Category: 766-11-0

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.. COA of Formula: C5H3BrFN.

Ruzi, Rehanguli;Liu, Kai;Zhu, Chengjian;Xie, Jin research published 《 Upgrading ketone synthesis direct from carboxylic acids and organohalides》, the research content is summarized as follows. A photoredox, nickel and phosphoranyl radical synergistic cross-electrophile coupling of com. available chems., aromatic acids RCO₂H (R = 4-methylphenyl, thiophen-3-yl, naphthalen-2-yl, etc.) and aryl/alkyl bromides R¹Br (R¹ = 6-(trifluoromethyl)pyridin-3-yl, 2-cyanoethyl, quinolin-3-yl, etc.) was reported. This allows for concise synthesis of highly functionalized ketones RC(O)R¹directly, without the preparation of activated carbonyl intermediates or organometallic compounds, and thus complements the conventional Weinreb ketone synthesis. Use of the appropriate photocatalyst, ligand amount and solvents can match the reaction rate required by any simple catalytic cycle. The practicality and synthetic robustness of the reaction are illustrated by the facile synthesis of complex ketones from readily available feedstock chems.

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. , COA of Formula: C5H3BrFN

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. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. 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. Product Details of C5H3BrFN.

Ryan, Sarah J.;Schimler, Sydonie D.;Bland, Douglas C.;Sanford, Melanie S. research published 《 Acyl Azolium Fluorides for Room Temperature Nucleophilic Aromatic Fluorination of Chloro- and Nitroarenes》, the research content is summarized as follows. The reaction of acid fluorides with N-heterocyclic carbenes (NHCs) produces anhydrous acyl azolium fluorides. With appropriate selection of the acid fluoride and NHC, these salts can be used for the room temperature S_NAr fluorination of a variety of aryl chlorides and nitroarenes. E.g., in presence of N-heterocyclic carbene (I) and 4-MeOC₆H₄COF, fluorination of aryl chloride (II) gave 99% aryl fluoride (III).

Product Details of C5H3BrFN, 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

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.. Product Details of C5H3BrFN.

Narjes, Frank;Llinas, Antonio;von Berg, Stefan;Jirholt, Johan;Lever, Sarah;Pehrson, Rikard;Collins, Mia;Malmberg, Anna;Svanberg, Petter;Xue, Yafeng;Olsson, Roine I.;Malmberg, Jesper;Hughes, Glyn;Hossain, Nafizal;Grindebacke, Hanna;Leffler, Agnes;Krutroek, Nina;Baeck, Elisabeth;Ramnegaard, Marie;Lepistoe, Matti;Thunberg, Linda;Aagaard, Anna;McPheat, Jane;Hansson, Eva L.;Chen, Rongfeng;Xiong, Yao;Hansson, Thomas G. research published 《 AZD0284, a Potent, Selective, and Orally Bioavailable Inverse Agonist of Retinoic Acid Receptor-Related Orphan Receptor C2》, the research content is summarized as follows. Inverse agonists of the nuclear receptor RORC2 have been widely pursued as a potential treatment for a variety of autoimmune diseases. Author have discovered a novel series of isoindoline-based inverse agonists of the nuclear receptor RORC2, derived from recently disclosed RORC2 inverse agonist 2. Extensive structure-activity relationship (SAR) studies resulted in AZD0284 (20), which combined potent inhibition of IL-17A secretion from primary human TH17 cells with excellent metabolic stability and good PK in preclin. species. In two preclin. in vivo studies, compound 20 reduced thymocyte numbers in mice and showed dose-dependent reduction of IL-17A containing γδ-T cells and of IL-17A and IL-22 RNA in the imiquimod induced inflammation model. Based on these data and a favorable safety profile, 20 was progressed to phase 1 clin. studies.

Product Details of C5H3BrFN, 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 has a conjugated system of six π electrons that are delocalized over the ring. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Computed Properties of 766-11-0.

Neumann, Theresa;Benajiba, Lina;Goering, Stefan;Stegmaier, Kimberly;Schmidt, Boris research published 《 Evaluation of Improved Glycogen Synthase Kinase-3α Inhibitors in Models of Acute Myeloid Leukemia》, the research content is summarized as follows. The challenge for glycogen synthase kinase-3 (GSK-3) inhibitor design lies in achieving high selectivity for one isoform over the other. The therapy of certain diseases, such as acute myeloid leukemia (AML), may require α-isoform specific targeting. The scorpion shaped GSK-3 inhibitors developed by the group achieved the highest GSK-3α selectivity reported so far but suffered from insufficient aqueous solubility This work presents the solubility-driven optimization of the isoform-selective inhibitors using a scorpion shaped lead. Among 15 novel compounds, compound I showed high activity against GSK-3α/β with the highest GSK-3α selectivity reported to date. Compound I was profiled for bioavailability and toxicity in a zebrafish embryo phenotype assay. Selective GSK-3α targeting in AML cell lines was achieved with compound I, resulting in a strong differentiation phenotype and colony formation impairment, confirming the potential of GSK-3α inhibition in AML therapy.

Computed Properties 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 has a conjugated system of six π electrons that are delocalized over the ring. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. COA of Formula: C5H3BrFN.

Ozenil, Marius;Pacher, Katharina;Balber, Theresa;Vraka, Chrysoula;Roller, Alexander;Holzer, Wolfgang;Spreitzer, Helmut;Mitterhauser, Markus;Wadsak, Wolfgang;Hacker, Marcus;Pichler, Verena research published 《 Enhanced arecoline derivatives as muscarinic acetylcholine receptor M1 ligands for potential application as PET radiotracers》, the research content is summarized as follows. Supported by their involvement in many neurodegenerative disorders, muscarinic acetylcholine receptors (mAChRs) are an interesting target for PET imaging. Nevertheless, no radiotracer is established in clin. routine. Within this work we aim to develop novel PET tracers based on the structure of arecoline. Fifteen novel arecoline derivatives were synthesized, characterized and tested for their affinity to the mAChRs M1-M5 and the conceivable off-target acetylcholinesterase. Five arecoline derivatives and arecoline were labeled with carbon-11 in good yields. Arecaidine diphenylmethyl ester (3b), arecaidine bis(4-fluorophenyl)methyl ester (3c) and arecaidine (4-bromophenyl)(4-fluorophenyl)methyl ester showed a tremendous gain in mAChR affinity compared to arecoline and a pronounced subtype selectivity for M1. Metabolic stability and serum protein binding of [¹¹C]3b and [¹¹C]3c were in line with properties of established brain tracers. Nonspecific binding of [¹¹C]3c was prevalent in kinetic and endpoint experiment on living cells as well as in autoradiog. on native mouse brain sections, which motivates us to decrease the lipophilicity of this substance class prior to in vivo experiments

COA of Formula: C5H3BrFN, 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

In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. For this reason, pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·mol−1 in pyridine vs. 150 kJ·mol−1 in benzene). Application of C5H3BrFN.

Palmer, Brian D.;Sutherland, Hamish S.;Blaser, Adrian;Kmentova, Iveta;Franzblau, Scott G.;Wan, Baojie;Wang, Yuehong;Ma, Zhenkun;Denny, William A.;Thompson, Andrew M. research published 《 Synthesis and Structure-Activity Relationships for Extended Side Chain Analogues of the Antitubercular Drug (6S)-2-Nitro-6-{[4-(trifluoromethoxy)benzyl]oxy}-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine (PA-824)》, the research content is summarized as follows. Novel extended side chain nitroimidazooxazine analogs featuring diverse linker groups between two aryl rings, e.g., I, were studied as a potential strategy to improve solubility and oral activity against chronic infection by Mycobacterium tuberculosis. Both lipophilic and highly polar functionalities (e.g., carboxamide, alkylamine, piperazine, piperidine, but not sulfonamide) were well tolerated in vitro, and the hydrophilic linkers provided some solubility improvements, particularly in combination with pyridine rings. Most of the 18 compounds further assessed showed high microsomal stabilities, although in the acute infection mouse model, just one stilbene (6-fold) and two pyridine-containing acetylene derivatives (5-fold and >933-fold) gave in vivo efficacies notably superior to the clin. stage compound pretomanid (PA-824). The most efficacious analog, I, also displayed outstanding in vivo activity in the stringent chronic model (up to 24-fold better than the drug delamanid and 4-fold greater than our previous best phenylpyridine candidate), with favorable pharmacokinetics, including good oral bioavailability in the rat.

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 of C5H3BrFN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. TThe standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Category: pyridine-derivatives.

Perry, Ian B.;Brewer, Thomas F.;Sarver, Patrick J.;Schultz, Danielle M.;DiRocco, Daniel A.;MacMillan, David W. C. research published 《 Direct arylation of strong aliphatic C-H bonds》, the research content is summarized as follows. In the presence of tetrabutylammonium decatungstate (TBADT) as a photocatalyst for hydrogen atom transfer and (4,4′-di-tert-butyl-2,2′-bipyridine)NiBr₂ as a coupling catalyst, unfunctionalized hydrocarbons, carbocycles, and heterocycles were arylated with aryl bromides; in most cases, the method was selective for a single product or a mixture of two products. A variety of aryl bromides were effective arylating agents under the reaction conditions; cycloalkanes, cycloalkanones, heterocycles, methylarenes, and alkanes reacted under the conditions. Terpene natural products such as eucalyptol, fenchone, and sclareolide were arylated selectively, and the method was used to prepare racemic N-Boc epibatidine and two analogs in two steps from com. available materials.

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. , Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is colorless, but older or impure samples can appear yellow. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. Category: pyridine-derivatives.

Mills, L. Reginald;Monteith, John J.;dos Passos Gomes, Gabriel;Aspuru-Guzik, Alan;Rousseaux, Sophie A. L. research published 《 The Cyclopropane Ring as a Reporter of Radical Leaving-Group Reactivity for Ni-Catalyzed C(sp³)-O Arylation》, the research content is summarized as follows. The ability to understand and predict reactivity is essential for the development of new reactions. In the context of Ni-catalyzed C(sp³)-O functionalization, we have developed a unique strategy employing activated cyclopropanols to aid the design and optimization of a redox-active leaving group for C(sp³)-O arylation. In this chem., the cyclopropane ring acts as a reporter of leaving-group reactivity, since the ring-opened product is obtained under polar (2e) conditions, and the ring-closed product is obtained under radical (1e) conditions. Mechanistic studies demonstrate that the optimal leaving group is redox-active and are consistent with a Ni(I)/Ni(III) catalytic cycle. The optimized reaction conditions are also used to synthesize a number of arylcyclopropanes, which are valuable pharmaceutical motifs.

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. , Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. TThe standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Synthetic Route of 766-11-0.

Mills, L. Reginald;Patel, Purvish;Rousseaux, Sophie A. L. research published 《 Decyanation-(hetero)arylation of malononitriles to access α-(hetero)arylnitriles》, the research content is summarized as follows. Quaternary α-(hetero)arylnitriles are desirable biol. relevant products, however the existing methods for their synthesis can be unselective or require the use of undesirable reagents, such as cyanide salts. Herein authors report a one-pot method for transnitrilation-mediated decyanation-metalation of disubstituted malononitriles, followed by treatment with (hetero)aryl electrophiles to access quaternary α-(hetero)arylnitrile products. A number of products were prepared using this method (34 examples, 27-99% yield). This method highlights the usefulness of malononitriles as precursors for alkylnitrile-containing compounds

Synthetic Route 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. 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. Category: pyridine-derivatives.

Morales-Colon, Maria T.;See, Yi Yang;Lee, So Jeong;Scott, Peter J. H.;Bland, Douglas C.;Sanford, Melanie S. research published 《 Tetramethylammonium Fluoride Alcohol Adducts for S_NAr Fluorination》, the research content is summarized as follows. Nucleophilic aromatic fluorination (S_NAr) is among the most common methods for the formation of C(sp²)-F bonds. Despite many recent advances, a long-standing limitation of these transformations was the requirement for rigorously dry, aprotic conditions to maintain the nucleophilicity of fluoride and suppress the generation of side products. This report addresses this challenge by leveraging tetramethylammonium fluoride alc. adducts (Me₄NF·ROH) as fluoride sources for S_NAr fluorination. Through systematic tuning of the alc. substituent (R), tetramethylammonium fluoride tert-amyl alc. (Me₄NF·t-AmylOH) was identified as an inexpensive, practical, and bench-stable reagent for S_NAr fluorination under mild and convenient conditions (80°C in DMSO, without the requirement for drying of reagents or solvent). A substrate scope of more than 50 (hetero) aryl halides and nitroarene electrophiles was demonstrated.

Category: pyridine-derivatives, 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