Category: pyridine-derivatives

An article Anticancer Activity of Platinum (II) Complex with 2-Benzoylpyridine by Induction of DNA Damage, S-Phase Arrest, and Apoptosis WOS:000534475000010 published article about CELL-CYCLE ARREST; G-QUADRUPLEX DNA; METAL-COMPLEXES; CISPLATIN-DNA; TUMOR; INHIBITION; BINDING; RECOGNITION; P53; PROLIFERATION in [Li, Yu-Lan; Gan, Xin-Li; Zhu, Rong-Ping; Jin, Junfei] Guilin Med Univ, Affiliated Hosp, Lab Hepatobiliary & Pancreat Surg, Guilin 541001, Guangxi, Peoples R China; [Li, Yu-Lan; Jin, Junfei] Guilin Med Univ, Guangxi Key Lab Mol Med Liver Injury & Repair, Guilin 541001, Guangxi, Peoples R China; [Li, Yu-Lan; Jin, Junfei] Guilin Med Univ, China USA Lipids Hlth & Dis Res Ctr, Guilin 541001, Guangxi, Peoples R China; [Wang, Xuehong; Huang, Zhaoquan] Guilin Med Univ, Dept Pathol, Affiliated Hosp, 15 Lequn Rd, Guilin 541001, Guangxi, Peoples R China; [Liao, Duan-Fang] Hunan Univ Chinese Med, Div Stem Cell Regulat & Applicat, State Key Lab Chinese Med Powder & Med Innovat Hu, Changsha, Hunan, Peoples R China; [Li, Yu-Lan] Guangxi Normal Univ, Sch Chem & Pharm, Key Lab Chem & Mol Engn Med Resources, 15 Yucai Rd, Guilin 541004, Peoples R China; [Zhu, Rong-Ping] Nanchang Univ, Ganzhou Peoples Hosp, Dept Emergency Traumat Surg, Affiliated Ganzhou Hosp, Ganzhou 341000, Jiangxi, Peoples R China in 2020.0, Cited 54.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1. Recommanded Product: 91-02-1

Objective: To overcome the disadvantages of cisplatin, numerous platinum (Pt) complexes have been prepared. However, the anticancer activity and mechanism of Pt(II) complexed with 2-benzoylpyridine [Pt(II)-Bpy]: [PtCl2(DMSO)L] (DMSO = dimethyl sulfoxide, L = 2-benzoylpyridine) in cancer cells remain unknown. Methods: Pt(II)-Bpy was synthesized and characterized by spectrum analysis. Its anticancer activity and underlying mechanisms were demonstrated at the cellular, molecular, and in vivo levels. Results: Pt(II)-Bpy inhibited tumor cell growth, especially HepG2 human liver cancer cells, with a half-maximal inhibitory concentration of 9.8 +/- 0.5 mu M, but with low toxicity in HL-7702 normal liver cells. Pt(H)Bpy induced DNA damage, which was demonstrated through a marked increase in the expression of cleaved-poly (ADP ribose) polymerase (PARP) and gamma-H2A histone family member X and a decrease in PARP expression. The interaction of Pt(II)-Bpy with DNA at the molecular level was most likely through an intercalation mechanism, which might be evidence of DNA damage. Pt(II)-Bpy initiated cell cycle arrest at the S phase in HepG2 cells. It also caused severe loss of the mitochondria( membrane potential; a decrease in the expression of caspase-9 and caspase-3; an increase in reactive oxygen species levels; the release of cytochrome c and apoptotic protease activation factor; and the activation of caspase-9 and caspase-3 in HepG2 cells, which in turn resulted in apoptosis. Meanwhile, changes in p53 and related proteins were observed including the upregulation of p53, the phosphorylation of p53, p21, B-cell lymphoma-2-associated X protein, and NOXA; and the down-regulation of B-cell lymphoma 2. Moreover, Pt(II)-Bpy displayed marked inhibitory effects on tumor growth in the HepG2 nude mouse model. Conclusion: Pt(II)-Bpy is a potential candidate for cancer chemotherapy.

Recommanded Product: 91-02-1. About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Li, YL; Gan, XL; Zhu, RP; Wang, XH; Liao, DF; Jin, JF; Huang, ZQ or concate me.

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

In 2019.0 ORG CHEM FRONT published article about 1,2,3-BENZOTRIAZIN-4-ONE DERIVATIVES; NEMATOCIDAL ACTIVITIES; CORROSION-INHIBITORS; SELECTIVE SYNTHESIS; BENZOTRIAZOLE; HETEROCYCLES; THERMOLYSIS; CYCLIZATION; ANNULATION; HYDRAZONES in [Cai, Yue-Ming; Zhang, Xin; An, Cui; Yang, Ye-Fei; Liu, Wei; Gao, Wen-Xia; Huang, Xiao-Bo; Zhou, Yun-Bing; Liu, Miao-Chang; Wu, Hua-Yue] Wenzhou Univ, Coll Chem & Mat Engn, Wenzhou 325035, Peoples R China in 2019.0, Cited 37.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1. Computed Properties of C12H9NO

We disclose a catalyst-free method to synthesize 1,2,3-triazoles rapidly via an oxidative N-N coupling strategy. Of particular note is that the one-step synthesis route to access [1,2,3] triazolo[1,5-a] pyridines from pyridin-2-ylmethanamine has been reported for the first time. This approach features no use of catalyst, extremely mild conditions and excellent efficiency.

About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Cai, YM; Zhang, X; An, C; Yang, YF; Liu, W; Gao, WX; Huang, XB; Zhou, YB; Liu, MC; Wu, HY or concate me.. Computed Properties of C12H9NO

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

An article Synthesis and Evaluation of Pyridoxal Hydrazone and Acylhydrazone Compounds as Potential Angiogenesis Inhibitors WOS:000507320500005 published article about ISONICOTINOYL HYDRAZONE; IRON CHELATORS; IN-VITRO; VITAMIN-B-6; EXPRESSION; APOPTOSIS; ANALOGS; TARGETS; GROWTH; AGENTS in [Chen, Xuyang; Li, Hui; Luo, Hongjun; Lin, Zhexuan; Luo, Wenhong] Shantou Univ, Coll Med, Bioanalyt Lab, Xinling Rd 22, Shantou, Guangdong, Peoples R China in 2019.0, Cited 45.0. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5. Application In Synthesis 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.

Application In Synthesis of 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. About 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride, If you have any questions, you can contact Chen, XY; Li, H; Luo, HJ; Lin, ZX; Luo, WH or concate me.

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

SDS of cas: 65-22-5. In 2020.0 J PHOTOCH PHOTOBIO A published article about DUAL-CHANNEL RECOGNITION; MOLECULAR LOGIC GATES; TURN-ON SENSOR; FLUORESCENT SENSOR; AQUEOUS-MEDIA; COLORIMETRIC SENSOR; SCHIFF-BASE; CYANIDE; CHEMOSENSOR; MAGNESIUM in [Yuwen, Zhiyang; Li, Hui; Pu, Shouzhi] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Jiangxi, Peoples R China; [Mei, Hongxin] Nanchang Normal Univ, Dept Chem, Nanchang 330013, Jiangxi, Peoples R China in 2020.0, Cited 70.0. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5.

A chemical sensor composed of pyridoxal hydrochloride schiff base based on diarylethene (1O) was synthesized. Its photochemical properties and selectivity to ions were further studied. The chemosensor could detect cyanide effectively and is almost undisturbed by other ions. When titrating CN-, the reaction aroused a distinct change in the absorption spectrum with the color change from transparent to yellow, and the fluorescence intensity centered at 562 nm was increased 68 folds. It also exhibited a good fluorescence sensing of Mg(2+ )with high selectivity and sensitivity. Upon addition of Mg2+, its emission intensity enhanced 110 folds, with the color change from dark to bright blue. Its good spectral response could be applied to molecular logic circuit. Moreover, the chemosensor could be made into test paper strips for the qualitative and quantitative detection of CN- and Mg2+.

