一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Heterocyclic Compounds

Heterocyclic compounds are a class of compounds that consist of carbon atoms and non-carbon atoms altogether forming a cyclic skeletal structure. These non-carbon atoms are collectively referred to as a heteroatom. The common heteroatoms include nitrogen, oxygen, and sulfur. Lactones, lactams, cyclic ethers that we’ve already learned are heterocyclic compounds. With similar properties of congeneric open-chain compounds, they will be discussed in corresponding chapters. This chapter will mainly discuss heterocyclic compounds with relatively stable ring system and with a certain degree of aromaticity, also known as aromatic heterocyclic compound.

There are many kinds and a large number of heterocyclic compounds widely distributed in nature. Many natural heterocyclic compounds in animals and plants play an important physiological role in the body. For example, heterocyclic structure exists in chlorophyll in plants, hemoglobin in animal blood, alkaloids and glycosides as the active ingredient in herbs, some antibiotics and vitamins, certain composition of amino acids in protein and bases in nucleotide. About half of the existing medicines have heterocyclic structures. Thus, heterocyclic compounds play an important role in organic compounds especially in organic medicines.

The most common and also the most important heterocyclic compounds are that with five-membered or six-membered heterocyclic ring and their fused heterocyclic compounds. Therefore, according to the size of the ring, heterocyclic compounds can be divided into five-membered compounds and six-membered heterocyclic compounds. E.g., furan, thiophene, pyrrole, imidazole, triazole and their fused heterocyclic compounds, indole, benzimidazole and diphenylene-oxide are all five-membered heterocyclic compounds, while pyridine, pyrimidine and their fused heterocyclic compounds, quinoline and quinazoline are all six-membered heterocyclic compounds.

According to the number of hetero atoms, five-membered compounds and six-membered heterocyclic compounds can be divided into one-hetero-atom-containing heterocyclic compounds and two-hetero-atom-containing and several-hetero-atom-containing heterocyclic compounds. E.g., furan, thiophene, pyridine, indole, quinoline, dibenzofuran, etc. are one-hetero-atom-containing heterocyclic compounds; imidazole, pyrimidine, benzimidazole, quinazoline, etc. are two-hetero-atom-containing heterocyclic compounds; purine, comprising more than two hetero atoms, is a several-hetero-atom-containing heterocyclic compound. According to the form of the ring in the molecule, heterocyclic compounds can be divided into single-heterocyclic compounds and fused heterocyclic compounds. E.g., furan, pyridine, pyrimidine, imidazole, etc. are single-heterocyclic compounds and indole, quinoline, dibenzofuran, purines, etc. are fused heterocyclic compounds.

Click on the specific product, view the latest prices of the products, information, serving information
Structure Chemical Name CAS MF
pyridin-2,4,5-d3-3-amine pyridin-2,4,5-d3-3-amine
pyridin-2,3,6-d3-4-ol pyridin-2,3,6-d3-4-ol
2-bromopyrimidine-4,5-d2 2-bromopyrimidine-4,5-d2
pyrimidin-4,6-d2-5-amine pyrimidin-4,6-d2-5-amine
2-bromo-6-(tert-butyl)pyridine-3,4,5-d3 2-bromo-6-(tert-butyl)pyridine-3,4,5-d3
5-bromo-3-iodo-1H-pyrazolo[3,4-c]pyridine-4,7-d2 5-bromo-3-iodo-1H-pyrazolo[3,4-c]pyridine-4,7-d2
3-bromo-1H-pyrazolo[3,4-d]pyrimidine-4,6-d2 3-bromo-1H-pyrazolo[3,4-d]pyrimidine-4,6-d2
4-chloro-2-(methyl-13C-d3)pyrimidine 4-chloro-2-(methyl-13C-d3)pyrimidine 1227959-31-0 C5H5ClN2
4-(methyl-d3)pyrimidin-2,6-d2-5-amine 4-(methyl-d3)pyrimidin-2,6-d2-5-amine
5-fluoropyridin-2(1H)-one-3,4,6-d3 5-fluoropyridin-2(1H)-one-3,4,6-d3
4-bromo-1-(2-(methoxy-d3)ethyl)pyridin-2(1H)-one-3,5,6-d3 4-bromo-1-(2-(methoxy-d3)ethyl)pyridin-2(1H)-one-3,5,6-d3
4-fluoro-3-(methyl-d3)pyridin-5,6-d2-2-amine 4-fluoro-3-(methyl-d3)pyridin-5,6-d2-2-amine
1-(6-bromopyridin-3-yl)piperazine-2,3,5,6-d4 1-(6-bromopyridin-3-yl)piperazine-2,3,5,6-d4
2-(4-(4-amino-2-(methyl-d3)pyrimidin-5-yl-6-d)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)ethan-1-ol 2-(4-(4-amino-2-(methyl-d3)pyrimidin-5-yl-6-d)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)ethan-1-ol
2-chloro-4-(pyridin-3-yl-d4)pyrimidine-5,6-d2 2-chloro-4-(pyridin-3-yl-d4)pyrimidine-5,6-d2
4-(1H-pyrazol-4-yl-3,5-d2)-7H-pyrrolo[2,3-d]pyrimidine-2,5,6-d3 4-(1H-pyrazol-4-yl-3,5-d2)-7H-pyrrolo[2,3-d]pyrimidine-2,5,6-d3
6-fluoro-5-(methoxy-d3)pyridin-2,4-d2-3-ol 6-fluoro-5-(methoxy-d3)pyridin-2,4-d2-3-ol
2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine-6,7,8-d3 2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine-6,7,8-d3
4-(3-bromopyridin-4-yl-2,5,6-d3)morpholine 4-(3-bromopyridin-4-yl-2,5,6-d3)morpholine
3-chloro-6-(methyl-d2)pyridazine-4,5-d2 3-chloro-6-(methyl-d2)pyridazine-4,5-d2
tert-butyl 4-(pyridin-3-yl)piperidine-1-carboxylate-2,2,3,3,4,5,5,6,6-d9 tert-butyl 4-(pyridin-3-yl)piperidine-1-carboxylate-2,2,3,3,4,5,5,6,6-d9
4,6-dibromo-2,8-bis(methyl-d3)pyrido[3,2-g]quinoline-3,5,7,10-d4 4,6-dibromo-2,8-bis(methyl-d3)pyrido[3,2-g]quinoline-3,5,7,10-d4
5-bromo-2-(pyridin-2-yl-d4)thiazole-4-d 5-bromo-2-(pyridin-2-yl-d4)thiazole-4-d
5-bromo-2-(pyridin-4-yl-d4)thiazole-4-d 5-bromo-2-(pyridin-4-yl-d4)thiazole-4-d
3-bromo-5-(tetrahydrofuran-3-yl-d7)pyridine 3-bromo-5-(tetrahydrofuran-3-yl-d7)pyridine
4-(methyl-d3)-5-(trifluoromethyl)pyridin-2(1H)-one-3,6-d2 4-(methyl-d3)-5-(trifluoromethyl)pyridin-2(1H)-one-3,6-d2
5-chloro-3-(methoxy-d3)pyridazine-4,6-d2 5-chloro-3-(methoxy-d3)pyridazine-4,6-d2
5-bromo-3-(methyl-d3)-2-(trifluoromethyl)pyridine-4,6-d2 5-bromo-3-(methyl-d3)-2-(trifluoromethyl)pyridine-4,6-d2
5-chloro-3-methoxypyridazine-4,6-d2 5-chloro-3-methoxypyridazine-4,6-d2
4-(methoxy-d3)pyridin-2(1H)-one-3,5,6-d3 4-(methoxy-d3)pyridin-2(1H)-one-3,5,6-d3
4-bromo-5-(methyl-d3)-2-(trifluoromethyl)pyridine-3,6-d2 4-bromo-5-(methyl-d3)-2-(trifluoromethyl)pyridine-3,6-d2
