天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Pyridine compound

Pyridine compound is one of the most widely developed and used heterocyclic compound. As an important fine chemical raw material, its derivatives mainly include alkyl pyridine, halogenated pyridine, aminopyridine, bromo pyridine, picoline , iodine pyridine, chloropyridine, nitropyridine-hydroxypyridine, benzyl pyridine, ethyl pyridine, pyridine cyano, fluoro pyridine, dihydropyridine, etc., in which the pesticide accounts for about 50% of the total consumption of pyridine products, feed additive about 30% and  medicine and other areas 20%.

Pyridine is a colorless or slightly yellow liquid that has weak alkaline and special odor. It is an important chemical raw material and solvent, which naturally presents in coal tar, shale oil, gas and petroleum and is miscible with most of the water, alcohols, ethers, petroleum ether, oils, benzene, chloroform and other organic solvents.

The important derivatives of pyridine mainly include nicotinic acid, nicotinamide, isonicotinic hydrazide, nicotine, strychnine, and vitamin B6.

Pyridine has a close hexagonal structure that is similar to benzene. Because of the electron-withdrawing effect of the nitrogen atom in the ring, the electron density of 2,4,6 positions is less than that of 3,5 positions. In an acidic medium, electrophilic substitution reactions occur in the 3,5 positions and nucleophilic reactions, such as amination, alkylation, arylation, acylation, occur in the 2,4,6 positions. Pyridine is a weak tertiary amine, which can form different water-soluble salts with various acids (such as picric acid, perchloric acid or the like) in an ethanol solution. Due to the alkaline of pyridine, it can generate hydrochloride (C5H5N•HCl)with hydrochloric acid. In the effect of nickel catalyst at 200 ℃ and 15-30MPa, it can generate piperidine via hydrogenation or electrolysis reduction. The reduction of pyridine is easier than benzene, while the oxidation is more difficult than benzene. But we can oxidize pyridine by the catalysis of hydrogen peroxide or peroxy acids. N-pyridine oxide is an important pyridine derivative, which is easier for the happen of aryl group electrophilic substitution reaction because the oxidation of nitrogen atoms make the formation of positively charged pyridinium cation impossible. Electrophilic substitutions, such as pyridine nitration, sulfonation, halogenation, are relatively difficult, but the previous actions are slightly easier than halogenation. We can obtain 3,5-dichloro-pyridine or 3,4,5-trichloro pyridine via pyridine nitration and sulfonation at more than 200℃. Pyridine can form many crystalline complex compounds with various metal ions.

Click on the specific product, view the latest prices of the products, information, serving information
Structure Chemical Name CAS MF
2-hydroxy-3,5,6--trichloropyridine 2-hydroxy-3,5,6--trichloropyridine C5H2Cl3NO
4-Cyanopyridine-3-boronic acid neopentyl glycol ester 4-Cyanopyridine-3-boronic acid neopentyl glycol ester 868944-72-3 C11H13BN2O2
Thieno[2,3-c]pyridin-7-amine (9CI) Thieno[2,3-c]pyridin-7-amine (9CI) 215454-72-1 C7H6N2S
5-Bromo-2-fluoro-3-methylpyridine 5-Bromo-2-fluoro-3-methylpyridine C6H5BrFN
3-IODO-4-NITROPYRIDINE 3-IODO-4-NITROPYRIDINE 89283-70-5 C5H3IN2O2
4-BROMO-5-FLUORO-2-HYDROXYPYRIDINE 4-BROMO-5-FLUORO-2-HYDROXYPYRIDINE C5H3BrFNO
2-PHENOXY ISONICOTINIC ACID 2-PHENOXY ISONICOTINIC ACID 51362-08-4 C12H9NO3
2-AMINO-3-CHLORO-5-CYANOPYRIDINE, 95+% 2-AMINO-3-CHLORO-5-CYANOPYRIDINE, 95+% C6H4ClN3
6-CHLORO-5-METHYLPYRIDINE-3-BORONIC ACID, PINACOL ESTER 6-CHLORO-5-METHYLPYRIDINE-3-BORONIC ACID, PINACOL ESTER 1010101-07-1 C12H17BClNO2
6-Amino-5-methylpyridine-3-sulfonic acid 6-Amino-5-methylpyridine-3-sulfonic acid 40741-48-8 C6H8N2O3S
N-(3-bromophenyl)-2-chloropyridine-4-carboxamide N-(3-bromophenyl)-2-chloropyridine-4-carboxamide 1019466-39-7 C12H8BrClN2O
2-(bromomethyl)-3-fluoropyridine 2-(bromomethyl)-3-fluoropyridine 122307-44-2 C6H5BrFN
2,4,6-TRI-TERT-BUTYLPYRIDINE 2,4,6-TRI-TERT-BUTYLPYRIDINE 20336-15-6 C17H29N
(2-CYANO-3-PYRIDINYL)CARBAMIC ACID, 1,1-DIMETHYL ETHYL ESTER (2-CYANO-3-PYRIDINYL)CARBAMIC ACID, 1,1-DIMETHYL ETHYL ESTER C11H13N3O2
2-HYDRAZINO-6-(TRIFLUOROMETHYL)PYRIDINE 2-HYDRAZINO-6-(TRIFLUOROMETHYL)PYRIDINE 94239-06-2 C6H6F3N3
4-BROMO-3-FLUORO PYRIDINE 4-BROMO-3-FLUORO PYRIDINE C5H3BrFN
2-SULFOISONICOTINIC ACID 2-SULFOISONICOTINIC ACID 18616-07-4 C6H5NO5S
5-CHLORO-3-IODOINDOLE 5-CHLORO-3-IODOINDOLE 85092-85-9 C8H5ClIN
2-AMINO-3-CHLORO-5-FLUOROPYRIDINE 2-AMINO-3-CHLORO-5-FLUOROPYRIDINE 1214330-79-6 C5H4ClFN2
3-Bromo-5-Chloro-2-Picoline 3-Bromo-5-Chloro-2-Picoline 131036-39-0 C6H5BrClN
Ethanol, 2-(3-pyridinyloxy)- (9CI) Ethanol, 2-(3-pyridinyloxy)- (9CI) 119967-49-6 C7H9NO2
Isoxazolo[5,4-c]pyridin-3-amine (9CI) Isoxazolo[5,4-c]pyridin-3-amine (9CI) 114080-94-3 C6H5N3O
2(1H)-Pyridinone, 3-(aminomethyl)-4,6-dimethyl- (9CI) 2(1H)-Pyridinone, 3-(aminomethyl)-4,6-dimethyl- (9CI) 771579-27-2 C8H12N2O
5-Chloro-2-fluoro—4-picoline 5-Chloro-2-fluoro—4-picoline
3H-Pyrido(3,4-b)indole, 4,9-dihydro- 3H-Pyrido(3,4-b)indole, 4,9-dihydro- 4894-26-2 C11H10N2
3-Pyridinemethanamine,alpha-(1-methylethyl)-(9CI) 3-Pyridinemethanamine,alpha-(1-methylethyl)-(9CI) 343270-47-3 C9H14N2
4-Pyridinethiol,2-amino-(9CI) 4-Pyridinethiol,2-amino-(9CI) 683738-44-5 C5H6N2S
2-Pyridinemethanamine,3-fluoro-(9CI) 2-Pyridinemethanamine,3-fluoro-(9CI) 312904-51-1 C6H7FN2
3-Pyridinemethanamine,6-amino-(9CI) 3-Pyridinemethanamine,6-amino-(9CI) 156973-09-0 C6H9N3
1H-Pyrido[2,3-b][1,4]oxazin-2(3H)-one(9CI) 1H-Pyrido[2,3-b][1,4]oxazin-2(3H)-one(9CI) 136742-83-1 C7H6N2O2
1H-Pyrrolo[3,2-b]pyridine,7-methyl-(9CI) 1H-Pyrrolo[3,2-b]pyridine,7-methyl-(9CI) 357263-42-4 C8H8N2
2-Pyridinemethanamine,alpha-cyclopropyl-(9CI) 2-Pyridinemethanamine,alpha-cyclopropyl-(9CI) 535925-68-9 C9H12N2
2-Pyridinesulfonamide,4-methyl-(9CI) 2-Pyridinesulfonamide,4-methyl-(9CI) 65938-78-5 C6H8N2O2S
2-PIVALOYLAMINO-6-PICOLINE 2-PIVALOYLAMINO-6-PICOLINE 86847-79-2 C11H16N2O
6-Bromo-8-nitrotetrazolo[1,5-a]pyridine 6-Bromo-8-nitrotetrazolo[1,5-a]pyridine 16098-20-7 C5H2BrN5O2
8-Chloro-3-methyl-[1,2,4]triazolo[4,3-a]pyridine 8-Chloro-3-methyl-[1,2,4]triazolo[4,3-a]pyridine 929000-42-0 C7H6ClN3
6-Chloro-3-hydroxy-2-nitropyridine 6-Chloro-3-hydroxy-2-nitropyridine 887471-39-8 C5H3ClN2O3
2-Chloro-3,6-dibromopyridine 2-Chloro-3,6-dibromopyridine C5H2Br2ClN
2-chloro-N-ethyl-N-phenylpyridine-4-carboxamide 2-chloro-N-ethyl-N-phenylpyridine-4-carboxamide 1019383-76-6 C14H13ClN2O
3-METHYL-PYRIDINE-4-CARBOXAMIDE 3-METHYL-PYRIDINE-4-CARBOXAMIDE 251101-36-7 C7H8N2O
2,5-Dimethoxy-4-methyl-3-nitropyridine 2,5-Dimethoxy-4-methyl-3-nitropyridine 1092349-78-4 C8H10N2O4
4-(2-AMinoethyl)pyridin-2(1H)-one dihydrobroMide 4-(2-AMinoethyl)pyridin-2(1H)-one dihydrobroMide 170026-03-6 C7H10N2O2·2HBr
2-Chloro-3-hydroxy-4-methylpyridine 2-Chloro-3-hydroxy-4-methylpyridine C6H6ClNO
5-(4-Bromophenyl)-2-chloropyridine-3-carboxaldehyde 5-(4-Bromophenyl)-2-chloropyridine-3-carboxaldehyde 1119449-39-6 C12H7BrClNO
METHYL 3-NITROPYRIDINE-2-CARBOXYLATE METHYL 3-NITROPYRIDINE-2-CARBOXYLATE 103698-08-4 C7H6N2O4
2-Cyano-3-pyridineboronic acid 2-Cyano-3-pyridineboronic acid C6H5BN2O2
4-(TRIFLUOROMETHYL)PYRIDINE-3-CARBOXYLIC ACID HYDRAZIDE 4-(TRIFLUOROMETHYL)PYRIDINE-3-CARBOXYLIC ACID HYDRAZIDE 175204-84-9 C7H6F3N3O
2-ACETAMIDO-6-AMINOPYRIDINE 2-ACETAMIDO-6-AMINOPYRIDINE C7H9N3O
4-CHLORO-N-DIISOPROPYL-PYRIDINE-2-CARBOXAMIDE 4-CHLORO-N-DIISOPROPYL-PYRIDINE-2-CARBOXAMIDE 168428-76-0 C12H17ClN2O
2-Bromo-3-ethoxypyridine 2-Bromo-3-ethoxypyridine 89694-54-2 C7H8BrNO
2-Chloro-3-Methyl-4-Iodopyridine 2-Chloro-3-Methyl-4-Iodopyridine C6H5ClIN
4-Bromo-3-ethoxypyridine 4-Bromo-3-ethoxypyridine 17117-21-4 C7H8BrNO
6-Methyl-4-nitropyridine-2-carboxylic acid 6-Methyl-4-nitropyridine-2-carboxylic acid 30235-16-6 C7H6N2O4
3-Chloro-6-hydroxy-5-nitropyridine 3-Chloro-6-hydroxy-5-nitropyridine C5H3ClN2O3
Dichloro[1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene](benzylidene)bis(3-bromopyridine)ruthenium(II) Dichloro[1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene](benzylidene)bis(3-bromopyridine)ruthenium(II) 900169-53-1 C38H39Br2Cl2N4Ru
3-Bromo-2-chloro-4-methyl-5-nitropyridine 3-Bromo-2-chloro-4-methyl-5-nitropyridine 1049706-73-1 C6H4BrClN2O2
4-bromo-6-chloropicolinic acid 4-bromo-6-chloropicolinic acid 1060805-66-4 C6H3BrClNO2
N-[4-[(2-Amino-3-chloropyridin-4-yl)oxy]-3-fluorophenyl]-4-ethoxy-1-(4-fluorophenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide N-[4-[(2-Amino-3-chloropyridin-4-yl)oxy]-3-fluorophenyl]-4-ethoxy-1-(4-fluorophenyl)-2-oxo-1,2-dihydropyridine-3-carboxamide 1025720-94-8 C25H19ClF2N4O4
7,8-dihydro-8-oxo-7-phenyl-pyrido[2,3-d]pyridazine-5-carboxylic acid 7,8-dihydro-8-oxo-7-phenyl-pyrido[2,3-d]pyridazine-5-carboxylic acid 13694-12-7 C14H9N3O3
6-fluoropyridine-3-sulfonyl chloride 6-fluoropyridine-3-sulfonyl chloride 1025509-80-1 C5H3ClFNO2S
2,6-Bis[1-[(2,6-diMethylphenyl)iMino]ethyl]pyridine 2,6-Bis[1-[(2,6-diMethylphenyl)iMino]ethyl]pyridine 204203-16-7 C25H27N3
5-BroMo-4-hydroxynicotinic acid 5-BroMo-4-hydroxynicotinic acid 1052114-83-6 C6H4BrNO3
 Alpelisib (BYL719) Alpelisib (BYL719) 1217486-61-7 C19H22F3N5O2S
2,5-DiaMinopyridine hydrochloride 2,5-DiaMinopyridine hydrochloride 119261-84-6 C5H8ClN3
N-(3,5-Dichloro-4-pyridinyl)-3,4-bis(difluoroMethoxy)benzaMide N-(3,5-Dichloro-4-pyridinyl)-3,4-bis(difluoroMethoxy)benzaMide 162401-30-1 C14H8Cl2F4N2O3
ALPHA-PYRIDOIN ALPHA-PYRIDOIN 1141-06-6 C12H10N2O2
4-ETHOXYPYRIDINE 4-ETHOXYPYRIDINE 33399-46-1 C7H9NO
4-CHLORO-N,N-DIMETHYL-PYRIDINE-2-CARBOXAMIDE 4-CHLORO-N,N-DIMETHYL-PYRIDINE-2-CARBOXAMIDE 114780-06-2 C8H9ClN2O
2-(1-PYRROLIDINYL)NICOTINIC ACID 2-(1-PYRROLIDINYL)NICOTINIC ACID 690632-36-1 C10H12N2O2
(5-METHYLPYRIDIN-3-YL)METHANOL (5-METHYLPYRIDIN-3-YL)METHANOL 102074-19-1 C7H9NO
3-NITRO-2-PYRIDINESULFENYL CHLORIDE 3-NITRO-2-PYRIDINESULFENYL CHLORIDE 68206-45-1 C5H3ClN2O2S
2-ETHOXY-4-PYRIDINECARBOXYLIC ACID 2-ETHOXY-4-PYRIDINECARBOXYLIC ACID 91940-86-2 C8H9NO3
NIMODIPINE RELATED COMPOUND A (50 MG) (2-METHOXYETHYL  1-METHYLETHYL 2,6-DIMETHYL-4-(3-NITROPHENYL)PYRIDINE-3,5-DICARBOXYLATE) NIMODIPINE RELATED COMPOUND A (50 MG) (2-METHOXYETHYL 1-METHYLETHYL 2,6-DIMETHYL-4-(3-NITROPHENYL)PYRIDINE-3,5-DICARBOXYLATE) 85677-93-6 C21H24N2O7
3-BROMO-6-METHYLPICOLINONITRILE 3-BROMO-6-METHYLPICOLINONITRILE C7H5BrN2
2-HYDRAZINOISONICOTINIC ACID 2-HYDRAZINOISONICOTINIC ACID 887589-25-5 C6H7N3O2
6-BROMO-5-IODOPYRIDIN-3-OL 6-BROMO-5-IODOPYRIDIN-3-OL 697300-70-2 C5H3BrINO
(6-BROMO-PYRIDIN-3-YL)-ACETONITRILE (6-BROMO-PYRIDIN-3-YL)-ACETONITRILE 144873-99-4 C7H5BrN2
2-chloro-4-pyridone 2-chloro-4-pyridone 17228-67-0 C5H4ClNO
1-(5-Ethylpyridin-2-yl)ethane-1,2-diol 1-(5-Ethylpyridin-2-yl)ethane-1,2-diol 646519-83-7 C9H13NO2
3-Chloro-2,4-difluoropyridine 3-Chloro-2,4-difluoropyridine 851179-01-6 C5H2ClF2N
2-Chloro-3-Bromopyridine-4-Boronic acid 2-Chloro-3-Bromopyridine-4-Boronic acid C5H4BBrClNO2
3,4-diamino-5-bromopyridine 3,4-diamino-5-bromopyridine C5H6BrN3
3-(4-METHOXYBENZOYL)-PYRIDINE-2-CARBOXYLIC ACID 3-(4-METHOXYBENZOYL)-PYRIDINE-2-CARBOXYLIC ACID 116060-92-5 C14H11NO4
3,5,6-TRIFLUORO-PYRIDIN-2-YLAMINE 3,5,6-TRIFLUORO-PYRIDIN-2-YLAMINE 3534-50-7 C5H3F3N2
TERT-BUTYL 4-CHLORO-3-IODOPYRIDIN-2-YLCARBAMATE TERT-BUTYL 4-CHLORO-3-IODOPYRIDIN-2-YLCARBAMATE 868733-96-4 C10H12ClIN2O2
(S)-Ketorolac (S)-Ketorolac 66635-92-5 C15H13NO3
oglemilast oglemilast 778576-62-8 C20H13Cl2F2N3O5S
6-pivalamidopyridine-3-boronic acid pinacol ester 6-pivalamidopyridine-3-boronic acid pinacol ester 1092119-20-4 C16H25BN2O3
(R)-4-(1-Aminoethyl)-N-1H-pyrrolo[2,3-b]pyridin-4-ylbenzamide (R)-4-(1-Aminoethyl)-N-1H-pyrrolo[2,3-b]pyridin-4-ylbenzamide 199433-58-4 C16H16N4O
Risperidone N-Oxide Risperidone N-Oxide 832747-55-4 C23H27FN4O3
2,3,5-trichloro-4,6-difluoropyridine 2,3,5-trichloro-4,6-difluoropyridine 34415-31-1 C5Cl3F2N
6-Aminopyridine-3-sulfonyl chloride 6-Aminopyridine-3-sulfonyl chloride 289483-92-7 C5H5ClN2O2S
3-Bromo-2-cyanopyridine 3-Bromo-2-cyanopyridine 555758-02-6 C6H3BrN2
methyl 4-amino-6-chloropicolinate methyl 4-amino-6-chloropicolinate 1235475-17-8 C7H7ClN2O2
3-methoxy-6-nitro picolin aldehyde 3-methoxy-6-nitro picolin aldehyde C7H6N2O4
3,5-Dinitropyridine-4-carbonitrile 3,5-Dinitropyridine-4-carbonitrile 98138-12-6 C6H2N4O4
Ethyl 4-(3-AMinophenyl)-5-(Methoxycarbonyl)-2,6-diMethyl-1,4-dihydropyridine-3-carboxylate Ethyl 4-(3-AMinophenyl)-5-(Methoxycarbonyl)-2,6-diMethyl-1,4-dihydropyridine-3-carboxylate 138135-48-5 C18H22N2O4
3-Fluoropyridine-2-carboxylic Acid Hydrochloride 3-Fluoropyridine-2-carboxylic Acid Hydrochloride 1260890-41-2 C6H5ClFNO2
1-(4-Fluorophenyl)-4-Methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile 1-(4-Fluorophenyl)-4-Methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile 1267968-10-4 C13H9FN2O
1-n-Butyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyriMidine-2-carboxylic acid, 96% 1-n-Butyl-4-oxo-1,4-dihydropyrido[1,2-a]pyrrolo[2,3-d]pyriMidine-2-carboxylic acid, 96% 1086386-75-5 C15H15N3O3
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.