Category: bromides-buliding-blocks

In 2022,Staerz, Sophia D.; Jones, Corey L.; Tepe, Jetze J. published an article in Journal of Medicinal Chemistry. The title of the article was 《Design, Synthesis, and Biological Evaluation of Potent 20S Proteasome Activators for the Potential Treatment of α-Synucleinopathies》.Quality Control of Methyl 3-(bromomethyl)benzoate The author mentioned the following in the article:

While neurodegenerative diseases affect millions of patients worldwide, there are insufficient available therapeutics to halt or slow down the progression of these diseases. A key pathol. feature of several neurodegenerative diseases is the oligomerization and aggregation of specific intrinsically disordered proteins (IDPs) creating neuronal deposits, such as Lewy bodies in Parkinson’s disease. Clearance of these pathogenic, aggregation-prone IDPs is mediated by the 20S isoform of the human proteasome. Thus, enhancing the 20S proteasome-mediated proteolysis could be a very useful therapeutic pathway to prevent neurotoxicity. Here, authors report the successful development of sub-microM 20S proteasome activators based on a phenothiazine scaffold. This class of compounds prevented the accumulation of pathol. relevant IDPs, such as the pathogenic A53T mutated α-synuclein, in vitro and in mammalian cell lines. After reading the article, we found that the author used Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Quality Control of Methyl 3-(bromomethyl)benzoate)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds. 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. Quality Control of Methyl 3-(bromomethyl)benzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Chen, Xiaodong; Chen, Qian; He, Dan; Yang, Sanxiu; Yang, Yunfei; Qian, Jing; Long, Lingliang; Wang, Kun published an article in Sensors and Actuators, B: Chemical. The title of the article was 《Mitochondria targeted and immobilized ratiometric NIR fluorescent probe for investigating SO2 phytotoxicity in plant mitochondria》.Application In Synthesis of 1,4-Bis(bromomethyl)benzene The author mentioned the following in the article:

Exposure to excessive SO2 will induce severe phytotoxicity to plants. Dissecting mechanisms of SO2 phytotoxicity is vital for preventing adverse effect of SO2. But unfortunately, the mechanisms of SO2 phytotoxicity remain elusive. We speculated that interaction of SO2 derivatives with mitochondria might be an important mechanism for SO2 phytotoxicity. To authenticate this speculation, it is urgently need to detect SO2 derivatives in plant mitochondria when it is suffering from SO2 phytotoxicity. Herein, we presented a novel ratiometric NIR fluorescent probe for highly sensitive and selective detection of SO2 derivatives in plant mitochondria. Notably, the probe not only could target into the mitochondria, but also can immobilize in the mitochondria to continue detecting SO2 derivatives even when the mitochondrial membrane potential was collapsed by high concentration of SO2 derivatives Importantly, the probe has been successfully employed for monitoring high concentration of SO2 derivatives in the plant mitochondria when the plant is suffering from SO2 phytotoxicity. The results demonstrated that the SO2 derivatives level in plant mitochondria is strictly associated with SO2 phytotoxicity. Thus, the interaction of SO2 derivatives with plant mitochondria could be considered as an important mechanism for SO2 phytotoxicity. In the experimental materials used by the author, we found 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Application In Synthesis of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals.Application In Synthesis of 1,4-Bis(bromomethyl)benzene The most pervasive is the naturally produced bromomethane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Sun, Bin; Najarian, Amin Morteza; Sagar, Laxmi Kishore; Biondi, Margherita; Choi, Min-Jae; Li, Xiyan; Levina, Larissa; Baek, Se-Woong; Zheng, Chao; Lee, Seungjin; Kirmani, Ahmad R.; Sabatini, Randy; Abed, Jehad; Liu, Mengxia; Vafaie, Maral; Li, Peicheng; Richter, Lee J.; Voznyy, Oleksandr; Chekini, Mahshid; Lu, Zheng-Hong; Garcia de Arquer, F. Pelayo; Sargent, Edward H. published an article in Advanced Materials (Weinheim, Germany). The title of the article was 《Fast Near-Infrared Photodetection Using III-V Colloidal Quantum Dots》.Name: Indium(III) bromide The author mentioned the following in the article:

