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-Chloro-3-methyl-5-bromopyridine
CAS:
29241-60-9
MF:
C6H5BrClN
Structure:
Chemical Name:
4-Methoxy-2-oxo-1,2-dihydro-pyridine-3-carbonitrile
CAS:
21642-98-8
MF:
C7H6N2O2
Structure:
Chemical Name:
3-BROMO-2-CHLORO-6-PICOLINE
CAS:
185017-72-5
MF:
C6H5BrClN
Structure:
Chemical Name:
6-Methoxynicotinic acid
CAS:
66572-55-2
MF:
C7H7NO3
Structure:
Chemical Name:
5-CHLORO-2-FLUORO-3-NITROPYRIDINE
CAS:
60186-16-5
MF:
C5H2ClFN2O2
Structure:
Chemical Name:
2-Amino-3-bromo-5-chloropyridine
CAS:
26163-03-1
MF:
C5H4BrClN2
Structure:
Chemical Name:
4-Chloro-3-methylpyridine
CAS:
1681-36-3
MF:
C6H6ClN
Structure:
Chemical Name:
2,4,6-Trichloropyridine
CAS:
16063-69-7
MF:
C5H2Cl3N
Structure:
Chemical Name:
4-Fluoropyridine hydrochloride
CAS:
39160-31-1
MF:
C5H5ClFN
Structure:
Chemical Name:
2-Chloro-3-nitro-6-methylpyridine
CAS:
56057-19-3
MF:
C6H5ClN2O2
Structure:
Chemical Name:
2-Chloro-4-picoline
CAS:
3678-62-4
MF:
C6H6ClN
Structure:
Chemical Name:
5-Methylpyridin-3-amine
CAS:
3430-19-1
MF:
C6H8N2
Structure:
Chemical Name:
(2-AMINO-PYRIDIN-4-YL)-METHANOL
CAS:
105250-17-7
MF:
C6H8N2O
Structure:
Chemical Name:
5-Bromo-2-methylpyridine
CAS:
3430-13-5
MF:
C6H6BrN
Structure:
Chemical Name:
2-CYANO-3-HYDROXYPYRIDINE
CAS:
932-35-4
MF:
C6H4N2O
Structure:
Chemical Name:
2-Amino-5-chloro-3-nitropyridine
CAS:
5409-39-2
MF:
C5H4ClN3O2
Structure:
Chemical Name:
2-CHLORO-3,5-DINITROPYRIDINE
CAS:
2578-45-2
MF:
C5H2ClN3O4
Structure:
Chemical Name:
3-(2-Chloroethyl)-2-methylpyrido[1,2-a]pyrimidin-4-one
CAS:
41078-70-0
MF:
C11H11ClN2O
Structure:
Chemical Name:
2-CHLORO-3-FLUORO-4-IODOPYRIDINE
CAS:
148639-07-0
MF:
C5H2ClFIN
Structure:
Chemical Name:
2-CYANO-4-NITROPYRIDINE
CAS:
19235-88-2
MF:
C6H3N3O2
Structure:
Chemical Name:
2-AMINO-6-CHLORO-3-NITROPYRIDINE
CAS:
136901-10-5
MF:
C5H4ClN3O2
Structure:
Chemical Name:
2-Methoxynicotinic acid
CAS:
16498-81-0
MF:
C7H7NO3
Structure:
Chemical Name:
5-BROMO-2-HYDROXY-4-METHYLPYRIDINE
CAS:
164513-38-6
MF:
C6H6BrNO
Structure:
Chemical Name:
2-Fluoro-5-bromo-3-methylpyridine
CAS:
29312-98-9
MF:
C6H5BrFN
Structure:
Chemical Name:
2-FLUORO-3-METHYLPYRIDINE-5-BORONIC ACID
CAS:
904326-92-7
MF:
C6H7BFNO2
Structure:
Chemical Name:
5-Ethylpyridine-2,3-dicarboxylic acid diethyl ester
CAS:
105151-39-1
MF:
C13H17NO4
Structure:
Chemical Name:
5-HYDROXY-2-METHOXYPYRIDINE
CAS:
51834-97-0
MF:
C6H7NO2
Structure:
Chemical Name:
N-Methylpyrrole-2-carboxylic acid
CAS:
6973-60-0
MF:
C6H7NO2
Structure:
Chemical Name:
2-Amino-5-iodopyridine
CAS:
20511-12-0
MF:
C5H5IN2
Structure:
Chemical Name:
2,5-Dibromopyridine
CAS:
624-28-2
MF:
C5H3Br2N
Structure:
Chemical Name:
4-AMINO-3-HYDROXY PYRIDINE
CAS:
52334-53-9
MF:
C5H6N2O
Structure:
Chemical Name:
5-FLUORO-2-HYDROXY-3-NITROPYRIDINE
CAS:
136888-20-5
MF:
C5H3FN2O3
Structure:
Chemical Name:
3-Amino-6-hydroxypyridine
CAS:
33630-94-3
MF:
C5H6N2O
Structure:
Chemical Name:
4-Amino-2-chloro-3-nitropyridine
CAS:
2789-25-5
MF:
C5H4ClN3O2
Structure:
Chemical Name:
2-Chloro-4-hydroxypyridine
CAS:
17368-12-6
MF:
C5H4ClNO
Structure:
Chemical Name:
2-Amino-6-methoxypyridine
CAS:
17920-35-3
MF:
C6H8N2O
Structure:
Chemical Name:
2-Methoxypyridin-3-amine
CAS:
20265-38-7
MF:
C6H8N2O
Structure:
Chemical Name:
2-Chloro-3-methyl-5-nitropyridine
CAS:
22280-56-4
MF:
C6H5ClN2O2
Structure:
Chemical Name:
5-Bromo-3-formylpyridine
CAS:
113118-81-3
MF:
C6H4BrNO
Structure:
Chemical Name:
2-BROMO-4,6-DIMETHYLPYRIDINE
CAS:
4926-26-5
MF:
C7H8BrN
Structure:
Chemical Name:
2-BROMO-3-NITRO-4-PICOLINE
CAS:
23056-45-3
MF:
C6H5BrN2O2
Structure:
Chemical Name:
3-FLUORO-2-HYDROXYPYRIDINE
CAS:
1547-29-1
MF:
C5H4FNO
Structure:
Chemical Name:
3-BROMOPYRIDIN-4-YLBORONIC ACID
CAS:
458532-99-5
MF:
C5H5BBrNO2
Structure:
Chemical Name:
2-Amino-5-bromopyridine
CAS:
1072-97-5
MF:
C5H5BrN2
Structure:
Chemical Name:
2,4-Dihydroxy-3-nitropyridine
CAS:
89282-12-2
MF:
C5H4N2O4
Structure:
Chemical Name:
2,2'-DITHIOBIS(5-NITROPYRIDINE)
CAS:
2127-10-8
MF:
C10H6N4O4S2
Structure:
Chemical Name:
4-Amino-2-ethoxypyridine
CAS:
89943-12-4
MF:
C7H10N2O
Structure:
Chemical Name:
3-Methyl-2-pyridone
CAS:
1003-56-1
MF:
C6H7NO
Structure:
Chemical Name:
3-Bromo-5-methylpyridine
CAS:
3430-16-8
MF:
C6H6BrN
Structure:
Chemical Name:
IMIDAZO[1,2-A]PYRIDINE-8-CARBOXYLIC ACID
CAS:
133427-08-4
MF:
C8H6N2O2
Structure:
Chemical Name:
3-Bromo-5-hydroxypyridine
CAS:
74115-13-2
MF:
C5H4BrNO
Structure:
Chemical Name:
4-Chloro-2-hydroxypyridine
CAS:
40673-25-4
MF:
C5H4ClNO
Structure:
Chemical Name:
2-BROMO-5-NITRO-6-PICOLINE
CAS:
22282-96-8
MF:
C6H5BrN2O2
Structure:
Chemical Name:
2-Chloro-4-methyl-5-nitropyridine
CAS:
23056-33-9
MF:
C6H5ClN2O2
Structure:
Chemical Name:
5-BROMO-2,3-DIHYDRO-1H-PYRROLO[2,3-B]PYRIDINE
CAS:
115170-40-6
MF:
C7H7BrN2
Structure:
Chemical Name:
3,5-BIS(METHYLSULFONYL)ANILINE
CAS:
101990-69-6
MF:
C6H5Cl2NO
Structure:
Chemical Name:
5-Amino-2-methylpyridine
CAS:
3430-14-6
MF:
C6H8N2
Structure:
Chemical Name:
4-Nitropyridine N-oxide
CAS:
1124-33-0
MF:
C5H4N2O3
Structure:
Chemical Name:
3-BROMOPYRIDINE-2-CARBOXYLIC ACID
CAS:
30683-23-9
MF:
C6H4BrNO2
Structure:
Chemical Name:
4-Methylnicotinic acid
CAS:
3222-50-2
MF:
C7H7NO2
Structure:
Chemical Name:
2-Amino-3-bromo-5-nitropyridine
CAS:
15862-31-4
MF:
C5H4BrN3O2
Structure:
Chemical Name:
Imidazo[1,2-a]pyridine
CAS:
274-76-0
MF:
C7H6N2
Structure:
Chemical Name:
2,4-Dihydroxypyridine
CAS:
626-03-9
MF:
C5H5NO2
Structure:
Chemical Name:
4-Nitro-2,3-lutidine-N-oxide
CAS:
37699-43-7
MF:
C7H8N2O3
Structure:
Chemical Name:
3-Bromo-2-pyridinamine
CAS:
13534-99-1
MF:
C5H5BrN2
Structure:
Chemical Name:
3-Amino-5-fluoropyridine
CAS:
210169-05-4
MF:
C5H5FN2
Structure:
Chemical Name:
2-Dimethylaminopyridine
CAS:
5683-33-0
MF:
C7H10N2
Structure:
Chemical Name:
5-BROMO-2-METHYLPYRIDIN-3-AMINE
CAS:
914358-73-9
MF:
C6H7BrN2
Structure:
Chemical Name:
5,6-DIBROMOPYRIDINE-3-CARBOXYLIC ACID
CAS:
29241-64-3
MF:
C6H3Br2NO2
Structure:
Chemical Name:
2-Vinylpyridine
CAS:
100-69-6
MF:
C7H7N
Structure:
Chemical Name:
3-Hydroxypyridine
CAS:
109-00-2
MF:
C5H5NO
Structure:
Chemical Name:
4-Bromo-2,6-diaminopyridine
CAS:
329974-09-6
MF:
C5H6BrN3
Structure:
Chemical Name:
6-Chloro-2,3-diaminopyridine
CAS:
40851-95-4
MF:
C5H6ClN3
Structure:
Chemical Name:
2,3-Dibromo-5-fluoropyridine
CAS:
878207-82-0
MF:
C5H2Br2FN
Structure:
Chemical Name:
4-IODO-2-METHOXYPYRIDINE
CAS:
98197-72-9
MF:
C6H6INO
Structure:
Chemical Name:
2-BROMO-5-CHLORO-3-NITROPYRIDINE
CAS:
75806-86-9
MF:
C5H2BrClN2O2
Structure:
Chemical Name:
2-{[4-(3-Methoxypropoxy)-3-methylpyridine-2-yl]methylthio}-1H-benzimidazole
CAS:
117977-21-6
MF:
C18H21N3O2S
Structure:
Chemical Name:
6-Bromopyridine-2-boronic acid pinacol ester
CAS:
651358-83-7
MF:
C11H15BBrNO2
Structure:
Chemical Name:
2-Bromopyridine N-oxide hydrobromide
CAS:
206860-49-3
MF:
C5H5Br2NO
Structure:
Chemical Name:
2-Cyano-5-nitropyridine
CAS:
100367-55-3
MF:
C6H3N3O2
Structure:
Chemical Name:
4-Iodopyridine
CAS:
15854-87-2
MF:
C5H4IN
Structure:
Chemical Name:
6-AMINO-5-METHYLNICOTINONITRILE
CAS:
183428-91-3
MF:
C7H7N3
Structure:
Chemical Name:
5-IODO-6-METHYL-PYRIDIN-2-YLAMINE
CAS:
75073-11-9
MF:
C6H7IN2
Structure:
Chemical Name:
2,3,5-Trifluoropyridine
CAS:
76469-41-5
MF:
C5H2F3N
Structure:
Chemical Name:
2-AMINO-5-CHLORO-3-PICOLINE
CAS:
20712-16-7
MF:
C6H7ClN2
Structure:
Chemical Name:
2-Aminopyridine-5-boronic acid, pinacol ester
CAS:
827614-64-2
MF:
C11H17BN2O2
Structure:
Chemical Name:
4-NITRO-PYRIDIN-2-YLAMINE
CAS:
4487-50-7
MF:
C5H5N3O2
Structure:
Chemical Name:
5-Bromo-2-methyl-3-nitropyridine
CAS:
911434-05-4
MF:
C6H5BrN2O2
Structure:
Chemical Name:
2-Chloro-6-trifluoromethylnicotinic acid
CAS:
280566-45-2
MF:
C7H3ClF3NO2
Structure:
Chemical Name:
3-CHLOROISONICOTINALDEHYDE
CAS:
72990-37-5
MF:
C6H4ClNO
Structure:
Chemical Name:
5-BROMO-2-HYDROXY-3-PICOLINE
CAS:
89488-30-2
MF:
C6H6BrNO
Structure:
Chemical Name:
2-HYDROXY-4-PYRIDINECARBOXALDEHYDE
CAS:
188554-13-4
MF:
C6H5NO2
Structure:
Chemical Name:
2-Amino-5-bromo-3-nitropyridine
CAS:
6945-68-2
MF:
C5H4BrN3O2
Structure:
Chemical Name:
3-CHLORO-2-METHOXY-5-(TRIFLUOROMETHYL)PYRIDINE
CAS:
175136-17-1
MF:
C7H5ClF3NO
Structure:
Chemical Name:
2-Amino-4-(trifluoromethyl)pyridine
CAS:
106447-97-6
MF:
C6H5F3N2
Structure:
Chemical Name:
2-Amino-4-chloropyridine
CAS:
19798-80-2
MF:
C5H5ClN2
Structure:
Chemical Name:
Clopyralid
CAS:
1702-17-6
MF:
C6H3Cl2NO2
Structure:
Chemical Name:
5-BROMO-2,3-DIFLUOROPYRIDINE
CAS:
89402-44-8
MF:
C5H2BrF2N
Structure:
Chemical Name:
5-Amino-2-chloro-3-picoline
CAS:
38186-82-2
MF:
C6H7ClN2
Structure:
Chemical Name:
2-Bromo-3-chloropyridine
CAS:
96424-68-9
MF:
C5H3BrClN