About 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride, If you have any questions, you can contact Yuwen, ZY; Mei, HX; Li, H; Pu, SZ or concate me.. SDS of cas: 65-22-5

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

An article Development of Bronsted Base-Photocatalyst Hybrid Systems for Highly Efficient C-C Bond Formation Reactions of Malonates with Styrenes WOS:000574920200025 published article about CATALYTIC RADICAL-ADDITION; PHOTOCHEMICAL MONOALKYLATION; ALKENES; SUBSTITUTION; REACTIVITY in [Bas, Sebastian; Yamashita, Yasuhiro; Kobayashi, Shu] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan in 2020, Cited 31. HPLC of Formula: C6H5NO. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1

Bronsted base-photocatalyst hybrid systems have been developed for reactions of malonates with styrene derivatives. The concept of this process lies in the photo-oxidation of catalytic amounts of the enolate to form reactive radicals that react with alkene double bonds under mild reaction conditions. This is an example of visible-light-activated C-C bond formation reactions of malonates with alkenes to realize high atom economy under very mild reaction conditions without using any transition-metal catalysts.

HPLC of Formula: C6H5NO. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Bas, S; Yamashita, Y; Kobayashi, S or concate me.

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

Formula: C8H10ClNO3. I found the field of Chemistry very interesting. Saw the article Thiosemicarbazone ligand, nickel(II) and ruthenium(II) complexes based on vitamin B6 vitamer: The synthesis, different coordination behaviors and antioxidant activities published in 2020.0, Reprint Addresses Bal-Demirci, T (corresponding author), Istanbul Univ Cerrahpasa, Engn Fac, TR-34320 Istanbul, Turkey.; Ozdemir, N (corresponding author), Ondokuz May S Univ, Fac Educ, Dept Math & Sci Educ, TR-55139 Samsun, Turkey.. The CAS is 65-22-5. Through research, I have a further understanding and discovery of 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride.

Mixed ligand nickel(II) and ruthenium(II) complexes were synthesized from pyridoxal-N-allyl-thiosemicarbazone hydrochloride and triphenylphosphine. The structures of the complexes have been characterized by elemental analysis, IR, H-1 and P-31 NMR, conductivity, magnetic moment measurements and single-crystal X-ray diffraction technique. Based on X-ray crystallographic studies, a square-planar structure has been proposed for the Ni(II) complex, in which the thiosemicarbazone ligand acts as dianionic tridentate ONS ligand. In the case of the Ru(II) complex, the thiosemicarbazone is coordinated to metal atom as a monoanionic bidentate NS donor ligand in an octahedral geometry. Antioxidant activities of the ligand and its metal complexes were calculated as their trolox equivalent antioxidant capacities (TEAC) by CUPRAC method and DPPH assay. Both the ligand and its metal complexes were found to be antioxidant and are much more antioxidant at least 2.1 times than trolox, even, ligand is 3.5 times greater than that of trolox according to CUPRAC. A linear correlation (correlation coefficient R-2 = 0.9997) appeared between the obtained TEAC values by the two antioxidant assays.

Formula: C8H10ClNO3. About 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride, If you have any questions, you can contact Bal-Demirci, T; Guveli, S; Yesilyurt, S; Ozdemir, N; Ulkuseven, B or concate me.

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

Application In Synthesis of 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Poladian, Q; Sahin, O; Karakurt, T; Ilhan-Ceylan, B; Kurt, Y in [Poladian, Qumars; Ilhan-Ceylan, Berat; Kurt, Yasemin] Istanbul Univ Cerrahpasa, Engn Fac, Dept Chem, TR-34320 Istanbul, Turkey; [Sahin, Onur] Sinop Univ, Fac Hlth Sci, Dept Occupat Hlth & Safety, TR-57000 Sinop, Turkey; [Karakurt, Tuncay] Kirsehir Ahi Evran Univ, Fac Engn Architecture, Dept Chem & Proc Engn, TR-40100 Kirsehir, Turkey published A new zinc(II) complex with N2O2-tetradentate schiff-base derived from pyridoxal-S-methylthiosemicarbazone: Synthesis, characterization, crystal structure, DFT, molecular docking and antioxidant activity studies in 2021.0, Cited 69.0. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5.

A new unsymmetrical N2O2-tetradentate Schiff-base complex of zinc(II) was synthesized by the template reaction of pyridoxal-S-methylthiosemicarbazone and 2-hydroxy-4-methoxy-benzaldehyde as starting compounds. S-methylthiosemicarbazone (1) and zinc(II) complex [Zn(L)CH3OH] ( 2) were characterized by elemental analysis, FT-IR, UV-visible, H-1, and C-13 NMR spectra. The molecular structure of the complex (2) was determined by single crystal X-ray diffraction technique. The structure consists of a distorted square-pyramidal geometry around the central metal, Zn(II). Quantum chemical calculations were carried out using density functional theory DFT/B3LYP, 6-31G (d), and LanL2DZ basis sets for theoretical characterization of the compounds. The experimental and theoretical data were compared comprehensively. The potential energy distribution (PED) analysis was performed for the assignment of vibration frequencies. In order to support in vitro studies, molecular docking studies have been carried out so that the title compound can be an inhibitor of Epidermal Growth Factor Receptor (1 m17), and the relationship between calculated HOMO energies and docking studies has been examined. In addition, the total antioxidant capacity (as TEAC value) and free radical scavenging activity of the compounds were determined by Cupric Reducing Antioxidant Capacity (CUPRAC) and 1,1-diphenyl-2-picryl hydrazyl (DPPH) methods, respectively. (C) 2021 Elsevier Ltd. All rights reserved.

About 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride, If you have any questions, you can contact Poladian, Q; Sahin, O; Karakurt, T; Ilhan-Ceylan, B; Kurt, Y or concate me.. Application In Synthesis of 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride

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

Authors Lapier, M; Ballesteros-Garrido, R; Guzman-Rivera, D; Gonzalez-Herrera, F; Aguilera-Venegas, B; Moncada-Basualto, M; Ballesteros, R; Abarca, B; Pesce, B; Kemmerling, U; Olea-Azar, C; Maya, JD in FUTURE SCI LTD published article about CELL-PROLIFERATION; STRUCTURAL-BASIS; DRUG CANDIDATES; CHOLESTEROL; 14-ALPHA-DEMETHYLASE; INHIBITION; INSIGHTS; BINDING; CYP51; CHAIN in [Lapier, Michel; Guzman-Rivera, Daniela; Gonzalez-Herrera, Fabiola; Pesce, Barbara; Maya, Juan D.] Univ Chile, Fac Med, Inst Ciencias Biomed ICBM, Clin & Mol Pharmacol Program, Independencia 1027, Santiago 1027, Chile; [Ballesteros-Garrido, Rafael; Ballesteros, Rafael; Abarca, Belen] Univ Valencia, Fac Pharm, Dept Organ Chem, Avda Vicent Andres Estelles S-N, E-46100 Valencia, Spain; [Aguilera-Venegas, Benjamin; Moncada-Basualto, Mauricio; Olea-Azar, Claudio] Univ Chile, Fac Chem & Pharmaceut Sci, Free Rad & Antioxidants Lab, Inorgan & Analyt Dept, Santos Dumt 964, Santiago, Chile; [Moncada-Basualto, Mauricio] Univ Santiago Chile, Fac Chem & Biol, Dept Environm Sci, Santiago, Chile; [Kemmerling, Ulrike] Univ Chile, Fac Med, Inst Ciencias Biomed ICBM, Anat & Dev Biol Program, Independencia 1027, Santiago, Chile in 2019, Cited 38. Formula: C12H9NO. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1

Aim: To study a new series of [1,2,3] triazolo[1,5-alpha] pyridine derivatives as trypanocidal agents because current antichagasic pharmacologic therapy is only partially effective. Materials & methods: The effect of the series upon Trypanosoma cruzi epimastigotes and murine macrophages viability, cell cycle, cell death and on the metabolites of the sterol biosynthesis pathway was measured; also, docking in 14 alpha-demethylase was analyzed. Results: Compound 16 inhibits 14 alpha-demethylase producing an imbalance in the cholesterol/ergosterol synthesis pathway, as suggested by a metabolic control and theoretical docking analysis. Consequently, it prevented cell proliferation, stopping the cellular cycle at the G2/M phase, inducing cell death. Conclusion: Although the exact cell death mechanism remained elusive, this series can be used for the further rational design of novel antiparasitic molecules.

Formula: C12H9NO. About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Lapier, M; Ballesteros-Garrido, R; Guzman-Rivera, D; Gonzalez-Herrera, F; Aguilera-Venegas, B; Moncada-Basualto, M; Ballesteros, R; Abarca, B; Pesce, B; Kemmerling, U; Olea-Azar, C; Maya, JD or concate me.

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

In 2020.0 SYNTHESIS-STUTTGART published article about STEREOSELECTIVE ADDITION; DIMETHYLPHOSPHINE OXIDE; SYNERGISTIC EXTRACTION; CARBONYL-COMPOUNDS; PHOSPHORUS; ALKENES; CHALCOGENIDES; METHODOLOGY; ABSORPTION; COMPLEXES in [Gusarova, Nina K.; Ivanova, Nina I.; Khrapova, Kseniya O.; Volkov, Pavel A.; Telezhkin, Anton A.; Larina, Lyudmila I.; Afonin, Andrei V.; Pavlov, Dmitry V.; Trofimov, Boris A.] Russian Acad Sci, Siberian Branch, AE Favorsky Irkutsk Inst Chem, 1 Favorsky Str, Irkutsk 664033, Russia in 2020.0, Cited 69.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1. Quality Control of Phenyl(pyridin-2-yl)methanone

Tertiary alpha-hydroxyphosphine oxides have been synthesized via the catalyst- and solvent-free reaction between available secondary phosphine oxides and aliphatic, aromatic and heteroaromatic ketones at 20-62 degrees C in near to 96-98% yield. The developed method meets the requirements of green chemistry and the PASE (pot, atom, step economy) paradigm. According to quantum-chemical calculations at the B3LYP/6-311++G(d,p) level, the synthesized hydroxyphosphine oxides feature a weak (approximate to 3 kcal center dot mol(-1)) O-H center dot center dot center dot O=P intramolecular hydrogen bond.

About Phenyl(pyridin-2-yl)methanone, If you have any questions, you can contact Gusarova, NK; Ivanova, NI; Khrapova, KO; Volkov, PA; Telezhkin, AA; Larina, LI; Afonin, AV; Pavlov, DV; Trofimov, BA or concate me.. Quality Control of Phenyl(pyridin-2-yl)methanone

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

In 2020 J MOL STRUCT published article about BIOLOGICAL-PROPERTIES; NITRIC-OXIDE; CRYSTAL; DRUG; CANCER in [Rechitskaya, E. D.; Kuratieva, N., V; Lider, E., V; Eremina, J. A.; Kostin, G. A.] Nikolaev Inst Inorgan Chem SB RAS, Lavrentieva 3, Novosibirsk, Russia; [Rechitskaya, E. D.; Kuratieva, N., V; Lider, E., V; Eremina, J. A.; Eltsov, I., V; Kostin, G. A.] Novosibirsk State Univ, Pirogova 2, Novosibirsk, Russia; [Klyushova, L. S.] Inst Mol Biol & Biophys, Subdiv FRC FTM, 2-12 Timakova Str, Novosibirsk 630060, Russia; [Klyushova, L. S.] Sci Inst Clin & Expt Lymphol, Branch ICG SB RAS, 2 Timakova Str, Novosibirsk 630117, Russia in 2020, Cited 37. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6. SDS of cas: 614-18-6

Three novel ruthenium nitrosyl complexes [Ru(NO)Cl-3(InicMe)(2)] (1b), [RuNOCl3(NicEt)(2)] (1c) and [RuNOCl3(NicMe)(2)] (1d) (InicMe = methyl isonicotinate, NicEt = ethyl nicotinate, NicMe = methyl nicotinate)were prepared and crystal structure of the complexes were determined by single crystal XRD analysis. In all complexes, the organic ligands are coordinated by a pyridine nitrogen atom and located in trans-position each to other and in cis-position to NO group. In the crystal package of all compounds stacking interactions of two types were determined: pi(arene)-pi(arene) and pi(COO)-pi(arene) stacking. Finally, cytotoxicity of the compounds was tested on Hep2 and HepG2 cell lines. In the set of similar compounds mer-[RuNO(L)(2)Cl-3] (L = Py, gamma-Pic, beta-Pic, Inic-Alk, Nic-Alk), complexes with iso-nicotinic acid esters are the most toxic, while nicotinic acid derivatives are less toxic and compared with pyridine complex. (C) 2020 Elsevier B.V. All rights reserved.

SDS of cas: 614-18-6. About Ethyl nicotinate, If you have any questions, you can contact Rechitskaya, ED; Kuratieva, NV; Lider, EV; Eremina, JA; Klyushova, LS; Eltsov, IV; Kostin, GA or concate me.

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