Category: 4556-23-4

Fu, Yuanyuan; Zhao, Xueyan; Chen, Dengfeng; Luo, Jinyue; Huang, Shenlin published an article about the compound: Pyridine-4-thiol( cas:4556-23-4,SMILESS:SC1=CC=NC=C1 ).Electric Literature of C5H5NS. 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:4556-23-4) through the article.

A Cu-catalyzed coupling reaction of indanone oxime acetates I (R = H, Me, MeO, Br, R1 = H, MeO, Cl, Br, steroid Q, R2 = H, Br, CN, CF3) with thiols R3SH (R3 = n-dodecyl, 2-naphthyl, pyridin-4-yl, etc.) has been developed for the synthesis of 2,3-functionalized 1-indenones II. This protocol has several features including easy mild reaction conditions, stabilized enamine products, good tolerance of functional groups, and no external oxidants. The reaction enables direct derivatization on the indanone ring to provide valuable functionalized indenones at room temperature

This compound(Pyridine-4-thiol)Electric Literature of C5H5NS was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

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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 Robust quantitative SERS analysis with Relative Raman scattering intensities, published in 2021-01-01, which mentions a compound: 4556-23-4, Name is Pyridine-4-thiol, Molecular C5H5NS, Electric Literature of C5H5NS.

Robust quant. anal. methods are very attractive but challenging with surface-enhanced Raman scattering (SERS) technique till now. Quant. anal. methods using absolute Raman scattering intensities tend to desire very critical reproducibility of SERS substrates and consistency of testing conditions, as batch differences and inhomogeneity of SERS substrates as well as the fluctuation of measuring parameters placed challenging obstacles. Relative Raman scattering intensities, however, can release the adverse interferences mentioned above and provide effective and robust information as it is independent of the reproducibility of SERS substrates. By establishing external calibration working curves, the authors achieved accurate mol. composition prediction of mols. in multi-component systems. Further, by choosing or adding a label mol. with known concentration as Raman internal standards, the concentration of target mols. can be easily predicted. This approach proved the effectiveness and robustness of quant. anal. with the relative Raman scattering intensities, even carried out with a flexible inhomogeneous SERS substrate.

This compound(Pyridine-4-thiol)Electric Literature of C5H5NS was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

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Nitrile – Wikipedia,
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Das, Sumit Kumar; Bhattacharya, Tara Shankar; Chowdhury, Joydeep published an article about the compound: Pyridine-4-thiol( cas:4556-23-4,SMILESS:SC1=CC=NC=C1 ).Recommanded Product: Pyridine-4-thiol. 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:4556-23-4) through the article.

Reported the wavelength-scanned (WS) SERS spectra of 4-mercaptopyridine mols. (4-MPy) adsorbed on Au nanoparticles immobilized in a Langmuir Reverse Schaefer (L-RSh) film matrix of 5CB mols. The WS-SERS spectral profile exhibited an increment in the intensity of the enhanced Raman bands of 4-MPy with an increase in the wavelength of the excitation laser source. The rationale behind the exptl. observations was supported by the simulated extinction spectra and the enhancement factor measurements of the modeled systems using the T-matrix formalism. The SERS intensity fluctuations in the band located at 1000 cm-1 for the 4-MPy mol., as obtained from 3 different locations in the L-RSh film substrate, were analyzed. Depending on the spatial locations of the substrates, the intensity fluctuations of the abovementioned band exhibit both Poisson and Gaussian distributions but the maximum number of probe mols. that can reside in the scattering areas under study cannot exceed 16. Probably the origin of SERS from single/few mols. or from the ensemble-averaged system cannot be inferred from the statistical distributions of the Raman intensity fluctuations. The present exptl. observations also revealed the relation between the near-field plasmonic behaviors of the substrate with the corresponding far-field SERS spectra of the 4-MPy mol.

This compound(Pyridine-4-thiol)Recommanded Product: Pyridine-4-thiol was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

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Related Products of 4556-23-4. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Pyridine-4-thiol, is researched, Molecular C5H5NS, CAS is 4556-23-4, about Electrochemically Promoted Nickel-Catalyzed Carbon-Sulfur Bond Formation. Author is Wang, Yang; Deng, Lingling; Wang, Xiaochen; Wu, Zhengguang; Wang, Yi; Pan, Yi.

This work describes a nickel-catalyzed Ullmann-type thiolation of aryl iodides under mild electrochem. conditions. The simple undivided cell with graphite felt/nickel foam electrode setups offers excellent substrate tolerance, affording aryl and alkyl sulfides in good chem. yields. Furthermore, the mechanism for this electrochem. cross-coupling reaction has been investigated by cyclic voltammetry.

This compound(Pyridine-4-thiol)Related Products of 4556-23-4 was discussed at the molecular level, the effects of temperature and reaction time on the properties of the compound were discussed, and the optimum reaction conditions were selected.

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Nitrile – Wikipedia,
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Synthetic Route of C5H5NS. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Pyridine-4-thiol, is researched, Molecular C5H5NS, CAS is 4556-23-4, about Optical properties of two bismuth(III) halide hybrids with pyridyl sulfide derivative counter cations. Author is Wang, Zihan; Dan, Qingjuan; Zhao, Ruo-Yu; Xu, Rang-Dong; Liu, Guang-Ning; Li, Cuncheng.

Low dimensional organic-inorganic hybrid Bi(III) halides, especially those containing organic N, S-heterocycles are amazing as solid state photoluminescent materials, but remain less explored. Herein, two bismuth(III) halide compounds, (Etmp)4Bi2X10 (X = Cl for 1, Br for 2, Etmp = 4-(ethylthio)pyridin-1-ium), were obtained by employing pyridyl sulfide derivative as countercations. They are determined as zero-dimensional (0D) ionic structures, featuring binuclear bismuth halide anions charge-compensated by (Etmp)+ countercations. Solid-state UV-visible diffuse reflectance spectra reveal the wide optical band gaps of 3.20 eV for 1 and 2.67 eV for 2. Notably, 1 exhibits a strong green photoluminescence emission with a quantum yield of 20%, and a CIE chromaticity coordinate of (0.27, 0.36) when irradiated by a 394-nm light. Theor. calculations suggest that the charge transition between Cl-3p and p-π* anti-bonding orbital of (Etmp)+ is responsible for the emission.

《Optical properties of two bismuth(III) halide hybrids with pyridyl sulfide derivative counter cations》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(Pyridine-4-thiol)Synthetic Route of C5H5NS.

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Nitrile – Wikipedia,
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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 Gold-patterned microarray chips for ultrasensitive surface-enhanced Raman scattering detection of ultratrace samples, published in 2019, which mentions a compound: 4556-23-4, Name is Pyridine-4-thiol, Molecular C5H5NS, Electric Literature of C5H5NS.

This paper reports the fabrication of gold-patterned microarray chips for fast and ultrasensitive surface enhanced Raman scattering (SERS) detection of trace samples. By micro-nano machining based on electron-beam lithog., magnetron sputtering, and chem. modification, gold-patterned microarray chips with hydrophilic and hydrophobic periodic structures are fabricated, and a polyethylene glycol (PEG) layer is coated on the surface of the gold well, making the chips long-term stable. The hydrophilic surface of each gold well is surrounded by a hydrophobic layer, which makes the ultratrace sample amount for SERS measurement only 0.3μl. In the detection of malachite green (MG), 4-mercaptopyridine (4-MPY), rhodamine 6G (R6G), and melamine, great enhanced SERS signals with the detection limit reaching nM level can be achieved due to the enrichment effect of the periodic structures and the hot-spots generated between the sandwich structure built on the gold wells. Such gold-patterned microarray chip is promising in fast and ultrasensitive SERS detection of various chem. and biol. species with trace amount

《Gold-patterned microarray chips for ultrasensitive surface-enhanced Raman scattering detection of ultratrace samples》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(Pyridine-4-thiol)Electric Literature of C5H5NS.

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Nitrile – Wikipedia,
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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Pyridine-4-thiol(SMILESS: SC1=CC=NC=C1,cas:4556-23-4) is researched.COA of Formula: C21H16N2. The article 《Long-Range Surface Plasmon Resonance Configuration for Enhancing SERS with an Adjustable Refractive Index Sample Buffer to Maintain the Symmetry Condition》 in relation to this compound, is published in ACS Omega. Let’s take a look at the latest research on this compound (cas:4556-23-4).

We propose a method to maintain the symmetry condition of the refractive index with respect to a dielec. buffer layer for a long-range surface plasmon resonance (LRSPR) configuration. The symmetry condition was maintained by changing the concentration of the ethylene glycol aqueous solution (sample buffer layer) to match the refractive index of the MgF2 film. Maintenance of the symmetry condition is necessary for exciting the LRSPR mode and increasing the elec. field intensity near the film. We used a four-phase Kretschmann resonance setup composed of a K9 prism, MgF2 film, Ag film, and sample buffer layer. The incident angle-dependent surface-enhanced Raman scattering (SERS) spectra were measured in the evanescent field. At the SPR angle, the SERS signal of the sym. configuration was 60 times higher than that of the conventional SPR configuration. Moreover, the elec. field penetration depth of the sym. long-range surface plasmon configuration (>1000 nm) was longer than that of their asym. counterparts. The enhancement factor of the sym. configuration was 8.6 x 107, which corresponded to the lowest detectable concentration for 4-mercaptopyridine, reaching 1.0 x 10-10 M at the resonance angle. Thus, the sym. LRSPR configuration has great potential for label-free sensing and detection of macromols. and biomols.

《Long-Range Surface Plasmon Resonance Configuration for Enhancing SERS with an Adjustable Refractive Index Sample Buffer to Maintain the Symmetry Condition》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(Pyridine-4-thiol)Application In Synthesis of Pyridine-4-thiol.

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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.Schumacher, Christian; Fergen, Hannah; Puttreddy, Rakesh; Truong, Khai-Nghi; Rinesch, Torsten; Rissanen, Kari; Bolm, Carsten researched the compound: Pyridine-4-thiol( cas:4556-23-4 ).Product Details of 4556-23-4.They published the article 《N-(2,3,5,6-Tetrafluoropyridyl)sulfoximines: synthesis, X-ray crystallography, and halogen bonding》 about this compound( cas:4556-23-4 ) in Organic Chemistry Frontiers. Keywords: tetrafluoropyridyl sulfoximine preparation crystal mol structure; arylsulfoximine pentafluoropyridine mechanochem reation; halogen bonding Hirshfeld surface analysis. We’ll tell you more about this compound (cas:4556-23-4).

In the presence of KOH, NH-sulfoximines react with pentafluoropyridine to give N-(tetrafluoropyridyl)sulfoximines (NTFP-sulfoximines) I (R1 = Me, Ph, 4-MeC6H4, 4-ClC6H4, etc.; R = Me, i-Pr, 2-Py, 2-thiophenyl, etc.; ) in moderate to excellent yields. Either a solution-based or a superior solvent-free mechanochem. protocol can be followed. X-Ray diffraction analyses of 26 products provided insight into the bond parameters and conformational rigidity of the mol. scaffold. In solid-state structures, sulfoximines with halo substituents on the S-bound arene are intermolecularly linked by C-X···O=S (X = Cl, Br) halogen bonds. Hirshfeld surface anal. is used to assess the type of non-covalent contacts present in mols. For mixtures of three different S-pyridyl-substituted NTFP-sulfoximines and N-iodosuccinimide (NIS) in CDCl3, association constants were determined by 1H NMR spectroscopy. The data revealed a dependence of the halogen bond strength on the position of the pyridyl nitrogen indicating the presence of N-I···N(S-pyridyl) interactions. Neither the S=O oxygen nor the tetrafluoropyridyl-substituted nitrogen of the sulfoximine appeared to be involved in halogen bonding.

Different reactions of this compound(Pyridine-4-thiol)Product Details of 4556-23-4 require different conditions, so the reaction conditions are very important.

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Leong, Yong Xiang; Lee, Yih Hong; Koh, Charlynn Sher Lin; Phan-Quang, Gia Chuong; Han, Xuemei; Phang, In Yee; Ling, Xing Yi published an article about the compound: Pyridine-4-thiol( cas:4556-23-4,SMILESS:SC1=CC=NC=C1 ).Application In Synthesis of Pyridine-4-thiol. 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:4556-23-4) through the article.

Integrating machine learning with surface-enhanced Raman scattering (SERS) accelerates the development of practical sensing devices. Such integration, in combination with direct detection or indirect analyte capturing strategies, is key to achieving high predictive accuracies even in complex matrixes. However, in-depth understanding of spectral variations arising from specific chem. interactions is essential to prevent model overfit. Herein, we design a machine-learning-driven “”SERS taster”” to simultaneously harness useful vibrational information from multiple receptors for enhanced multiplex profiling of five wine flavor mols. at parts-per-million levels. Our receptors employ numerous noncovalent interactions to capture chem. functionalities within flavor mols. By strategically combining all receptor-flavor SERS spectra, we construct comprehensive “”SERS superprofiles”” for predictive analytics using chemometrics. We elucidate crucial mol.-level interactions in flavor identification and further demonstrate the differentiation of primary, secondary, and tertiary alc. functionalities. Our SERS taster also achieves perfect accuracies in multiplex flavor quantification in an artificial wine matrix.

The article 《Surface-Enhanced Raman Scattering (SERS) Taster: A Machine-Learning-Driven Multireceptor Platform for Multiplex Profiling of Wine Flavors》 also mentions many details about this compound(4556-23-4)Application In Synthesis of Pyridine-4-thiol, you can pay attention to it, because details determine success or failure

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 4556-23-4, is researched, SMILESS is SC1=CC=NC=C1, Molecular C5H5NSJournal, Guangpuxue Yu Guangpu Fenxi called Probing SERS with MPY molecules from LaNiO3/Au nanofibers, Author is Zhao, Qing-nan; Song, Wei, the main research direction is SERS thiopyridine mol lanthanum nickelate gold nanofiber.Formula: C5H5NS.

The polymer nanofibers prepared by electrospinning could be used as surface-enhanced Raman substrate due to its advantages of high surface area/volume ratio, high porosity, light weight and good mech. strength, and could also be used to study the SERS influence of adsorbed probe mols. on the surface of gold-doped nanofibers. Recently, our research group proposed a SERS substrate for polyacrylonitrile/Ag nanoparticles composite nanofibers prepared by electrospinning technol., which could achieve uniform doping of metal nanoparticles in the nanofibers and better SERS enhancement of probe mols. Based on the above research results, we designed the SERS substrate of LaNiO3 nanofibers doped with Au nanoparticles, and discussed the SERS influence of the probe mol. 4-thiopyridine (MPY) of LaNiO3/Au nanofibers.

The article 《Probing SERS with MPY molecules from LaNiO3/Au nanofibers》 also mentions many details about this compound(4556-23-4)Formula: C5H5NS, you can pay attention to it, because details determine success or failure

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