Colloidal quantum dots (CQDs) are promising materials for IR (IR) light detection due to their tunable bandgap and their solution processing; however, to date, the time response of CQD IR photodiodes is inferior to that provided by Si and InGaAs. It is reasoned that the high permittivity of II-VI CQDs leads to slow charge extraction due to screening and capacitance, whereas III-Vs-if their surface chem. can be mastered-offer a low permittivity and thus increase potential for high-speed operation. In initial studies, it is found that the covalent character in indium arsenide (InAs) leads to imbalanced charge transport, the result of unpassivated surfaces, and uncontrolled heavy doping. Surface management using amphoteric ligand coordination is reported, and it is found that the approach addresses simultaneously the In and As surface dangling bonds. The new InAs CQD solids combine high mobility (0.04 cm2 V-1 s-1) with a 4x reduction in permittivity compared to PbS CQDs. The resulting photodiodes achieve a response time faster than 2 ns-the fastest photodiode among previously reported CQD photodiodes-combined with an external quantum efficiency (EQE) of 30% at 940 nm. In the experiment, the researchers used Indium(III) bromide(cas: 13465-09-3Name: Indium(III) bromide)

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Name: Indium(III) bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Hayyan, Adeeb; Hizaddin, Hanee F.; Abed, Khalid M.; Mjalli, Farouq S.; Hashim, Mohd Ali; Abo-Hamad, Ali; Saleh, Jehad; Aljohani, Abdullah S. M.; Alharbi, Yousef M.; Alhumaydhi, Fahad A.; Ahmad, Abdul Aziz; Yeow, Andrew T. H.; Aldeehani, Ahmaad Kadmouse; Alajmi, Falah D. H.; Al Nashef, Inas published an article in Biomass Conversion and Biorefinery. The title of the article was 《Encapsulated deep eutectic solvent for esterification of free fatty acid》.Recommanded Product: 1779-49-3 The author mentioned the following in the article:

Abstract: A novel encapsulated deep eutectic solvent (DES) was introduced for biodiesel production via a two-step process. The DES was encapsulated in medical capsules and were used to reduce the free fatty acid (FFA) content of acidic crude palm oil (ACPO) to the min. acceptable level (< 1). The DES was synthesized from methyltriphenylphosphonium bromide (MTPB) and p-toluenesulfonic acid (PTSA). The effects pertaining to different operating conditions such as capsule dosage, reaction time, molar ratio, and reaction temperature were optimized. The FFA content of ACPO was reduced from existing 9.61to less than 1under optimum operating conditions. This indicated that encapsulated MTPB-DES performed high catalytic activity in FFA esterification reaction and showed considerable activity even after four consecutive recycling runs. The produced biodiesel after acid esterification and alk. transesterification met the EN14214 international biodiesel standard specifications. To our best knowledge, this is the first study to introduce an acidic catalyst in capsule form. This method presents a new route for the safe storage of new materials to be used for biofuel production Conductor-like screening model for real solvents (COSMO-RS) representation of the DES using σ-profile and σ-potential graphs indicated that MTPB and PTSA is a compatible combination due to the balanced presence and affinity towards hydrogen bond donor and hydrogen bond acceptor in each constituent.Methyltriphenylphosphonium bromide(cas: 1779-49-3Recommanded Product: 1779-49-3) was used in this study.

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is an organophosphorus compound, with potential use as a precursor and a solvent in organic synthesis. And it is used widely for methylenation via the Wittig reaction.Recommanded Product: 1779-49-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Liu, Yuxiang; Wu, Jun; Wang, Feng published an article in Applied Catalysis, B: Environmental. The title of the article was 《Dibenzothiophene-S,S-dioxide-containing conjugated polymer with hydrogen evolution rate up to 147 mmol g-1 h-1》.HPLC of Formula: 3141-27-3 The author mentioned the following in the article:

Mol. engineering in donor-acceptor conjugated polymers is currently one of the most successful and popular strategy to prepare high performance photocatalysts for hydrogen evolution. In this contribution, we have designed and synthesized two novel conjugated polymers with tailored donor-acceptor structures based on dibenzothiophene-S,S-dioxide and thiophene derivatives, which exhibited tunable band gaps and adjustable charge separation efficiencies. As a result, PDBTSO-T showed an outstanding hydrogen evolution rate (HER) of 1.47 mmol h-1 by DMF exfoliation under UV-vis region with Pt cocatalyst in ascorbic acid aqueous solution at 10 mg level, which is among the top performance for photocatalysis conversion reported so far. Very excitingly, when the photocatalysis tests were subjected to natural sunlight irradiation, an impressive HER of ∼27 mL (107 mmol g-1 h-1) was achieved after 0.5 h of illumination (12:30 pm – 13:00 pm) on a consistently sunny day under identical reaction conditions. The experimental process involved the reaction of 2,5-Dibromothiophene(cas: 3141-27-3HPLC of Formula: 3141-27-3)

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used in the preparation of soluble α,ω-diformyl-a-oligothiophenes.HPLC of Formula: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hu, Rong; Wang, Wan-Li; Yang, Ying-Yue; Hu, Xia-Tong; Wang, Qi-Wei; Zuo, Wei-Qiong; Xu, Ying; Feng, Qiang; Wang, Ning-Yu published an article in 2022. The article was titled 《Identification of a selective BRD4 PROTAC with potent antiproliferative effects in AR-positive prostate cancer based on a dual BET/PLK1 inhibitor》, and you may find the article in European Journal of Medicinal Chemistry.Electric Literature of C4H7BrO2 The information in the text is summarized as follows:

BRD4-targeted proteolysis targeting chimera (PROTAC) have exhibited promising in vitro and in vivo anticancer activity in a number of cancer models. However, the clin. development of current reported BRD4-PROTACs have stagnated, largely due to the safety risks caused by their poor degradation selectivity. In this study, we designed and synthesized a series of PROTACs based on our recently reported dual BET/PLK1 inhibitor WNY0824, which led to the discovery of an isoform-selective and potent BRD4-PROTAC 12a (WWL0245). WWL0245 exhibited excellent selective cytotoxicity in the BETi sensitive cancer cell lines, including AR-pos. prostate cancer cell lines. It could also efficiently induce ubiquitin-proteasomal degradation of BRD4 in AR-pos. prostate cancer cell lines, with sub-nanomolar half-maximal degrading concentration (DC50) and maximum degradation (Dmax) > 99%. Moreover, WWL0245 induced cell cycle arrest at the G0/G1 phase and apoptosis in AR-pos. prostate cancer by downregulation of the protein levels of AR, PSA and c-Myc as well as transcriptionally suppressed AR-regulated genes. WWL0245 was thus expected to be developed as a promising drug candidate for AR-pos. prostate cancer and a valuable tool compound to study the biol. function of BRD4. In addition to this study using 4-Bromobutanoic acid, there are many other studies that have used 4-Bromobutanoic acid(cas: 2623-87-2Electric Literature 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.).Electric Literature of C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Thermo-sensitive Microgels Supported Gold Nanoparticles as Temperature-mediated Catalyst》 were Zhou, Xian-Jing; Lu, Hai-Peng; Kong, Ling-Li; Zhang, Dong; Zhang, Wei; Nie, Jing-Jing; Yuan, Jia-Yin; Du, Bin-Yang; Wang, Xin-Ping. And the article was published in Chinese Journal of Polymer Science in 2019. Related Products of 629-03-8 The author mentioned the following in the article:

Microgels with a thermo-sensitive poly(N-isopropylacrylamide) (polyNIPAm) backbone and bis-imidazolium (VIM) ionic cross-links, denoted as poly(NIPAm-co-VIM), were successfully prepared The as-synthesized ionic microgels were converted to nanoreactors, denoted as Au@PNI MGs, upon generation and immobilization of gold nanoparticles (Au NPs) of 5-8 nm in size into poly(NIPAm-co-VIM). The content of Au NPs in microgels could be regulated by controlling the 1,6-dibromohexane/vinylimidazole molar ratio in the quaternization reaction. The microgel-based nanoreactors were morphol. spherical and uniform in size, and presented reversible thermo-sensitive behavior with volume phase transition temperatures (VPTTs) at 39-40 °C. The Au@PNI MGs were used for the reduction of 4-nitrophenol, of which the catalytic activity could be modulated by temperature In the experiment, the researchers used 1,6-Dibromohexane(cas: 629-03-8Related Products of 629-03-8)

1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Related Products of 629-03-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Highly frustrated liquid crystal phases in optically active dimers: synthesis and rich phase transitional behavior》 were Nayak, Rashmi Ashwathama; Bhat, Sachin A.; Shanker, G.; Rao, D. S. Shankar; Yelamaggad, C. V.. And the article was published in New Journal of Chemistry in 2019. Product Details of 2623-87-2 The author mentioned the following in the article:

Herein the authors report on the synthesis and characterization of four new series of optically active, nonsym. dimers in which cholesterol is covalently linked to a Schiff base core through an ω-oxyalkanoyl spacer. While the Schiff base core is substituted with n-butyloxy, n-hexyloxy, n-octyloxy, n-decyloxy and n-dodecyloxy tails, three even-parity spacers, namely, 4-oxybutanoyl, 6-oxyhexanoyl, 8-oxyoctanoyl, and an odd-parity spacer, namely, 5-oxypentanoyl, were used to join the two cores. The length and parity of the spacer and the length of the terminal tail play a vital role in deciding the phase sequences of the dimers. In general, the dimers possessing an even-parity spacer display enantiotropic LC phases such as chiral nematic (N*), twist grain boundary (TGB), smectic A (SmA), chiral smectic C (SmC*) and twist grain boundary phase with SmC* slabs (TGBC*). Some of these dimers display TGBC* over a wide temperature range. The dimers with an odd-parity (5-oxypentanoyl) spacer display, unlike their even-membered counterparts, blue phases (BPIII/II/I); besides, they stabilize N* and/or unknown smectic (SmX) phases. The CD measurements were carried out as a function of temperature on the planar texture formed by three even-membered dimers and an odd-membered dimer. The occurrence of a strong neg. CD band in the N* phase of the even-membered dimers suggests a left-handed screw sense of the macroscopic helical structure, and the scenario is opposite in the case of an odd-membered dimer. In the experiment, the researchers used 4-Bromobutanoic acid(cas: 2623-87-2Product Details of 2623-87-2)

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.).Product Details of 2623-87-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Novel hapten design, antibody recognition mechanism study, and a highly sensitive immunoassay for diethylstilbestrol in shrimp》 were Mi, Jiafei; Dong, Xiaoyun; Zhang, Xiya; Li, Chenglong; Wang, Jianyi; Mujtaba, Mari Ghulam; Zhang, Suxia; Wen, Kai; Yu, Xuezhi; Wang, Zhanhui. And the article was published in Analytical and Bioanalytical Chemistry in 2019. Category: bromides-buliding-blocks The author mentioned the following in the article:

Over the past few years, there has been a lack of progress in the quality of diethylstilbestrol (DES) antibodies used in immunoassay. In this study, a new immunizing hapten was designed for remarkably sensitive and specific antibody generation against diethylstilbestrol. By introducing a benzene ring instead of the traditional linear chain alkane as the hapten spacer, a more specific immune reaction was induced in the process of immunization. The developed polyclonal antibodies were characterized using the indirect competitive ELISA (icELISA). Under optimized conditions, the half maximal inhibitory concentration (IC50) of the best polyclonal antibody was 0.14 ng/mL and it displayed low cross-reactions (CRs) with the structural analogs such as hexestrol (HEX) and dienestrol (DI). The mol. modeling and quantum chem. computation revealed that the lowest CR of the DES antibody to DI was mainly due to the huge three-dimensional conformational difference between DES and DI. Finally, a highly sensitive icELISA method based on the polyclonal antibody was developed for the determination of DES in shrimp tissue. The limit of detection (LOD) was as low as 0.2μg/kg in shrimp and the recoveries in the spiked samples ranged from 83.4 to 90.8% with the coefficient of variation less than 13.8%. These results indicated that the use of an aromatic ring as the immunizing hapten spacer arm could be a potential strategy for the enhancement of anti-DES antibody sensitivity, and the established icELISA was applicable to the trace detection of DES in shrimp. In addition to this study using Methyl 3-(bromomethyl)benzoate, there are many other studies that have used Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Category: bromides-buliding-blocks) was used in this study.

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Some of these compounds are identical to man-made organobromine compounds, such as methyl bromide, bromoform, and bromophenols, but many others are entirely new moleclar entities, often possessing extraordinary and important biological properties. Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《A water soluble light activated hydrogen sulfide donor induced by an excited state meta effect》 were Bera, Manoranjan; Maji, Somnath; Paul, Amrita; Ray, Souvik; Maiti, Tapas Kumar; Singh, N. D. Pradeep. And the article was published in Organic & Biomolecular Chemistry in 2019. COA of Formula: C4H7BrO2 The author mentioned the following in the article:

We have utilized an m-amino benzyl based photoremovable protecting group (PRPG) to develop a new water soluble H2S donor. It efficiently releases H2S on demand in a spatio-temporally controlled fashion by an excited state “”meta effect”” with good chem. and photochem. quantum yield in an aqueous environment. The efficient photorelease of H2S under physiol. conditions was also demonstrated by in vitro studies.4-Bromobutanoic acid(cas: 2623-87-2COA of Formula: 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.).COA of Formula: C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary