Tag: 100-200

An activatable ratiometric near-infrared fluorescent probe for hydrogen sulfide imaging in vivo was written by Wu, Luyan;Zeng, Wenhui;Feng, Liandong;Hu, Yuxuan;Sun, Yidan;Yan, Yingxiao;Chen, Hong-Yuan;Ye, Deju. And the article was included in Science China: Chemistry in 2020.Formula: C6H5ClO2 The following contents are mentioned in the article:

Ratiometric fluorescent probes hold great promise for in vivo imaging; however, stimuli-activatable ratiometric probes with fluorescence emissions in near-IR (NIR) region are still very few. Herein, we report a hydrogen sulfide (H₂S)-activatable ratiometric NIR fluorescent probe (1-SPN) by integrating a H₂S-responsive NIR fluorescent probe 1 into a H₂S-inert poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b’]dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT)-based NIR semiconducting polymer nanoparticle (SPN). 1-SPN shows “always on” PCPDTBT fluorescence at 830 nm and weak probe 1 fluorescence at 725 nm under excitation at 680 nm. The ratio of NIR fluorescence intensities between 725 and 830 is small. Upon interaction with H₂S, the fluorescence at 725 nm is rapidly switched on, resulting in a large enhancement of I₇₂₅/I₈₃₀, which is allowed for sensitive visualization and quantification of H₂S concentrations in living cells. Taking advantage of enhanced tissue penetration depth of NIR fluorescence, 1-SPN is also applied for real-time ratiometric fluorescence imaging of hepatic and tumor H₂S in living mice. This study demonstrates that activatable ratiometric NIR fluorescent probes hold great potential for in vivo imaging. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Formula: C6H5ClO2).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Formula: C6H5ClO2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Amino-modified Merrifield resins as recyclable catalysts for the safe and sustainable preparation of functionalized α-diazo carbonyl compounds was written by Fantinel, Mariane;Valiati, Nayara;Moro, Pedro A. M.;Sa, Marcus M.. And the article was included in Tetrahedron in 2021.Formula: C6H9ClO3 The following contents are mentioned in the article:

Amino-functionalized polystyrene polymers derived from Merrifield resins were prepared and characterized. These basic materials were successfully employed as heterogeneous catalysts in the diazo transfer reaction to 1,3-dicarbonyl compounds R¹C(O)CH₂C(O)R² [R¹ = R² = Me, Ph, MeO; R¹ = Me, R² = Ph; R¹ = Me, Et, ClCH₂, Ph, etc., R² = EtO; R¹R² = (CH₂)₃, OCMe₂O, etc.] furnishing the corresponding diazo compounds R¹C(O)C(:N₂)C(O)R² in good to excellent yields and in relatively short reaction times. In addition, the work-up and purification protocols are simple and do not generate large amounts of waste, which are important features in sustainable catalysis and environmentally benign processes. The feasibility of the recovery and reuse of the amino-modified catalysts were also verified, since they can be employed up to five times without appreciable loss of catalytic activity. This straightforward procedure can be readily scaled up to gram scale, enabling the wide application of this method. The synthetic potential was demonstrated through the two-step preparation of 2-amino-N-dodecylacetamide (ANDA), a small mol. of com. relevance. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Formula: C6H9ClO3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Formula: C6H9ClO3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Preparation of the CNTs/AG/ITO electrode with high electro-catalytic activity for 2-chlorophenol degradation and the potential risks from intermediates was written by Liu, Haiyang;Zhang, Zhaocheng;Ren, Miao;Guan, Jiunian;Lu, Nan;Qu, Jiao;Yuan, Xing;Zhang, Ya-nan. And the article was included in Journal of Hazardous Materials in 2018.HPLC of Formula: 95-88-5 The following contents are mentioned in the article:

A novel carbon nanotubes (CNTs)/agarose (AG)/ITO electrode with high electro-catalytic activity was prepared using a simple sol-gel method. Characterization results showed that the prepared CNTs/AG membrane, coated on the ITO conductive glass, was consisted of C and O. The electro-catalytic degradation for 2-chlorophenol (2-CP) and the influence factors were investigated. The results meant that electro-catalytic degradation for 2-CP was highly dependent on pH, bias voltage, and catalyst dosage. At pH 2, 4V bias voltage, and 5wt% CNTs dosage, the electro-catalytic efficiency of CNTs/AG/ITO electrode for 2-CP (20 mg/L) achieved 98% within 180 min. Afterwards, the electro-catalytic properties of recycling electrode, roles of the generated reactive oxygen species, and the reaction pathways were also investigated and proposed. In addition, the toxicities of the generated intermediates from the electro-catalytic degradation were calculated by easy methods. The results indicated that the toxicities of some intermediates were higher than the parent pollutant, especially the formation of 2-CP dimer which was seldom reported in the advanced oxidation process. The findings of using AG as the carrier and conductive adhesive for catalytic material and the assessment methods for the possible increasing risks from the intermediates were reported firstly in this paper. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5HPLC of Formula: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.HPLC of Formula: 95-88-5

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Tuning the Properties and Self-Healing Behavior of Ionically Modified Poly(isobutylene-co-isoprene) Rubber was written by Suckow, Marcus;Mordvinkin, Anton;Roy, Manta;Singha, Nikhil K.;Heinrich, Gert;Voit, Brigitte;Saalwaechter, Kay;Boehme, Frank. And the article was included in Macromolecules (Washington, DC, United States) in 2018.Reference of 6294-17-3 The following contents are mentioned in the article:

The focus of this work is on the nature of self-healing of ionically modified rubbers obtained by reaction of brominated poly(isobutylene-co-isoprene) rubber (BIIR) with various alkyl imidazoles such as 1-methylimidazole , 1-Bu imidazole , 1-hexyl imidazole , 1-nonyl imidazole and 1-(6-chloro hexyl)-1H-imidazole . Based on stress-strain and temperature dependent DMA measurements, a structural influence of the introduced ionic imidazolium moieties on the formation of ionic clusters and, as a consequence on the mech. strength and self-healing behavior of the samples could be evidenced. These results are fully supported by a mol.-level assessment of the network structure (crosslink and constraint d.) and the dynamics of the ionic clusters using an advanced proton low-field NMR technique. The results show distinct correlations between the macroscopic behavior and mol. chain dynamics of the modified rubbers. In particular, it is shown that the optimization of material properties with regard to mech. and self-healing behavior is limited by opposing tendencies. Samples with reduced chain dynamics exhibit superior mech. behavior but lack on self-healing behavior. In spite of these limitations, the overall performance of some of our samples including self-healing behavior exceeds distinctly that of other self-healing rubbers described in the literature so far. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Reference of 6294-17-3).

1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Reference of 6294-17-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Direct Reduction of 1-Bromo-6-chlorohexane and 1-Chloro-6-iodohexane at Silver Cathodes in Dimethylformamide was written by Rose, John A.;McGuire, Caitlyn M.;Hansen, Angela M.;Karty, Jonathan A.;Mubarak, Mohammad S.;Peters, Dennis G.. And the article was included in Electrochimica Acta in 2016.Formula: C6H12BrCl The following contents are mentioned in the article:

Cyclic voltammetry and controlled-potential (bulk) electrolyzes were employed to probe the electrochem. reductions of 1-bromo-6-chlorohexane and 1-chloro-6-iodohexane at Ag cathodes in DMF containing 0.050M Bu₄N tetrafluoroborate (TBABF₄). A cyclic voltammogram for reduction of 1-bromo-6-chlorohexane shows a single major irreversible cathodic peak, whereas reduction of 1-chloro-6-iodohexane gives rise to a pair of irreversible cathodic peaks. Controlled-potential (bulk) electrolyzes of 1-bromo-6-chlorohexane at a Ag gauze cathode reveal that the process involves a two-electron cleavage of the C-Br bond to afford 1-chlorohexane as the major product, along with 6-chloro-1-hexene, n-hexane, 1-hexene, and 1,5-hexadiene as minor species. In contrast, bulk electrolyzes of 1-chloro-6-iodohexane indicate that the 1st voltammetric peak corresponds to a 1-electron process, giving a dimer (1,12-dichlorododecane) together with 1-chlorohexane and 6-chloro-1-hexene as well as 1-hexene and 1,5-hexadiene in trace amounts At potentials corresponding to the 2nd cathodic peak, reduction of 1-chloro-6-iodohexane is a mixture of 1- and two-electron steps that yields the same set of products, but in different proportions. Mechanistic schemes probably explain the electrochem. behavior of both 1-bromo-6-chlorohexane and 1-chloro-6-iodohexane. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Formula: C6H12BrCl).

1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Formula: C6H12BrCl

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Development of reliable quantitative structure-toxicity relationship models for toxicity prediction of benzene derivatives using semiempirical descriptors was written by Singh, Ayushi;Kumar, Sunil;Kapoor, Archana;Kumar, Parvin;Kumar, Ashwani. And the article was included in Toxicology Mechanisms and Methods.Name: 4-Chlororesorcinol The following contents are mentioned in the article:

The Health and environmental hazards of benzene and nitrobenzene (NB) derivatives have remained a topic of interest of researchers. In silico methods for prediction of toxicity of chems. have proved their worth in accurate forecast of environmental as well as health toxicity and are strongly recommended by regulatory authorities. Two quant. structure-toxicity relationship (QSTR) models explaining Scenedesmus obliquus toxicity trends among 39 benzene derivatives and Tetrahymena pyriformis toxicity of 103 NB and 392 benzene derivatives are developed using semiempirical quantum chem. parameters. The best constructed QSTR models have good fitting ability (R² = 0.8053, 0.7591, and 0.8283) and robustness (Q²LOO = 0.7507, 0.7227, and 0.8194; Q²LMO = 0.7338, 0.7153, and 0.8172). The external predictivity of all the models are quite good (R2EXT = 0.8256, 0.9349, and 0.8698). Electronegativity, Cosmo volume, total energy, and mol. weight are responsible for the increase and decrease of toxicity of benzene derivatives against S. obliquus while electronegativity, electrophilicity index, the heat of formation, total energy, hydrophobicity, and cosmo volume are responsible for modulation of toxicity of NB and benzene derivatives toward T. pyriformis. These models fulfill the requirements of all the five OECD principles. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Name: 4-Chlororesorcinol).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Name: 4-Chlororesorcinol

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Design and synthesis of epigallocatechin (EGC) analogs selective to inhibit α-amylase over α-glucosidases via the incorporation of caffeine acid and its derivatives was written by Chen, Wenming;Zhou, Cui;Chen, Jiansheng;Wang, Meizhu;Zhou, Fang;Wang, Chunmei;Zhang, Xu;Zhou, Wen. And the article was included in Bioorganic Chemistry in 2022.Related Products of 6294-17-3 The following contents are mentioned in the article:

Natural products are a promising and underappreciated reservoir for the preferred chem. scaffolds in the search of antidiabetic drugs. In this study twenty-one EGC-based derivatives selective to inhibit human pancreatic α-amylase (HPA), the enzyme at the top of the starch digestion pyramid, have been designed and synthesized in terms of the lead myricetin-caffeic acid conjugate 1 reported ever. We focus on methylation of caffeic acid, length of a liker, a double bond contained in the linker on the inhibition activity and selectivity of EGC-based conjugates. As a result, methylation of caffeic acid and the length of a linker affect significantly the activity and selectivity of EGC-based conjugates, but the effect of a double in caffeic acid is limited. Conjugate 2a-1 having a six-carbon-atom linker fused to EGC and caffeic acid demonstrates the most ponent inhibitory activity to HPA and its selectivity towards HPA over α-glucosidase by far superior to that construct 1. Mol. docking studies reveal that conjugate 2a-1 accommodates well to the active site of HPA with four hydrogen bonds in the form of the preorganization of two moieties EGC and caffeic acid via π-stacking interaction. Collectively, conjugating caffeic acid and EGC with an appropriate linker possibly provides a new strategy for finding the specific HPA inhibitors in the discovery of anti-diabetes mellitus drugs. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Related Products of 6294-17-3).

1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Related Products of 6294-17-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Contact sensitizers in commercial hair dye products sold in Thailand was written by Boonchai, Waranya;Bunyavaree, Monthathip;Winayanuwattikun, Waranaree;Kasemsarn, Pranee. And the article was included in Contact Dermatitis in 2016.Recommanded Product: 95-88-5 The following contents are mentioned in the article:

