Pyridine compound Pyran compounds Pyridazine compounds Pyrimidines Piperazine compounds Quinoline compounds Pyrazines Isoquinoline compounds Thiophene compounds
ChemicalBook >   Product Catalog >  Pharmaceutical intermediates >  Heterocyclic compound

Heterocyclic compound

Pyridine compound Pyran compounds Pyridazine compounds Pyrimidines Piperazine compounds Quinoline compounds Pyrazines Isoquinoline compounds Thiophene compounds
More
Less

Heterocyclic compounds are a class of organic compounds with cyclic structure. The ring-constituting atoms in the molecule, in addition to carbon, also include one or more nitrogen, sulfur, oxygen and other atoms. Those containing one ring are called single-heterocyclic compounds, such as furan, thiazole, and pyridine. Those containing two or more rings are called fused heterocyclic compounds such as quinoline and purine. The most common and most stable are five- or six-membered heterocyclic ring. Simple heterocyclic ring is capable of merging with benzene or another heterocyclic ring to form a bicyclic, tricyclic or more complex ring system. Some kinds of heterocyclic rings have features of aromatic compounds, such as being easy to participate into substitution reaction, difficult to have addition reaction and being stable to oxidant. Heterocyclic compounds are widely found in nature, such as nucleic acids, most kinds of vitamins, chlorophyll, heme, most kinds of alkaloids, pigments and so on. A fraction of the heterocyclic compounds have aromatic characteristics, such as plants coumarone, jasmonate and animals civetone. There are many synthetic pesticides that belong to such compounds such as herbicides atrazine, amitrole, CMPT, insecticide fluorine propargite, quinoline parathion, thioquinox and so on. Simple heterocyclic compound is an important raw material of organic chemical industry.

The cyclic compounds with atoms constituting the ring system, in addition to carbon atom, also containing O, S, and N heteroatom are collectively referred to as heterocyclic compounds. According to this definition, the cyclic dicarboxylic anhydride, the cyclic imide, lactones, lactides, cyclic anhydrides, lactams, and cyclic ethers, strictly speaking, also belong to heterocyclic compounds. However, due to the nature of these compounds are similar with aliphatic compound, and can easily undergo either the cyclization of the open-chain compounds or ring open reaction to be transformed into chain compounds, thus being generally attributed to the aliphatic chemistry for discussion. Therefore, heterocyclic compounds generally refer specifically to those heterocyclic compounds with relatively stable ring system but different levels of aromatic properties, namely aromatic heterocyclic compound.

The organic heterocyclic compounds belong to a large class in the three large categories of organic compounds, open chain, carbocyclic and heterocyclic organic compounds. It contains various kinds and has a large number accounting for about one-third of all known organic compounds and is also widespread in the biosphere, having close relation with the biological growth, development, reproduction, and genetic variation and so on. Common heterocyclic compounds include furan, thiophene, pyrrole, pyridine, quinoline, carbazole and so on.

These kinds of heterocyclic compounds are widely used in organic synthesis or as pharmaceuticals, pesticides, solvents and so on. They are colorless liquids with special smell or crystallization and have specific gravity being less than or close to water. They are toxic and can be soluble in some organic solvents and slightly soluble in water. In case of fire, heat, oxidants and strong acids, it can cause fire or explosion with simultaneous deposition of toxic sulfur dioxide or nitrogen oxide gas. Furan, when being exposed to the air, is capable of forming peroxides with causing an explosion during distillation. In the management of dangerous goods, according to the risk grades of fire, explosion, toxicity risk, they were classified as flammable liquids, flammable solids and organic toxic chemicals; when used in the reservoir, the first two comply danger of the A and B class while the latter one is based on class C fire danger for conducting fire management. In case of fire, we can use foam, dry powder, water mist, 1211 and carbon dioxide for fire extinguishing agents.

Click on the specific product, view the latest prices of the products, information, serving information

Structure:
Chemical Name:
1-(2-CHLORO-3-PYRIDYL)-2,5-DIHYDRO-1H-PYRROLE-2,5-DIONE
CAS:
278610-39-2
MF:
C9H5ClN2O2
Structure:
Chemical Name:
(4-METHYL-2-PHENYL-5-PYRIMIDINYL)METHANOL
CAS:
342405-27-0
MF:
C12H12N2O
Structure:
Chemical Name:
5-BROMO-2-(PYRROLIDIN-1-YL)PYRIMIDINE
CAS:
446286-61-9
MF:
C8H10BrN3
Structure:
Chemical Name:
2-CHLOROPYRIDO[2,3-D]PYRIMIDINE-4(1H)-THIONE
CAS:
91996-76-8
MF:
C7H4ClN3S
Structure:
Chemical Name:
2-FLUORO-3-METHYL-PYRIDINE-5-CARBOXYLIC ACID
CAS:
885267-35-6
MF:
C7H6FNO2
Structure:
Chemical Name:
4-ETHYL-2-METHYLPYRIDINE
CAS:
536-88-9
MF:
C8H11N
Structure:
Chemical Name:
IMIDAZO[1,2-A]PYRIDINE-6-CARBONITRILE
CAS:
106850-34-4
MF:
C8H5N3
Structure:
Chemical Name:
6,6'-DITHIODINICOTINIC ACID
CAS:
15658-35-2
MF:
C12H8N2O4S2
Structure:
Chemical Name:
4,6-DIHYDROXY-2-METHYL-PYRIMIDINE-5-CARBALDEHYDE
MF:
C6H6N2O3
Structure:
Chemical Name:
3-TRIFLUOROMETHYL-2-FORMYLPYRIDINE
CAS:
131747-62-1
MF:
C7H4F3NO
Structure:
Chemical Name:
4-CHLORO-6-(METHOXYMETHYL)-2-(3-METHYLPHENYL)PYRIMIDINE
CAS:
438249-83-3
MF:
C13H13ClN2O
Structure:
Chemical Name:
2-ACETYLAMINO-ISONICOTINIC ACID
CAS:
54221-95-3
MF:
C8H8N2O3
Structure:
Chemical Name:
2,5-DIMETHYL-3-THIOPHENESULFONYL CHLORIDE
CAS:
97272-04-3
MF:
C6H7ClO2S2
Structure:
Chemical Name:
2-BENZYL-OCTAHYDRO-PYRROLO[3,4-C]PYRIDINE
CAS:
351370-98-4
MF:
C14H20N2
Structure:
Chemical Name:
5-FLUOROURACIL, [2-14C]
CAS:
766-63-2
MF:
C4H3FN2O2
Structure:
Chemical Name:
5-PYRIDIN-2-YLTHIOPHENE-2-CARBALDEHYDE
CAS:
132706-12-8
MF:
C10H7NOS
Structure:
Chemical Name:
BENZYL 2-OXO-1,2-DIHYDROPYRIDIN-3-YLCARBAMATE
CAS:
147269-67-8
MF:
C13H12N2O3
Structure:
Chemical Name:
8-HYDROXYQUINOLINE-2-SULFONIC ACID MONOHYDRATE
CAS:
20946-17-2
MF:
C9H7NO4S
Structure:
Chemical Name:
2-AMINO-3-CHLOROPYRAZINE
CAS:
6663-73-6
MF:
C4H4ClN3
Structure:
Chemical Name:
4-HYDROXYPYRIDINE
CAS:
426-64-2
MF:
C18H20F14O4
Structure:
Chemical Name:
3-PYRIDAZINAMINE, 6-(1-METHYLETHYL)-
CAS:
570416-37-4
MF:
C7H11N3
Structure:
Chemical Name:
4-BENZYLOXY-2-CHLOROPYRIMIDINE-5-BORONIC ACID PINACOL ESTER
CAS:
1073354-22-9
MF:
C17H20BClN2O3
Structure:
Chemical Name:
PIPERIDINE-4-CARBOXYLIC ACID (6-METHYL-PYRIDIN-2-YL)-AMIDE
CAS:
110105-99-2
MF:
C12H17N3O
Structure:
Chemical Name:
6-FLUOROURACIL
CAS:
591-36-6
MF:
C4H3FN2O2
Structure:
Chemical Name:
TETRAETHYLAMMONIUM FLUORIDE DIHYDRATE
CAS:
63123-01-3
MF:
C8H24FNO2
Structure:
Chemical Name:
2-ACETYL-5-CYANOTHIOPHENE
CAS:
88653-55-8
MF:
C7H5NOS
Structure:
Chemical Name:
METHYL 5,6-DICHLORONICOTINATE
CAS:
56055-54-0
MF:
C7H5Cl2NO2
Structure:
Chemical Name:
2-BENZYLAMINO-4-METHYLPYRIDINE
CAS:
58088-62-3
MF:
C13H14N2
Structure:
Chemical Name:
4-Chloro-2-pyridinemethanamine
CAS:
180748-30-5
MF:
C6H7ClN2
Structure:
Chemical Name:
5-(1-Methylethyl)-2-pyridinamine
CAS:
603310-75-4
MF:
C8H12N2
Structure:
Chemical Name:
5-CARBOXYCYTOSINE
CAS:
3650-93-9
MF:
C5H5N3O3
Structure:
Chemical Name:
3-BOCAMINO-4-BROMOPYRIDINE
CAS:
885275-14-9
MF:
C10H13BrN2O2
Structure:
Chemical Name:
4-(4-CHLOROBENZOYL)PYRIDINE
CAS:
14548-48-2
MF:
C12H8ClNO
Structure:
Chemical Name:
2,3-DICYANO-5-METHYLPYRAZINE
CAS:
52197-12-3
MF:
C7H4N4
Structure:
Chemical Name:
2-METHYL-5-(PROPYLSULFONYL)PYRIMIDIN-4-AMINE
CAS:
175202-09-2
MF:
C8H13N3O2S
Structure:
Chemical Name:
2-AMINO-6-METHYLPYRIDINE-3,5-DICARBONITRILE
CAS:
78473-11-7
MF:
C8H6N4
Structure:
Chemical Name:
6-CYANO-IMIDAZO[1,2-A]PYRIDINE-2-CARBOXYLIC ACID ETHYL ESTER
CAS:
214958-33-5
MF:
C11H9N3O2
Structure:
Chemical Name:
2-AMINO-3-CYANO-4,6-DIMETHYLPYRIDINE
CAS:
5468-34-8
MF:
C8H9N3
Structure:
Chemical Name:
3-(PYRIMIDIN-2-YLTHIO)PENTANE-2,4-DIONE
CAS:
175277-25-5
MF:
C9H10N2O2S
Structure:
Chemical Name:
4-BROMOPYRIDINE
MF:
C5H4BrN
Structure:
Chemical Name:
2-CHLORO-4-(N,N-DIMETHYLAMINO)PYRIMIDINE
CAS:
31058-81-8
MF:
C6H8ClN3
Structure:
Chemical Name:
2-MERCAPTO-6-METHYLPYRIDINE 97
CAS:
18368-57-5
MF:
C6H7NS
Structure:
Chemical Name:
6-PHENYL-4-PYRIMIDINECARBOXYLIC ACID
CAS:
28668-32-8
MF:
C11H8N2O2
Structure:
Chemical Name:
2-ACETYL-6-METHOXYPYRIDINE 97
CAS:
21190-93-2
MF:
C8H9NO2
Structure:
Chemical Name:
4-PYRIDYLACETIC ACID HYDROCHLORIDE
CAS:
28356-58-3
MF:
C7H7NO2
Structure:
Chemical Name:
5-Isopropyl-3-methyl 2-formyl-1,4-dihydro-6-methyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylate
CAS:
75530-60-8
MF:
C19H20N2O7
Structure:
Chemical Name:
2-[(E)-2-Nitrovinyl]thiophene
CAS:
874-84-0
MF:
C6H5NO2S
Structure:
Chemical Name:
TERT-BUTYL 5-BROMOPYRIDINE-2-CARBOXYLATE 98
CAS:
845306-08-3
MF:
C10H12BrNO2
Structure:
Chemical Name:
3,4-DICYANOTHIOPHENE,
CAS:
18853-32-2
MF:
C6H2N2S
Structure:
Chemical Name:
4-(4-BROMOPHENYL)-2-METHYLPYRIMIDINE, 97
CAS:
499785-50-1
MF:
C11H9BrN2
Structure:
Chemical Name:
3,5-DICHLORO-4-AMINOPYRIDINE
CAS:
228809-78-7
MF:
C5H4Cl2N2
Structure:
Chemical Name:
2-CHLORO-5-METHYLPYRIMIDINE
MF:
C5H5ClN2
Structure:
Chemical Name:
2-MERCAPTOPYRIMIDINE-4,6-DIOL
CAS:
956086-95-6
MF:
C4H4N2O2S
Structure:
Chemical Name:
3-CHLOROCOUMARIN
CAS:
92-45-5
MF:
C9H5ClO2
Structure:
Chemical Name:
Diethyl pyridine-3,5-dicarboxylate
CAS:
4591-56-4
MF:
C11H13NO4
Structure:
Chemical Name:
6-FLUORO-2-METHYLNICOTINIC ACID
CAS:
884494-97-7
MF:
C7H6FNO2
Structure:
Chemical Name:
Methyl 2-Fluoroisonicotinate
CAS:
455-69-6
MF:
C7H6FNO2
Structure:
Chemical Name:
ethyl 4-aminopyrimidine-5-carboxylate
CAS:
65195-35-9
MF:
C7H9N3O2
Structure:
Chemical Name:
Benzo[b]thiophen-3-ylamine
CAS:
17402-82-3
MF:
C8H7NS
Structure:
Chemical Name:
4-Chloro-2-(methylthio)pyrimidine-5-carbonitrile ,97%
CAS:
33089-15-5
MF:
C6H4ClN3S
Structure:
Chemical Name:
2-Aminomethyl-5-bromopyridine
CAS:
173999-23-0
MF:
C6H7BrN2
Structure:
Chemical Name:
TERT-BUTYL CARBAZATE
CAS:
3346-63-2
MF:
C5H6N4O2
Structure:
Chemical Name:
2-(4-PYRIDINYL)-4-PYRIMIDINAMINE
CAS:
61310-29-0
MF:
C9H8N4
Structure:
Chemical Name:
3-METHYLPYRIDINE-2-AMIDOXIME
CAS:
690632-33-8
MF:
C7H9N3O
Structure:
Chemical Name:
6-T-BUTYL-4-CHLOROTHIENO[3,2-D]PYRIMIDINE
CAS:
439693-52-4
MF:
C10H11ClN2S
Structure:
Chemical Name:
4-CHLORO-5-NITROPYRIMIDINE
CAS:
150943-50-3
MF:
C4H2ClN3O2
Structure:
Chemical Name:
ISOQUINOLINE-8-CARBOXYLIC ACID
CAS:
61563-43-7
MF:
C10H7NO2
Structure:
Chemical Name:
2,4-Dimethyl-3-nitropyridine
CAS:
1074-76-6
MF:
C7H8N2O2
Structure:
Chemical Name:
4-CHLORO-3-NITROCOUMARIN
CAS:
38464-20-9
MF:
C9H4ClNO4
Structure:
Chemical Name:
4-AMINO-6-CHLOROPYRIMIDINE-5-CARBONITRILE
CAS:
60025-09-4
MF:
C5H3ClN4
Structure:
Chemical Name:
4H-PYRAZOLO[1,5-A]PYRIMIDIN-7-ONE
CAS:
29274-23-5
MF:
C6H5N3O
Structure:
Chemical Name:
6-METHYL-3-PYRIDAZINECARBOXYLIC ACID
CAS:
64210-60-2
MF:
C6H6N2O2
Structure:
Chemical Name:
THIENO[3,2-D]PYRIMIDIN-4-AMINE
CAS:
16285-74-8
MF:
C6H5N3S
Structure:
Chemical Name:
N,N-DIBOC-4-AMINO-6-CHLOROPYRIMIDINE
CAS:
354112-08-6
MF:
C14H20ClN3O4
Structure:
Chemical Name:
1-METHYL-4-(6-AMINOPYRIDIN-3-YL)PIPERAZINE
CAS:
571189-49-6
MF:
C10H16N4
Structure:
Chemical Name:
ETHYL 3-BROMOPYRIDINE-4-CARBOXYLATE
CAS:
13959-01-8
MF:
C8H8BrNO2
Structure:
Chemical Name:
Isoquinolin-3-ylmethanamine
CAS:
132833-03-5
MF:
C10H10N2
Structure:
Chemical Name:
4-amino-2-chloro-pyrimidine-5-carboxylic acid methyl ester
CAS:
858269-13-3
MF:
C6H6ClN3O2
Structure:
Chemical Name:
(5-Bromopyrimidin-2-yl)acetic acid ethyl ester
CAS:
1134327-91-5
MF:
C8H9BrN2O2
Structure:
Chemical Name:
Ethyl 6-chloro-5-nitro-3-pyridinecarboxylate
CAS:
171876-22-5
MF:
C8H7ClN2O4
Structure:
Chemical Name:
tert-butyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate
CAS:
865245-32-5
MF:
C16H28BNO4
Structure:
Chemical Name:
4-Pyridazinemethanol
CAS:
50901-43-4
MF:
C5H6N2O
Structure:
Chemical Name:
2-Bromo-6-trifluoromethyl-pyridin-3-ylamine
CAS:
117519-16-1
MF:
C6H4BrF3N2
Structure:
Chemical Name:
4-Methylisoquinolin-5-amine
CAS:
194032-18-3
MF:
C10H10N2
Structure:
Chemical Name:
[2-[(tert-Butoxycarbonyl)amino]pyrimidin-5-yl]boronic acid
CAS:
883231-25-2
MF:
C9H14BN3O4
Structure:
Chemical Name:
4-Chloro-2-cyano-6-methylpyrimidine
CAS:
104711-65-1
MF:
C7H5ClN2
Structure:
Chemical Name:
4-bromo-3,5-difluoropyridine
CAS:
1092352-40-3
MF:
C5H2BrF2N
Structure:
Chemical Name:
2,5-Difluoro-4-iodopyridine
CAS:
1017793-20-2
MF:
C5H2F2IN
Structure:
Chemical Name:
2-(5-Aminopyridin-2-yl)-2-methylpropanenitrile
CAS:
1226776-95-9
MF:
C9H11N3
Structure:
Chemical Name:
4-amino-2-chloro-5-fluoropyridine
CAS:
89510-90-7
MF:
C5H4ClFN2
Structure:
Chemical Name:
4,6-DibroMo-Dibenzothiophene
CAS:
669773-34-6
MF:
C12H6Br2S
Structure:
Chemical Name:
DIMETHYL 4-(4-METHOXYPHENYL)-2,6-DIMETHYL-1,4-DIHYDROPYRIDINE-3,5-DICARBOXYLATE
CAS:
73257-47-3
MF:
C18H21NO5
Structure:
Chemical Name:
4-(4-(DIHEXADECYLAMINO)STYRYL)-N-METHYLPYRIDINIUM IODIDE
CAS:
114041-00-8
MF:
C46H79IN2
Structure:
Chemical Name:
PYRIDINE-2,3-DICARBONITRILE
CAS:
17132-78-4
MF:
C7H3N3
Structure:
Chemical Name:
2-CHLORO-3,5-DIIODOPYRIDINE
CAS:
856169-60-3
MF:
C5H2ClI2N
Structure:
Chemical Name:
[5-(METHOXYCARBONYL)PYRIDIN-3-YL]BORONIC ACID
CAS:
871329-53-2
MF:
C7H8BNO4
Structure:
Chemical Name:
4-BROMO-2,6-DIAMINOPYRIDINE
MF:
C5H6BrN3
Structure:
Chemical Name:
2-(4-CHLORO-2-METHYLPHENOXY)-3-NITROPYRIDINE
CAS:
465514-31-2
MF:
C12H9ClN2O3
Structure:
Chemical Name:
4-METHYL-2-PHENYL-5-PYRIMIDINECARBOXYLIC ACID
CAS:
103249-79-2
MF:
C12H10N2O2
Structure:
Chemical Name:
1-(6-CHLOROPYRIMIDIN-4-YL)-4-PIPERIDINOL
CAS:
914347-85-6
MF:
C9H12ClN3O