bromo-2-isopropylbenzene) was used in this study.

1-Bromo-2-isopropylbenzene(cas: 7073-94-1) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool. Name: 1-Bromo-2-isopropylbenzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Majidi, Leily; Ahmadiparidari, Alireza; Shan, Nannan; Kumar Singh, Sachin; Zhang, Chengji; Huang, Zhehao; Rastegar, Sina; Kumar, Khagesh; Hemmat, Zahra; Ngo, Anh T.; Zapol, Peter; Cabana, Jordi; Subramanian, Arunkumar; Curtiss, Larry A.; Salehi-Khojin, Amin published an article in Small. The title of the article was 《Nanostructured Conductive Metal Organic Frameworks for Sustainable Low Charge Overpotentials in Li-Air Batteries》.Application of 13465-09-3 The author mentioned the following in the article:

Lithium-oxygen batteries are among the most attractive alternatives for future electrified transportation. However, their practical application is hindered by many obstacles. Due to the insulating nature of Li2O2 product and the slow kinetics of reactions, attaining sustainable low charge overpotentials at high rates becomes a challenge resulting in the battery′s early failure and low round trip efficiency. Herein, outstanding characteristics are discovered of a conductive metal organic framework (c-MOF) that promotes the growth of nanocrystalline Li2O2 with amorphous regions. This provides a platform for the continuous growth of Li2O2 units away from framework, enabling a fast discharge at high current rates. Moreover, the Li2O2 structure works in synergy with the redox mediator (RM). The conductivity of the amorphous regions of the Li2O2 allows the RM to act directly on the Li2O2 surface instead of catalyst edges and then transport through the electrolyte to the Li2O2 surface. This direct charge transfer enables a small charge potential of <3.7 V under high current densities (1-2 A g-1) sustained for a long cycle life (100-300 cycles) for large capacities (1000-2000 mAh g-1). These results open a new direction for utilizing c-MOFs towards advanced energy storage systems. In addition to this study using Indium(III) bromide, there are many other studies that have used Indium(III) bromide(cas: 13465-09-3Application of 13465-09-3) was used in this study.

Indium(III) bromide(cas: 13465-09-3) is used in organic synthesis as a water tolerant Lewis acid. It efficiently catalyzes the three-component coupling of β-keto esters, aldehydes and urea (or thiourea) to afford the corresponding dihydropyrimidinones.Application of 13465-09-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

SDS of cas: 3141-27-3In 2021 ,《Electrochromic properties of pyrene conductive polymers modified by chemical polymerization》 appeared in RSC Advances. The author of the article were Li, Rui; Xu, Haoran; Zhang, Yuhang; Chang, Lijing; Ma, Yang; Hou, Yanjun; Miao, Shoulei; Wang, Cheng. The article conveys some information:

Pyrene is composed of four benzene rings and has a unique planar melting ring structure. Pyrene is the smallest condensed polycyclic aromatic hydrocarbon, and its unique structural properties have been extensively studied. Pyrene has excellent properties such as thermal stability, high fluorescence quantum efficiency and high carrier mobility. This paper mainly used thiophene, EDOT and triphenylamine groups to enhance the pyrene based π-conjugated system and control the mol. accumulation of organic semiconductors, and improve their charge transport performances. Five kinds of polymer were synthesized and correspondingly characterized. The five kinds of pyrene conductive polymer had outstanding properties in terms of solubility, fluorescence intensity and thermal stability, good film-forming properties, stable electrochromic properties and high coloring efficiency. The coloration efficiency (CE) of PPYTP was as high as 277 cm2 C-1, and the switching response time was short. The coloring time of PPYEDOT was 1.3 s and the bleaching time was 3.2 s. The lower impedance will also provide the possibility of such polymers being incorporated into electrochromic devices in the future. In short, the synthesized new pyrene conductive polymers will have wide application prospects in the field of electrochromic materials. After reading the article, we found that the author used 2,5-Dibromothiophene(cas: 3141-27-3SDS of cas: 3141-27-3)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .SDS of cas: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Computed Properties of C4H7BrO2In 2019 ,《A new quinoline-derived highly-sensitive fluorescent probe for the detection of hydrazine with excellent large-emission-shift ratiometric response》 appeared in Talanta. The author of the article were Wu, Qingqing; Zheng, Jianlu; Zhang, Wencui; Wang, Jianbo; Liang, Wenlang; Stadler, Florian J.. The article conveys some information:

Hydrazine is an important industrial material yet highly toxic and extremely harmful to people’s health when over-exposed in the environment, thus monitoring hydrazine is of great significance. A novel highly fluorescent fluorophore BQ-OH, based on hydroxyl- and benzo[d]oxazole-substituted quinoline structure, was synthesized and esterified with 4-bromobutyric acid to afford a fluorescent probe BQABr for the selective detection of hydrazine. The probe follows SN2(nucleophilic substitution)-cyclization sensing mechanism with remarkable response, excellent sensitivity and selectivity. Spectra experiments in aqueous solutions demonstrated that BQABr exhibited an excellent ratiometric fluorescence response toward hydrazine with 2 well separated emission bands before/after sensing reaction. Emission peak shifted over 130 nm from 387 nm to 521 nm, and unexpectedly outstanding ratio signal enhancement over 3000-fold was achieved. Due to the large spectra response, a very low detection limit of 5.8 nM (0.19 ppb) was obtained. Selectivity experiment was performed, showing BQABr had nearly no spectra response to other possible disturbing analytes. The probe-coated test papers were fabricated and successfully applied to detect gaseous hydrazine. Also, potential application for the detection of hydrazine in both environmental samples and biol. samples (living cells) was demonstrated.4-Bromobutanoic acid(cas: 2623-87-2Computed Properties of C4H7BrO2) was used in this study.

4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).Computed Properties of C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Safety of 1,4-Bis(bromomethyl)benzeneIn 2020 ,《Synthesis and properties of a stimulus-responsive block polymer》 was published in RSC Advances. The article was written by Wang, B.; Liu, F. Q.. The article contains the following contents:

In this study, the synthesis of small mols. and use of an improved “”one-pot”” method to synthesize the reversible addition-fragmentation chain transfer polymerization (RAFT) reagents have been reported. By comparing with the RAFT reagents synthesized by the traditional “”step-by-step”” method, it was observed that the reagents synthesized by the two methods had the same structure, however, the improved “”one-pot”” preparation method results in a significantly higher yield. Subsequently, two different macromol. CTA segments (PVP-CTA-PVP and PDMAEMA-CTA-PDMAEMA) were prepared by RAFT polymerization, followed by the synthesis of the block polymer PDMAEMA-b-PVP-CTA-PVP-b-PDMAEMA. Through FITR, NMR, GPC and DLS anal. of the block polymer, it was observed that the isotacticity gradually became dominant as the d.p. increased. Further, using NMR spectroscopy to study the effect of pH on the block polymer, the ionization degree of the synthesized polymer in the tumor tissue environment was observed to range between 86.32% to 99.50%, which proved that the synthesized polymers exhibit significant prospects in the medical application. In the experimental materials used by the author, we found 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Safety of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Safety of 1,4-Bis(bromomethyl)benzene Due to the reactivity of bromide, they are used as potential precursors or important intermediates in organic synthesis.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Visible Light-Mediated Direct C-H Aroylation and Alkylation of Heteroarenes》 were Chang, Rui; Fang, Jie; Chen, Jian-Qiang; Liu, Dan; Xu, Guo-Qiang; Xu, Peng-Fei. And the article was published in ACS Omega in 2019. SDS of cas: 14660-52-7 The author mentioned the following in the article:

Herein, we describe the photocatalytic generation of nucleophilic aroyl radicals from simple aroyl chlorides as a universal and efficient cross-coupling strategy for the direct aroylation of heteroarenes. Furthermore, visible light-mediated direct alkylation of heteroarenes has also been achieved using unactivated bromoalkanes as radical precursors. These two strategies feature high functional group tolerance, exclusive regioselectivity for reaction at the more electrophilic position of heteroarenes, easily accessible substrates, and mild reaction conditions. Moreover, mechanism studies of two reactions are carried out to support our hypotheses. After reading the article, we found that the author used Ethyl 5-bromovalerate(cas: 14660-52-7SDS of cas: 14660-52-7)

Ethyl 5-bromovalerate(cas: 14660-52-7) belongs to bromides. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact.SDS of cas: 14660-52-7

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Pd(CH3CN)2Cl2/pipecolinic acid as a highly efficient catalytic system for Suzuki-Miyaura cross-coupling reaction of bromoaryl carboxylic acids in water》 were Li, Xiaogang; Zhang, Wenbin; Fu, Leiqing; Guo, Mengping. And the article was published in Catalysts in 2019. Application of 586-76-5 The author mentioned the following in the article:

In this study, a convenient and highly efficient catalytic system for the Suzuki-Miyaura coupling reaction was investigated under mild conditions. A combination of Pd(CH3CN)2Cl2 and pipecolinic acid showed excellent catalytic performance and afforded high turnover numbers; turnover numbers were up to 4.9 × 105 for the coupling reaction of 4-bromobenzoic acid and tetraphenylboron sodium. The catalytic system was also effective for the indexes of 4-bromobenzoic acid, and high turnover numbers were obtained. In the part of experimental materials, we found many familiar compounds, such as 4-Bromobenzoic acid(cas: 586-76-5Application of 586-76-5)

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography. It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.Application of 586-76-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary