Category: 636-73-7

On May 31, 1999, Decristoforo, Clemens; Mather, Stephen J. published an article.Product Details of 636-73-7 The title of the article was 99M-technetium-labelled peptide-HYNIC conjugates: Effects of lipophilicity and stability on biodistribution. And the article contained the following:

The aim of this study was to explore the effects of lipophilicity and stability on the biodistribution of 99mTc labeled peptides through the use of different co-ligands. 6-Hydrazinopyridine-3-carboxylic acid (HYNIC) was coupled to the somatostatin analog RC160 and radiolabeled using a range of ethylenediaminediacetic acid (EDDA) and EDTA derivatives as well as tricine and pyridine/tricine as co-ligands. After labeling with technetium-99m, chromatog., stability, protein-binding, and rat biodistribution studies were performed. For most co-ligands, biodistribution correlated well with in vitro properties. Lipophilic substitution on EDDA resulted in higher protein binding, increased liver uptake, and intestinal excretion. Stabilization of tricine with pyridines reduced blood levels and lowered liver uptake. EDTA derivatives showed high instability in vitro and in vivo. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Product Details of 636-73-7

The Article related to technetium 99m somatostatin analog complex biodistribution, rc160 hynic technetium 99m complex biodistribution, Radiation Biochemistry: Disease Diagnosis and Therapy and other aspects.Product Details of 636-73-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On May 24, 1991, Karaman, Rafik; Bruice, Thomas C. published an article.Computed Properties of 636-73-7 The title of the article was Synthesis and characterization of the first water-soluble closely interspaced cofacial porphyrin dimer. And the article contained the following:

The only documented example of a quadruply-bridged, closely-interspaced cofacial porphyrin dimer was synthesized by Kagan (1977). The target of this communication is the synthesis and characterization of the first water soluble quadruply-bridged, closely-interspaced cofacial porphyrin I (R = R1). Reaction of meso-tetrakis(3-bromomethylphenyl)porphyrin with m-pyridinesulfonamide provides the closely-interspaced cofacial porphyrin dimer I (R = R2) which on quaternization with MeI provides the water soluble I (R = R1). Reactions of I with Zn(OAc)2 provided the corresponding bis-zinc complexes I. Porphyrins I and their bis-zinc complexes, exist in a closed down conformation with closely approaching porphyrin planes or in an open conformation. It was established, on the basis of 1H-NMR UV/vis, and emission spectrophotometries, and I (R = R2) exists in a closed down conformation in DMSO or acetone and a more open conformation is CHCl3. With zinc complexes of I (or protonated I) the conformation is open regardless of the solvent. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Computed Properties of 636-73-7

The Article related to porphyrin dimer quadruply bridged conformation, tetrakisbromoethylphenylporphyrin alkylation pyridinesulfonamide, Biomolecules and Their Synthetic Analogs: Corrinoids, Porphyrins, and Bilines and other aspects.Computed Properties of 636-73-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On June 3, 1992, Karaman, Rafik; Blasko, Andrei; Almarsson, Orn; Arasasingham, Ramesh; Bruice, Thomas C. published an article.Electric Literature of 636-73-7 The title of the article was Symmetrical and unsymmetrical quadruply aza-bridged, closely interspaced, cofacial bis(5,10,15,20-tetraphenylporphyrin)s. 2. Synthesis, characterization, and conformational effects of solvents. And the article contained the following:

Title compounds I [X = NR, R = 3-pyridylsulfonyl (R1), 1-methylpyridinium-3-sulfonyl (R2), CONH2, cyano, tosyl; X = OCO2, R = R1, cyano] have been synthesized and fully characterized by 2-dimensional 1H-1H NMR (COSY), 2-dimensional 13C-1H NMR, fast-atom-bombardment mass spectrometry, UV/vis, IR, and fluorescence spectral techniques. It was established, on the basis of 1H NMR, UV/vis, and emission spectrophotometries, that I (X = NR, R = R1, R2, tosyl) exist in more than one conformational in DMSO and in only one sym. conformation in CHCl3. Their biszinc complexes and tetraprotonated derivatives exist in one conformation regardless of the solvent. These observations have been attributed to an interaction between DMSO and the pyrrolic N-H protons of the porphyrin cores which is inhibited by metalation or protonation. Mol. dynamics calculations reveal that the intracavity interactions of I (X = NR, R = R1) with DMSO are more important than the intercavity interactions which result in discrete, unsym. conformations of the dimer. In contrast, I (X = OCO2, R = R1, cyano; X = NR, R = cyano, CONH2) do not show any conformational changes upon switching from CHCl3 to DMSO. This is attributed to the long interplanar distances calculated for the porphyrin dimers which prevent intracavity coordination of DMSO with both porphyrin moieties. 1H NMR variable-temperature experiments of I (X = NR, R = R1) in DMSO show that the conformation of the dimer is greatly affected by temperature While at room temperature I (X = NR, R = R1) exists in more than one conformation, at higher temperatures (150°) only one conformation is populated. It is proposed that at room temperature, the existence of a H-bonding network between DMSO and the dimer results in more than one conformation, while at higher temperatures the network is destroyed to furnish an average conformation. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Electric Literature of 636-73-7

The Article related to porphyrin dimer preparation conformation, Biomolecules and Their Synthetic Analogs: Corrinoids, Porphyrins, and Bilines and other aspects.Electric Literature of 636-73-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On March 31, 2008, Ramya, G.; Renugadevi, C.; Rao, Chepuri R. K.; Trivedi, D. C. published an article.Application In Synthesis of Pyridine-3-sulfonic acid The title of the article was Investigations on pyridine-3-sulfonic acid doped polyaniline and polypyrrole: Metal loading through dopant molecules. And the article contained the following:

Polyniline and polypyrrole were chem. and electrochem. synthesized in presence of pyridine-3-sulfonic acid. These conducting polymers were characterized by FT-IR, UV-vis, XRD, TGA and SEM techniques. Polyaniline showed a conductivity of 4 × 10-4 S/cm while polypyrrole exhibited a conductivity of 6.2 × 10-2 S/cm. The presence of pyridine ring in the dopant enabled the polymers to anchor Pd/or PdO through which the composite can work as catalytic material. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Application In Synthesis of Pyridine-3-sulfonic acid

The Article related to pyridine sulfonic acid dopant polyaniline polypyrrole metal conductivity elec, Plastics Manufacture and Processing: Physical Properties and Testing Methods and other aspects.Application In Synthesis of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On August 10, 2004, Winther-Jensen, Bjorn; Chen, Jun; West, Keld; Wallace, Gordon published an article.Application In Synthesis of Pyridine-3-sulfonic acid The title of the article was Vapor Phase Polymerization of Pyrrole and Thiophene Using Iron(III) Sulfonates as Oxidizing Agents. And the article contained the following:

Vapor phase polymerization is a versatile technique that can be used to obtain highly conducting coatings of conjugated polymer on both conducting and nonconducting substrates. This is demonstrated here by preparation of polypyrrole, polybithiophene, and polyterthiophene, coatings that otherwise must be prepared electrochem. in order to achieve the desired high conjugation. The method is based on the use of organic ferric sulfonates as oxidant as these salts easily form smooth, noncrystalline films. By proper choice of the sulfonate anion, the oxidizing power of the ferric salt can be varied over a wide range. The described technique can easily be adapted to different patterning techniques. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Application In Synthesis of Pyridine-3-sulfonic acid

The Article related to pyrrole thiophene vapor phase polymerization iron sulfonate oxidant, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Application In Synthesis of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On December 31, 2021, Oh, In-Chan; Kim, Ho-Young; Hyun, Soong-Keun; Byoun, Young-Min published an article.Quality Control of Pyridine-3-sulfonic acid The title of the article was Characterization of palladium electrodeposition in ammonia-free electrolyte with additives. And the article contained the following:

Electrodeposition of Pd provides excellent chem. and low-contact resistance with good elec. properties, such as different types of elec. contacts in the electronics industry. The conventional Pd plating process utilizes ammonia-based electrolytes. Ammonia was added continuously to maintain the optimum pH range in Pd electrolyte. In addition, the harmful and strong odor of the evaporating ammonia necessitates the use of a ventilator. A further disadvantage is that the brass substrate is corroded by ammonia vapor, and the corrosion products can contaminate the electrolytes, thereby changing the technol. properties of the deposited plating for the worse. Ethylenediamine has been proposed as an alternative to ammonia; however, Pd electrodeposition occurs as microcracks via hydrogen evolution. In this study, the effects of Pd electrolyte on ethylenediamine as a complexing agent and the properties of various additives are investigated to improve c.d. and internal stress in Pd electrodeposition that occurs on a brass substrate. Therefore, complexing agents such as 3-pyridine sulfonic acid, sodium nicotinate, butyne 1-4 diol, and sodium allylsulfonate are selected as additives, to serve as an alternative to ammonia in Pd electrolyte. In this study, the properties of electrodeposited Pd with various additives were examined The effect of additives on Pd electrolytes can be classified as dense surfaces without defects such as microcracks and pinholes, which improved surface roughness and corrosion resistance. Particularly, Pd electrolyte using sodium nicotinate has relatively improved surface roughness and properties. Pd electrolyte was optimized under ammonia-free conditions by the addition of sodium nicotinate. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Quality Control of Pyridine-3-sulfonic acid

The Article related to palladium electrodeposition ethylenediamine electrolyte additive surface roughness elec property, Electrochemistry: Electrodes, Electrode Reactions, and Electrode Potentials and other aspects.Quality Control of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On February 20, 2017, Zhu, Yinggui; Zhao, Min; Hu, Xiaojuan; Wang, Xiaofang; Wang, Ling published an article.Safety of Pyridine-3-sulfonic acid The title of the article was Electrogenerated chemiluminescence behavior of Tb complex and its application in sensitive sensing Cd2+. And the article contained the following:

The authors report a novel rare earth metal complex with the weak ligand of aromatic sulfonic acid (pyridine-3-sulfonic acid, 3-pSO3H), and characterized by FTIR, UV-visible, energy-dispersive x-ray spectroscopy (EDX), electrochemiluminescence spectra, etc. Then an excellent electrochemiluminescence (ECL) signal was observed with K2S2O8 as the coreactant in NaAc-HAc buffer solution For another thing, the electrochem. properties of the compound were thoroughly studied in MeCN solution, the possible ECL reaction mechanism is proposed as well. Also, a simple and straightforward ECL platform is reported for sensitive and selective detection of Cd2+ due to the effective quenching after addition of Cd2+. Other heavy/transition metal ions do not interfere with the sensing. The limit of detection is determined as 0.13 nM, the results suggested that as-prepared complex could be a promising material for developing ECL sensors to detect the Cd2+ rapidly indwell in environmental and practical samples. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Safety of Pyridine-3-sulfonic acid

The Article related to electrogenerated chemiluminescence terbium complex sensing cadmium, Electrochemistry: Electrodes, Electrode Reactions, and Electrode Potentials and other aspects.Safety of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On July 15, 2013, Duan, Lele; Wang, Lei; Inge, A. Ken; Fischer, Andreas; Zou, Xiaodong; Sun, Licheng published an article.Category: pyridine-derivatives The title of the article was Insights into Ru-Based Molecular Water Oxidation Catalysts: Electronic and Noncovalent-Interaction Effects on Their Catalytic Activities. And the article contained the following:

A series of Ru-bda water oxidation catalysts [Ru(bda)L2] (H2bda = 2,2′-bipyridine-6,6′-dicarboxylic acid; L = [HNEt3][3-SO3-pyridine], 1; 4-(EtOOC)-pyridine, 2; 4-bromopyridine, 3; pyridine, 4; 4-methoxypyridine, 5; 4-(Me2N)-pyridine, 6; 4-[Ph(CH2)3]-pyridine, 7) were synthesized with electron-donating/-withdrawing groups and hydrophilic/hydrophobic groups in the axial ligands. These complexes were characterized by 1H NMR spectroscopy, high-resolution mass spectrometry, elemental anal., and electrochem. In addition, complexes 1 and 6 were further identified by single crystal X-ray crystallog., revealing a highly distorted octahedral configuration of the Ru coordination sphere. All of these complexes are highly active toward CeIV-driven (CeIV = Ce(NH4)2(NO3)6) water oxidation with oxygen evolution rates up to 119 mols of O2 per mol of catalyst per s. Their structure-activity relationship was investigated. Electron-withdrawing and noncovalent interactions (attraction) exhibit pos. effect on the catalytic activity of Ru-bda catalysts. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Category: pyridine-derivatives

The Article related to ruthenium based mol water oxidation catalyst electronic noncovalent interaction, Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms: Reaction Kinetics and other aspects.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On March 12, 2007, Korthals, Brigitte; Goettker-Schnetmann, Inigo; Mecking, Stefan published an article.Quality Control of Pyridine-3-sulfonic acid The title of the article was Nickel(II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-κ2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems. And the article contained the following:

Neutral (salicylaldiminato)nickel(II) Me complexes [{6-C(H):NAr-2,4-I2C6H2O-κ2N,O}NiMe(L)] (Ar = 2,6-{3,5-(F3C)2C6H3}2C6H3) with different water-soluble ligands L (2a, L = 1,3,5-triaza-7-phosphaadamantane; 2b, L = hexamethylenetetramine (urotropine); 2c, L = tetraethylammonium pyridine-3-sulfonate; 2d, L = amino-terminated poly(ethylene glycol) monomethoxy ether) were prepared 2A-d are potentially water-soluble catalyst precursors for ethylene polymerization, which form a water-insoluble active site [{κ2-N,O}NiR(ethylene)] (R = growing chain). Only complex 2d was water-soluble (>2 mmol L-1); 2c is soluble in water/2-propanol mixtures In toluene as a reaction medium, only the relatively weakly coordinated tertiary amine complex 2b is polymerization active (1.7 × 104 TO). In aqueous systems 2c,d are also active due to compartmentalization of the active site in the polymer particles and of L in the aqueous phase. Polyethylene particle sizes vary from 18 nm (dispersions formed with 2d) to over 0.5 μm (2c) to suspensions (2b) depending on the initial state of the reaction mixture, correlated with catalyst solubility The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Quality Control of Pyridine-3-sulfonic acid

The Article related to salicylaldiminato nickel methyl water soluble ligand complex preparation catalyst, polymerization catalyst salicylaldiminato nickel methyl water soluble ligand complex, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.Quality Control of Pyridine-3-sulfonic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On November 1, 1992, Schmuelling, M.; Ryabov, A. D.; Van Eldik, R. published an article.Computed Properties of 636-73-7 The title of the article was Steric and electronic tuning of the lability of square planar d8 metal complexes: platinum(II) ≡ palladium(II). And the article contained the following:

Electronic tuning of PtII complexes via cyclometalation, i.e. the introduction of a Pt-C bond trans to the leaving ligand, can increase their lability to that of related PdII complexes. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Computed Properties of 636-73-7

The Article related to ortho platinated aminomethylphenyl preparation substitution kinetics, platinum square planar aminomethylphenyl substitution kinetics, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.Computed Properties of 636-73-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem