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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.

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Structure Chemical Name CAS MF
96100-45-7 96100-45-7 96100-45-7 C3H2FN3
N-(ethyl-d5)-N-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine-2,4,6-d3 N-(ethyl-d5)-N-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine-2,4,6-d3 2241875-09-0 C14H23BN2O2
N,N-bis(ethyl-d5)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine-2,4,6-d3 N,N-bis(ethyl-d5)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-amine-2,4,6-d3 2241875-10-3 C15H25BN2O2
tert-butyl 4-(6-(tert-butoxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperidine-1-carboxylate tert-butyl 4-(6-(tert-butoxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)piperidine-1-carboxylate 2256754-75-1 C25H41BN2O5
5-Chloro-7-(trifluoromethyl)imidazo[1,5-a]pyridine 5-Chloro-7-(trifluoromethyl)imidazo[1,5-a]pyridine 2064217-73-6 C8H4ClF3N2
3-Bromo-2-(oxetan-3-yloxy)pyridine 3-Bromo-2-(oxetan-3-yloxy)pyridine 1595571-05-3 C8H8BrNO2
5-Bromo-2-cyclobutoxy-4-methylpyrimidine 5-Bromo-2-cyclobutoxy-4-methylpyrimidine 1935588-15-0 C9H11BrN2O
1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylcyclohexane-1-carboxylic acid 1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylcyclohexane-1-carboxylic acid 1013096-03-1 C23H27NO4S2
5-([1,1'-biphenyl]-4-yl)-5,8-dihydroindolo[2,3-c]carbazole 5-([1,1'-biphenyl]-4-yl)-5,8-dihydroindolo[2,3-c]carbazole 2071630-78-7 C30H20N2
CIS-OCTAHYDRO-2H-BENZIMIDAZOL-2-ONE CIS-OCTAHYDRO-2H-BENZIMIDAZOL-2-ONE 1123-97-3 C7H12N2O
1-METHYL-1,5-DIHYDRO-4H-PYRAZOLO[3,4-D]PYRIMIDIN-4-ONE 1-METHYL-1,5-DIHYDRO-4H-PYRAZOLO[3,4-D]PYRIMIDIN-4-ONE 5334-56-5 C6H6N4O
4,5-Dichloro-1,2,3-dithiazolium chloride 4,5-Dichloro-1,2,3-dithiazolium chloride 75318-43-3 C2Cl3NS2
2-Amino-5-(tetrahydrofuran-2-yl)pyridine 2-Amino-5-(tetrahydrofuran-2-yl)pyridine 710323-11-8 C9H12N2O
2-Chloro-6-(tetrahydrofuran-2-yl)pyridine 2-Chloro-6-(tetrahydrofuran-2-yl)pyridine 1353856-28-6 C9H10ClNO
5-(2-TETRAHYDROPYRANYL)PYRIDINE-2-BORONIC ACID PINACOL ESTER 5-(2-TETRAHYDROPYRANYL)PYRIDINE-2-BORONIC ACID PINACOL ESTER 2223005-71-6 C16H24BNO3
3-(2-methyl-6-methylthiophenyl)-4,5-dihydroisoxazole 3-(2-methyl-6-methylthiophenyl)-4,5-dihydroisoxazole 250592-91-7 C11H13NOS
1-Pentanone, 4-methyl-1-phenyl-2-(1-pyrrolidinyl)- 1-Pentanone, 4-methyl-1-phenyl-2-(1-pyrrolidinyl)- 2181620-71-1 C16H23NO
2-chloro-5-(trifluoromethyl)pyridine-3,4,6-d3 2-chloro-5-(trifluoromethyl)pyridine-3,4,6-d3 2363781-87-5 C6H3ClF3N
9,10-dimethoxy-2-(2,4,6-trimethylanilino)-6,7-dihydropyrimido[6,1-a]isoquinolin-4-one 9,10-dimethoxy-2-(2,4,6-trimethylanilino)-6,7-dihydropyrimido[6,1-a]isoquinolin-4-one 76536-66-8 C23H25N3O3
2-Phenylbenzoxazole 2-Phenylbenzoxazole 833-50-1 C13H9NO
3,4-DIBROMO-2-PIPERIDIN-1-YLPYRIDINE 3,4-DIBROMO-2-PIPERIDIN-1-YLPYRIDINE 887571-41-7 C10H12Br2N2
(3R,4S)-1-(Tert-butoxycarbonyl)-4-phenylpyrrolidine-3-carboxylic acid (3R,4S)-1-(Tert-butoxycarbonyl)-4-phenylpyrrolidine-3-carboxylic acid 956101-09-0 C16H21NO4
6-Bromo-8-chloro-3,3-dimethyl-2,3-dihydroimidazo[1,5-a]pyridine-1,5-dione 6-Bromo-8-chloro-3,3-dimethyl-2,3-dihydroimidazo[1,5-a]pyridine-1,5-dione 1849592-09-1 C9H8BrClN2O2
6-Isopropyl-2-methylimidazo[2,1-b][1,3,4]thiadiazole-5-carboxylic acid 6-Isopropyl-2-methylimidazo[2,1-b][1,3,4]thiadiazole-5-carboxylic acid 1693935-56-6 C9H11N3O2S
Pyrido[2,3-d]pyrimidine-2,4,7(1H,3H,8H)-trione Pyrido[2,3-d]pyrimidine-2,4,7(1H,3H,8H)-trione 258282-54-1 C7H5N3O3
5-chloropyrido[4,3-d]pyrimidine 5-chloropyrido[4,3-d]pyrimidine 1029720-78-2 C7H4ClN3
1,10-Phenanthroline, 2-phenyl- 1,10-Phenanthroline, 2-phenyl- 109559-47-9 C18H12N2
1,10-Phenanthroline, 2-(4-bromo-1-
naphthalenyl)-9-phenyl- 1,10-Phenanthroline, 2-(4-bromo-1- naphthalenyl)-9-phenyl- 2042493-16-1 C18H11BrN2
4,4,5,5-tetramethyl-2-(4-methylfuran-2-yl)-1,3,2-dioxaborolane 4,4,5,5-tetramethyl-2-(4-methylfuran-2-yl)-1,3,2-dioxaborolane 1242517-59-4 C11H17BO3
tert-butyl 3-(5-bromopyrimidin-2-yl)pyrrolidine-1-carboxylate tert-butyl 3-(5-bromopyrimidin-2-yl)pyrrolidine-1-carboxylate 1257522-09-0 C13H18BrN3O2
1H-PYRAZOLE-3-CARBONITRILE, 4-AMINO- 1H-PYRAZOLE-3-CARBONITRILE, 4-AMINO- 68703-67-3 C4H4N4
4-chloro-2,7-dimethylthieno[3,2-d]pyrimidine 4-chloro-2,7-dimethylthieno[3,2-d]pyrimidine 936837-34-2 C8H7ClN2S
2-tert-butyl-5H,6H,7H,8H-imidazo[1,2-a]pyridin-6-amine 2-tert-butyl-5H,6H,7H,8H-imidazo[1,2-a]pyridin-6-amine 1306606-89-2 C11H19N3
1,3-bis((1H-imidazol-1-yl)methyl)benzene 1,3-bis((1H-imidazol-1-yl)methyl)benzene 69506-92-9 C14H14N4
4-Cyano-3,5-dimethylphenylboronic acid pinacol ester 4-Cyano-3,5-dimethylphenylboronic acid pinacol ester 1111096-09-3 C15H20BNO2
2,5-Dibromo-4-(3-pyridyl)thiazole 2,5-Dibromo-4-(3-pyridyl)thiazole 1357580-17-6 C8H4Br2N2S
3-bromo-4-cyclopropyl-5-methyl-4H-1,2,4-triazole 3-bromo-4-cyclopropyl-5-methyl-4H-1,2,4-triazole 1520805-08-6 C6H8BrN3
(2-(2-(methyl-d3)propan-2-yl-1,1,1,3,3,3-d6)pyrimidin-5-yl)boronic acid (2-(2-(methyl-d3)propan-2-yl-1,1,1,3,3,3-d6)pyrimidin-5-yl)boronic acid 2241876-99-1 C8H13BN2O2
(2-(4-(methyl-d3)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)pyridin-4-yl)boronic acid (2-(4-(methyl-d3)piperazin-1-yl-2,2,3,3,5,5,6,6-d8)pyridin-4-yl)boronic acid 2241875-84-1 C10H16BN3O2
