Extended knowledge of 91-02-1

Computed Properties of C12H9NO. About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Weng, WZ; Guo, JS; Liu, KX; Shao, TQ; Song, LQ; Zhu, YP; Sun, YY; Meng, QG or concate me.

Authors Weng, WZ; Guo, JS; Liu, KX; Shao, TQ; Song, LQ; Zhu, YP; Sun, YY; Meng, QG in CANADIAN SCIENCE PUBLISHING published article about C-H FUNCTIONALIZATION; CATALYZED OXIDATION; SELECTIVE OXIDATION; BIOLOGICAL-ACTIVITY; AEROBIC OXIDATION; IN-VITRO; COPPER; IODINE; BONDS; BENZYLPYRIDINES in [Weng, Wei-Zhao; Guo, Jiang-Shan; Liu, Kai-Xuan; Shao, Tian-Qi; Song, Li-Qun; Zhu, Yan-Ping; Sun, Yuan-Yuan; Meng, Qing-Guo] Yantai Univ, Collaborat Innovat Ctr Adv Drug Delivery Syst & B, Minist Educ, Sch Pharm,Key Lab Mol Pharmacol & Drug Evaluat, Yantai 264005, Shandong, Peoples R China in 2020.0, Cited 67.0. Computed Properties of C12H9NO. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1

A facile protocol for the synthesis of quinoline formaldehydes via direct oxidative C-H bonds functionalization of methyl-azaheteroarenes in the presence of I-2-DMSO has been described. This method is metal-free and easy to operate. This reaction provided a convenient route for the preparation of a range of important quinoline formaldehydes.

Computed Properties of C12H9NO. About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Weng, WZ; Guo, JS; Liu, KX; Shao, TQ; Song, LQ; Zhu, YP; Sun, YY; Meng, QG or concate me.

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

Why Are Children Getting Addicted To 91-02-1

Welcome to talk about 91-02-1, If you have any questions, you can contact Zhang, ZY; Yadagiri, D; Gevorgyan, V or send Email.. COA of Formula: C12H9NO

COA of Formula: C12H9NO. I found the field of Chemistry very interesting. Saw the article Light-induced metal-free transformations of unactivated pyridotriazoles published in 2019, Reprint Addresses Gevorgyan, V (corresponding author), Univ Illinois, Dept Chem, 845 W Taylor St, Chicago, IL 60607 USA.; Gevorgyan, V (corresponding author), Univ Texas Dallas, Dept Chem & Biochem, 800 W Campbell RD, Richardson, TX 75080 USA.. The CAS is 91-02-1. Through research, I have a further understanding and discovery of Phenyl(pyridin-2-yl)methanone.

A highly efficient and practical method for incorporation of the arylmethylpyridyl moiety into diverse molecules has been developed. This method features the transition metal-free light-induced room temperature transformation of pyridotriazoles into pyridyl carbenes, which are capable of smooth arylation, X-H insertion, and cyclopropanation reactions. The synthetic usefulness of the developed method was illustrated in a facile synthesis of biologically active molecules.

Welcome to talk about 91-02-1, If you have any questions, you can contact Zhang, ZY; Yadagiri, D; Gevorgyan, V or send Email.. COA of Formula: C12H9NO

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

Search for chemical structures by a sketch :614-18-6

Welcome to talk about 614-18-6, If you have any questions, you can contact Li, FZ; Geng, JS; Hu, KQ; Yu, JP; Liu, N; Chai, ZF; Mei, L; Shi, WQ or send Email.. HPLC of Formula: C8H9NO2

An article Proximity Effect in Uranyl Coordination of the Cucurbit[6]uril-Bipyridinium Pseudorotaxane Ligand for Promoting Host-Guest Synergistic Chelating WOS:000675430900047 published article about METAL-ORGANIC FRAMEWORK; POLYROTAXANES; INCLUSION; DESIGN in [Li, Fei-Ze; Liu, Ning] Sichuan Univ, Inst Nucl Sci & Technol, Minist Educ, Key Lab Radiat Phys & Technol, Chengdu 610064, Peoples R China; [Li, Fei-Ze; Geng, Jun-Shan; Hu, Kong-Qiu; Yu, Ji-Pan; Chai, Zhi-Fang; Mei, Lei; Shi, Wei-Qun] Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China; [Chai, Zhi-Fang] Chinese Acad Sci, Ningbo Inst Ind Technol, Engn Lab Adv Energy Mat, Ningbo 315201, Zhejiang, Peoples R China in 2021, Cited 43. HPLC of Formula: C8H9NO2. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6

behavior of cucurbituril-bipyridinium pseudorotaxane ligand by utilizing meta-functionalized bipyridinium dicarboxylate guest. A tailored pseudorotaxane precursor involving 1,1′-(hexane-1,6-diyl)bis(3-cyanopyridin-1-ium) bromide (C6BPCN3) and cucurbit[6]uril (CB[6]) has designed and synthesized. Through in situ hydrolysis of the pseudorotaxane ligands and their coordination assembly with uranyl cations, seven new uranyl-rotaxane coordination polymers URCP1-URCP7 have been obtained under hydrothermal conditions in the presence of different anions. It is demonstrated that the variation of carboxylate groups from para- to meta-position greatly affected the coordination behaviors of the metafunctionalized pseudorotaxane linkers, which are enriched from simple guest-only binding to host-guest simultaneous coordination and synergistic chelating. This effective regulation on uranyl coordination of supramolecular pseudorotaxane can be attributed to the proximity effect, which refers to the meta-position carboxyl group being spatially closer to the portal carbonyl group of CB[6]. Moreover, by combining other regulation methods such as introducing competing counterions and modulating solution acidity, the nuclearity of the uranyl center and the coordination patterns of the pseudorotaxane ligand can be diversely tuned, which subsequently exert great influence on the final dimensionality of resultant uranyl compounds. This work presents a large diversity of uranyl-based coordination polyrotaxane compounds with fascinating mechanically interlocked components and, most importantly, provides a feasible approach to adjust and control the metal coordination behavior of the pseudorotaxane ligand that might expand the scope of application of such supramolecular ligands.

Welcome to talk about 614-18-6, If you have any questions, you can contact Li, FZ; Geng, JS; Hu, KQ; Yu, JP; Liu, N; Chai, ZF; Mei, L; Shi, WQ or send Email.. HPLC of Formula: C8H9NO2

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

Machine Learning in Chemistry about 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

Welcome to talk about 65-22-5, If you have any questions, you can contact Asante, I; Pei, H; Zhou, E; Liu, SY; Chui, D; Yoo, E; Conti, DV; Louie, SG or send Email.. HPLC of Formula: C8H10ClNO3

Authors Asante, I; Pei, H; Zhou, E; Liu, SY; Chui, D; Yoo, E; Conti, DV; Louie, SG in ROYAL SOC CHEMISTRY published article about METHYLENETETRAHYDROFOLATE REDUCTASE POLYMORPHISM; COLON-CANCER; DNA METHYLATION; FOLATE STATUS; RISK; HOMOCYSTEINE; DIHYDROFOLATE; METABOLITES; ADENOMA; PLASMA in [Asante, Isaac; Pei, Hua; Zhou, Eugene; Liu, Siyu; Chui, Darryl; Yoo, EunJeong; Louie, Stan G.] Univ Southern Calif, Sch Pharm, Dept Clin Pharm, Los Angeles, CA 90089 USA; [Conti, David V.] Univ Southern Calif, Keck Sch Med, Dept Prevent Med, Los Angeles, CA USA in 2019.0, Cited 33.0. HPLC of Formula: C8H10ClNO3. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5

Introduction: colorectal cancer (CRC) continues to be difficult to diagnose due to the lack of reliable and predictive biomarkers. Objective: to identify blood-based biomarkers that can be used to distinguish CRC cases from controls. Methods: a workflow for untargeted followed by targeted metabolic profiling was conducted on the plasma samples of 26 CRC cases and ten healthy volunteers (controls) using liquid chromatography-mass spectrometry (LCMS). The data acquired in the untargeted scan was processed and analyzed using MarkerViewt software. The significantly different ions that distinguish CRC cases from the controls were identified using a mass-based human metabolome search. The result was further used to inform the targeted scan workflow. Results: the untargeted scan yielded putative biomarkers some of which were related to the folate-dependent one-carbon metabolism (FOCM). Analysis of the targeted scan found the plasma levels of nine FOCM metabolites to be significantly different between cases and controls. The classification models of the cases and controls, in both the targeted and untargeted approaches, each yielded a 97.2% success rate after cross-validation. Conclusion: we have identified plasma metabolites with screening potential to discriminate between CRC cases and controls.

Welcome to talk about 65-22-5, If you have any questions, you can contact Asante, I; Pei, H; Zhou, E; Liu, SY; Chui, D; Yoo, E; Conti, DV; Louie, SG or send Email.. HPLC of Formula: C8H10ClNO3

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

Interesting scientific research on Phenyl(pyridin-2-yl)methanone

Product Details of 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.

Product Details of 91-02-1. In 2019.0 J ORGANOMET CHEM published article about STRUCTURAL-CHARACTERIZATION; BIOLOGICAL-ACTIVITY; CRYSTAL-STRUCTURES; METAL-COMPLEXES; DNA-BINDING; LIGANDS; IMIDAZOLIUM; PYRIDINE; ANTIBACTERIAL; CYTOTOXICITY in [Choo, Kar Bee; Lee, Sui Mae; Lee, Wai Leng; Cheow, Yuen Lin] Monash Univ Malaysia, Sch Sci, Jalan Lagoon Selatan, Bandar Sunway 47500, Selangor, Malaysia in 2019.0, Cited 74.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1.

A series of bidendate pyridine-functionalized metal N-heterocyclic carbene (NHC) complexes with various wingtip substituents (R = methyl, phenyl and tert-butyl) had been prepared from silver oxide-mediated transmetalation method. The basic backbone of the NHC ligands were prepared in two step-wise reactions: reduction of the commercially available 2-benzoylpyridine, followed by halogenation to yield 2-(chloro(phenyl) methyl) pyridine. Subsequent reactions with different imidazoles gave the desired imidazolium salts (or NHC precursors) with different R groups at the N wingtip (R = Me, Ph, t-Bu). Transmetalation of the imidazolium salts into platinum NHC complexes were achieved by using Ag2O mediated method with Pt(cod)Cl-2 as the transmetalating agent. On the other hand, nickel NHC complexes were obtained via one pot synthesis method with nickel chloride as the transmetalating agent and reflux in the presence of a base. Following recrystallisation, the molecular structure of Pt NHC complex (+/-)-5a had been successfully elucidated via single crystal X ray diffraction (XRD) analysis. The six-membered ring of the platinum NHC complexes adopted a boat conformation with the phenyl ring arranged at the axial position. Meanwhile, two unexpected nickel complexes, i.e. a simple nickel coordination complex and a nickelate complex, were obtained and studied using XRD. These Pt NHC complexes and unexpected Ni complexes were evaluated for their in vitro antimicrobial and anticancer activities against a panel of pathogenic microorganisms and three selected human cancer cell lines, including breast (MCF7), colon (HCT116) and oral (H103) cancer cells. Generally, the Pt NHC complexes displayed enhanced antimicrobial activities upon coordination to metals, as compared to the corresponding imidazolium salts i.e. NHC precursors, with minimum inhibitory concentration (MIC) values in micromolar (mM) range. A couple of platinum NHC complexes synthesized exhibited antimicrobial activities with MIC as low as 2 mM, which are comparable to silver NHC complexes with renowned antimicrobial profiles. Similarly, upon coordination to the metals, the cytotoxic effects of the platinum NHC complexes increased significantly as compared to the imidazolium salts. Among all, platinum NHC complex (+/-)-5c displayed significant cytotoxicities towards the cancer cells with IC50 values that are two to three times lower than that of the anticancer drug cisplatin. In summary, evidences for influence of both wingtip substituents and metals on the biological activities of the complexes have been found. (C) 2019 Elsevier B.V. All rights reserved.

Product Details of 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

An overview of features, applications of compound:91-02-1

SDS of cas: 91-02-1. Welcome to talk about 91-02-1, If you have any questions, you can contact Hosseini-Sarvari, M; Dehghani, A or send Email.

An article Visible-light-driven photochemical activity of ternary Ag/AgBr/TiO(2)nanotubes for oxidation C(sp(3))-H and C(sp(2))-H bonds WOS:000579576200011 published article about AG-AT-AGCL; HIGHLY EFFICIENT; SELECTIVE OXIDATION; PHOTOCATALYTIC ACTIVITY; BENZYL ALCOHOL; AEROBIC OXIDATION; ESCHERICHIA-COLI; STYRENE; EPOXIDATION; DEGRADATION in [Hosseini-Sarvari, Mona; Dehghani, Abdulhamid] Shiraz Univ, Dept Chem, Shiraz 7194684795, Iran in 2020.0, Cited 79.0. SDS of cas: 91-02-1. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1

The Ag/AgBr/TiO2 ternary component nanotube as a heterogeneous photocatalyst was used for the solvent-free oxidation of the benzylic C(sp(3))-H bond to the corresponding carbonyl compound or the solvent-controlled selective oxidative cleavage of the CQC double bond of styrene to benzaldehyde under visible light at room temperature. A wide variety of carbonyl compounds were successfully synthesized through the developed photocatalytic process. Several advantages such as solvent-free conditions, sans additional oxidant, simple reaction, short reaction time, and easy separation of the product promote the reaction to be green. Moreover, the Ag/AgBr/TiO2 nanotubes could be used several times without reduction in their photocatalytic activity.

SDS of cas: 91-02-1. Welcome to talk about 91-02-1, If you have any questions, you can contact Hosseini-Sarvari, M; Dehghani, A or send Email.

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

Can You Really Do Chemisty Experiments About 91-02-1

Computed Properties of C12H9NO. About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Cinarli, M; Cinarli, E; Ataol, CY; Idil, O; Kariptas, E or concate me.

Authors Cinarli, M; Cinarli, E; Ataol, CY; Idil, O; Kariptas, E in ELSEVIER published article about CRYSTAL-STRUCTURE; SPECTROSCOPIC CHARACTERIZATION; INTERMOLECULAR INTERACTIONS; ANTIBACTERIAL ACTIVITY; COORDINATION BEHAVIOR; BIOLOGICAL-ACTIVITY; CHEMICAL ACTIVITY; DIAZO-COMPOUNDS; SCHIFF-BASES; X-RAY in [Cinarli, Murat] Ahi Evran Univ, Cent Res & Applicat Lab, TR-40100 Kirsehir, Turkey; [Cinarli, Esra] Ahi Evran Univ, Fac Sci, Dept Biol, TR-40100 Kirsehir, Turkey; [Ataol, Cigdem Yuksektepe] Cankiri Karatekin Univ, Fac Sci, Dept Phys, TR-18100 Cankiri, Turkey; [Idil, Onder] Amasya Univ, Fac Educ, Dept Basic Educ, TR-05000 Amasya, Turkey; [Kariptas, Ergin] Ahi Evran Univ, Fac Med, Dept Microbiol, TR-40100 Kirsehir, Turkey in 2019.0, Cited 65.0. Computed Properties of C12H9NO. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1

The NNO tridentate Schiff base ligand of 2-benzoyl pyridine sulfonyl hydrazone (HL) and its transition metal complexes [CoL2] (1), [NiL2] (2) and [ZnL2] (3) have been synthesized and characterized by analytical and spectroscopic studies. The molecular structures of HL and [NiL2] (2) have been investigated by X-ray diffraction and DET/B3LYP methods. Based on the optimized structures, a single point energy calculation was made for HL and (2) in the different solvent media. The stability of the molecular structures was investigated in different solvent environments by calculating the molecular orbital energies and total energies of the molecular structures. The global reactivity parameters were obtained and the interactions between the molecules with DNA bases such as adenine, cytosine, guanine, and thymine were investigated by using the ECT (electrophilicity-based charge transfer) method and Delta N (charge transfer). Hirshfeld surfaces of HL and (2) complex were investigated and the interaction energies between the molecules participating in C-H center dot center dot center dot O/pi interactions in the molecular structures were calculated by using the CE-HF energy model. From elemental analysis data, the metal-ligand ratio of the complexes was found to be 1:2. All compounds were examined for their antimicrobial activity against pathogenic microorganisms by the well-diffusion method. DNA cleavage studies of compounds were screened by the agarose gel electrophoresis method. The results showed that complex (3) showed highly nicking activity, while HL, (1) and (2) complexes didn’t show any nicking activity. (C) 2019 Elsevier B.V. All rights reserved.

Computed Properties of C12H9NO. About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Cinarli, M; Cinarli, E; Ataol, CY; Idil, O; Kariptas, E or concate me.

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

Discovery of 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Welcome to talk about 65-22-5, If you have any questions, you can contact Pati, C; Ghosh, K or send Email.

An article A 1,8-naphthalimide-pyridoxal conjugate as a supramolecular gelator for colorimetric read out of F- ions in solution, gel and solid states WOS:000459942300031 published article about FLUORIDE-ION; ANION; FLUORESCENCE; AGGREGATION; METALLOGELS; DYE; CHEMOSENSORS; RECOGNITION; VITAMIN-B-6; DERIVATIVES in [Pati, Chiranjit; Ghosh, Kumaresh] Univ Kalyani, Dept Chem, Kalyani 741235, W Bengal, India in 2019.0, Cited 53.0. Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5

A naphthalimide-pyridoxal conjugate 1 has been designed and synthesized. Compound 1 forms a stable greenish yellow colored gel in DMSO:H2O (8:1 v/v). Rheological study reveals that the gel is mechanically strong (G> G) over a wide range of applied strains. The morphology of the gel as determined by FESEM shows a highly cross-linked fibrous network. The gel is anion-responsive and is selectively transformed into a sol with a color change from greenish yellow to deep blue only in the presence of F- among other anions. In CH3CN, compound 1 was also sensitive to basic anions such as F- and AcO- ions. In solution, F- was differentiated from AcO- through a color change. While the yellow colored solution of 1 in acetonitrile was changed into deep blue in the presence of F-, AcO- ions gave a faint blue coloration. A similar colorimetric differentiation of F- from AcO- has been possible in CH3CN by a reusable Schiff base-linked Merrifield resin 1a or 1b.

Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Welcome to talk about 65-22-5, If you have any questions, you can contact Pati, C; Ghosh, K or send Email.

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

More research is needed about C12H9NO

Welcome to talk about 91-02-1, If you have any questions, you can contact Saha, R; Perveen, N; Nihesh, N; Sekar, G or send Email.. HPLC of Formula: C12H9NO

Authors Saha, R; Perveen, N; Nihesh, N; Sekar, G in WILEY-V C H VERLAG GMBH published article about C-H HYDROXYLATION; C(SP(2))-H BOND HYDROXYLATION; CARBOXYLIC-ACIDS; OXYGENATION; RUTHENIUM; FUNCTIONALIZATION; ACYLATION; PHENOL; DERIVATIVES; HETEROCYCLES in [Saha, Rajib; Perveen, Naziya; Nihesh, Naorem; Sekar, Govindasamy] Indian Inst Technol Madras, Dept Chem, Chennai 600036, India in 2019.0, Cited 61.0. HPLC of Formula: C12H9NO. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1

An efficient, reusable and stable binaphthyl stabilized Pd-nanoparticles (Pd-BNP) catalyzed the direct ortho-C-H hydroxylation of acetophenone oxime ethers under neutral and phosphine ligand-free condition has been developed. A readily available, economic, safe and greener oxidant oxone has been used in this direct ortho-hydroxylation. The scope of the reaction has been studied with various acetophenone oxime ethers including electron rich to electron deficient system and the reaction afforded only mono hydroxylated products in a highly regioselective manner. Several control experiment results confirmed that the oxone is the hydroxyl source. The Pd-BNP catalyst has been reused up to five times. The heterogeneous test confirmed that the reaction is catalyzed by the heterogeneous Pd-BNP catalyst.

Welcome to talk about 91-02-1, If you have any questions, you can contact Saha, R; Perveen, N; Nihesh, N; Sekar, G or send Email.. HPLC of Formula: C12H9NO

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

Chemical Research in 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.. Category: pyridine-derivatives

An article Synthesis and biological evaluation of 2,2-dimethylbenzopyran derivatives as potent neuroprotection agents WOS:000457379300022 published article about SUPEROXIDE-DISMUTASE; IN-VITRO; STROKE; ISCHEMIA; MUTANT; MICE in [Du, Fangyu; Zhou, Qifan; Shi, Yajie; Chen, Yuanguang; Fang, Wuhong; Chen, Guoliang] Shenyang Pharmaceut Univ, Key Lab Struct Based Drug Design & Discovery, Minist Educ, Shenyang 110016, Peoples R China; [Fu, Xiaoxiao; Yang, Jingyu] Shenyang Pharmaceut Univ, Dept Pharmacol, Shenyang 110016, Peoples R China in 2019.0, Cited 34.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1. Category: pyridine-derivatives

The development of novel neuroprotection agents is of great significance for the treatment of ischemic stroke. In this study, a series of compounds comprising 2,2-dimethylbenzopyran groups and cinnamic acid groups have been synthesized. Preferential combination principles and bioisostere that improved the neuroprotective effect of the compounds were identified for this series via biological activity assay in vitro. Meanwhile, a functional reversal group of the acrylamide amide resulted in the most active compounds. Among them, BN-07 significantly improved the morphology of neurons and obviously increased cell survival rate of primary neurons induced by oxygen glucose deprivation (OGD), superior to clinically used anti-ischemic stroke drug edaravone (Eda). Overall, our findings may provide an alternative strategy for the design of novel anti-ischemic stroke agents with more potency than Eda.

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.. Category: pyridine-derivatives

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