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:
1-Hexadecylpyridinium bromide
CAS:
140-72-7
MF:
C21H38BrN
Structure:
Chemical Name:
4-(Trifluoromethyl)nicotinic acid
CAS:
158063-66-2
MF:
C7H4F3NO2
Structure:
Chemical Name:
Pyridine hydrochloride
CAS:
628-13-7
MF:
C5H6ClN
Structure:
Chemical Name:
2-Hydroxynicotinic acid
CAS:
609-71-2
MF:
C6H5NO3
Structure:
Chemical Name:
4,4'-DIBROMO-2,2'-BIPYRIDINE
CAS:
18511-71-2
MF:
C10H6Br2N2
Structure:
Chemical Name:
3-Bromo-5-methoxypyridine
CAS:
50720-12-2
MF:
C6H6BrNO
Structure:
Chemical Name:
Methyl 2-aminopyridine-4-carboxylate
CAS:
6937-03-7
MF:
C7H8N2O2
Structure:
Chemical Name:
2-Bromo-6-methoxypyridine
CAS:
40473-07-2
MF:
C6H6BrNO
Structure:
Chemical Name:
2,6-Pyridinedicarboxylic acid
CAS:
499-83-2
MF:
C7H5NO4
Structure:
Chemical Name:
Isonicotinic acid
CAS:
55-22-1
MF:
C6H5NO2
Structure:
Chemical Name:
(2-Chloro-3-pyridinyl)methanol
CAS:
42330-59-6
MF:
C6H6ClNO
Structure:
Chemical Name:
4-Acetylpyridine
CAS:
1122-54-9
MF:
C7H7NO
Structure:
Chemical Name:
3,5-Pyridinedicarboxylic acid
CAS:
499-81-0
MF:
C7H5NO4
Structure:
Chemical Name:
5-Bromopyridine-2-carboxylic acid
CAS:
30766-11-1
MF:
C6H4BrNO2
Structure:
Chemical Name:
2-Methoxy-5-pyridineboronic acid
CAS:
163105-89-3
MF:
C6H8BNO3
Structure:
Chemical Name:
2-Amino-3-pyridinecarboxaldehyde
CAS:
7521-41-7
MF:
C6H6N2O
Structure:
Chemical Name:
6-Fluoronicotinic acid
CAS:
403-45-2
MF:
C6H4FNO2
Structure:
Chemical Name:
3-Pyridylacetic acid hydrochloride
CAS:
6419-36-9
MF:
C7H8ClNO2
Structure:
Chemical Name:
Nipecotic acid
CAS:
498-95-3
MF:
C6H11NO2
Structure:
Chemical Name:
N-Boc-3-pyrrolidinone
CAS:
101385-93-7
MF:
C9H15NO3
Structure:
Chemical Name:
2-Bromopyridine-4-carboxylic acid
CAS:
66572-56-3
MF:
C6H4BrNO2
Structure:
Chemical Name:
2,6-Dichloro-5-fluoronicotinic acid
CAS:
82671-06-5
MF:
C6H2Cl2FNO2
Structure:
Chemical Name:
2-(Hydroxymethyl)pyridine
CAS:
586-98-1
MF:
C6H7NO
Structure:
Chemical Name:
2-Methoxypyridine
CAS:
1628-89-3
MF:
C6H7NO
Structure:
Chemical Name:
6-(Trifluoromethyl)nicotinic acid
CAS:
231291-22-8
MF:
C7H4F3NO2
Structure:
Chemical Name:
4,4'-Dimethyl-2,2'-bipyridyl
CAS:
1134-35-6
MF:
C12H12N2
Structure:
Chemical Name:
5-Chloro-7-azaindole
CAS:
866546-07-8
MF:
C7H5ClN2
Structure:
Chemical Name:
4-Chloronicotinic acid
CAS:
10177-29-4
MF:
C6H4ClNO2
Structure:
Chemical Name:
2-Chloro-3-pyridinecarboxaldehyde
CAS:
36404-88-3
MF:
C6H4ClNO
Structure:
Chemical Name:
3-Bromoisonicotinic acid
CAS:
13959-02-9
MF:
C6H4BrNO2
Structure:
Chemical Name:
2-Chloro-4-pyridinecarboxylic acid
CAS:
6313-54-8
MF:
C6H4ClNO2
Structure:
Chemical Name:
2,5-Dichloroisonicotinic acid
CAS:
88912-26-9
MF:
C6H3Cl2NO2
Structure:
Chemical Name:
Pyridinium chlorochromate
CAS:
26299-14-9
MF:
C5H6ClCrNO3
Structure:
Chemical Name:
2-Fluoronicotinic acid
CAS:
393-55-5
MF:
C6H4FNO2
Structure:
Chemical Name:
6-Bromopicolinic acid
CAS:
21190-87-4
MF:
C6H4BrNO2
Structure:
Chemical Name:
1-Methylpiperidin-4-amine
CAS:
41838-46-4
MF:
C6H14N2
Structure:
Chemical Name:
2-Hydroxy-5-pyridinecarboxylic acid
CAS:
5006-66-6
MF:
C6H5NO3
Structure:
Chemical Name:
2,2'-Bipyridine-4,4'-dicarboxylic acid
CAS:
6813-38-3
MF:
C12H8N2O4
Structure:
Chemical Name:
5,6-Dichloronicotinic acid
CAS:
41667-95-2
MF:
C6H3Cl2NO2
Structure:
Chemical Name:
2-Bromopyridine-5-carbaldehyde
CAS:
149806-06-4
MF:
C6H4BrNO
Structure:
Chemical Name:
5-Fluoronicotinic acid
CAS:
402-66-4
MF:
C6H4FNO2
Structure:
Chemical Name:
2-Chloro-6-methoxypyridine
CAS:
17228-64-7
MF:
C6H6ClNO
Structure:
Chemical Name:
2,5-PYRIDINEDICARBOXYLIC ACID
CAS:
100-26-5
MF:
C7H5NO4
Structure:
Chemical Name:
N-Methyl-4-chloropyridine-2-carboxamide
CAS:
220000-87-3
MF:
C7H7ClN2O
Structure:
Chemical Name:
2,6-Pyridinedimethanol
CAS:
1195-59-1
MF:
C7H9NO2
Structure:
Chemical Name:
Ethyl picolinate
CAS:
2524-52-9
MF:
C8H9NO2
Structure:
Chemical Name:
1,8-Diazabicyclo[5.4.0]undec-7-ene
CAS:
6674-22-2
MF:
C9H16N2
Structure:
Chemical Name:
Methyl 6-aminonicotinate
CAS:
36052-24-1
MF:
C7H8N2O2
Structure:
Chemical Name:
Cyclopenta[b]pyridine
CAS:
533-37-9
MF:
C8H9N
Structure:
Chemical Name:
5-Bromo-7-azaindole
CAS:
183208-35-7
MF:
C7H5BrN2
Structure:
Chemical Name:
3,4-Pyridinedicarboxylic acid
CAS:
490-11-9
MF:
C7H5NO4
Structure:
Chemical Name:
4-Chloropyridine-2-carboxylic acid
CAS:
5470-22-4
MF:
C6H4ClNO2
Structure:
Chemical Name:
5-Hydroxynicotinic acid
CAS:
27828-71-3
MF:
C6H5NO3
Structure:
Chemical Name:
5-Bromo-2-methoxypyridine
CAS:
13472-85-0
MF:
C6H6BrNO
Structure:
Chemical Name:
6-Bromonicotinic acid
CAS:
6311-35-9
MF:
C6H4BrNO2
Structure:
Chemical Name:
2-Picolinic acid
CAS:
98-98-6
MF:
C6H5NO2
Structure:
Chemical Name:
2-Fluoroisonicotinic acid
CAS:
402-65-3
MF:
C6H4FNO2
Structure:
Chemical Name:
5-Pyrimidinylboronic acid
CAS:
109299-78-7
MF:
C4H5BN2O2
Structure:
Chemical Name:
5-Bromopyridine-2-carbaldehyde
CAS:
31181-90-5
MF:
C6H4BrNO
Structure:
Chemical Name:
6-CHLORO-1H-PYRROLO[2,3-B]PYRIDINE
CAS:
55052-27-2
MF:
C7H5ClN2
Structure:
Chemical Name:
4-Methoxypyridine
CAS:
620-08-6
MF:
C6H7NO
Structure:
Chemical Name:
2-Methoxy-5-nitropyridine
CAS:
5446-92-4
MF:
C6H6N2O3
Structure:
Chemical Name:
1-(4-Pyridyl)piperazine
CAS:
1008-91-9
MF:
C9H13N3
Structure:
Chemical Name:
3-Pyridylboronic acid
CAS:
1692-25-7
MF:
C5H6BNO2
Structure:
Chemical Name:
4-N-BOC-Aminopiperidine
CAS:
73874-95-0
MF:
C10H20N2O2
Structure:
Chemical Name:
2-Bromonicotinic acid
CAS:
35905-85-2
MF:
C6H4BrNO2
Structure:
Chemical Name:
ETHYL 2,4-DICHLORO-6-METHYLPYRIDINE-3-CARBOXYLATE
CAS:
86129-63-7
MF:
C9H9Cl2NO2
Structure:
Chemical Name:
5-Bromo-3-nitro-2-pyridinol
CAS:
15862-34-7
MF:
C5H3BrN2O3
Structure:
Chemical Name:
2,3-DIBROMO-5-NITRO PYRIDINE
CAS:
15862-36-9
MF:
C5H2Br2N2O2
Structure:
Chemical Name:
1-Ethyl-6-hydroxy-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitrile
CAS:
28141-13-1
MF:
C9H10N2O2
Structure:
Chemical Name:
Pyridine hydrofluoride
CAS:
32001-55-1
MF:
C5H6FN
Structure:
Chemical Name:
6-(TRIFLUOROMETHYL)PYRIDINE-3-CARBOXALDEHYDE
CAS:
386704-12-7
MF:
C7H4F3NO
Structure:
Chemical Name:
5-Amino-2-methoxypyridine
CAS:
6628-77-9
MF:
C6H8N2O
Structure:
Chemical Name:
2-Chloro-6-iodopyridine
CAS:
258506-66-0
MF:
C5H3ClIN
Structure:
Chemical Name:
2-Fluoro-5-trifluoromethylpyridine
CAS:
69045-82-5
MF:
C6H3F4N
Structure:
Chemical Name:
2-Fluoro-3,5-dichloropyridine
CAS:
823-56-3
MF:
C5H2Cl2FN
Structure:
Chemical Name:
3-Amino-2-pyridinol
CAS:
33630-99-8
MF:
C5H6N2O
Structure:
Chemical Name:
2-Chloro-3-fluoro-5-methylpyridine
CAS:
34552-15-3
MF:
C6H5ClFN
Structure:
Chemical Name:
2-Bromo-5-fluoropyridine
CAS:
41404-58-4
MF:
C5H3BrFN
Structure:
Chemical Name:
2,5-DIBROMO-3-FLUOROPYRIDINE
CAS:
156772-60-0
MF:
C5H2Br2FN
Structure:
Chemical Name:
2,5-Dichloropyridin-3-amine
CAS:
78607-32-6
MF:
C5H4Cl2N2
Structure:
Chemical Name:
2-Fluoropyridine-4-carboxaldehyde
CAS:
131747-69-8
MF:
C6H4FNO
Structure:
Chemical Name:
3-Fluoro-5-methylpyridine
CAS:
407-21-6
MF:
C6H6FN
Structure:
Chemical Name:
3-AMINO-2,6-DIMETHYLPYRIDINE
CAS:
3430-33-9
MF:
C7H10N2
Structure:
Chemical Name:
2-FLUORO-5-HYDROXYPYRIDINE
CAS:
55758-32-2
MF:
C5H4FNO
Structure:
Chemical Name:
Methyl 6-methylnicotinate
CAS:
5470-70-2
MF:
C8H9NO2
Structure:
Chemical Name:
2-Chloro-4-nitropyridine 1-oxide
CAS:
14432-16-7
MF:
C5H3ClN2O3
Structure:
Chemical Name:
2-Bromo-4-nitropyridine 1-oxide
CAS:
52092-43-0
MF:
C5H3BrN2O3
Structure:
Chemical Name:
2-Hydroxynicotinaldehyde
CAS:
36404-89-4
MF:
C6H5NO2
Structure:
Chemical Name:
2-Chloro-4-iodopyridine
CAS:
153034-86-7
MF:
C5H3ClIN
Structure:
Chemical Name:
3-Fluoro-4-nitropyridine
CAS:
13505-01-6
MF:
C5H3FN2O2
Structure:
Chemical Name:
METHYL 2-CHLOROISONICOTINATE
CAS:
58481-11-1
MF:
C7H6ClNO2
Structure:
Chemical Name:
4-Bromo-3-cyanopyridine
CAS:
154237-70-4
MF:
C6H3BrN2
Structure:
Chemical Name:
2-Ethylpyridine
CAS:
100-71-0
MF:
C7H9N
Structure:
Chemical Name:
2-Chloropyridine
CAS:
109-09-1
MF:
C5H4ClN
Structure:
Chemical Name:
4-Dimethylaminopyridine
CAS:
1122-58-3
MF:
C7H10N2
Structure:
Chemical Name:
3-Methyl-4-nitropyridine
CAS:
1678-53-1
MF:
C6H6N2O2
Structure:
Chemical Name:
4-Aminopyridine
CAS:
504-24-5
MF:
C5H6N2
Structure:
Chemical Name:
3,4-Lutidine
CAS:
583-58-4
MF:
C7H9N
Structure:
Chemical Name:
4-Methylpyridin-2-amine
CAS:
695-34-1
MF:
C6H8N2