2-bromo-6-fluoro-4-(methyl-d3)pyridine-3,5-d2 2-bromo-6-fluoro-4-(methyl-d3)pyridine-3,5-d2
2,6-dibromo-4-(methyl-d3)pyridin-3-amine 2,6-dibromo-4-(methyl-d3)pyridin-3-amine
2-(3-bromo-1H-pyrazol-1-yl-4,5-d2)-3-(methyl-d3)pyridine-4,5,6-d3 2-(3-bromo-1H-pyrazol-1-yl-4,5-d2)-3-(methyl-d3)pyridine-4,5,6-d3 2256742-55-7 C9BrD8N3
2-bromo-5-iodopyridine-3,4,6-d3 2-bromo-5-iodopyridine-3,4,6-d3 2241872-59-1 C5BrD3IN
5-bromo-2-(3-bromo-1H-pyrazol-1-yl-4,5-d2)pyrimidine-4,6-d2 5-bromo-2-(3-bromo-1H-pyrazol-1-yl-4,5-d2)pyrimidine-4,6-d2 2256742-74-0 C7Br2D4N4
3-bromo-5-(3-bromo-1H-pyrazol-1-yl-4,5-d2)pyridine-2,4,6-d3 3-bromo-5-(3-bromo-1H-pyrazol-1-yl-4,5-d2)pyridine-2,4,6-d3 2256742-80-8 C8Br2D5N3
3-(3-bromo-1H-pyrazol-1-yl-4,5-d2)pyridazine-4,5,6-d3 3-(3-bromo-1H-pyrazol-1-yl-4,5-d2)pyridazine-4,5,6-d3 2256743-17-4 C7BrD5N4
pyridazin-d3-3-amine pyridazin-d3-3-amine 2241865-18-7 C4H2D3N3
2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)-4-(methyl-d3)pyridine-3,5,6-d3 2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)-4-(methyl-d3)pyridine-3,5,6-d3 2256743-40-3 C9BrD8N3
2-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyrimidin-5,6-d2-4-amine 2-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyrimidin-5,6-d2-4-amine 2256743-53-8 C8H2D7N5
4-chloro-2-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyrimidine 4-chloro-2-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyrimidine 2256743-58-3 C8H2ClD5N4
2-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyrimidin-4-amine 2-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyrimidin-4-amine 2256743-78-7 C7H4BrD2N5
5-bromo-2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyrimidine 5-bromo-2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyrimidine 2256744-05-3 C7H2Br2D2N4
6-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridazin-3-amine 6-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridazin-3-amine 2256744-10-0 C7H4BrD2N5
3-(4-bromo-1H-pyrazol-1-yl-3,5-d2)-6-(methyl-d3)pyridazine-4,5-d2 3-(4-bromo-1H-pyrazol-1-yl-3,5-d2)-6-(methyl-d3)pyridazine-4,5-d2 2256744-26-8 C8BrD7N4
2-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4-amine 2-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4-amine 2256744-50-8 C9H5D5N4
2-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4,5,6-d3-3-amine 2-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4,5,6-d3-3-amine 2256744-66-6 C9H2D8N4
6-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridin-2-amine 6-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridin-2-amine 2256744-72-4 C9H5D5N4
3-bromo-5-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridine 3-bromo-5-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridine 2256744-87-1 C9H3BrD5N3
4-bromo-3-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridine-2,5,6-d3 4-bromo-3-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridine-2,5,6-d3 2256744-92-8 C9BrD8N3
4-bromo-3-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine-2,5,6-d3 4-bromo-3-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine-2,5,6-d3 2256745-07-8 C8Br2D5N3
5-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-3,4,6-d3-2-amine 5-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-3,4,6-d3-2-amine 2256745-13-6 C8H2BrD5N4
3-bromo-2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine 3-bromo-2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine 2256745-28-3 C8H3Br2D2N3
6-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-2,4,5-d3-3-amine 6-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-2,4,5-d3-3-amine 2256745-33-0 C8H2BrD5N4
4-bromo-3-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridine 4-bromo-3-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridine 2256745-49-8 C8H3Br2D2N3
5-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-2-amine 5-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-2-amine 2256745-54-5 C8H5BrD2N4
2-bromo-5-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridine 2-bromo-5-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridine 2256745-69-2 C9H3BrD5N3
3-bromo-5-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridine-2,4,6-d3 3-bromo-5-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridine-2,4,6-d3 2256745-75-0 C9BrD8N3
6-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-2,4,5-d3-3-amine 6-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-2,4,5-d3-3-amine 2256745-90-9 C8H2BrD5N4
6-(1H-imidazol-1-yl-d3)pyridazin-3-amine 6-(1H-imidazol-1-yl-d3)pyridazin-3-amine 2256746-96-8 C7H4D3N5
5-bromo-2-(1H-imidazol-1-yl-d3)pyrimidine-4,6-d2 5-bromo-2-(1H-imidazol-1-yl-d3)pyrimidine-4,6-d2 2256747-01-8 C7BrD5N4
4-(1H-pyrazol-1-yl-d3)pyrimidin-5,6-d2-2-amine 4-(1H-pyrazol-1-yl-d3)pyrimidin-5,6-d2-2-amine 2256747-20-1 C7H2D5N5
2-(cyclohexyloxy)-4-fluoropyridine 2-(cyclohexyloxy)-4-fluoropyridine 2256748-00-0 C11H14FNO
6-chloro-4-cyclopentylpyridin-2-amine 6-chloro-4-cyclopentylpyridin-2-amine 1779881-77-4 C10H13ClN2
4-bromo-1-cyclohexyl-5-methoxy-1H-1,2,3-triazole 4-bromo-1-cyclohexyl-5-methoxy-1H-1,2,3-triazole 2363782-34-5 C9H14BrN3O
4-bromo-1-cyclopropyl-5-methoxy-1H-1,2,3-triazole 4-bromo-1-cyclopropyl-5-methoxy-1H-1,2,3-triazole 2363782-06-1 C6H8BrN3O
4-bromo-2-(oxetan-3-yloxy)pyrimidine 4-bromo-2-(oxetan-3-yloxy)pyrimidine 2363781-79-5 C7H7BrN2O2
6-(oxetan-3-yloxy)pyridazin-3-amine 6-(oxetan-3-yloxy)pyridazin-3-amine 1597610-09-7 C7H9N3O2
5,6'-dichloro-2,2'-bipyridine 5,6'-dichloro-2,2'-bipyridine 2227344-95-6 C10H6Cl2N2
tert-butyl 4-(5-bromo-4-methylpyrimidin-2-yl)piperazine-1-carboxylate tert-butyl 4-(5-bromo-4-methylpyrimidin-2-yl)piperazine-1-carboxylate 2460491-62-5 C14H21BrN4O2
1-(5-bromo-4-methylpyrimidin-2-yl)piperidin-3-ol 1-(5-bromo-4-methylpyrimidin-2-yl)piperidin-3-ol 1936347-44-2 C10H14BrN3O
5-bromo-2-(cyclohexyloxy)-4-methylpyrimidine 5-bromo-2-(cyclohexyloxy)-4-methylpyrimidine 1935269-95-6
1-(pyrimidin-2-yl)-1H-imidazol-2-amine 1-(pyrimidin-2-yl)-1H-imidazol-2-amine 2274020-20-9 C7H7N5
5-bromo-N-cyclobutylthiazol-2-amine 5-bromo-N-cyclobutylthiazol-2-amine 1849208-07-6 C7H9BrN2S
2-isobutyl-6-(trifluoromethyl)pyridin-4-amine 2-isobutyl-6-(trifluoromethyl)pyridin-4-amine 2460494-03-3 C10H13F3N2
4-bromo-2-(difluoromethyl)-6-ethylpyridine 4-bromo-2-(difluoromethyl)-6-ethylpyridine 2460489-90-9 C8H8BrF2N
4-bromo-2-cyclohexyl-6-methylpyridine 4-bromo-2-cyclohexyl-6-methylpyridine 2460494-28-2 C12H16BrN
4-cyclopropyl-6-methylpyridin-2(1H)-one 4-cyclopropyl-6-methylpyridin-2(1H)-one 2460501-22-6 C9H11NO
6-bromo-5-isopropylpyridin-3-amine 6-bromo-5-isopropylpyridin-3-amine 2460494-51-1 C8H11BrN2
3-bromo-5-isopropyl-4-methoxypyridine 3-bromo-5-isopropyl-4-methoxypyridine 2460491-36-3 C9H12BrNO
2-(3-bromo-4H-1,2,4-triazol-4-yl)pyrimidine 2-(3-bromo-4H-1,2,4-triazol-4-yl)pyrimidine 2460492-41-3 C6H4BrN5
2-(3-bromo-4H-1,2,4-triazol-4-yl)pyridine 2-(3-bromo-4H-1,2,4-triazol-4-yl)pyridine 2460493-51-8 C7H5BrN4
3-bromo-4-(3-chlorophenyl)-4H-1,2,4-triazole 3-bromo-4-(3-chlorophenyl)-4H-1,2,4-triazole 2460494-36-2 C8H5BrClN3
3-bromo-4-(3-(trifluoromethyl)phenyl)-4H-1,2,4-triazole 3-bromo-4-(3-(trifluoromethyl)phenyl)-4H-1,2,4-triazole 2460494-16-8 C9H5BrF3N3
4-(3-methoxyphenyl)-4H-1,2,4-triazol-3-amine 4-(3-methoxyphenyl)-4H-1,2,4-triazol-3-amine 2460500-95-0 C9H10N4O
4-cyclobutyl-4H-1,2,4-triazol-3-amine 4-cyclobutyl-4H-1,2,4-triazol-3-amine 2167339-57-1 C6H10N4
3-bromo-4-isobutyl-5-methyl-4H-1,2,4-triazole 3-bromo-4-isobutyl-5-methyl-4H-1,2,4-triazole 2460494-52-2 C7H12BrN3
3-bromo-4-cyclohexyl-5-methyl-4H-1,2,4-triazole 3-bromo-4-cyclohexyl-5-methyl-4H-1,2,4-triazole 2460494-67-9 C9H14BrN3
3-bromo-5-(3-fluorophenyl)-4H-1,2,4-triazole 3-bromo-5-(3-fluorophenyl)-4H-1,2,4-triazole 1780760-84-0 C8H5BrFN3
4-(5-bromo-4H-1,2,4-triazol-3-yl)pyridine 4-(5-bromo-4H-1,2,4-triazol-3-yl)pyridine 1823886-48-1 C7H5BrN4
5-bromo-4-(4-(trifluoromethyl)phenyl)-1H-1,2,3-triazole 5-bromo-4-(4-(trifluoromethyl)phenyl)-1H-1,2,3-triazole 2090156-09-3 C9H5BrF3N3
5-bromo-4-(furan-2-yl)-1H-1,2,3-triazole 5-bromo-4-(furan-2-yl)-1H-1,2,3-triazole 2460492-23-1 C6H4BrN3O
5-bromo-4-(3-bromophenyl)-1H-1,2,3-triazole 5-bromo-4-(3-bromophenyl)-1H-1,2,3-triazole 2385801-51-2 C8H5Br2N3
4-bromo-5-cyclopropyl-1-isopropyl-1H-1,2,3-triazole 4-bromo-5-cyclopropyl-1-isopropyl-1H-1,2,3-triazole 2460501-14-6 C8H12BrN3
5-(4H-1,2,4-triazol-3-yl)thiazole 5-(4H-1,2,4-triazol-3-yl)thiazole 2460492-57-1 C5H4N4S
3-(tetrahydrofuran-3-yl)-4H-1,2,4-triazole 3-(tetrahydrofuran-3-yl)-4H-1,2,4-triazole 2460492-29-7 C6H9N3O
2-(4-bromo-3-methyl-1H-pyrazol-1-yl)pyrimidine 2-(4-bromo-3-methyl-1H-pyrazol-1-yl)pyrimidine 2460490-31-5 C8H7BrN4
1-(2-bromo-5-iodophenyl)pyrrolidine 1-(2-bromo-5-iodophenyl)pyrrolidine 1698477-32-5 C10H11BrIN
3-bromo-6-cyclobutyl-2-fluoropyridine 3-bromo-6-cyclobutyl-2-fluoropyridine 2600399-60-6 C9H9BrFN
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
平乐县| 贵德县| 唐河县| 汶川县| 罗平县| 岑溪市| 蕉岭县| 崇明县| 道孚县| 太原市| 浦江县| 中宁县| 石楼县| 农安县| 长垣县| 怀化市| 文昌市| 静乐县| 临沭县| 屯门区| 平定县| 安远县| 千阳县| 阜南县| 宁阳县| 翁源县| 九龙县| 大余县| 石台县| 盘山县| 高邑县| 千阳县| 兖州市| 兴业县| 谢通门县| 桃园县| 隆林| 渭源县| 淄博市| 通许县| 石柱|