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:
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:
ETHYL 2,4-DICHLORO-6-METHYLPYRIDINE-3-CARBOXYLATE
CAS:
86129-63-7
MF:
C9H9Cl2NO2
Structure:
Chemical Name:
3-CHLORO-4-IODOPYRIDINE
CAS:
77332-79-7
MF:
C5H3ClIN
Structure:
Chemical Name:
2,5-Diaminopyridine dihydrochloride
CAS:
26878-35-3
MF:
C5H9Cl2N3
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-Bromo-4-nitropyridine
CAS:
6945-67-1
MF:
C5H3BrN2O2
Structure:
Chemical Name:
2-Chloro-4-methyl-3-nitropyridine
CAS:
23056-39-5
MF:
C6H5ClN2O2
Structure:
Chemical Name:
2,6-DIMETHOXY-3-NITROPYRIDINE
CAS:
18677-41-3
MF:
C7H8N2O4
Structure:
Chemical Name:
3-AMINO-PYRIDINE-4-CARBALDEHYDE
CAS:
55279-29-3
MF:
C6H6N2O
Structure:
Chemical Name:
2-Fluoro-3-trifluoromethylpyridine
CAS:
65753-52-8
MF:
C6H3F4N
Structure:
Chemical Name:
2-Chloro-5-methyl-3-nitropyridine
CAS:
23056-40-8
MF:
C6H5ClN2O2
Structure:
Chemical Name:
2-Hydroxy-5-trifluoromethylpyridine
CAS:
33252-63-0
MF:
C6H4F3NO
Structure:
Chemical Name:
2-Bromopyridine N-oxide hydrochloride
CAS:
80866-91-7
MF:
C5H5BrClNO
Structure:
Chemical Name:
2-AMINO-3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE
CAS:
72600-65-8
MF:
C6H4F4N2
Structure:
Chemical Name:
3-CHLORO-5-NITROPYRIDINE
CAS:
22353-33-9
MF:
C5H3ClN2O2
Structure:
Chemical Name:
3-Amino-4-methylpyridine
CAS:
3430-27-1
MF:
C6H8N2
Structure:
Chemical Name:
2-Chloro-3-iodopyridine
CAS:
78607-36-0
MF:
C5H3ClIN
Structure:
Chemical Name:
5-Bromo-6-chloropyridine-3-sulfonyl chloride
CAS:
216394-05-7
MF:
C5H2BrCl2NO2S
Structure:
Chemical Name:
3-Chloropyridine-2-carboxylic acid
CAS:
57266-69-0
MF:
C6H4ClNO2
Structure:
Chemical Name:
2-Hydroxy-3-trifluoromethylpyridine
CAS:
22245-83-6
MF:
C6H4F3NO
Structure:
Chemical Name:
5-Bromonicotinonitrile
CAS:
35590-37-5
MF:
C6H3BrN2
Structure:
Chemical Name:
4-BROMO-PYRIDINE-2-CARBOXYLIC ACID METHYL ESTER
CAS:
29681-42-3
MF:
C7H6BrNO2
Structure:
Chemical Name:
4-Phenylpiperidine
CAS:
771-99-3
MF:
C11H15N
Structure:
Chemical Name:
5-AMINO-2-IODOPYRIDINE
CAS:
29958-12-1
MF:
C5H5IN2
Structure:
Chemical Name:
3-Methyl-4-nitropyridine N-Oxide
CAS:
1074-98-2
MF:
C6H6N2O3
Structure:
Chemical Name:
2-Chloro-3-nitropyridine
CAS:
5470-18-8
MF:
C5H3ClN2O2
Structure:
Chemical Name:
2-METHOXY-3-NITRO-6-PICOLINE
CAS:
112163-03-8
MF:
C7H8N2O3
Structure:
Chemical Name:
2,3-Dihydroxypyridine
CAS:
16867-04-2
MF:
C5H5NO2
Structure:
Chemical Name:
2-Cyanopyridine
CAS:
100-70-9
MF:
C6H4N2
Structure:
Chemical Name:
2,6-Dihydroxy-5-fluoro-3-cyanopyridine
CAS:
113237-18-6
MF:
C6H3FN2O2
Structure:
Chemical Name:
2,6-Dichloro-4-(trifluoromethyl)nicotinonitrile
CAS:
13600-42-5
MF:
C7HCl2F3N2
Structure:
Chemical Name:
2-(Methylamino)pyridine
CAS:
4597-87-9
MF:
C6H8N2
Structure:
Chemical Name:
4-(Trifluoromethyl)pyridin-3-amine
CAS:
175204-80-5
MF:
C6H5F3N2
Structure:
Chemical Name:
2-HYDROXY-3-METHYL-5-NITROPYRIDINE
CAS:
21901-34-8
MF:
C6H6N2O3
Structure:
Chemical Name:
2,3-Dimethylpyridine-N-oxide
CAS:
22710-07-2
MF:
C7H9NO
Structure:
Chemical Name:
2-Bromo-5-chloropyridine
CAS:
40473-01-6
MF:
C5H3BrClN
Structure:
Chemical Name:
2-Pyridylacetonitrile
CAS:
2739-97-1
MF:
C7H6N2
Structure:
Chemical Name:
5-Chloro-6-hydroxy-3-pyridinecarboxylic acid
CAS:
54127-63-8
MF:
C6H4ClNO3
Structure:
Chemical Name:
2-AMINO-3,5-DICHLORO-6-METHYLPYRIDINE
CAS:
22137-52-6
MF:
C6H6Cl2N2
Structure:
Chemical Name:
2-FLUORO-3-NITRO-4-PICOLINE
CAS:
19346-43-1
MF:
C6H5FN2O2
Structure:
Chemical Name:
5-Chloro-3-pyridinol
CAS:
74115-12-1
MF:
C5H4ClNO
Structure:
Chemical Name:
2,3-DIBROMO-5-METHYLPYRIDINE
CAS:
29232-39-1
MF:
C6H5Br2N
Structure:
Chemical Name:
4-Bromo-2-methylpyridine
CAS:
22282-99-1
MF:
C6H6BrN
Structure:
Chemical Name:
5-Methyl-2-pyridineboronic acid
CAS:
372963-49-0
MF:
C6H8BNO2
Structure:
Chemical Name:
6-METHYLPYRIDINE-2-BORONIC ACID
CAS:
372963-50-3
MF:
C6H8BNO2
Structure:
Chemical Name:
3-AMINO-2-BROMO-6-PICOLINE
CAS:
126325-53-9
MF:
C6H7BrN2
Structure:
Chemical Name:
2-Chloronicotinamide
CAS:
10366-35-5
MF:
C6H5ClN2O
Structure:
Chemical Name:
2,3,6-TRIFLUOROPYRIDINE
CAS:
3512-18-3
MF:
C5H2F3N
Structure:
Chemical Name:
2,6-Dichloro-4-methylnicotinonitrile
CAS:
875-35-4
MF:
C7H4Cl2N2
Structure:
Chemical Name:
4-(2-Aminoethyl)pyridine
CAS:
13258-63-4
MF:
C7H10N2
Structure:
Chemical Name:
2-FLUORO-5-NITRO-3-PICOLINE
CAS:
19346-46-4
MF:
C6H5FN2O2
Structure:
Chemical Name:
2-Amino-4-chloro-3-nitropyridine
CAS:
6980-08-1
MF:
C5H4ClN3O2
Structure:
Chemical Name:
2-Hydroxy-3-methoxypyridine
CAS:
20928-63-6
MF:
C6H7NO2
Structure:
Chemical Name:
2-Bromo-3-hydroxypyridine
CAS:
6602-32-0
MF:
C5H4BrNO
Structure:
Chemical Name:
3-Bromo-4-cyanopyridine
CAS:
13958-98-0
MF:
C6H3BrN2
Structure:
Chemical Name:
3-CYANO-2,6-DIHYDROXY-4-(TRIFLUOROMETHYL)PYRIDINE
CAS:
3335-46-4
MF:
C7H3F3N2O2
Structure:
Chemical Name:
2-FLUORO-5-NITRO-6-PICOLINE
CAS:
18605-16-8
MF:
C6H5FN2O2
Structure:
Chemical Name:
2-Amino-5-fluoropyridine
CAS:
21717-96-4
MF:
C5H5FN2
Structure:
Chemical Name:
4-Hydroxypyridine-3-sulfonic acid
CAS:
51498-37-4
MF:
C5H5NO4S
Structure:
Chemical Name:
5-Fluoro-2-methylpyridine
CAS:
31181-53-0
MF:
C6H6FN
Structure:
Chemical Name:
5-Chloropyridine-2-carboxylic acid
CAS:
86873-60-1
MF:
C6H4ClNO2
Structure:
Chemical Name:
2,6-DIMETHYL-PYRIDIN-4-YLAMINE
CAS:
3512-80-9
MF:
C7H10N2
Structure:
Chemical Name:
4-Bromo-2,6-dimethylpyridine
CAS:
5093-70-9
MF:
C7H8BrN
Structure:
Chemical Name:
6-CHLORO-5-METHYLPYRIDINE-3-BORONIC ACID
CAS:
1003043-40-0
MF:
C6H7BClNO2
Structure:
Chemical Name:
4-Amino-2-fluoropyridine
CAS:
18614-51-2
MF:
C5H5FN2
Structure:
Chemical Name:
4-Chloro-2,3-dimethylpyridine 1-oxide
CAS:
59886-90-7
MF:
C7H8ClNO
Structure:
Chemical Name:
3-Bromo-5-fluoropyridine
CAS:
407-20-5
MF:
C5H3BrFN
Structure:
Chemical Name:
4-Chloropyridine-3-carboxaldehyde
CAS:
114077-82-6
MF:
C6H4ClNO
Structure:
Chemical Name:
6-CHLORO-2-CYANO-3-NITROPYRIDINE
CAS:
93683-65-9
MF:
C6H2ClN3O2
Structure:
Chemical Name:
2-Chloro-5-hydroxypyridine
CAS:
41288-96-4
MF:
C5H4ClNO
Structure:
Chemical Name:
2-BROMO-ISONICOTINAMIDE
CAS:
29840-73-1
MF:
C6H5BrN2O
Structure:
Chemical Name:
2-CYANO-4-METHYLPYRIDINE
CAS:
1620-76-4
MF:
C7H6N2
Structure:
Chemical Name:
2-(Trifluoromethyl)pyridine
CAS:
368-48-9
MF:
C6H4F3N
Structure:
Chemical Name:
4-Amino-2-picoline
CAS:
18437-58-6
MF:
C6H8N2
Structure:
Chemical Name:
ETHYL 2,4-DIMETHYLPYRIDINE-3-CARBOXYLATE
CAS:
37669-78-6
MF:
C10H13NO2
Structure:
Chemical Name:
4-Ethoxy-3-nitropyridine
CAS:
1796-84-5
MF:
C7H8N2O3
Structure:
Chemical Name:
4-Methyl-3-nitropyridine
CAS:
5832-44-0
MF:
C6H6N2O2
Structure:
Chemical Name:
3-Hydroxypicolinic acid
CAS:
874-24-8
MF:
C6H5NO3
Structure:
Chemical Name:
2-BROMO-3-NITRO-5-METHYL PYRIDINE
CAS:
23056-46-4
MF:
C6H5BrN2O2
Structure:
Chemical Name:
2-METHYL-6-(TRIFLUOROMETHYL)NICOTINIC ACID
CAS:
261635-93-2
MF:
C8H6F3NO2
Structure:
Chemical Name:
4-AMINO-3,5-DIBROMOPYRIDINE
CAS:
84539-34-4
MF:
C5H4Br2N2
Structure:
Chemical Name:
4-Amino-2-trifluoromethylpyridine
CAS:
147149-98-2
MF:
C6H5F3N2
Structure:
Chemical Name:
Dimethyl 2,6-Pyridinedicarboxylate
CAS:
5453-67-8
MF:
C9H9NO4
Structure:
Chemical Name:
2-Bromo-3-chloro-5-(trifluoromethyl)pyridine
CAS:
75806-84-7
MF:
C6H2BrClF3N
Structure:
Chemical Name:
4-Hydroxy-3-nitropyridine
CAS:
15590-90-6
MF:
C5H4N2O3
Structure:
Chemical Name:
2-Bromo-3-methylpyridine
CAS:
3430-17-9
MF:
C6H6BrN
Structure:
Chemical Name:
3-Iodopyridine
CAS:
1120-90-7
MF:
C5H4IN
Structure:
Chemical Name:
2-Methoxy-5-fluoropyridine
CAS:
51173-04-7
MF:
C6H6FNO
Structure:
Chemical Name:
2-Methoxy-6-methylaminopyridine
CAS:
63071-03-4
MF:
C7H9NO
Structure:
Chemical Name:
2-Hydroxy-3-cyanopyridine
CAS:
20577-27-9
MF:
C6H4N2O
Structure:
Chemical Name:
5-Bromo-2-fluoropyridine-3-carboxaldehyde
CAS:
875781-15-0
MF:
C6H3BrFNO
Structure:
Chemical Name:
4-Amino-3-chloropyridine
CAS:
19798-77-7
MF:
C5H5ClN2
Structure:
Chemical Name:
5-HYDROXYPYRIDINE-2-CARBOXYLIC ACID
CAS:
15069-92-8
MF:
C6H5NO3
Structure:
Chemical Name:
4-BROMOPYRIDIN-2-OL
CAS:
36953-37-4
MF:
C5H4BrNO
Structure:
Chemical Name:
3-Iodo-2-methoxypyridine
CAS:
112197-15-6
MF:
C6H6INO
Structure:
Chemical Name:
3-[2-(3-Chlorophenyl)ethyl]-2-pyridinecarbonitrile
CAS:
31255-57-9
MF:
C14H11ClN2