Category: pyridine-derivatives

Recommanded Product: 91-02-1. In 2019.0 DYES PIGMENTS published article about AGGREGATION-INDUCED EMISSION; POLYMERIC NANOPARTICLES; ORGANIC NANOPARTICLES; LIQUID-CHROMATOGRAPHY; HYDROGEN-SULFIDE; CLICK REACTION; HUMAN PLASMA; AIE; HOMOCYSTEINE; THIOLS in [Sheng, Huace; Hu, Yonghong; Zhao, Xinxin; Yang, Wenge] Nanjing Tech Univ, Sch Pharmaceut Sci, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China; [Hu, Yonghong; Fan, Shimin] Nanjing Tech Univ, Synerget Innovat Ctr Adv Mat, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China; [Zhou, Yi] Nanjing Tech Univ, Coll Chem & Mol Engn, Nanjing 211816, Jiangsu, Peoples R China; [Cao, Yang] Jiangsu Prov Hosp, Nanjing 210000, Jiangsu, Peoples R China in 2019.0, Cited 58.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1.

A new imidazo [1,5-alpha]pyridine-based fluorescent probe, named MZC-AC, is developed for the detection of cysteine (Cys) based on an excited state intramolecular proton transfer (ESIPT) mechanism. The probe MZC-AC uses an acrylate moiety as the ESIPT blocking group as well as the recognition site. Upon the treatment with Cys, MZC-AC exhibits a dramatic fluorescence enhancement (85-fold) and a large Stokes shift (166 nm). The limit of detection obtained from fluorescent titration was as low as 0.07 mu M. MZC-AC displays highly sensitive and selective response to Cys over homocysteine (Hcy) and glutathione (GSH). Significantly, MZC-AC could be used to detect Cys in living cells.

Recommanded Product: 91-02-1. Bye, fridends, I hope you can learn more about C12H9NO, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Category: pyridine-derivatives. In 2021 CHEM SCI published article about C-H BONDS; CROSS-COUPLING REACTIONS; GRIGNARD-REAGENTS; ENANTIOSELECTIVE FUNCTIONALIZATION; ALKYLIDENE DIHYDROPYRIDINES; REGIOSELECTIVE ADDITION; ARYL HALIDES; ALPHA; PYRIDINES; AZAARENES in [Wasfy, Nour; Rasheed, Faizan; Hunter, Isabelle; Shi, Jiaqi; Doan, Brian; Orellana, Arturo] York Univ, Dept Chem, 4700 Keele St, N York, ON M3J 1P3, Canada; [Robidas, Raphael; Legault, Claude Y.] Univ Sherbrooke, Dept Chem, Ctr Green Chem & Catalysis, 2500 Blvd Univ, Sherbrooke, PQ J1K 2R1, Canada; [Fishlock, Dan] F Hoffmann La Roche Ltd, Proc Chem & Catalysis, Synthet Mol Tech Dev, CH-4070 Basel, Switzerland in 2021, Cited 69. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6.

We report a mild palladium-catalyzed method for the selective allylation of 4-alkylpyridines in which highly basic pyridylic anions behave as soft nucleophiles. This method exploits alkylidene dihydropyridines, which are semi-stable intermediates readily formed using a ‘soft-enolization’ approach, in a new mechanistic manifold for decarboxylative allylation. Notably, the catalytic generation of pyridylic anions results in a substantially broader functional group tolerance compared to other pyridine allylation methods. Experimental and theoretical mechanistic studies strongly suggest that pyridylic anions are indeed the active nucleophiles in these reactions, and that they participate in an outer-sphere reductive elimination step. This finding establishes a new pK(a) boundary of 35 for soft nucleophiles in transition metal-catalyzed allylations.

Bye, fridends, I hope you can learn more about C8H9NO2, If you have any questions, you can browse other blog as well. See you lster.. Category: pyridine-derivatives

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Computed Properties of C6H5NO. Kalashnik, IN; Dyachenko, VD in [Kalashnik, I. N.; Dyachenko, V. D.] T Shevchenko Lugansk Natl Univ, UA-91011 Lugansk, Ukraine published New Multicomponent Synthesis of Functionalized Nitriles and Esters of 6-Alkylsulfanyl-1,4-dihydronicotinic Acids in 2020.0, Cited 19.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

The multicomponent condensation of malononitrile, hydrogen sulfide, aryl or hetaryl aldehydes, 1,3-dicarbonyl compounds and alkylating reagents afforded functionalized nitriles and esters of 6-alkylsulfanyl-1,4-dihydronicotinic acids, their aromatic analogues and 1,4-dihydrothieno[2,3-b]pyridines.

Welcome to talk about 500-22-1, If you have any questions, you can contact Kalashnik, IN; Dyachenko, VD or send Email.. Computed Properties of C6H5NO

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

In 2020.0 J AM CHEM SOC published article about CROSS-COUPLING REACTIONS; ENANTIOSELECTIVE 1,2-DIFUNCTIONALIZATION; IODIDES; TRIFLUOROMETHYLATION; FUNCTIONALIZATION; 1,2-ADDITION; ALKYNYLATION; STRATEGY; DIENES; LIGAND in [Dong, Xiao-Yang] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Peoples R China; [Dong, Xiao-Yang; Cheng, Jiang-Tao; Zhang, Yu-Feng; Zhan, Tian-Ya; Chen, Ji-Jun; Wang, Fu-Li; Yang, Ning-Yuan; Liu, Xin-Yuan] Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China; [Dong, Xiao-Yang; Cheng, Jiang-Tao; Zhang, Yu-Feng; Zhan, Tian-Ya; Chen, Ji-Jun; Wang, Fu-Li; Yang, Ning-Yuan; Liu, Xin-Yuan] Southern Univ Sci & Technol, Dept Chem, Guangdong Prov Key Lab Catalysis, Shenzhen 518055, Peoples R China; [Li, Zhong-Liang; Ye, Liu; Gu, Qiang-Shuai] Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China; [Li, Zhong-Liang; Ye, Liu; Gu, Qiang-Shuai] Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China in 2020.0, Cited 73.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1. Category: pyridine-derivatives

A copper-catalyzed intermolecular three-component asymmetric radical 1,2-carboalkynylation of alkenes has been developed, providing straightforward access to diverse chiral alkynes from readily available alkyl halides and terminal alkynes. The utilization of a cinchona alkaloid-derived multidentate N,N,P-ligand is crucial for the efficient radical generation from mildly oxidative precursors by copper and the effective inhibition of the undesired Glaser coupling side reaction. The substrate scope is broad, covering (hetero)aryl-, alkynyl-, and aminocarbonyl-substituted alkenes, (hetero)aryl and alkyl as well as silyl alkynes, and tertiary to primary alkyl radical precursors with excellent functional group compatibility. Facile transformations of the obtained chiral alkynes have also been demonstrated, highlighting the excellent complementarity of this protocol to direct 1,2-dicarbofunctionalization reactions with C(sp(2)/sp(3))-based reagents.

Welcome to talk about 500-22-1, If you have any questions, you can contact Dong, XY; Cheng, JT; Zhang, YF; Li, ZL; Zhan, TY; Chen, JJ; Wang, FL; Yang, NY; Ye, L; Gu, QS; Liu, XY or send Email.. Category: pyridine-derivatives

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

In 2020.0 BIOORG MED CHEM LETT published article about BIOLOGICAL EVALUATION; CYCLE ARREST; IN-VITRO; ANTIOXIDANT; DERIVATIVES; APOPTOSIS in [Gu, Xiaoke; Li, Xin; Guan, Mingyu; Jiang, Chunyu; Song, Qinghua; Sun, Nan; Qiu, Jingying] Xuzhou Med Univ, Jiangsu Key Lab New Drug Res & Clin Pharm, Xuzhou 221004, Jiangsu, Peoples R China; [Zou, Yueting; Zhou, Qingqing; Chen, Jing; Qiu, Jingying] Xuzhou Med Univ, Sch Pharm, Dept Pharmaceut Anal, Xuzhou 221004, Jiangsu, Peoples R China in 2020.0, Cited 27.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1. Formula: C12H9NO

P-glycoprotein (P-gp)-mediated multidrug resistance (MDR) is a major obstacle to successful chemotherapy for leukemia. In this study, a series of thiosemicarbazone-containing compounds (4a-b, 7a-q) were synthesized. Biological evaluation showed that the most active compound 7e displayed potent anti-leukemia activity against P-gp overexpressing drug-resistant K562/A02 cells, with an IC50 value of 0.44 mu M. Notably, compound 7e exhibited a selective killing effect on K562/A02 cells by dose-dependently increasing the intracellular levels of reactive oxygen species (ROS), thus exerting a potential collateral sensitivity (CS)-promoting effect in vitro. Moreover, compound 7e could inhibit HDAC1 and HDAC6, and induce the apoptosis of K562/A02 cells by increasing the expression of Bax, decreasing Bcl-2 protein level, and promoting the cleavage of caspase-3 and PARP, respectively. Overall, 7e may be a potential anti-cancer agent against drug-resistant myelogenous leukemia.

Formula: C12H9NO. Welcome to talk about 91-02-1, If you have any questions, you can contact Gu, XK; Li, X; Guan, MY; Jiang, CY; Song, QH; Sun, N; Zou, YT; Zhou, QQ; Chen, J; Qiu, JY or send Email.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

HPLC of Formula: C6H5NO. In 2019.0 TETRAHEDRON published article about HYPOPHOSPHITE COMBINATION SYSTEM; PHENYL SULFONE; NUCLEOPHILIC DIFLUOROMETHYLATION; CARBONYL-COMPOUNDS; SULFIDE OXIDATION; RANEY-NICKEL; REDUCTIVE DESULFURIZATION; STEREOSELECTIVE-SYNTHESIS; HIGH ENANTIOSELECTIVITY; REFORMATSKY REACTION in [Batisse, Chloe; Davila, Maria F. Cespedes; Messara, Amelia; Panossian, Armen; Hanquet, Gilles; Leroux, Frederic R.] Univ Strasbourg, Univ Haute Alsace, CNRS, ECPM,UMR LIMA 7042, 25 Rue Becquerel, F-67087 Strasbourg, France; [Castello, Marco] Univ Basilicata, Dipartimento Sci, Via Nazario Sauro 85, I-85100 Potenza, Italy; [Davila, Maria F. Cespedes; Vivet, Bertrand; Marciniak, Gilbert] Sanofi Aventis R&D, 16 Rue Ankara, F-67080 Strasbourg, France in 2019.0, Cited 143.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

The -CHF2 moiety has shown a growing interest in pharmaceutical and agrochemical applications over the last few years. Its introduction is therefore a current research topic for organic chemists. Several groups have reported the synthesis of difluoromethylated compounds. However, the more challenging enantioselective introduction of the difluoromethyl group has been scarcely described yet. We recently developed a new strategy, based on the use of an enantiopure difluoromethyl sulfoxide used as chiral and traceless auxiliary, for the synthesis of highly enantioenriched alpha-difluoromethyl alcohols. The first method developed in our laboratory aims to access highly stereoenriched alpha,alpha-difluoro-beta-hydroxysulfoxides through the condensation of the enantiopure difluoromethyl sulfoxide on carbonyl derivatives. It is noteworthy that highly diastereo- and enantioenriched alpha,alpha-difluoro-beta-hydroxysulfoxides can also be accessed after the diastereoselective reduction of highly enantioenriched alpha,alpha-difluoro-beta-ketosulfoxides. Finally, the expected difluoromethyl-substituted alcohols can be obtained after removal of the chiral auxiliary with complete retention of stereoenrichment at carbon. (C) 2019 Elsevier Ltd. All rights reserved.

HPLC of Formula: C6H5NO. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Batisse, C; Davila, MFC; Castello, M; Messara, A; Vivet, B; Marciniak, G; Panossian, A; Hanquet, G; Leroux, FR or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

I found the field of Pharmacology & Pharmacy very interesting. Saw the article Synthesis and Evaluation of Pyridoxal Hydrazone and Acylhydrazone Compounds as Potential Angiogenesis Inhibitors published in 2019.0. HPLC of Formula: C8H10ClNO3, Reprint Addresses Luo, WH (corresponding author), Shantou Univ, Coll Med, Bioanalyt Lab, Xinling Rd 22, Shantou, Guangdong, Peoples R China.. The CAS is 65-22-5. Through research, I have a further understanding and discovery of 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

Background/Aims: Hydrazone and acylhydrazone derivatives, which are produced from aldehyde reacting with hydrazine or acylhydrazine, have been reported to exhibit antitumor activities. However, the angionenic effects of this kind of derivatives haven’t been elucidated. Here, we synthesized 12 pyridoxal hydrazone and acylhydrazone compounds and investigated their antiangiogenic effects and the underlying mechanisms. Method: 3-(4,5-Dimethylthiazol-2-yl)-2, 5-dipheyltetrazolium bromide assay was used to screen the inhibitory effects of the synthesized compounds on endothelial cells (ECs) proliferation. The compound with best inhibitory effect was further evaluated with wound-healing assay and tube formation assay. Calcein-Am assay was carried out to determine the content of intracellular labile iron pool (LIP). Intracellular reduced glutathione (GSH) was determined by spectrophotometry. Flow cytometry was used to determine cell cycle and apoptosis. Results: Compound 10 (3-hydroxy-5-[hydroxymethyl]-2-methyl-pyridine-4-carbaldehyde-2-naphthalen-1-acetyl hydrazone) showed the best inhibitory effect on human umbilical vascular ECs proliferation, with IC50 value of 25.4 mu mol/L. It not only inhibited wound-healing and tube formation of ECs, but also decreased the content of intracellular LIP and GSH. Furthermore, it arrested ECs cycle at S phase and induced cell apoptosis. Conclusions: Compound 10 exhibits antiangiogenic effects by reducing the content of intracellular LIP and GSH, and subsequently arresting cell cycle and inducing cell apoptosis.

Welcome to talk about 65-22-5, If you have any questions, you can contact Chen, XY; Li, H; Luo, HJ; Lin, ZX; Luo, WH or send Email.. HPLC of Formula: C8H10ClNO3

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Formula: C6H5NO. Polo, E; Ibarra-Arellano, N; Prent-Penaloza, L; Morales-Bayuelo, A; Henao, J; Galdamez, A; Gutierrez, M in [Polo, Efrain; Ibarra-Arellano, Nicol; Prent-Penaloza, Luis; Gutierrez, Margarita] Univ Talca, Lab Sintesis Organ, Inst Quim Recursos Nat, Casilla 747, Talca 3460000, Chile; [Morales-Bayuelo, Alejandro] Univ Sinu, Ciencias Salud, Grp Invest Basicas & Clin Univ Sinu GIBACUS, Secc Cartagena, Cartagena, Colombia; [Henao, Jose] Univ Ind Santander, Grp Invest Quim Estruct GIQUE, Escuela Quim, Fac Ciencias, AA 678,Carrera 27,Calle 9 Ciudadela Univ, Bucaramanga, Colombia; [Galdamez, Antonio] Univ Chile, Dept Quim, Fac Ciencias, Santiago 7800003, Chile published Ultrasound-assisted synthesis of novel chalcone, heterochalcone and bis-chalcone derivatives and the evaluation of their antioxidant properties and as acetylcholinesterase inhibitors in 2019.0, Cited 90.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

The chalcone and bis-chalcone derivatives have been synthesized under sonication conditions via Claisen-Schmidt condensation with KOH in ethanol at room temperature (20-89%). The structures were established on the basis of NMR, IR, Single-crystal XRD, and MS. The best compound 3u had inhibitory activity (IC50 = 7.50 mu M). The synthesis, the antioxidative properties, chemical reactivity descriptors supported in Density Functional Theory (DFT), acetylcholinesterase (AChE) inhibition and their potential binding modes, and affinity were predicted by molecular docking of a number of morpholine-chalcones and quinoline-chalcone. A series of bis-chalcones are also reported. Molecular docking and an enzyme kinetic study on compound 3u suggested that it simultaneously binds to the catalytic active site (CAS) and peripheral anionic site (PAS) of AChE. Moreover, the pharmacokinetic profile of these compounds was investigated using a computational method.

Formula: C6H5NO. Bye, fridends, I hope you can learn more about C6H5NO, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Ramilo-Gomes, F; Addis, Y; Tekamo, I; Cavaco, I; Campos, DL; Pavan, FR; Gomes, CSB; Brito, V; Santos, AO; Domingues, F; Luis, A; Marques, MM; Pessoa, JC; Ferreira, S; Silvestre, S; Correia, I in [Ramilo-Gomes, Filipa; Addis, Yemataw; Tekamo, Israel; Cavaco, Isabel; Matilde Marques, M.; Pessoa, Joao Costa; Correia, Isabel] Univ Lisbon, Inst Super Tecn, Ctr Quim Estrutural, Av Rovisco Pais, P-1049001 Lisbon, Portugal; [Ramilo-Gomes, Filipa; Addis, Yemataw; Tekamo, Israel; Cavaco, Isabel; Matilde Marques, M.; Pessoa, Joao Costa; Correia, Isabel] Univ Lisbon, Inst Super Tecn, Dept Engn Quim, Av Rovisco Pais, P-1049001 Lisbon, Portugal; [Ramilo-Gomes, Filipa] Univ Lisbon, Inst Invest Medicamento IMed ULisboa, Fac Farm, Av Prof Gama Pinto, P-1649003 Lisbon, Portugal; [Addis, Yemataw; Tekamo, Israel; Cavaco, Isabel] Univ Algarve, Dept Quim & Farm, Campus Gambelas, P-8005139 Faro, Portugal; [Campos, Debora L.; Pavan, Fernando R.] UNESP, Fac Ciencias Farmaceut, CP 582, BR-14801902 Araraquara, SP, Brazil; [Gomes, Clara S. B.] Univ NOVA Lisboa, Dept Quim, LAQV REQUIMTE Lab Associado Quim Verde, Fac Ciencias & Tecnol, P-2829516 Monte De Caparica, Portugal; [Gomes, Clara S. B.] Univ NOVA Lisboa, Appl Mol Biosci Unit UCIBIO, Fac Ciencias & Tecnol, P-2829516 Monte De Caparica, Portugal; [Brito, Vanessa; Santos, Adriana O.; Domingues, Fernanda; Luis, Angelo; Ferreira, Susana; Silvestre, Samuel] Univ Beira Interior, CICS UBI Hlth Sci Res Ctr, Av Infante D Henrique, P-6200506 Covilha, Portugal published Antimicrobial and antitumor activity of S-methyl dithiocarbazate Schiff base zinc(II) complexes in 2021.0, Cited 80.0. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5.

Schiff bases (SB) obtained from S-methyl dithiocarbazate and aromatic aldehydes: salicylaldehyde (H2L1), ovanillin (H2L2), pyridoxal (H2L3) and 2,6-diformyl-4-methylphenol (H3L4), and their corresponding Zn(II)complexes (1-4), are synthesized. All compounds are characterized by elemental analyses, infrared, UV-Vis, nuclear magnetic resonance spectroscopy and mass spectrometry. The structures of H2L2 and [Zn-2(L-1)(2)(H2O) (DMF)] (1a) (DMF = dimethylformamide) are solved by single crystal X-ray diffraction. The SB coordinates the metal center through the Ophenolate, Nimine and Sthiolate atoms. The radical scavenging activity is tested using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, with all ligand precursors showing IC50 values similar to 40 mu M. Cytotoxicity studies with several tumor cell lines (PC-3, MCF-7 and Caco-2) as well as a non-tumoral cell line (NHDF) are reported. Interestingly, 1 has relevant and selective antiproliferative effect against Caco-2 cells (IC50 = 9.1 mu M). Their antimicrobial activity is evaluated in five bacterial strains (Klebsiella pneumoniae, Acinetobacter baumannii, Listeria monocytogenes, Pseudomonas aeruginosa and Staphylococcus aureus) and two yeast strains (Candida albicans and Candida tropicalis) with some compounds showing bacteriostatic and fungicidal activity. The minimal inhibitory concentration (MIC90) of HnL against Mycobacterium tuberculosis is also reported, with H2L2 and H3L4 showing very high activity (MIC90 < 0.6 mu g/mL). The ability of the compounds to bind bovine serum albumin (BSA) and DNA is evaluated for H3L4 and [Zn-2(L-4)(CH3COO)] (4), both showing high binding constants to BSA (ca. 106 M 1) and ability to bind DNA. Overall, the reported compounds show relevant antitumor and antimicrobial properties, our data indicating they may be promising compounds in several fields of medicinal chemistry. Bye, fridends, I hope you can learn more about C8H10ClNO3, If you have any questions, you can browse other blog as well. See you lster.. Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

An article Reaction of Pyridine-N-Oxides with Tertiary sp(2)-N-Nucleophiles: An Efficient Synthesis of Precursors for N-(Pyrid-2-yl)-Substituted N-Heterocyclic Carbenes WOS:000585614500001 published article about ONE-STEP CONVERSION; METAL-COMPLEXES; MILD; CATALYSIS; GOLD(I); SALTS; HETEROATOM; IMIDAZOLO; LIGANDS; ROUTE in [Bugaenko, Dmitry, I; Yurovskaya, Marina A.; Karchava, Alexander, V] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119992, Russia in 2020, Cited 61. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6. COA of Formula: C8H9NO2

N-(Pyrid-2-yl)-substituted azolium and pyridinium salts, precursors for hybrid NHC-containing ligands, were obtained with excellent regioselectivity, employing a deoxygenative CH-functionalization of pyridine-N-oxides with substituted imidazoles, thiazoles, and pyridine. Unlike the traditional SNAr-based methods, this approach provides high yields for substrates bearing substituents of different electronic nature. The utility of azolium and pyridinium salts thus prepared was also highlighted by the synthesis of pyridyl-substituted imidazolyl-2-thione, benzodiazepine as well as 2-aminopyridines.

About Ethyl nicotinate, If you have any questions, you can contact Bugaenko, DI; Yurovskaya, MA; Karchava, AV or concate me.. COA of Formula: C8H9NO2

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem