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
2-Hydroxy-5-(cyclobutyl)pyrimidine 2-Hydroxy-5-(cyclobutyl)pyrimidine 1353853-52-7 C8H10N2O
2-Hydroxy-5-(cyclopentyl)pyrimidine 2-Hydroxy-5-(cyclopentyl)pyrimidine 90253-46-6 C9H12N2O
2-Hydroxy-6-(4-pyridyl)pyrazine 2-Hydroxy-6-(4-pyridyl)pyrazine 1159816-22-4 C9H7N3O
2-methyl-5-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl)pyridine 2-methyl-5-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl)pyridine 2256758-07-1 C14H19BN4O2
3-(1H-pyrazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 3-(1H-pyrazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 2256754-96-6 C14H18BN3O3
3-(2-bromophenyl)-6-chloropyridazine-4,5-d2 3-(2-bromophenyl)-6-chloropyridazine-4,5-d2 2256711-38-1 C10H4BrClD2N2
3-(2-bromophenyl)pyridine-2,4,5,6-d4 3-(2-bromophenyl)pyridine-2,4,5,6-d4 2256711-20-1 C11H8BrN
3-(3-methyl-1H-pyrazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 3-(3-methyl-1H-pyrazol-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 2256754-95-5 C15H20BN3O3
3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl-5-d)pyridine-2,4,5,6-d4 3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl-5-d)pyridine-2,4,5,6-d4 2256710-29-7 C13H12BD5N4O2
3-(4-AMINOPYRIDIN-3-YL)BENZONITRILE 3-(4-AMINOPYRIDIN-3-YL)BENZONITRILE 1258628-33-9 C12H9N3
3-(4-bromophenyl)pyridazine-4,5,6-d3 3-(4-bromophenyl)pyridazine-4,5,6-d3 2256712-40-8 C10H7BrN2
3-(4-CHLOROPYRIDIN-3-YL)BENZONITRILE 3-(4-CHLOROPYRIDIN-3-YL)BENZONITRILE 1563533-08-3 C12H7ClN2
3-(ethoxy-d5)pyridin-4,5,6-d3-2-amine 3-(ethoxy-d5)pyridin-4,5,6-d3-2-amine 2259316-25-9 C7H10N2O
3-(Piperidin-3-yl)pyridazine 3-(Piperidin-3-yl)pyridazine 1505841-65-5 C9H13N3
3-(propyl-d7)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,4,6-d3 3-(propyl-d7)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,4,6-d3 2241875-08-9 C14H12BD10NO2
3,4-Dibromo-2-(3-methylpiperidin-1-yl)pyridine 3,4-Dibromo-2-(3-methylpiperidin-1-yl)pyridine 1381941-58-7 C11H14Br2N2
3,4-Dibromo-2-(4-chlorophenyl)pyridine 3,4-Dibromo-2-(4-chlorophenyl)pyridine 1381934-15-1 C11H6Br2ClN
3,4-Dibromo-2-(iso-propyl)pyridine 3,4-Dibromo-2-(iso-propyl)pyridine 1381935-66-5 C8H9Br2N
3,4-Dibromo-2-(morpholino)pyridine 3,4-Dibromo-2-(morpholino)pyridine 1381941-51-0 C9H10Br2N2O
3,4-Dibromo-6-(3-hydroxypiperidin-1-yl)pyridine 3,4-Dibromo-6-(3-hydroxypiperidin-1-yl)pyridine 1381941-74-7 C10H12Br2N2O
3,4-Dibromo-6-(4-pyridyl)pyridine 3,4-Dibromo-6-(4-pyridyl)pyridine 1381942-03-5 C10H6Br2N2
3,5-Dibromo-2-(piperidin-1-yl)pyridine 3,5-Dibromo-2-(piperidin-1-yl)pyridine 1289111-28-9 C10H12Br2N2
3,5-Dibromo-6-(2-chlorophenyl)pyridine 3,5-Dibromo-6-(2-chlorophenyl)pyridine 1399482-04-2 C11H6Br2ClN
3,5-Dibromo-6-(cyclohexyl)pyridine 3,5-Dibromo-6-(cyclohexyl)pyridine 1399481-37-8 C11H13Br2N
3-AMINO-2-(THIAZOL-4-YL)PYRIDINE 3-AMINO-2-(THIAZOL-4-YL)PYRIDINE 1417518-50-3 C8H7N3S
3-AMINO-4-(1H-PYRROL-1-YL)PYRIDINE 3-AMINO-4-(1H-PYRROL-1-YL)PYRIDINE 1341952-27-9 C9H9N3
3-AMINO-4-(4-METHYLIMIDAZOL-1-YL)PYRIDINE 3-AMINO-4-(4-METHYLIMIDAZOL-1-YL)PYRIDINE 1563535-01-2 C9H10N4
3-AMINO-5-(2-METHYLIMIDAZOL-1-YL)PYRIDINE 3-AMINO-5-(2-METHYLIMIDAZOL-1-YL)PYRIDINE 1314356-86-9 C9H10N4
3-AMINO-5-(CYCLOPENTOXY)PYRIDINE 3-AMINO-5-(CYCLOPENTOXY)PYRIDINE 1563532-64-8 C10H14N2O
3-AMINO-5-(ISO-PROPOXY)PYRIDINE 3-AMINO-5-(ISO-PROPOXY)PYRIDINE 213765-98-1 C8H12N2O
3-Amino-5-bromo-6-(2-tolyl)pyridine 3-Amino-5-bromo-6-(2-tolyl)pyridine 1399482-73-5 C12H11BrN2
3-AMINO-6-(3-FURAN)PYRIDINE 3-AMINO-6-(3-FURAN)PYRIDINE 1159820-95-7 C9H8N2O
3-Bromo-2-(2-thienyl)pyridine 3-Bromo-2-(2-thienyl)pyridine 1417518-31-0 C9H6BrNS
3-Bromo-2-(3-methyl-1H-pyrazol-1-yl)pyridine 3-Bromo-2-(3-methyl-1H-pyrazol-1-yl)pyridine 1247655-80-6 C9H8BrN3
3-Bromo-2-(3-tolyl)pyridine 3-Bromo-2-(3-tolyl)pyridine 1417519-03-9 C12H10BrN
3-BROMO-2-(PYRIDIN-2-YL)PYRIDIN-4-AMINE 3-BROMO-2-(PYRIDIN-2-YL)PYRIDIN-4-AMINE 1381942-82-0 C10H8BrN3
3-BROMO-2-PROPYLPYRIDIN-4-AMINE 3-BROMO-2-PROPYLPYRIDIN-4-AMINE 1381941-53-2 C8H11BrN2
3-Bromo-4-(2-pyridyl)pyridine 3-Bromo-4-(2-pyridyl)pyridine 1356406-43-3 C10H7BrN2
3-Bromo-4-(3,4-difluorophenyl)pyridine 3-Bromo-4-(3,4-difluorophenyl)pyridine 1374665-93-6 C11H6BrF2N
3-Bromo-4-(4-cyanophenyl)pyridine 3-Bromo-4-(4-cyanophenyl)pyridine 144397-73-9 C12H7BrN2
3-BROMO-4-(4-METHYLPIPERIDIN-1-YL)PYRIDINE 3-BROMO-4-(4-METHYLPIPERIDIN-1-YL)PYRIDINE 1289088-50-1 C11H15BrN2
3-Bromo-4-(oxan-4-yl)pyridine 3-Bromo-4-(oxan-4-yl)pyridine 1563531-02-1 C10H12BrNO
3-Bromo-5-(3-methyl-1H-pyrazol-1-yl)pyridine 3-Bromo-5-(3-methyl-1H-pyrazol-1-yl)pyridine 1289056-94-5 C9H8BrN3
3-Bromo-5-(cyclohexyl)pyridine 3-Bromo-5-(cyclohexyl)pyridine 1209459-48-2 C11H14BrN
3-Bromo-5-(iso-butyl)pyridine 3-Bromo-5-(iso-butyl)pyridine 1434127-13-5 C9H12BrN
3-bromo-5-(tetrahydrofuran-2-yl)pyridine 3-bromo-5-(tetrahydrofuran-2-yl)pyridine 2167739-35-5 C9H10BrNO
3-Bromo-5-(thiazol-5-yl)pyridine 3-Bromo-5-(thiazol-5-yl)pyridine 1354219-23-0 C8H5BrN2S
3-Bromo-6-(4-chlorophenyl)pyridine 3-Bromo-6-(4-chlorophenyl)pyridine 88345-92-0 C11H7BrClN
3-Bromo-6-(cyano-13C,15N)pyridine 3-Bromo-6-(cyano-13C,15N)pyridine 1227959-25-2 C6H3BrN2
3-bromopyridin-2,5,6-d3-4-ol 3-bromopyridin-2,5,6-d3-4-ol 2259315-93-8 C5HBrD3NO
3-Hydroxy-2-(cyclohexyl)pyridine 3-Hydroxy-2-(cyclohexyl)pyridine 856966-51-3 C11H15NO
3-Hydroxy-5-(2-methylimidazol-1-yl)pyridine 3-Hydroxy-5-(2-methylimidazol-1-yl)pyridine 1314356-85-8 C9H9N3O
3-Hydroxy-5-(4-tert-butylphenyl)pyridine 3-Hydroxy-5-(4-tert-butylphenyl)pyridine 1261931-94-5 C15H17NO
3-Trifluoromethyl-5-(thiazol-5-yl)bromobenzene 3-Trifluoromethyl-5-(thiazol-5-yl)bromobenzene 1563533-71-0 C10H5BrF3NS
4-(1H-pyrazol-1-yl-d3)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,5,6-d3 4-(1H-pyrazol-1-yl-d3)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,5,6-d3 2256709-83-6 C14H12BD6N3O2
4-(2-(methyl-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-1-yl-5-d)pyridine-2,3,5,6-d4 4-(2-(methyl-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-1-yl-5-d)pyridine-2,3,5,6-d4 2256710-49-1 C15H20BN3O2
4-(2-bromophenyl)-2-(methyl-d3)pyridine-3,5,6-d3 4-(2-bromophenyl)-2-(methyl-d3)pyridine-3,5,6-d3 2256711-65-4 C12H10BrN
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl)pyrimidine 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl)pyrimidine 2256757-94-3 C12H16BN5O2
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(thiophen-2-yl)-1H-1,2,3-triazole 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(thiophen-2-yl)-1H-1,2,3-triazole 2256756-38-2 C12H16BN3O2S
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine-3,5,6-d3 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine-3,5,6-d3 2241870-32-4 C12H15BF3NO2
4-(4-bromo-2-(methyl-d3)-1H-imidazol-1-yl-5-d)pyridine-2,3,5,6-d4 4-(4-bromo-2-(methyl-d3)-1H-imidazol-1-yl-5-d)pyridine-2,3,5,6-d4 2256710-04-8 C9BrD8N3
4-(4-CHLOROPYRIDIN-3-YL)BENZONITRILE 4-(4-CHLOROPYRIDIN-3-YL)BENZONITRILE 1563531-22-5 C12H7ClN2
4-(6-BROMOPYRIDIN-2-YL)BENZONITRILE 4-(6-BROMOPYRIDIN-2-YL)BENZONITRILE 1456546-61-4 C12H7BrN2
4-(Methoxy-d3)-phenyl-boronic acid 4-(Methoxy-d3)-phenyl-boronic acid 1398503-83-7 C7H6BD3O3
4-(TETRAHYDROPYRAN-3-YL)-PYRIDINE 4-(TETRAHYDROPYRAN-3-YL)-PYRIDINE 1434127-08-8 C10H13NO
4,5-Dibromo-1,2-di(iso-propyl)-1H-imidazole 4,5-Dibromo-1,2-di(iso-propyl)-1H-imidazole 1622838-98-5 C9H14Br2N2
4,5-Dibromo-1-ethyl-2-(iso-propyl)-1H-imidazole 4,5-Dibromo-1-ethyl-2-(iso-propyl)-1H-imidazole 1622843-59-7 C8H12Br2N2
4,5-Dibromo-2-(3-furyl)thiazole 4,5-Dibromo-2-(3-furyl)thiazole 1314353-93-9 C7H3Br2NOS
4,5-Dibromo-2-(3-tetrahydrofuranyl)thiazole 4,5-Dibromo-2-(3-tetrahydrofuranyl)thiazole 1314354-15-8 C7H7Br2NOS
4,5-Dibromo-2-(cyclobutoxy)thiazole 4,5-Dibromo-2-(cyclobutoxy)thiazole 1314354-42-1 C7H7Br2NOS
4,5-Dibromo-2-(cyclohexyloxy)thiazole 4,5-Dibromo-2-(cyclohexyloxy)thiazole 1314357-23-7 C9H11Br2NOS
4,5-Dibromo-2-(n-propoxy)thiazole 4,5-Dibromo-2-(n-propoxy)thiazole 1314357-20-4 C6H7Br2NOS
4,5-Dibromo-6-aminopyrimidine 4,5-Dibromo-6-aminopyrimidine 1434127-90-8 C4H3Br2N3
4,5-Diiodopyrimidine 4,5-Diiodopyrimidine 1417518-09-2 C4H2I2N2
4-Amino-1-(2-fluoro-4-pyridyl)imidazole 4-Amino-1-(2-fluoro-4-pyridyl)imidazole 1353855-26-1 C8H7FN4
4-Amino-1-(2-methoxy-4-pyridyl)imidazole 4-Amino-1-(2-methoxy-4-pyridyl)imidazole 1353855-78-3 C9H10N4O
4-Amino-1-(3-bromo-4-pyridyl)imidazole 4-Amino-1-(3-bromo-4-pyridyl)imidazole 1357580-54-1 C8H7BrN4
4-Amino-1-(3-methoxyphenyl)imidazole 4-Amino-1-(3-methoxyphenyl)imidazole 1353856-77-5 C10H11N3O
4-Amino-1-(6-chloro-3-pyridyl)imidazole 4-Amino-1-(6-chloro-3-pyridyl)imidazole 1353855-41-0 C8H7ClN4
4-Amino-2-(2-fluorophenyl)thiazole 4-Amino-2-(2-fluorophenyl)thiazole 1159815-18-5 C9H7FN2S
4-Amino-2-(2-methoxyphenyl)thiazole 4-Amino-2-(2-methoxyphenyl)thiazole 118937-88-5 C10H10N2OS
4-Amino-2-(3,5-difluorophenyl)pyridine 4-Amino-2-(3,5-difluorophenyl)pyridine 1215071-89-8 C11H8F2N2
4-Amino-2-(3-chlorophenyl)pyrimidine 4-Amino-2-(3-chlorophenyl)pyrimidine 1247655-24-8 C10H8ClN3
4-Amino-2-(4-tolyl)thiazole 4-Amino-2-(4-tolyl)thiazole 123970-60-5 C10H10N2S
4-Amino-2-(oxan-2-yl)thiazole 4-Amino-2-(oxan-2-yl)thiazole 1622835-95-3 C8H12N2OS
4-Amino-2-chloro-3-bromo-5-(2-methoxyphenyl)pyridine 4-Amino-2-chloro-3-bromo-5-(2-methoxyphenyl)pyridine 1563528-95-9 C12H10BrClN2O
4-Amino-2-chloro-3-bromo-5-(3,5-difluorophenyl)pyridine 4-Amino-2-chloro-3-bromo-5-(3,5-difluorophenyl)pyridine 1563532-00-2 C11H6BrClF2N2
4-Amino-2-chloro-3-bromo-5-(4-trifluoromethylphenyl)pyridine 4-Amino-2-chloro-3-bromo-5-(4-trifluoromethylphenyl)pyridine 1563528-70-0 C12H7BrClF3N2
4-Amino-2-chloro-3-bromo-5-(N-Boc-piperidin-4-yl)pyridine 4-Amino-2-chloro-3-bromo-5-(N-Boc-piperidin-4-yl)pyridine 1563534-40-6 C15H21BrClN3O2
4-Amino-2-chloro-3-bromo-5,4'-bipyridine 4-Amino-2-chloro-3-bromo-5,4'-bipyridine 1563534-72-4 C10H7BrClN3
4-Amino-2-methyl-6-(5-pyrimidyl)pyrimidine 4-Amino-2-methyl-6-(5-pyrimidyl)pyrimidine 1061357-99-0 C9H9N5
4-Amino-2-phenyl-6-(3-pyridyl)pyrimidine 4-Amino-2-phenyl-6-(3-pyridyl)pyrimidine 1159819-86-9 C15H12N4
4-AMINO-3-(3-METHYLPIPERIDIN-1-YL)PYRIDINE 4-AMINO-3-(3-METHYLPIPERIDIN-1-YL)PYRIDINE 1563532-84-2 C11H17N3
4-AMINO-3-(4-METHYLIMIDAZOL-1-YL)PYRIDINE 4-AMINO-3-(4-METHYLIMIDAZOL-1-YL)PYRIDINE 1563532-72-8 C9H10N4
4-Amino-3,5-dibromo-2-(1H-pyrazol-1-yl)pyridine 4-Amino-3,5-dibromo-2-(1H-pyrazol-1-yl)pyridine 1563532-02-4 C8H6Br2N4
4-Amino-3,5-dibromo-2-(2-furyl)pyridine 4-Amino-3,5-dibromo-2-(2-furyl)pyridine 1563534-26-8 C9H6Br2N2O
4-Amino-3,5-dibromo-2-(4-chlorophenyl)pyridine 4-Amino-3,5-dibromo-2-(4-chlorophenyl)pyridine 1563532-56-8 C11H7Br2ClN2
4-Amino-3,5-dibromo-2-(cyclopentyl)pyridine 4-Amino-3,5-dibromo-2-(cyclopentyl)pyridine 1563530-70-0 C10H12Br2N2
4-Amino-3,5-dibromo-2-(morpholino)pyridine 4-Amino-3,5-dibromo-2-(morpholino)pyridine 1563531-87-2 C9H11Br2N3O
4-Amino-3,5-dibromo-2-dimethylaminopyridine 4-Amino-3,5-dibromo-2-dimethylaminopyridine 1563534-37-1 C7H9Br2N3
HomePage | Member Companies | Advertising | Contact us | Previous WebSite | MSDS | CAS Index | CAS DataBase
Copyright © 2016 ChemicalBook All rights reserved.
云林县| 通榆县| 五寨县| 阿巴嘎旗| 晋江市| 鄂伦春自治旗| 辽源市| 元江| 湖口县| 阜阳市| 南郑县| 密山市| 江西省| 平乐县| 峨边| 卢龙县| 怀宁县| 乐平市| 平阴县| 鄂温| 兴国县| 泰兴市| 怀来县| 江西省| 南京市| 突泉县| 柳河县| 华阴市| 棋牌| 富宁县| 佛坪县| 高安市| 秦安县| 花莲县| 天门市| 扎兰屯市| 南投县| 日土县| 伊川县| 镇巴县| 手机|