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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
1-(2-aminopyrimidin-4-yl)piperidin-3-ol 1-(2-aminopyrimidin-4-yl)piperidin-3-ol 1314355-94-6 C9H14N4O
4-(1-methyl-1H-pyrazol-4-yl)pyridin-3-amine 4-(1-methyl-1H-pyrazol-4-yl)pyridin-3-amine 1367992-14-0 C9H10N4
2-Azetidinemethanamine 2-Azetidinemethanamine 103550-76-1 C4H10N2
2-((S)-1-acryloyl-4-(7-(8-methylnaphthalen-1-yl)-2-(((S)-1-methylpyrrolidin-2-yl)methoxy)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)piperazin-2-yl)acetonitrile 2-((S)-1-acryloyl-4-(7-(8-methylnaphthalen-1-yl)-2-(((S)-1-methylpyrrolidin-2-yl)methoxy)-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidin-4-yl)piperazin-2-yl)acetonitrile 2206736-04-9 C33H39N7O2
6-CYCLOHEXYLPYRIDIN-3-AMINE 6-CYCLOHEXYLPYRIDIN-3-AMINE 1159815-49-2 C11H16N2
(2-(2-hydroxypropan-2-yl-1,1,1,3,3,3-d6)pyrimidin-5-yl)boronic acid (2-(2-hydroxypropan-2-yl-1,1,1,3,3,3-d6)pyrimidin-5-yl)boronic acid 2241877-08-5 C7H11BN2O3
(2-(3-fluorophenyl)pyrimidin-5-yl)boronic acid (2-(3-fluorophenyl)pyrimidin-5-yl)boronic acid 2225176-72-5 C10H8BFN2O2
(2-(ethyl-d5)pyridin-4-yl)boronic acid (2-(ethyl-d5)pyridin-4-yl)boronic acid 2241875-86-3 C7H10BNO2
(2-(piperazin-1-yl-2,2,3,3,5,5,6,6-d8)pyrimidin-5-yl)boronic acid (2-(piperazin-1-yl-2,2,3,3,5,5,6,6-d8)pyrimidin-5-yl)boronic acid 2241877-06-3 C8H13BN4O2
(2-(piperidin-4-yl)pyridin-4-yl)boronic acid (2-(piperidin-4-yl)pyridin-4-yl)boronic acid 2225173-37-3 C10H15BN2O2
(2-(tetrahydro-2H-pyran-4-yl)pyridin-4-yl)boronic acid (2-(tetrahydro-2H-pyran-4-yl)pyridin-4-yl)boronic acid 2225178-65-2 C10H14BNO3
(2-chloro-6-(propan-2-yl-d7)pyridin-4-yl)boronic acid (2-chloro-6-(propan-2-yl-d7)pyridin-4-yl)boronic acid 2241875-95-4 C8H11BClNO2
(5-(2-hydroxypropan-2-yl-1,1,1,3,3,3-d6)pyridin-3-yl)boronic acid (5-(2-hydroxypropan-2-yl-1,1,1,3,3,3-d6)pyridin-3-yl)boronic acid 2241876-07-1 C8H12BNO3
(5,6-bis(methyl-d3)pyridin-3-yl-2,4-d2)boronic acid (5,6-bis(methyl-d3)pyridin-3-yl-2,4-d2)boronic acid 2241870-58-4 C7H10BNO2
(6-(ethyl-d5)pyridin-3-yl)boronic acid (6-(ethyl-d5)pyridin-3-yl)boronic acid 2241875-60-3 C7H10BNO2
[2-(METHOXYCARBONYL)-6-(CYCLOPROPYL)PYRIDIN-4-YL]BORONIC ACID [2-(METHOXYCARBONYL)-6-(CYCLOPROPYL)PYRIDIN-4-YL]BORONIC ACID 2225176-33-8 C10H12BNO4
1-(2-CHLOROPYRIMIDIN-4-YL)PIPERIDIN-2-OL 1-(2-CHLOROPYRIMIDIN-4-YL)PIPERIDIN-2-OL 1434127-31-7 C9H12ClN3O
1-(5-Cyclopropyl-3-pyridyl)-1H-pyrazole-4-boronic acid 1-(5-Cyclopropyl-3-pyridyl)-1H-pyrazole-4-boronic acid 2225169-91-3 C11H12BN3O2
