Month: October 2022

Pyridine is colorless, but older or impure samples can appear yellow. 16133-25-8, formula is C5H4ClNO2S, Name is Pyridine-3-sulfonyl chloride. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. Category: pyridine-derivatives.

Luo, Lihua;Tang, Juan;Sun, Rui;Li, Wenjing;Zheng, Xueli;Yuan, Maoling;Li, Ruixiang;Chen, Hua;Fu, Haiyan research published 《 Direct C-H Sulfonylimination of Pyridinium Salts》, the research content is summarized as follows. A direct pyridinium C-H sulfonylimination has been developed for the synthesis of sulfonyl iminopyridine derivatives I (R = H, CN, Ph, thiophen-2-yl, etc.; R¹ = H, OMe, Ph, thiophen-3-yl, etc.; R² = H, cyclopropyl, Ph, 4-bromophenyl, etc.; R¹R² = -CH=CH-CH=CH-; R³ = Me, Et, i-Pr, etc.; R⁴ = Et, Ph, pyridin-3-yl, etc.) with high efficiency. This transformation features the direct and efficient formation of a C=N bond with a high functional group tolerance under metal-free conditions. The spectroscopic properties potentially enable these sulfonyl iminopyridine compounds I to be useful new emitting materials.

16133-25-8, Pyridine-3-sulfonyl chloride is a useful research compound. Its molecular formula is C5H4ClNO2S and its molecular weight is 177.61 g/mol. The purity is usually 95%.
Pyridine-3-sulfonyl chloride is a reagent used in the synthesis of pyrimidine derivatives with anti-proliferative activity against negative breast cancer cells.
Pyridine-3-sulfonyl chloride is a chemical compound that binds to the active site of cytochrome P450 enzymes. It can be used to study the effects of matrix effect on reaction solution. Pyridine-3-sulfonyl chloride has been shown to have an UV absorption spectrum with a maximum at 280 nm and a p450 activity that is proportional to the concentration of human serum. This compound has been shown to inhibit kinase domain in vitro assays, which may have clinical relevance in the treatment of obesity., Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

At 25 °C pyridine has a viscosity of 0.88 mPa/s and thermal conductivity of 0.166 W·m−1·K−1. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. The enthalpy of vaporization is 35.09 kJ·mol−1 at the boiling point and normal pressure.The enthalpy of fusion is 8.28 kJ·mol−1 at the melting point. Safety of 5-Bromopicolinaldehyde.

Luis, Ena T.;Iranmanesh, Hasti;Arachchige, Kasun S. A.;Donald, William A.;Quach, Gina;Moore, Evan G.;Beves, Jonathon E. research published 《 Luminescent Tetrahedral Molecular Cages Containing Ruthenium(II) Chromophores》, the research content is summarized as follows. The authors have designed linear metalloligands which contain a central photoactive [Ru(NN̂)₃]²⁺ unit bordered by peripheral metal binding sites. The combination of these metalloligands with Zn(II) and Fe(II) ions leads to heterometallic tetrahedral cages, which were studied by NMR spectroscopy, mass spectrometry, and photophys. methods. Like the parent metalloligands, the cages remain emissive in solution This approach allows direct incorporation of the favorable properties of ruthenium(II) polypyridyl complexes into larger self-assembled structures.

31181-90-5, 5-Bromopyridine-2-carbaldehyde is a useful research compound. Its molecular formula is C6H4BrNO and its molecular weight is 186.01 g/mol. The purity is usually 95%.

5-Bromopyridine-2-carbaldehyde is a water soluble organic molecule that has been shown to inhibit the mitochondrial respiratory chain. It is a structural analog of the natural substrate for mitochondrial cytochrome c oxidase, 5-aminolevulinic acid. This compound has been shown to be selective against cancer cells and has anti-viral properties. The photophysical properties of 5-bromopyridine-2-carbaldehyde have been studied extensively. The fluorescence quantum yield of this molecule in aqueous solution is 0.06%., Safety of 5-Bromopicolinaldehyde

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The critical parameters of pyridine are pressure 6.70 MPa, temperature 620 K and volume 229 cm3·mol−1. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. In the temperature range 340–426 °C its vapor pressure p can be described with the Antoine equation.. Reference of 766-11-0.

Lucas-Hourani, Marianne;Munier-Lehmann, Helene;El Mazouni, Farah;Malmquist, Nicholas A.;Harpon, Jane;Coutant, Eloi P.;Guillou, Sandrine;Helynck, Olivier;Noel, Anne;Scherf, Artur;Phillips, Margaret A.;Tangy, Frederic;Vidalain, Pierre-Olivier;Janin, Yves L. research published 《 Original 2-(3-Alkoxy-1H-pyrazol-1-yl)azines Inhibitors of Human Dihydroorotate Dehydrogenase (DHODH)》, the research content is summarized as follows. Following our discovery of human dihydroorotate dehydrogenase (DHODH) inhibition by 2-(3-alkoxy-1H-pyrazol-1-yl)pyrimidine derivatives as well as 2-(4-benzyl-3-ethoxy-5-methyl-1H-pyrazol-1-yl)-5-methylpyridine, we describe here the syntheses and evaluation of an array of azine-bearing analogs. As in our previous report, the structure-activity study of this series of human DHODH inhibitors was based on a phenotypic assay measuring measles virus replication. Among other inhibitors, this round of syntheses and biol. evaluation iteration led to the highly active 5-cyclopropyl-2-(4-(2,6-difluorophenoxy)-3-isopropoxy-5-methyl-1H-pyrazol-1-yl)-3-fluoropyridine (I). Inhibition of DHODH by this compoundI was confirmed in an array of in vitro assays, including enzymic tests and cell-based assays for viral replication and cellular growth. I was found to be more active than the known inhibitors of DHODH, brequinar and teriflunomide, thus opening perspectives for its use as a tool or for the design of an original series of immunosuppressive agent. Moreover, because other series of inhibitors of human DHODH have been found to also affect Plasmodium falciparum DHODH, all the compounds were assayed for their effect on P. falciparum growth. However, the modest in vitro inhibition solely observed for two compounds did not correlate with their inhibition of P. falciparum DHODH.

Reference of 766-11-0, 5-Bromo-2-fluoropyridine is a useful research compound. Its molecular formula is C5H3BrFN and its molecular weight is 175.99 g/mol. The purity is usually 95%.
5-Bromo-2-fluoropyridine is a boronic acid that has been shown to react with iodides and form 5-bromo-2-fluoroiodobenzene. The reaction of 5-bromo-2-fluoropyridine with benzene gives the same product as the reaction with 1,3,5-trioxane. The UV absorption of 5-bromo-2-fluoropyridine is found at 230 nm and 260 nm. It also has an absorption band in the infrared region at 1625 cm−1. Vibrational progressions have been observed for this molecule, which are due to dipole moments and electron density distributions in the molecule.
5-bromo-2-fluoropyridine is used in the synthesis of heteroaromatic and aniline derivatives of piperidines as potent ligands used for vesicular acetylcholine transport. , 766-11-0.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Application of C6H4BrNO.

Lu, Yinfu;Li, Xin;Wang, Jinglan;Zhao, Feng;Wang, Yibo;He, Haifeng;Wu, Yaqian research published 《 Synthesis, characterization and DFT studies of luminescent copper(I) complexes containing pyridine-imidazole ligands with tunable π-conjugation system via variation of polyaromatic groups》, the research content is summarized as follows. The three Cu(I) complexes [Cu(POP)(NN′)]PF₆, NN′ = 2-(1H-imidazol-2-yl)-5-(naphthalen-2-ylethynyl)pyridine (P1), 2-(1H-imidazol-2-yl)-5-(phenanthren-9-ylethynyl)pyridine (P2), 2-(5-(naphthalen-2-ylethynyl)pyridin-2-yl)-1H-phenanthro[9,10-d]imidazole (P3), were prepared and characterized. The photophys. properties of these Cu(I) complexes is tuned by extending π- system of the NN′ ligand through the addition of polyaromatic groups such as naphthalene and phenanthrene into the pyridine ring part of the diimine ligands via an acetylide linker or phenanthrene-fused imidazole ring. The resulting complexes exhibit higher absorption ability in the visible region. The emissions are in the range of 582-601 nm with quantum yields of 2.30-7.70% and the excited lifetimes of 77.4-115.8 μs for all complexes at room temperature The photophys. properties were further explained by DFT and TDDFT methods.

31181-90-5, 5-Bromopyridine-2-carbaldehyde is a useful research compound. Its molecular formula is C6H4BrNO and its molecular weight is 186.01 g/mol. The purity is usually 95%.

5-Bromopyridine-2-carbaldehyde is a water soluble organic molecule that has been shown to inhibit the mitochondrial respiratory chain. It is a structural analog of the natural substrate for mitochondrial cytochrome c oxidase, 5-aminolevulinic acid. This compound has been shown to be selective against cancer cells and has anti-viral properties. The photophysical properties of 5-bromopyridine-2-carbaldehyde have been studied extensively. The fluorescence quantum yield of this molecule in aqueous solution is 0.06%., Application of C6H4BrNO

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Reference of 31181-90-5.

Lu, Yinfu;Wang, Jinglan;Wu, Yaqian;Xu, Shengxian;Zhao, Feng;Wang, Yibo research published 《 Orange-red emissive N-hetercycle carbene (NHC) Cu(I) complexes bearing benzimidazolylidene-type ligands: Synthesis, structures, and photophysical properties》, the research content is summarized as follows. Herein, three four-coordinate N-hetercycle carbene (NHC) copper (I) complexes of the types [Cu(BenDimBenIm-CHOPy)(POP)]PF6 (P1), [Cu(BenDimBenIm-CNPy)(POP)]PF6 (P2), and [Cu(DimbenDimBenIm-CNPy)(POP)]PF6 (P3) (BenDimBenIm-CHOPy = 3-benzyl-1-(5-formyl -pyridin-2-yl)-1H-5,6-dimethylbenzimidazolylidene, BenDimBenIm-CNPy = 3-benzyl-1-(5-cyano -pyridin-2-yl)-1H-5,6-dimethylbenzimidazolylidene, DimbenDimBenIm-CNPy = 3-(3,5-dimethylbenzyl-1-(5-cyano-pyridin-2-yl)-1H-5,6-dimethylbenzimidazolylidene, POP = bis[2-diphenylphosphino]-phenyl)ether) have been prepared and investigated. All complexes exhibit the lowest energy metal-to-ligand charge transfer (MLCT) characters in 320-360 nm region showing a slight blue-shift of the absorption maxima in the order P1 > P2 > P3. The emissive wavelength can be fine-tuned to cover the orange-red spectral range of 615-638 nm with higher photoluminescence quantum yields (PLQY) of 17.6-40.3 %. Addnl., the photophys. properties are also investigated theor. using d. functional theory (DFT) and time dependent DFT.

Reference of 31181-90-5, 5-Bromopyridine-2-carbaldehyde is a useful research compound. Its molecular formula is C6H4BrNO and its molecular weight is 186.01 g/mol. The purity is usually 95%.

5-Bromopyridine-2-carbaldehyde is a water soluble organic molecule that has been shown to inhibit the mitochondrial respiratory chain. It is a structural analog of the natural substrate for mitochondrial cytochrome c oxidase, 5-aminolevulinic acid. This compound has been shown to be selective against cancer cells and has anti-viral properties. The photophysical properties of 5-bromopyridine-2-carbaldehyde have been studied extensively. The fluorescence quantum yield of this molecule in aqueous solution is 0.06%., 31181-90-5.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is colorless, but older or impure samples can appear yellow. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. Product Details of C6H4BrNO.

Lu, Yan-Ju;Zhao, Zhen-Dong;Chen, Yu-Xiang;Wang, Jing;Xu, Shi-Chao;Gu, Yan research published 《 Synthesis and biological activity of pyridine acylhydrazone derivatives of isopimaric acid》, the research content is summarized as follows. Pyridine acylhydrazone derivatives of isopimaric acid, e.g., I were synthesized and characterized. The min. inhibitory concentrations of the compounds against five bacteria were determined and most of the compounds displayed some degree of antibacterial activity. The results showed that antimicrobial activity against Streptococcus pneumoniae improved when halogen atoms were introduced into the isopimaric acid, especially when one bromine atom was introduced in the para-position of isopimaric acid. Compound I exhibited a significant antitumorial activity against hepatocarcioma cells (HepG-2) and breast cancer cells (MDA-MB-231), with inhibition degrees of 74.21% and 70.39%, resp., at 100μM.

Product Details of C6H4BrNO, 5-Bromopyridine-2-carbaldehyde is a useful research compound. Its molecular formula is C6H4BrNO and its molecular weight is 186.01 g/mol. The purity is usually 95%.

5-Bromopyridine-2-carbaldehyde is a water soluble organic molecule that has been shown to inhibit the mitochondrial respiratory chain. It is a structural analog of the natural substrate for mitochondrial cytochrome c oxidase, 5-aminolevulinic acid. This compound has been shown to be selective against cancer cells and has anti-viral properties. The photophysical properties of 5-bromopyridine-2-carbaldehyde have been studied extensively. The fluorescence quantum yield of this molecule in aqueous solution is 0.06%., 31181-90-5.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. SDS of cas: 766-11-0.

Lu, Ju-You;Zhao, Bo;Du, Yongmei;Yang, Jianxin;Lu, Jian research published 《 Transition-metal-free direct nucleophilic substitution of carboranyllithium and 2-halopyridines》, the research content is summarized as follows. A practical and efficient C(cage)-heteroarylation of carborane is presented, via direct nucleophilic substitution of carboranyllithium with 2-halopyridines. This reaction does not need the aid of any transition metal and utilizes readily available carboranyllithium nucleophiles, thereby avoiding transmetalation of carboranyllithium. The process exhibits a broad scope, and a vast array of 2-halopyridines have proven to be suitable substrates. The method serves as a complement to C(cage)-arylation reactions and may find wide applications in materials science and medicinal and coordination chem.

SDS of cas: 766-11-0, 5-Bromo-2-fluoropyridine is a useful research compound. Its molecular formula is C5H3BrFN and its molecular weight is 175.99 g/mol. The purity is usually 95%.
5-Bromo-2-fluoropyridine is a boronic acid that has been shown to react with iodides and form 5-bromo-2-fluoroiodobenzene. The reaction of 5-bromo-2-fluoropyridine with benzene gives the same product as the reaction with 1,3,5-trioxane. The UV absorption of 5-bromo-2-fluoropyridine is found at 230 nm and 260 nm. It also has an absorption band in the infrared region at 1625 cm−1. Vibrational progressions have been observed for this molecule, which are due to dipole moments and electron density distributions in the molecule.
5-bromo-2-fluoropyridine is used in the synthesis of heteroaromatic and aniline derivatives of piperidines as potent ligands used for vesicular acetylcholine transport. , 766-11-0.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

At 25 °C pyridine has a viscosity of 0.88 mPa/s and thermal conductivity of 0.166 W·m−1·K−1. 31181-90-5, formula is C6H4BrNO, Name is 5-Bromopicolinaldehyde. The enthalpy of vaporization is 35.09 kJ·mol−1 at the boiling point and normal pressure.The enthalpy of fusion is 8.28 kJ·mol−1 at the melting point. Application In Synthesis of 31181-90-5.

Lu, Guo-Liang;Tong, Amy S. T.;Conole, Daniel;Sutherland, Hamish S.;Choi, Peter J.;Franzblau, Scott G.;Upton, Anna M.;Lotlikar, Manisha U.;Cooper, Christopher B.;Denny, William A.;Palmer, Brian D. research published 《 Synthesis and structure-activity relationships for tetrahydroisoquinoline-based inhibitors of Mycobacterium tuberculosis》, the research content is summarized as follows. A series of 5,8-disubstituted tetrahydroisoquinolines e.g., 2-((5-(4-chlorophenyl)pyridin-2-yl)methyl)-8-(4-methylpiperazin-1-yl)-1,2,3,4-tetrahydroisoquinoline were shown to be effective inhibitors of M. tb in culture and modest inhibitors of M. tb ATP synthase. There was a broad general trend of improved potency with higher lipophilicity. Large substituents (e.g., Bn) at the tetrahydroquinoline 5-position were well-tolerated, while N-methylpiperazine was the preferred 8-substituent. Structure-activity relationships for 7-linked side chains showed that the nature of the 7-linking group was important; -CO- and -COCH₂– linkers were less effective than -CH₂– or -CONH- ones. This suggests that the positioning of a terminal aromatic ring is important for target binding. Selected compounds showed much faster rates of microsomal clearance than the clin. ATP synthase inhibitor bedaquiline, and modest inhibition of mycobacterial ATP synthase.

31181-90-5, 5-Bromopyridine-2-carbaldehyde is a useful research compound. Its molecular formula is C6H4BrNO and its molecular weight is 186.01 g/mol. The purity is usually 95%.

5-Bromopyridine-2-carbaldehyde is a water soluble organic molecule that has been shown to inhibit the mitochondrial respiratory chain. It is a structural analog of the natural substrate for mitochondrial cytochrome c oxidase, 5-aminolevulinic acid. This compound has been shown to be selective against cancer cells and has anti-viral properties. The photophysical properties of 5-bromopyridine-2-carbaldehyde have been studied extensively. The fluorescence quantum yield of this molecule in aqueous solution is 0.06%., Application In Synthesis of 31181-90-5

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Application In Synthesis of 766-11-0.

Lopez-Iglesias, Maria;Gonzalez-Martinez, Daniel;Rodriguez-Mata, Maria;Gotor, Vicente;Busto, Eduardo;Kroutil, Wolfgang;Gotor-Fernandez, Vicente research published 《 Asymmetric Biocatalytic Synthesis of Fluorinated Pyridines through Transesterification or Transamination: Computational Insights into the Reactivity of Transaminases》, the research content is summarized as follows. The synthesis of a family of pyridines bearing a fluorinated substituent on the aromatic ring has been carried out through two independent and highly stereoselective chemoenzymic strategies. Short chem. synthetic routes toward fluorinated racemic amines and prochiral ketones have been developed, which served as substrates to explore the suitability of lipases and transaminases in asym. biotransformations. The lipase-catalyzed kinetic resolution via acylation of racemic amines proceeded smoothly giving conversions close to 50% and excellent enantioselectivities. Alternatively, the biotransamination of the corresponding prochiral ketones was investigated giving access to both optically pure amine enantiomers using transaminases with complementary selectivity. High to quant. conversion values were achieved, which allowed the isolation of the amines in moderate to high yields (40-88%). A deeper understanding of the latter process was enabled by performing theor. calculations on thermodn. and mechanistic aspects. Calculations showed that the biotransamination reactions are highly favored by the presence of fluorine atoms and the pyridine ring.

766-11-0, 5-Bromo-2-fluoropyridine is a useful research compound. Its molecular formula is C5H3BrFN and its molecular weight is 175.99 g/mol. The purity is usually 95%.
5-Bromo-2-fluoropyridine is a boronic acid that has been shown to react with iodides and form 5-bromo-2-fluoroiodobenzene. The reaction of 5-bromo-2-fluoropyridine with benzene gives the same product as the reaction with 1,3,5-trioxane. The UV absorption of 5-bromo-2-fluoropyridine is found at 230 nm and 260 nm. It also has an absorption band in the infrared region at 1625 cm−1. Vibrational progressions have been observed for this molecule, which are due to dipole moments and electron density distributions in the molecule.
5-bromo-2-fluoropyridine is used in the synthesis of heteroaromatic and aniline derivatives of piperidines as potent ligands used for vesicular acetylcholine transport. , Application In Synthesis of 766-11-0

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine has a conjugated system of six π electrons that are delocalized over the ring. 16133-25-8, formula is C5H4ClNO2S, Name is Pyridine-3-sulfonyl chloride. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Synthetic Route of 16133-25-8.

Liu, Zhi-Lin;Ye, Zhi-Peng;Chen, Yi-Xuan;Zheng, Yu;Xie, Zhen-Zhen;Guan, Jian-Ping;Xiao, Jun-An;Chen, Kai;Xiang, Hao-Yue;Yang, Hua research published 《 Visible-Light-Induced, Palladium-Catalyzed 1,4-Difunctionalization of 1,3-Dienes with Bromodifluoroacetamides》, the research content is summarized as follows. A highly modular 1,4-difunctionalization of 1,3-dienes with bromodifluoroacetamides and sulfinates/amines through a photoinduced palladium-catalyzed radical relay process is described herein. This developed protocol offers a facile and general route to access a variety of value-added CF₂-incorporated alkenes in moderate to good yields. The versatility and flexibility of this approach have been well illustrated by readily accessible starting materials, synthetic convenience, and wide functional group compatibility.

Synthetic Route of 16133-25-8, Pyridine-3-sulfonyl chloride is a useful research compound. Its molecular formula is C5H4ClNO2S and its molecular weight is 177.61 g/mol. The purity is usually 95%.
Pyridine-3-sulfonyl chloride is a reagent used in the synthesis of pyrimidine derivatives with anti-proliferative activity against negative breast cancer cells.
Pyridine-3-sulfonyl chloride is a chemical compound that binds to the active site of cytochrome P450 enzymes. It can be used to study the effects of matrix effect on reaction solution. Pyridine-3-sulfonyl chloride has been shown to have an UV absorption spectrum with a maximum at 280 nm and a p450 activity that is proportional to the concentration of human serum. This compound has been shown to inhibit kinase domain in vitro assays, which may have clinical relevance in the treatment of obesity., 16133-25-8.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem