Bromopyridine Methylpyridine Iodopyridine Chloropyridine Nitropyridine Hydroxypyridine Aminopyridine Benzylpyridinium Ethylpyridine Cyanopyridine Fluoropyridine Dihydropyridine Pyridine derivatives
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Pyridine compound

Bromopyridine Methylpyridine Iodopyridine Chloropyridine Nitropyridine Hydroxypyridine Aminopyridine Benzylpyridinium Ethylpyridine Cyanopyridine Fluoropyridine Dihydropyridine Pyridine derivatives
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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.

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Structure:
Chemical Name:
2,4-Dichloropyrido[3,2-d]pyrimidine
CAS:
39551-54-7
MF:
C7H3Cl2N3
Structure:
Chemical Name:
5-BROMO-2-METHOXY-3-CYANOPYRIDINE
CAS:
884495-39-0
MF:
C6H7BrN2O
Structure:
Chemical Name:
Methyl 5-hydroxynicotinate
CAS:
30766-22-4
MF:
C7H7NO3
Structure:
Chemical Name:
Pyridine, 5-bromo-2-ethyl-
CAS:
38749-90-5
MF:
C7H8BrN
Structure:
Chemical Name:
4-NITROPICOLINIC ACID
CAS:
13509-19-8
MF:
C6H4N2O4
Structure:
Chemical Name:
5-Fluoro-2-(trifluoromethyl)pyridine
CAS:
936841-73-5
MF:
C6H3F4N
Structure:
Chemical Name:
2-Nitropyridine-4-carboxylic acid
CAS:
33225-74-0
MF:
C6H4N2O4
Structure:
Chemical Name:
5-Bromo-3-methylpyridine-2-carboxylic acid methyl ester
CAS:
213771-32-5
MF:
C8H8BrNO2
Structure:
Chemical Name:
3-METHYL-4-PYRIDINECARBOXALDEHYDE
CAS:
74663-96-0
MF:
C7H7NO
Structure:
Chemical Name:
2-Chloro-5-pyridineacetonitrile
CAS:
39891-09-3
MF:
C7H5ClN2
Structure:
Chemical Name:
3,3'-DIPICOLYLAMINE
CAS:
1656-94-6
MF:
C12H13N3
Structure:
Chemical Name:
2-METHOXYPYRIDINE-5-BORONIC ACID PINACOL ESTER
CAS:
445264-61-9
MF:
C12H18BNO3
Structure:
Chemical Name:
2-Bromo-3-hydroxy-6-methylpyridine
CAS:
23003-35-2
MF:
C6H6BrNO
Structure:
Chemical Name:
1-METHYL-3,5-DINITRO-1H-PYRIDIN-2-ONE
CAS:
14150-94-8
MF:
C6H5N3O5
Structure:
Chemical Name:
PYRIDINE-2-CARBOXYLIC ACID HYDRAZIDE
CAS:
1452-63-7
MF:
C6H7N3O
Structure:
Chemical Name:
2-HYDROXY-3-METHYLPYRIDINE
CAS:
91914-04-4
MF:
C6H7NO
Structure:
Chemical Name:
5-Fluoro-2-forMylpyridine
CAS:
31181-88-1
MF:
C6H4FNO
Structure:
Chemical Name:
2-PHENOXYNICOTINONITRILE
CAS:
14178-15-5
MF:
C12H8N2O
Structure:
Chemical Name:
5-FLUORO-1H-PYRROLO[2,3-B]PYRIDINE
CAS:
866319-00-8
MF:
C7H5FN2
Structure:
Chemical Name:
2-Amino-5-bromo-3-(hydroxymethyl)pyridine
CAS:
335031-01-1
MF:
C6H7BrN2O
Structure:
Chemical Name:
4-broMo-2-(1,1,1-trifluoro-2-Methylpropan-2-yl)pyridine
CAS:
1357476-67-5
MF:
C9H9BrF3N
Structure:
Chemical Name:
4-chloro-N-ethyl-5-(trifluoroMethyl)pyriMidin-2-aMine
CAS:
1374829-47-6
MF:
C7H7ClF3N3
Structure:
Chemical Name:
(S)-1-(6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)ethanamine
CAS:
1980023-96-8
MF:
C10H11FN4
Structure:
Chemical Name:
3-BroMo-5fluoro-4-Methylpyridine
CAS:
1211517-76-8
MF:
C6H5BrFN
Structure:
Chemical Name:
N'-Hydroxy-2-(pyrrolidin-1-yl)benzimidamide
MF:
C11H15N3O
Structure:
Chemical Name:
1-BENZYL-PYRROLIDINE-3-CARBONITRILE
CAS:
10603-52-8
MF:
C12H14N2
Structure:
Chemical Name:
4-(2,2':6',2''-TERPYRIDIN-4'-YL)BENZALDEHYDE
CAS:
138253-30-2
MF:
C22H15N3O
Structure:
Chemical Name:
2-Amino-3-cyanopyridine-5-boronic Acid Pinacol Ester
CAS:
1246372-66-6
MF:
C12H16BN3O2
Structure:
Chemical Name:
5,6,7,8-Tetrahydro-1,7-naphthyridine hydrochloride
CAS:
1338707-67-7
MF:
C8H11ClN2
Structure:
Chemical Name:
sacubitril
CAS:
1038924-61-6
MF:
C17H17NO
Structure:
Chemical Name:
Methyl 2-(hydroxymethyl)nicotinate
CAS:
1697289-97-6
MF:
C8H9NO3
Structure:
Chemical Name:
xylocytidine
CAS:
3530-56-1
MF:
C9H13N3O5
Structure:
Chemical Name:
7-bromo-[1,2,4]triazolo[1,5-a]pyridin-2-amine
CAS:
882521-63-3
MF:
C6H5BrN4
Structure:
Chemical Name:
5-Methylpyridine-2,3-dicarboxylic acid dimethyl ester
CAS:
112110-16-4
MF:
C10H11NO4
Structure:
Chemical Name:
5-BROMO-1H-PYRAZOLO[3,4-B]PYRIDIN-3-YLAMINE
CAS:
405224-24-0
MF:
C6H5BrN4
Structure:
Chemical Name:
4-Bromo-2,2''-bipyridine
CAS:
14162-95-9
MF:
C10H7BrN2
Structure:
Chemical Name:
1-([1,2,4]triazolo[1,5-a]pyridin-6-yl)-2-(6-methylpyridin-2-yl)ethane-1,2-dione
CAS:
356560-84-4
MF:
C14H10N4O2
Structure:
Chemical Name:
2-(TRIFLUOROMETHYL)-4-HYDROXYPYRIDINE
CAS:
170886-13-2
MF:
C6H4F3NO
Structure:
Chemical Name:
2-chloro-5-methylpyridin-4-amine
CAS:
79055-62-2
MF:
C6H7ClN2
Structure:
Chemical Name:
5-AMINO-3-PYRIDINECARBONITRILE
CAS:
13600-47-0
MF:
C6H5N3
Structure:
Chemical Name:
4-[2-(4-Amino-1,2,5-oxadiazol-3-yl)-1-ethyl-7-[(3S)-3-piperidinylmethoxy]-1H-imidazo[4,5-c]pyridin-4-yl]-2-methyl-3-butyn-2-ol
CAS:
937174-76-0
MF:
C21H27N7O3
Structure:
Chemical Name:
2-Trifluoromethyl-6-pyridinecarboxylic acid
CAS:
131747-42-7
MF:
C7H4F3NO2
Structure:
Chemical Name:
S-23
CAS:
1010396-29-8
MF:
C18H13ClF4N2O3
Structure:
Chemical Name:
(R)-7-(benzyloxy)- 3,4,12,12a-tetrahydro- 1H-[1,4]oxazino[3,4- c]pyrido[2,1-f][1,2,4]- triazine-6,8-dione
CAS:
1985607-70-2
MF:
C17H17N3O4
Structure:
Chemical Name:
2-FLUORO-5-(HYDROXYMETHYL)PYRIDINE
CAS:
39891-05-9
MF:
C6H6FNO
Structure:
Chemical Name:
3,5-Dibromopyridine-4-carboxaldehyde
CAS:
70201-42-2
MF:
C6H3Br2NO
Structure:
Chemical Name:
3,5-DIBROMOPICOLINIC ACID
CAS:
61830-40-8
MF:
C6H3Br2NO2
Structure:
Chemical Name:
2-CHLORO-6-METHYLPYRIDINE-3-BORONIC ACID
CAS:
536693-95-5
MF:
C6H7BClNO2
Structure:
Chemical Name:
2-(2,4-DIFLUOROPHENOXY)-3-NITROPYRIDINE
CAS:
175135-62-3
MF:
C11H6F2N2O3
Structure:
Chemical Name:
2-Benzoylpyridine
CAS:
91-02-1
MF:
C12H9NO
Structure:
Chemical Name:
2-(2-FLUOROPHENOXY)-3-NITROPYRIDINE
CAS:
175135-65-6
MF:
C11H7FN2O3
Structure:
Chemical Name:
5,6-Dimethoxy-2-(4-piperidinylmethyl)-1-indanone hydrochloride
CAS:
120013-39-0
MF:
C17H24ClNO3
Chemical Name:
5-Methy-2-Chloro-4-pyridylboronic acid
Structure:
Chemical Name:
4-Bromopyridine-3-carboxaldehyde
CAS:
154105-64-3
MF:
C6H4BrNO
Structure:
Chemical Name:
4-(5-Nitropyridin-2-yl)morpholine
CAS:
26820-62-2
MF:
C9H11N3O3
Structure:
Chemical Name:
3-AMINOMETHYL-6-(TRIFLUOROMETHYL)PYRIDINE
CAS:
387350-39-2
MF:
C7H7F3N2
Structure:
Chemical Name:
3-Bromo-4-trifluoromethylpyridine
CAS:
936841-70-2
MF:
C6H3BrF3N
Structure:
Chemical Name:
(6-Methylpyridin-3-yl)methanol
CAS:
34107-46-5
MF:
C7H9NO
Structure:
Chemical Name:
2H-Pyrrolo[3,2-c]pyridin-2-one,1,3-dihydro-(9CI)
CAS:
134682-54-5
MF:
C7H6N2O
Structure:
Chemical Name:
3-Fluoropyridine-4-carbonitrile
CAS:
113770-88-0
MF:
C6H3FN2
Structure:
Chemical Name:
3,4,5-TRIBROMOPYRIDINE
CAS:
2457-48-9
MF:
C5H2Br3N
Structure:
Chemical Name:
2-CYANO-3-(3-PYRIDINYL)ACRYLIC ACID
CAS:
103029-74-9
MF:
C9H6N2O2
Structure:
Chemical Name:
6-(2,2,2-TRIFLUOROETHOXY)PYRIDINE-3-CARBONITRILE
CAS:
159981-18-7
MF:
C8H5F3N2O
Structure:
Chemical Name:
4-(2-(5-Ethyl-2-pyridyl)ethoxy)nitrobenzene
CAS:
85583-54-6
MF:
C15H16N2O3
Structure:
Chemical Name:
2-chloro-5-(trifluoromethyl)pyridine-3-boronic acid
CAS:
536693-96-6
MF:
C6H4BClF3NO2
Structure:
Chemical Name:
5-FLUORO-2,3-DIHYDRO-(1H)-INDOLE
CAS:
94805-51-3
MF:
C6H4N2O
Structure:
Chemical Name:
6-Trifluoromethyl-pyridine-2-carboxylic acid ethyl ester
CAS:
1010422-92-0
MF:
C9H8F3NO2
Structure:
Chemical Name:
2,5-DICHLORO-4-(4,4,5,5-TETRAMETHYL-[1,3,2]-DIOXABOROLAN-2-YL)PYRIDINE
CAS:
1073353-98-6
MF:
C11H14BCl2NO2
Structure:
Chemical Name:
2-(5-bromopyridin-2-yl)acetic acid
CAS:
192642-85-6
MF:
C7H6BrNO2
Structure:
Chemical Name:
2-Pyridinethiol 1-oxide
CAS:
1121-31-9
MF:
C5H5NOS
Structure:
Chemical Name:
PYRIDINE, 2-CHLORO-4-HYDRAZINO-
CAS:
700811-29-6
MF:
C5H6ClN3
Structure:
Chemical Name:
4-Phenyl-1,2,3,6-tetrahydropyridine hydrochloride
CAS:
43064-12-6
MF:
C11H14ClN
Structure:
Chemical Name:
2,3-DICHLORO-5-FORMYLPYRIDINE
CAS:
71690-05-6
MF:
C6H3Cl2NO
Structure:
Chemical Name:
4-AMINO-3,5-DIBROMO-2-METHYLPYRIDINE
CAS:
126325-54-0
MF:
C6H6Br2N2
Structure:
Chemical Name:
(6-AMINO-3-PYRIDINYL)METHANOL
CAS:
113293-71-3
MF:
C6H8N2O
Structure:
Chemical Name:
(4-CHLORO-BENZYL)-PYRIDIN-3-YLMETHYL-AMINE
CAS:
212392-65-9
MF:
C13H13ClN2
Structure:
Chemical Name:
2-chloro-6,7-dihydro-5H-pyrrolo[3,4-b]pyridine
CAS:
810668-57-6
MF:
C7H7ClN2
Structure:
Chemical Name:
3-Methoxy-5-nitropyridin-2-ol
CAS:
75710-99-5
MF:
C6H6N2O4
Structure:
Chemical Name:
5-CYANO-3-PYRIDINECARBOXYLIC ACID METHYL ESTER
CAS:
106726-82-3
MF:
C8H6N2O2
Structure:
Chemical Name:
6-BROMO-2,2'-BIPYRIDINE
CAS:
10495-73-5
MF:
C10H7BrN2
Structure:
Chemical Name:
2,5-DICHLORO-3-(4,4,5,5-TETRAMETHYL-[1,3,2]-DIOXABOROLAN-2-YL)PYRIDINE
CAS:
1073371-98-8
MF:
C11H14BCl2NO2
Structure:
Chemical Name:
2H-Pyrido[3,2-b][1,4]oxazin-3(4H)-one
CAS:
20348-09-8
MF:
C7H6N2O2
Structure:
Chemical Name:
6-AMINO-2,2-DIMETHYL-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE
CAS:
1002726-62-6
MF:
C9H11N3O2
Structure:
Chemical Name:
4H-PYRIDO[1,2-A]PYRIMIDIN-4-ONE, 7-METHYL-2-(4-MORPHOLINYL)-9-[1-(PHENYLAMINO)ETHYL]-
CAS:
663619-89-4
MF:
C21H24N4O2
Structure:
Chemical Name:
5-CHLORO-3-CYANOPYRIDINE
CAS:
51269-82-0
MF:
C6H3ClN2
Structure:
Chemical Name:
5-bromo-2-methoxy-3-(trifluoromethyl)pyridine
CAS:
1214377-42-0
MF:
C7H5BrF3NO
Structure:
Chemical Name:
4-AMino-5-Methylpyridin-2-ol
CAS:
95306-64-2
MF:
C6H8N2O
Structure:
Chemical Name:
4-METHOXYPYRIDINE-2-CARBONITRILE
CAS:
36057-44-0
MF:
C7H6N2O
Structure:
Chemical Name:
3-BROMO-2-FLUORO-4-IODOPYRIDINE
CAS:
884494-52-4
MF:
C5H2BrFIN
Structure:
Chemical Name:
5-BROMO-4,6-DIMETHYL-2-OXO-1,2-DIHYDRO-3-PYRIDINECARBONITRILE
CAS:
23819-87-6
MF:
C8H7BrN2O
Structure:
Chemical Name:
3,4-DIFLUOROPYRIDINE
CAS:
82878-63-5
MF:
C5H3F2N
Structure:
Chemical Name:
6-(DIMETHYLAMINO)NICOTINONITRILE
CAS:
154924-17-1
MF:
C8H9N3
Structure:
Chemical Name:
3-AMINO-2-(METHYLAMINO)-5-(TRIFLUOROMETHYL)PYRIDINE
CAS:
172648-55-4
MF:
C7H8F3N3
Structure:
Chemical Name:
2,5-DICHLOROPYRIDINE-3-CARBONYL CHLORIDE
CAS:
78686-87-0
MF:
C6H2Cl3NO
Structure:
Chemical Name:
2,3-DICHLOROPYRIDINE-4-BORONIC ACID
MF:
C5H4BCl2NO2
Structure:
Chemical Name:
3-CHLORO-2-(4-MORPHOLINO)PYRIDINE
CAS:
54231-36-6
MF:
C9H11ClN2O
Structure:
Chemical Name:
N-BOC-1,2,3,6-TETRAHYDROPYRIDINE
CAS:
85838-94-4
MF:
C10H17NO2
Structure:
Chemical Name:
2-Chloro-5-hydroxypyrimidine
CAS:
4983-28-2
MF:
C4H3ClN2O
Structure:
Chemical Name:
2-Bromo-5-ethynylpyridine
CAS:
569672-28-2
MF:
C7H4BrN
Structure:
Chemical Name:
4'-(4-BROMOPHENYL)-2,2':6',2''-TERPYRIDINE
CAS:
89972-76-9
MF:
C21H14BrN3