Summary : Background : Hair dyes are known to contain potent contact allergens for which sensitization rates have increased over the last decade. Objective : To examine the type and frequency of potent contact sensitizers labeled on hair dyes sold in metropolitan Bangkok, Thailand. Methods : During the 2013-2014 study period, labeled ingredient information from home use and professional hair dye products was collected. Results : Two hundred and fifty-two hair dye products were evaluated. One hundred and forty-nine products from 48 brands were domestically produced in Thailand, and 103 products were from 23 multinational brands produced in countries other than Thailand. Two hundred and fourteen of 252 (84.9%) hair dye products were found to contain strong skin sensitizers, with 118 (46.8%) being found in domestically produced products, and 96 (38.1%) being found in multinational brand products. Thirty-eight hair dye products (15.1%) were free of potent skin sensitizers. The number of domestically produced products (31, 20.8%) that were free of potent skin sensitizers was significantly higher (p = 0.002) than the number of multinational brand products (7, 6.8%). Conclusions : p-Phenylenediamine was the most prevalent potent sensitizer found among domestically produced hair dyes available on the market. Our findings indicate regional differences in hair dye allergen exposure. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Recommanded Product: 95-88-5).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Recommanded Product: 95-88-5

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Engineering of a near-infrared fluorescent probe for real-time simultaneous visualization of intracellular hypoxia and induced mitophagy was written by Liu, Yongchao;Teng, Lili;Chen, Lanlan;Ma, Hongchang;Liu, Hong-Wen;Zhang, Xiao-Bing. And the article was included in Chemical Science in 2018.COA of Formula: C6H5ClO2 The following contents are mentioned in the article:

Mitophagy induced by hypoxia plays an important role in regulating cellular homeostasis via the removal of dysfunctional mitochondria in the lysosomal degradation pathway, which results in physiol. changes in the mitochondria, such as the pH, polarity and viscosity. However, the lack of an effective method for imaging of both the hypoxic microenvironment and the resulting variable mitochondria limits the visualization of hypoxia-induced mitophagy. Based on the specific mitochondrial pH changes during the hypoxia-induced mitophagy process, we have reported a near-IR fluorescent probe (NIR-HMA) for real-time simultaneous visualization of the hypoxic microenvironment and the subsequent mitophagy process in live cells. NIR-HMA selectively accumulated in the hypoxic mitochondria in the NIR-MAO form, emitting at 710 nm, and then transformed into NIR-MAOH, emitting at 675 nm, in the acidified mitochondria-containing autolysosomes. Importantly, by smartly tethering the hypoxia-responsive group to the hydroxyl group of the NIR-fluorochrome, which shows ratiometric pH changes, NIR-HMA can differentiate between different levels of the hypoxic microenvironment and mitophagy. Furthermore, using NIR-HMA, we could track the complete mitophagy process from the mitochondria to the autolysosomes and visualize mitophagy caused only by hypoxia both in cancer cells and normal cells. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5COA of Formula: C6H5ClO2).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.COA of Formula: C6H5ClO2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Comparative time-based intermediates study of ozone oxidation of 4-chloro- and 4-nitrophenols followed by LCMS-TOF was written by Akharame, Michael Ovbare;Fatoki, Olalekan Siyanbola;Opeolu, Beatrice Olutoyin;Olorunfemi, Daniel Ikudayisi;Oputu, Ogheneochuko Utieyin. And the article was included in Journal of Environmental Science and Health in 2020.Formula: C6H5ClO2 The following contents are mentioned in the article:

Greater insights on the degradation pathways and intermediates formed during the oxidation of organics can be achieved by more suitable and compatible instrumentation. In our research, we sought to explore the relative advantages of the liquid chromatog. coupled to a time of flight mass spectrometer (LCMS-TOF) technique for the comparative time-based degradation intermediates and pathways of 4-chlorophenol (4CP) and 4-nitrophenol (4NP). The ozonation of the analytes solution (100 mL of 2 x 10^-3 M) was done in a sintered glass reactor, with an ozone dose of 0.14 mg min^-1 (O₂/O₃ 10 mL/min). The comparative oxidation results revealed that the 4-chloro- and 4-nitrocatechol pathways via hydroxylation were the major degradation route for 4CP and 4NP. Catechol intermediate was present as a primary breakdown product for the two analytes. Hydroquinone was observed as transient degradation intermediate for 4CP, but was absent for 4NP. Rather, a novel ozonation intermediate 2, 4-dinitrophenol was identified which was further oxidized to 3,6-dinitrocatechol. Several dimer products were identified in the oxidation processes, favored by alk. conditions with more versatility shown by 4CP. The study provided a great insight into the ozone degradation intermediates and pathways, with some intermediates scarce in literature identified. This study involved multiple reactions and reactants, such as 4-Chlororesorcinol (cas: 95-88-5Formula: C6H5ClO2).

4-Chlororesorcinol (cas: 95-88-5) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Formula: C6H5ClO2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics