Day: April 11, 2022

Quality Control of Methyl 3-bromopropanoate. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Iodinated Cyanine Dyes for Fast Near-Infrared-Guided Deep Tissue Synergistic Phototherapy. Author is Cao, Jie; Chi, Jinnan; Xia, Junfei; Zhang, Yanru; Han, Shangcong; Sun, Yong.

Phototheranostics, which combines deep tissue imaging and phototherapy [photodynamic therapy (PDT) and/or photothermal therapy (PTT)] via light irradiation, is a promising strategy to treat tumors. Near-IR (NIR) cyanine dyes are researched as potential phototheranostics reagents for their excellent photophys. properties. However, the low singlet oxygen generation efficiency of cyanine dyes often leads to inadequate therapeutic efficacy for tumors. Herein, we modified an indocyanine green derivative Cy7 with heavy atom iodine to form a novel NIR dye CyI to improve the reactive oxygen species (ROS) production and heat generation while, at the same time, maintain their fluorescence characteristics for in vivo noninvasive imaging. More importantly, in vitro and in vivo therapeutic results illustrated that CyI could quickly and simultaneously generate enhanced ROS and heat to induce more cancer cell apoptosis and higher inhibition rates in deep HepG2 tumors than other noniodinated NIR dyes upon NIR irradiation Besides, low toxicity of the resulted iodinated NIR dyes was confirmed by in vivo biodistribution and acute toxicity. Results indicate that this low toxic NIR dye could be an ideal phototheranostics agent for deep tumor treatments. Our study presents a novel approach to achieve the fast-synergistic PDT/PTT treatment in deep tissues.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Stability evaluation of iron and vitamin A during processing and storage of fortified pasta, published in 2020, which mentions a compound: 2489531-02-2, Name is Ethylenediaminetetraaceticacidferricsodiumsalttrihydrate, Molecular C10H18FeN2NaO11, SDS of cas: 2489531-02-2.

Pasta holds greater potential for improving the nutritional status of the population and its fortification with micronutrients like iron and vitamin A could be an effective strategy to provide the essential nutrients in the diet. This study quantified the losses of two different micronutrients (iron and vitamin A) in fortified pasta postprocessing and during storage for 4 mo. Chem. salts of iron, namely, ferric sodium ethylene diamine tetra-acetic acid (NaFeEDTA) and ferrous sulfate (FeSO4), were added to pasta formulation at 4,5,6 mg/100g and 6,7,8 mg/100g resp., whereas for vitamin A, retinyl acetate (RA) was added at 700, 800 and 900μg/100g. After processing, the prepared pasta with both iron salts showed retention of 94-95% for iron and 90-92% of vitamin A activity. Iron and vitamin A-fortified pasta with maximum retention during processing and exhibiting optimum color attributes and sensory score were stored alone and in combination (NaFeEDTA and RA) at 25 and 40°C in laminates (aluminum laminates) and polypropylene packets for a period of 4 mo and evaluated for changes in their iron and vitamin A contents. An overall retention of 93-95% of the iron and 56-62% of vitamin A was observed after 4 mo considering losses during processing and storage. Among the two packaging materials used, laminates retained more of iron and vitamin A activity than polypropylene. No difference in retention rates was observed for iron and vitamin A when fortified alone or in combination.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, ACS Catalysis called Catalytic Upgrading of Ethanol to n-Butanol via Manganese-Mediated Guerbet Reaction, Author is Kulkarni, Naveen V.; Brennessel, William W.; Jones, William D., which mentions a compound: 1086138-36-4, SMILESS is P(CCNCCP(C12CC3CC(C2)CC(C3)C1)C45CC6CC(C5)CC(C6)C4)(C78CC9CC(C8)CC(C9)C7)C%10%11CC%12CC(C%11)CC(C%12)C%10, Molecular C44H69NP2, Electric Literature of C44H69NP2.

Replacement of precious metal catalysts in the Guerbet upgrade of ethanol to n-butanol with first-row metal complex catalysts is highly appreciated due to their economic and environmental friendliness. The manganese pincer complexes of the type [(RPNP)MnBr(CO)2] (R = iPr, Cy, tBu, Ph or Ad) are found to be excellent catalysts for upgrading ethanol to n-butanol. Under suitable reaction conditions and with an appropriate base, about 34% yield of n-butanol can be obtained in high selectivity. A detailed account on the effect of the temperature, solvent, nature, and proportion of base used and the stereoelectronic effects of the ligand substituents on the catalytic activity of the catalysts as well as the plausible deactivation pathways is presented.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Recommanded Product: 3395-91-3. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Catalytic Asymmetric Homologation of Ketones with α-Alkyl α-Diazo Esters. Author is Tan, Fei; Pu, Maoping; He, Jun; Li, Jinzhao; Yang, Jian; Dong, Shunxi; Liu, Xiaohua; Wu, Yun-Dong; Feng, Xiaoming.