(2-(methyl-d3)pyridin-4-yl)boronic acid (2-(methyl-d3)pyridin-4-yl)boronic acid 2241867-20-7 C6H5BD3NO2
(2-(propan-2-yl-d7)pyridin-4-yl)boronic acid (2-(propan-2-yl-d7)pyridin-4-yl)boronic acid 2241875-87-4 C8H5BD7NO2
(2-(thiazol-5-yl)pyrimidin-5-yl)boronic acid (2-(thiazol-5-yl)pyrimidin-5-yl)boronic acid 2225180-55-0 C7H6BN3O2S
(2,5-bis(methyl-d3)pyridin-3-yl)boronic acid (2,5-bis(methyl-d3)pyridin-3-yl)boronic acid 2241876-03-7 C7H10BNO2
(4,5-bis(methyl-d3)pyridin-3-yl)boronic acid (4,5-bis(methyl-d3)pyridin-3-yl)boronic acid 2241876-00-4 C7H10BNO2
6-Amino-4-bromopyridin-2-ol 6-Amino-4-bromopyridin-2-ol 1417441-45-2 C5H5BrN2O
2,4(1H,3H)-Pyrimidinedione, dihydro-1-(4-hydroxyphenyl)- 2,4(1H,3H)-Pyrimidinedione, dihydro-1-(4-hydroxyphenyl)- 83809-75-0 C10H10N2O3
Pyridine, 4-chloro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)- Pyridine, 4-chloro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)- 2223047-09-2 C12H14BClF3NO2
4-Aminofuro[3,2-d]pyrimidine-7-carboxylic acid 4-Aminofuro[3,2-d]pyrimidine-7-carboxylic acid 1206181-18-1 C7H5N3O3
4-Chloro-6-(2,2-difluoropropyl)thieno[2,3-d]pyrimidine 4-Chloro-6-(2,2-difluoropropyl)thieno[2,3-d]pyrimidine 2180956-71-0 C9H7ClF2N2S
2-(Bromomethyl)-6-methyl-2H-oxazolo[3,2-a]pyrimidin-7(3H)-one 2-(Bromomethyl)-6-methyl-2H-oxazolo[3,2-a]pyrimidin-7(3H)-one 315186-62-0 C8H9BrN2O2
(2,5-dioxopyrrolidin-1-yl) but-2-enoate (2,5-dioxopyrrolidin-1-yl) but-2-enoate 53665-20-6 C8H9NO4
1-benzyl-4,5-dibromo-1H-1,2,3-triazole 1-benzyl-4,5-dibromo-1H-1,2,3-triazole 180723-19-7 C9H7Br2N3
(TRANS)-4-(4-CHLORO-PHENYL)-PYRROLIDINE-3-CARBOXYLIC ACID-HCL (TRANS)-4-(4-CHLORO-PHENYL)-PYRROLIDINE-3-CARBOXYLIC ACID-HCL 1807940-40-4 C11H13Cl2NO2
N,N'-BIS-BOC-1-GUANYLPYRAZOLE N,N'-BIS-BOC-1-GUANYLPYRAZOLE 152120-54-2 C14H22N4O4
(5-(ethyl-d5)pyridin-3-yl)boronic acid (5-(ethyl-d5)pyridin-3-yl)boronic acid 2241867-26-3 C7H10BNO2
(5-(thiophen-2-yl)pyridin-3-yl)boronic acid (5-(thiophen-2-yl)pyridin-3-yl)boronic acid 2225180-67-4 C9H8BNO2S
(5-methyl-6-(methyl-d3)pyridin-3-yl)boronic acid (5-methyl-6-(methyl-d3)pyridin-3-yl)boronic acid 2241867-28-5 C7H10BNO2
(6-(methyl-d3)-5-(2-(methyl-d3)propyl-1,1,2,3,3,3-d6)pyridin-3-yl)boronic acid (6-(methyl-d3)-5-(2-(methyl-d3)propyl-1,1,2,3,3,3-d6)pyridin-3-yl)boronic acid 2241876-01-5 C10H16BNO2
[2-(METHOXYCARBONYL)-6-(TERT-BUTOXY)PYRIDIN-4-YL]BORONIC ACID [2-(METHOXYCARBONYL)-6-(TERT-BUTOXY)PYRIDIN-4-YL]BORONIC ACID 2225173-38-4 C11H16BNO5
1-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-4-yl)pyrrolidin-2-one 1-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-4-yl)pyrrolidin-2-one 1352817-38-9 C15H21BN2O3
1-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)phenyl)pyridin-2(1H)-one 1-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)phenyl)pyridin-2(1H)-one 2223032-83-3 C18H19BF3NO3
1-(5-Chloro-2-pyrimidyl)pyrazole-4-boronic acid 1-(5-Chloro-2-pyrimidyl)pyrazole-4-boronic acid 2225169-84-4 C7H6BClN4O2
1-(methyl-d3)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)piperazine-2,2,3,3,5,5,6,6-d8 1-(methyl-d3)-4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)piperazine-2,2,3,3,5,5,6,6-d8 2241875-14-7 C16H15BD11N3O2
1-phenyl-N-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)methanimine 1-phenyl-N-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)methanimine 2223056-51-5 C16H19BN2O2S
2-(1,4-dioxan-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2-(1,4-dioxan-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2223003-45-8 C14H21BN2O4
2-(1,4-dioxan-2-yl)-6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(1,4-dioxan-2-yl)-6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223002-80-8 C16H24BNO4
2-(2-HYDROXYPROPAN-2-YL)PYRIDINE-4-BORONIC ACID 2-(2-HYDROXYPROPAN-2-YL)PYRIDINE-4-BORONIC ACID 2225156-03-4 C8H12BNO3
2-(2-Pyridyl)thiazole-4-boronic acid pinacol ester 2-(2-Pyridyl)thiazole-4-boronic acid pinacol ester 1402165-99-4 C14H17BN2O2S
2-(2-Tolyl)pyridine-3-boronic acid 2-(2-Tolyl)pyridine-3-boronic acid 2225174-33-2 C12H12BNO2
2-(3,4-difluorophenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(3,4-difluorophenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223029-22-7 C17H18BF2NO2
2-(3-cyclopropyl-2-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(3-cyclopropyl-2-fluorophenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2223032-03-7 C15H20BFO2
2-(3-Fluorophenyl)pyridine-3-boronic acid 2-(3-Fluorophenyl)pyridine-3-boronic acid 2225173-43-1 C11H9BFNO2
2-(3-Methoxyphenyl)pyridine-4-boronic acid 2-(3-Methoxyphenyl)pyridine-4-boronic acid 2225177-69-3 C12H12BNO3
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)pyridazin-3(2H)-one 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)pyridazin-3(2H)-one 2096337-68-5 C15H18BN3O3
2-(4-Fluoro-2-methylphenyl)pyridine-4-boronic acid 2-(4-Fluoro-2-methylphenyl)pyridine-4-boronic acid 2225177-23-9 C12H11BFNO2
2-(5-Bromopyridin-2-yl)piperazine 2-(5-Bromopyridin-2-yl)piperazine 1622834-87-0 C9H12BrN3
2-(5-ethylthiophen-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(5-ethylthiophen-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2223032-20-8 C12H19BO2S
2-(Cyclobutyl)-6-(N-Boc-piperidin-3-yl)pyridine-4-boronic acid pinacol ester 2-(Cyclobutyl)-6-(N-Boc-piperidin-3-yl)pyridine-4-boronic acid pinacol ester 2223003-66-3 C25H39BN2O4
2-(Cyclohexeyl)pyridine-5-boronic acid 2-(Cyclohexeyl)pyridine-5-boronic acid 1264514-93-3 C11H14BNO2
2-(Cyclopentyl)pyridine-3-boronic acid pinacol ester 2-(Cyclopentyl)pyridine-3-boronic acid pinacol ester 2223030-36-0 C16H24BNO2
2-(iso-Butyl)-6-(piperidin-3-yl)pyridine-4-boronic acid 2-(iso-Butyl)-6-(piperidin-3-yl)pyridine-4-boronic acid 2225151-75-5 C14H23BN2O2
2-(iso-Butyl)pyridine-3-boronic acid pinacol ester 2-(iso-Butyl)pyridine-3-boronic acid pinacol ester 2223051-84-9 C15H24BNO2
2-(iso-Propyl)-6-cyanopyridine-4-boronic acid 2-(iso-Propyl)-6-cyanopyridine-4-boronic acid 2225175-84-6 C9H11BN2O2
2-(n-Propoxy)pyrimidine-5-boronic acid pinacol ester 2-(n-Propoxy)pyrimidine-5-boronic acid pinacol ester 1415748-21-8 C13H21BN2O3
2-(prop-1-en-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(prop-1-en-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223041-00-5 C14H20BNO2
2-(prop-1-en-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 2-(prop-1-en-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 2223043-13-6 C12H18BNO2S
2-(pyridin-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2-(pyridin-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2223049-45-2 C15H18BN3O2
2-(pyridin-4-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2-(pyridin-4-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2223043-54-5 C15H18BN3O2
2-(sec-Butyl)-6-(piperidin-4-yl)pyridine-4-boronic acid 2-(sec-Butyl)-6-(piperidin-4-yl)pyridine-4-boronic acid 2225153-24-0 C14H23BN2O2
2-(tert-Butyl)-4-hydroxythiazole 2-(tert-Butyl)-4-hydroxythiazole 1159820-62-8 C7H11NOS
2-(tert-Butyl)-5-chloropyridine-3-boronic acid pinacol ester 2-(tert-Butyl)-5-chloropyridine-3-boronic acid pinacol ester 2223012-06-2 C15H23BClNO2
2-(tert-Butyl)pyridine-3-boronic acid pinacol ester 2-(tert-Butyl)pyridine-3-boronic acid pinacol ester 2223029-60-3 C15H24BNO2
2-(tetrahydrofuran-3-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 2-(tetrahydrofuran-3-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 2222996-25-8 C16H21BF3NO3
2,2'-Bipyridine-3-boronic acid 2,2'-Bipyridine-3-boronic acid 2225180-22-1 C10H9BN2O2
2,4'-Bipyridine-3-boronic acid 2,4'-Bipyridine-3-boronic acid 2225177-91-1 C10H9BN2O2
2,4-Dibromo-5-(2-fluorophenyl)pyridine 2,4-Dibromo-5-(2-fluorophenyl)pyridine 1381933-48-7 C11H6Br2FN
2,4-Dibromo-5-(4-pyridyl)pyridine 2,4-Dibromo-5-(4-pyridyl)pyridine 1381941-23-6 C10H6Br2N2
2,4-Dibromo-5-(cyclohexyl)pyridine 2,4-Dibromo-5-(cyclohexyl)pyridine 1314355-06-0 C11H13Br2N
2,4-Dibromo-6-cyclohexylpyridine 2,4-Dibromo-6-cyclohexylpyridine 1353854-94-0 C11H13Br2N
2-Amino-3,4'-bipyridine 2-Amino-3,4'-bipyridine 1214324-02-3 C10H9N3
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