1-(methyl-d3)-4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-4-yl)piperazine-2,2,3,3,5,5,6,6-d8 1-(methyl-d3)-4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-4-yl)piperazine-2,2,3,3,5,5,6,6-d8 2241874-82-6 C16H15BD11N3O2
2-(1,4-dioxan-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 2-(1,4-dioxan-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 2223003-81-2 C16H21BF3NO4
2-(2-Methoxyphenyl)pyridine-5-boronic acid 2-(2-Methoxyphenyl)pyridine-5-boronic acid 1642565-71-6 C12H12BNO3
2-(2-Methylpiperidino)pyrimidine-5-boronic acid pinacol ester 2-(2-Methylpiperidino)pyrimidine-5-boronic acid pinacol ester 1352297-55-2 C16H26BN3O2
2-(2-Trifluoromethylphenyl)pyridine-5-boronic acid 2-(2-Trifluoromethylphenyl)pyridine-5-boronic acid 2225155-91-7 C12H9BF3NO2
2-(3,5-difluorophenyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(3,5-difluorophenyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 1402227-55-7 C17H18BF2NO2
2-(3-fluorophenyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2-(3-fluorophenyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 1402173-00-5 C16H18BFN2O2
2-(3-Methylpiperidin-1-yl)pyridine-5-boronic acid 2-(3-Methylpiperidin-1-yl)pyridine-5-boronic acid 2225152-64-5 C11H17BN2O2
2-(3-Trifluoromethylphenyl)pyridine-5-boronic acid 2-(3-Trifluoromethylphenyl)pyridine-5-boronic acid 2225178-03-8 C12H9BF3NO2
2-(4-Chlorophenyl)pyridine-3-boronic acid pinacol ester 2-(4-Chlorophenyl)pyridine-3-boronic acid pinacol ester 2223029-16-9 C17H19BClNO2
2-(4-ethylphenyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(4-ethylphenyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 1402174-65-5 C19H24BNO2
2-(4-fluoro-2-methylphenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 2-(4-fluoro-2-methylphenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 1402227-76-2 C16H19BFNO2S
2-(4-Methoxyphenyl)pyridine-3-boronic acid 2-(4-Methoxyphenyl)pyridine-3-boronic acid 2225177-98-8 C12H12BNO3
2-(4-Methyl-1H-pyrazol-1-yl)pyridine-4-boronic acid 2-(4-Methyl-1H-pyrazol-1-yl)pyridine-4-boronic acid 1644060-48-9 C9H10BN3O2
2-(4-Tolyl)pyridine-3-boronic acid 2-(4-Tolyl)pyridine-3-boronic acid 2225178-51-6 C12H12BNO2
2-(4-Trifluoromethylphenyl)pyridine-3-boronic acid 2-(4-Trifluoromethylphenyl)pyridine-3-boronic acid 2225177-46-6 C12H9BF3NO2
2-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-3-yl)pyridine 2-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-3-yl)pyridine 1402240-74-7 C15H18BNO2S
2-(5-cyclopropyl-2-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(5-cyclopropyl-2-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2223039-51-6 C16H23BO3
2-(5-isobutylfuran-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(5-isobutylfuran-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2223012-02-8 C14H23BO3
2-(Cyclobutyl)pyridine-3-boronic acid pinacol ester 2-(Cyclobutyl)pyridine-3-boronic acid pinacol ester 2223039-18-5 C15H22BNO2
2-(Cyclopentoxy)pyridine-4-boronic acid 2-(Cyclopentoxy)pyridine-4-boronic acid 2225177-11-5 C10H14BNO3
2-(Cyclopentyl)-6-(oxolan-3-yl)pyridine-4-boronic acid pinacol ester 2-(Cyclopentyl)-6-(oxolan-3-yl)pyridine-4-boronic acid pinacol ester 2223003-19-6 C20H30BNO3
2-(ethoxy-d5)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(ethoxy-d5)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2241867-15-0 C13H20BNO3
2-(furan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2-(furan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine 2223046-07-7 C14H17BN2O3
2-(iso-Butyl)-6-(N-Boc-piperidin-3-yl)pyridine-4-boronic acid pinacol ester 2-(iso-Butyl)-6-(N-Boc-piperidin-3-yl)pyridine-4-boronic acid pinacol ester 2222995-97-1 C25H41BN2O4
2-(iso-Propyl)-5-chloropyridine-3-boronic acid pinacol ester 2-(iso-Propyl)-5-chloropyridine-3-boronic acid pinacol ester 2223047-49-0 C14H21BClNO2
2-(iso-Propyl)-6-(piperidin-3-yl)pyridine-4-boronic acid 2-(iso-Propyl)-6-(piperidin-3-yl)pyridine-4-boronic acid 2225152-89-4 C13H21BN2O2
2-(methoxy-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(methoxy-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2241875-55-6 C12H18BNO3
2-(N-Boc-morpholin-2-yl)pyrimidine 2-(N-Boc-morpholin-2-yl)pyrimidine 1622834-48-3 C13H19N3O3
2-(N-Boc-Pyrrolidin-3-yl)pyrimidine-5-boronic acid pinacol ester 2-(N-Boc-Pyrrolidin-3-yl)pyrimidine-5-boronic acid pinacol ester 1350543-49-5 C19H30BN3O4
2-(n-Propoxy)pyridine-4-boronic acid 2-(n-Propoxy)pyridine-4-boronic acid 2225172-11-0 C8H12BNO3
2-(Oxan-4-yl)-6-(1,4-dioxan-2-yl)pyridine-4-boronic acid pinacol ester 2-(Oxan-4-yl)-6-(1,4-dioxan-2-yl)pyridine-4-boronic acid pinacol ester 2222996-13-4 C20H30BNO5
2-(prop-1-en-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(prop-1-en-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223051-09-8 C14H20BNO2
2-(tert-Butyl)-5-(cyclopropyl)pyridine-3-boronic acid 2-(tert-Butyl)-5-(cyclopropyl)pyridine-3-boronic acid 2225169-23-1 C12H18BNO2
2-(tert-butyl)-6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(tert-butyl)-6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223044-62-8 C16H26BNO2
2-(tetrahydro-2H-pyran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 2-(tetrahydro-2H-pyran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 2223008-97-5 C17H23BF3NO3
2-(tetrahydrofuran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 2-(tetrahydrofuran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 2222997-47-7 C13H20BNO3S
2-(tetrahydrofuran-3-yl)pyrimidin-5-amine 2-(tetrahydrofuran-3-yl)pyrimidin-5-amine 1247141-42-9 C8H11N3O
2,3-Dibromopyridine-4-boronic acid pinacol ester 2,3-Dibromopyridine-4-boronic acid pinacol ester 1402237-95-9 C11H14BBr2NO2
2,4-Dibromo-5-(3-trifluoromethylphenyl)pyridine 2,4-Dibromo-5-(3-trifluoromethylphenyl)pyridine 1381941-68-9 C12H6Br2F3N
2,4-Dichloro-6-(3,4-difluorophenyl)pyrimidine 2,4-Dichloro-6-(3,4-difluorophenyl)pyrimidine 1353854-91-7 C10H4Cl2F2N2
2,4-Dichloro-6-(3-tolyl)pyrimidine 2,4-Dichloro-6-(3-tolyl)pyrimidine 1353856-93-5 C11H8Cl2N2
2,5-DI(N-BOC-PIPERIDIN-4-YL)PYRIDINE 2,5-DI(N-BOC-PIPERIDIN-4-YL)PYRIDINE 1643564-40-2 C25H39N3O4
2,5-Dibromo-4-(2-furyl)pyridine 2,5-Dibromo-4-(2-furyl)pyridine 1381938-59-5 C9H5Br2NO
2,5-Dibromo-5-(4-methoxyphenyl)pyridine 2,5-Dibromo-5-(4-methoxyphenyl)pyridine 1381941-28-1 C12H9Br2NO
2,6-Di(acetyl)pyridine-4-boronic acid pinacol ester 2,6-Di(acetyl)pyridine-4-boronic acid pinacol ester 2223044-89-9 C15H20BNO4
2,6-DI(N-BOC-PIPERIDIN-4-YL)PYRIDINE-4-BORONIC ACID PINACOL ESTER 2,6-DI(N-BOC-PIPERIDIN-4-YL)PYRIDINE-4-BORONIC ACID PINACOL ESTER 2223011-67-2 C31H50BN3O6
2-[Pyridazin-3(2H)-one]-4-bromothiazole 2-[Pyridazin-3(2H)-one]-4-bromothiazole 1198154-94-7 C7H4BrN3OS
2-AMINO-3-(ISO-BUTYL)PYRIDINE 2-AMINO-3-(ISO-BUTYL)PYRIDINE 1417519-70-0 C9H14N2
2-AMINO-3-(THIAZOL-4-YL)PYRIDINE 2-AMINO-3-(THIAZOL-4-YL)PYRIDINE 1417518-17-2 C8H7N3S
2-Amino-3-bromo-5-(3,4-difluorophenyl)pyridine 2-Amino-3-bromo-5-(3,4-difluorophenyl)pyridine 1381942-69-3 C11H7BrF2N2
2-Amino-3-bromo-5-(3-hydroxypiperidin-1-yl)pyridine 2-Amino-3-bromo-5-(3-hydroxypiperidin-1-yl)pyridine 1381941-44-1 C10H14BrN3O
2-Amino-3-bromo-5-(tert-butoxy)pyridine 2-Amino-3-bromo-5-(tert-butoxy)pyridine 1381942-98-8 C9H13BrN2O
2-Amino-4-(1H-4-methylpyrozol-1-yl)-6-(iso-propyl)pyrimidine 2-Amino-4-(1H-4-methylpyrozol-1-yl)-6-(iso-propyl)pyrimidine 1412961-43-3 C11H15N5
2-amino-4-(1H-imidazol-1-yl)-6-cyclopropylpyrimidine 2-amino-4-(1H-imidazol-1-yl)-6-cyclopropylpyrimidine 1412960-23-6 C10H11N5
2-Amino-4-(1H-pyrrol-1-yl)-6-methylpyrimidine 2-Amino-4-(1H-pyrrol-1-yl)-6-methylpyrimidine 746635-49-4 C9H10N4
2-Amino-4-(2-chlorophenyl)-6-methylpyrimidine 2-Amino-4-(2-chlorophenyl)-6-methylpyrimidine 1250982-49-0 C11H10ClN3
2-Amino-4-(2-thienyl)-6-(iso-propyl)pyrimidine 2-Amino-4-(2-thienyl)-6-(iso-propyl)pyrimidine 100128-49-2 C11H13N3S
2-Amino-4-(2-trifluoromethylphenyl)-6-(iso-propyl)pyrimidine 2-Amino-4-(2-trifluoromethylphenyl)-6-(iso-propyl)pyrimidine 1412961-71-7 C14H14F3N3
2-amino-4-(3-methylpiperidin-1-yl)-6-(tert-butyl)pyrimidine 2-amino-4-(3-methylpiperidin-1-yl)-6-(tert-butyl)pyrimidine 1412959-49-9 C14H24N4
2-amino-4-(3-thienyl)-6-(tert-butyl)pyrimidine 2-amino-4-(3-thienyl)-6-(tert-butyl)pyrimidine 1412955-44-2 C12H15N3S
2-Amino-4-(4-methylpiperidino)pyrimidine 2-Amino-4-(4-methylpiperidino)pyrimidine 1314355-89-9 C10H16N4
2-amino-4-(cyclobutyl)-6-cyclopropylpyrimidine 2-amino-4-(cyclobutyl)-6-cyclopropylpyrimidine 1412954-20-1 C11H15N3
2-Amino-4-(piperidin-1-yl)-6-(iso-propyl)pyrimidine 2-Amino-4-(piperidin-1-yl)-6-(iso-propyl)pyrimidine 1412953-76-4 C12H20N4
2-amino-4-(pyrimindin-5-yl)-6-(tert-butyl)pyrimidine 2-amino-4-(pyrimindin-5-yl)-6-(tert-butyl)pyrimidine 1412954-42-7 C12H15N5
2-Amino-4-(tert-butoxy)-6-(iso-propyl)pyrimidine 2-Amino-4-(tert-butoxy)-6-(iso-propyl)pyrimidine 1412954-09-6 C11H19N3O
2-Amino-4-bromo-5-(2-trifluoromethylphenyl)pyridine 2-Amino-4-bromo-5-(2-trifluoromethylphenyl)pyridine 1381934-73-1 C12H8BrF3N2
2-Amino-4-bromo-5-(3-trifluoromethylphenyl)pyridine 2-Amino-4-bromo-5-(3-trifluoromethylphenyl)pyridine 1381938-69-7 C12H8BrF3N2
2-Amino-4-chloro-5-(2-fluorophenyl)pyridine 2-Amino-4-chloro-5-(2-fluorophenyl)pyridine 1381937-69-4 C11H8ClFN2
2-Amino-4-chloro-5-(2-tolyl)pyridine 2-Amino-4-chloro-5-(2-tolyl)pyridine 1381941-79-2 C12H11ClN2
2-Amino-4-chloro-5-(5-pyrimidyl)pyridine 2-Amino-4-chloro-5-(5-pyrimidyl)pyridine 1381933-52-3 C9H7ClN4
2-Amino-4-chloro-5-(iso-propyl)pyridine 2-Amino-4-chloro-5-(iso-propyl)pyridine 1381941-97-4 C8H11ClN2
2-Amino-4-morpholino-6-cyclopropylpyrimidine 2-Amino-4-morpholino-6-cyclopropylpyrimidine 1354754-88-3 C11H16N4O
2-Amino-5-bromo-4-(2-tolyl)pyridine 2-Amino-5-bromo-4-(2-tolyl)pyridine 1381936-97-5 C12H11BrN2
2-Amino-5-bromo-4-(cyclopentyl)pyridine 2-Amino-5-bromo-4-(cyclopentyl)pyridine 1381937-02-5 C10H13BrN2
2-Amino-6-(2-tolyl)pyrimidine 2-Amino-6-(2-tolyl)pyrimidine 1159816-90-6 C11H11N3
2-Bromo-3-(2-pyridyl)furan 2-Bromo-3-(2-pyridyl)furan 1227960-18-0 C9H6BrNO
2-Bromo-3-(2-trifluoromethylphenyl)furan 2-Bromo-3-(2-trifluoromethylphenyl)furan 1227959-10-5 C11H6BrF3O
2-Bromo-3-(3-tolyl)pyridine 2-Bromo-3-(3-tolyl)pyridine 1417519-50-6 C12H10BrN
2-Bromo-3-(4-fluorophenyl)furan 2-Bromo-3-(4-fluorophenyl)furan 1227960-37-3 C10H6BrFO
2-Bromo-3-(5-pyrimidyl)thiophene 2-Bromo-3-(5-pyrimidyl)thiophene 71637-40-6 C8H5BrN2S
2-Bromo-3-(cyclohexyl)furan 2-Bromo-3-(cyclohexyl)furan 1227960-23-7 C10H13BrO
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