The homologation of ketones with diazo compounds was a useful strategy to synthesize one-carbon chain-extended acyclic such as PhC(O)CMeCO2MeR [R = allyl, Bn, CH2(2-naphthyl), etc.] or ring-expanded cyclic ketones e.g., I. However, the asym. homologation of acyclic ketones with α-diazo esters remains a challenge due to the lower reactivity and complicated selectivity. Herein, the enantioselective catalytic homologation of acetophenone and related derivatives with α-alkyl α-diazo esters was reported utilizing a chiral scandium(III) N,N’-dioxide as the Lewis acid catalyst. This reaction supplies a highly chemo-, regio-, and enantioselective pathway for the synthesis of optically active β-keto esters with an all-carbon quaternary center through highly selective alkyl-group migration of the ketones. Moreover, the ring expansion of cyclic ketones was accomplished under slightly modified conditions, affording a series of enantioenriched cyclic β-keto esters. D. functional theory calculations was carried out to elucidate the reaction pathway and possible working models that could explain the observed regio- and enantioselectivity.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Application In Synthesis of Bis(2-(Di(adamantan-1-yl)phosphino)ethyl)amine. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Bis(2-(Di(adamantan-1-yl)phosphino)ethyl)amine, is researched, Molecular C44H69NP2, CAS is 1086138-36-4, about Pincer Ligand Enhanced Rhodium-Catalyzed Carbonylation of Formaldehyde: Direct Ethylene Glycol Production. Author is Meyer, Tim; Konrath, Robert; Kamer, Paul C. J.; Wu, Xiao-Feng.

Formaldehyde is one of the most important bulk chems. and is produced on a million tone scale (52 million tons in 2017).[1] Since the middle of the last century, the challenge has remained to produce the valuable ethylene glycol (EG) directly from the C1 building block formaldehyde in a single step. In the systems reported so far, the reaction conditions were very harsh, often with pressures above 400 bar. However, under milder conditions, the selectivity was on the side of glycol aldehyde (GA) and the hydrogenation product methanol. Only traces of EG could be generated in the presence of a Rh catalyst. Herein, the authors describe a new Rh catalyst system with pincer ligand, which allows the direct one pot synthesis of EG from easy to handle paraformaldehyde (PFA) at remarkable mild conditions (70 bar, 100°C) and overcomes the aforementioned limitations with yield up to 40%.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Cao, Jie; Chi, Jinnan; Xia, Junfei; Zhang, Yanru; Han, Shangcong; Sun, Yong published an article about the compound: Methyl 3-bromopropanoate( cas:3395-91-3,SMILESS:O=C(OC)CCBr ).Electric Literature of C4H7BrO2. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:3395-91-3) through the article.

Phototheranostics, which combines deep tissue imaging and phototherapy [photodynamic therapy (PDT) and/or photothermal therapy (PTT)] via light irradiation, is a promising strategy to treat tumors. Near-IR (NIR) cyanine dyes are researched as potential phototheranostics reagents for their excellent photophys. properties. However, the low singlet oxygen generation efficiency of cyanine dyes often leads to inadequate therapeutic efficacy for tumors. Herein, we modified an indocyanine green derivative Cy7 with heavy atom iodine to form a novel NIR dye CyI to improve the reactive oxygen species (ROS) production and heat generation while, at the same time, maintain their fluorescence characteristics for in vivo noninvasive imaging. More importantly, in vitro and in vivo therapeutic results illustrated that CyI could quickly and simultaneously generate enhanced ROS and heat to induce more cancer cell apoptosis and higher inhibition rates in deep HepG2 tumors than other noniodinated NIR dyes upon NIR irradiation Besides, low toxicity of the resulted iodinated NIR dyes was confirmed by in vivo biodistribution and acute toxicity. Results indicate that this low toxic NIR dye could be an ideal phototheranostics agent for deep tumor treatments. Our study presents a novel approach to achieve the fast-synergistic PDT/PTT treatment in deep tissues.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Discovery of Novel Janus Kinase (JAK) and Histone Deacetylase (HDAC) Dual Inhibitors for the Treatment of Hematological Malignancies, published in 2019-04-25, which mentions a compound: 3395-91-3, mainly applied to pyrimidinaminopyrazole hydroxamate preparation JAK HDAC inhibitor hematol malignancy treatment; selected pyrimidinaminopyrazole compound pharmacokinetic study bioavailability antitumor efficacy, Recommanded Product: Methyl 3-bromopropanoate.

Concurrent inhibition of Janus kinase (JAK) and histone deacetylase (HDAC) could potentially improve the efficacy of the HDAC inhibitors in the treatment of cancers and resolve the problem of HDAC inhibitor resistance in some tumors. Here, a novel series of pyrimidin-2-amino-pyrazol hydroxamate derivatives as JAK and HDAC dual inhibitors was designed, synthesized, and evaluated, among which I possessed potent and balanced activities against both JAK2 and HDAC6 with half-maximal inhibitory concentration at the nanomolar level. I exhibited improved antiproliferative and proapoptotic activities over SAHA and ruxolitinib in several hematol. cell lines. Remarkably, I exhibited more potent antiproliferation effect than the combination of SAHA and ruxolitinib in HEL cells bearing JAK2V617F mutation. Pharmacokinetic studies in mice showed that I possessed good bioavailability after i.p. administration. Finally, I showed antitumor efficacy with no significant toxicity in a HEL xenograft model. Collectively, the results confirm the therapeutic potential of JAK and HDAC dual inhibitors in hematol. malignancies and provide valuable leads for further structural optimization and antitumor mechanism study.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Verma, Piyush Kumar; Prasad, K. Sujit; Varghese, Dominic; Geetharani, K. published an article about the compound: Methyl 3-bromopropanoate( cas:3395-91-3,SMILESS:O=C(OC)CCBr ).Safety of Methyl 3-bromopropanoate. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:3395-91-3) through the article.

A Co-complex-catalyzed borylation of a wide range of alkyl halides with a diboron reagent (B2pin2 or B2neop2) was developed under mild reaction conditions, demonstrating the 1st Co-mediated cross-coupling with alkyl electrophiles. This protocol allows alkyl boronic esters to be accessed from alkyl halides, including alkyl chlorides, which were used rarely as coupling partners. Mechanistic studies reveal the possible involvement of an alkyl radical intermediate in this Co-mediated catalytic cycle.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Design, Synthesis, and Activity Evaluation of Novel Acyclic Nucleosides as Potential Anticancer Agents In Vitro and In Vivo, published in 2021-02-25, which mentions a compound: 3395-91-3, Name is Methyl 3-bromopropanoate, Molecular C4H7BrO2, HPLC of Formula: 3395-91-3.

In the present work, 103 novel acyclic nucleosides were designed, synthesized, and evaluated for their anticancer activities in vitro and in vivo. The structure-activity relationship (SAR) studies revealed that most target compounds inhibited the growth of colon cancer cells in vitro, of which (chloro-9H-purinyl)dodecanol I exhibited the most potent effect against the HCT-116 and SW480 cells with IC50 values of 0.89 and 1.15μM, resp. Furthermore, all of the (R)-configured acyclic nucleoside derivatives displayed more potent anticancer activity compared to their (S)-counterparts. Mechanistic studies revealed that compound I triggered apoptosis in the cancer cell lines via depolarization of the mitochondrial membrane and effectively inhibited colony formation. Importantly, I inhibited the growth of the SW480 xenograft in a mouse model with low systemic toxicity. These results indicated that acyclic nucleoside compounds are viable as potent and effective anticancer agents, and I may serve as a promising lead compound that merits further attention in future anticancer drug discovery.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthetic Route of C4H7BrO2. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Rational Design of a Multifunctional Molecular Dye with Single Dose and Laser for Efficiency NIR-II Fluorescence/Photoacoustic Imaging Guided Photothermal Therapy.

Multifunctional probes integrating accurate multi-diagnosis and efficient therapy hold great prospect in biomedical research. However, the sophisticated construction and difficulties in matching the ratios of doses and laser triggers of probes for each modality imaging and therapy are still hindered the extensive practice of multifunctional probes in biomedicine. We herein rational designed an organic dye SY1080 with intrinsic multifunction by both introducing 3,4-ethylenedioxy thiophene (EDOT) and the selenium containing acceptor unit into the backbone to balance the fluorescence brightness and emission wavelength. Under single dose and 808 nm laser irradiation conditions, SY1080 not only carried out NIR-II fluorescence/Photoacoustic imaging of real-time and noninvasive tumor delineation with excellent contrast, but also effectively ablated tumors with laser irradiation to perform PTT under the guidance of dual-modal imaging. These exciting results highlighted SY1080 as a multifunctional and universal phototheranostic platform for potential applications.

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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem