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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
4-Bromo-3-amino-6-(2-furyl)pyridine 4-Bromo-3-amino-6-(2-furyl)pyridine 1381941-21-4 C9H7BrN2O
4-Bromo-3-amino-6-(2-pyridyl)pyridine 4-Bromo-3-amino-6-(2-pyridyl)pyridine 1381936-65-7 C10H8BrN3
4-Bromo-3-amino-6-(4-methylimidazol-1-yl)pyridine 4-Bromo-3-amino-6-(4-methylimidazol-1-yl)pyridine 1381942-02-4 C9H9BrN4
4-Bromo-3-amino-6-(piperidino)pyridine 4-Bromo-3-amino-6-(piperidino)pyridine 1381943-94-7 C10H14BrN3
4-Bromo-3-cyano-2-methylpyridine 4-Bromo-3-cyano-2-methylpyridine 1374665-87-8 C7H5BrN2
4-Bromo-5-ethyl-2-(diethylamino)thiazole 4-Bromo-5-ethyl-2-(diethylamino)thiazole 1643577-08-5 C9H15BrN2S
4-bromo-5-fluoro-2-(methyl-d3)pyridine-3,6-d2 4-bromo-5-fluoro-2-(methyl-d3)pyridine-3,6-d2 2294944-68-4 C6H5BrFN
4-Bromo-6-(1H-pyrrol-1-yl)pyrimidine 4-Bromo-6-(1H-pyrrol-1-yl)pyrimidine 1314356-18-7 C8H6BrN3
4-Bromo-6-(4-tolyl)pyrimidine 4-Bromo-6-(4-tolyl)pyrimidine 1086382-21-9 C11H9BrN2
4-BROMO-6-(PIPERIDIN-3-YL)PYRIMIDINE 4-BROMO-6-(PIPERIDIN-3-YL)PYRIMIDINE 1622835-48-6 C9H12BrN3
4-bromopyrimidine-2,5,6-d3 4-bromopyrimidine-2,5,6-d3 2241865-73-4 C4H3BrN2
4-CHLORO-2-(3-METHYLPIPERIDIN-1-YL)PYRIMIDINE 4-CHLORO-2-(3-METHYLPIPERIDIN-1-YL)PYRIMIDINE 1434127-68-0 C10H14ClN3
4-Chloro-2-methyl-6-(5-pyrimidyl)pyrimidine 4-Chloro-2-methyl-6-(5-pyrimidyl)pyrimidine 1159818-87-7 C9H7ClN4
4-CHLORO-3-(ISO-PROPOXY)PYRIDINE 4-CHLORO-3-(ISO-PROPOXY)PYRIDINE 1395038-34-2 C8H10ClNO
4-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-ol 4-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-ol 2256755-31-2 C11H15BClNO3
4-Chloro-5-bromo-2-(3-methoxyphenyl)pyrimidine 4-Chloro-5-bromo-2-(3-methoxyphenyl)pyrimidine 1399480-98-8 C11H8BrClN2O
4-Chloro-5-bromo-2-(3-trifluoromethylphenyl)pyrimidine 4-Chloro-5-bromo-2-(3-trifluoromethylphenyl)pyrimidine 1399480-93-3 C11H5BrClF3N2
4-Chloro-5-bromo-2-(cyclopentyl)pyrimidine 4-Chloro-5-bromo-2-(cyclopentyl)pyrimidine 1399482-53-1 C9H10BrClN2
4-Chloro-5-bromo-2-(imidazol-1-yl)pyrimidine 4-Chloro-5-bromo-2-(imidazol-1-yl)pyrimidine 1399481-59-4 C7H4BrClN4
4-chloropyridine-2,3,5,6-d4 4-chloropyridine-2,3,5,6-d4 75871-56-6 C5H4ClN
4-fluoro-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-2-yl)pyridine 4-fluoro-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-2-yl)pyridine 2256755-51-6 C14H17BFN3O2
4-fluoro-2-(tetrahydro-2H-pyran-2-yl)pyridine 4-fluoro-2-(tetrahydro-2H-pyran-2-yl)pyridine 2256709-26-7 C10H12FNO
4-Hydroxy-2-(2-thienyl)pyridine 4-Hydroxy-2-(2-thienyl)pyridine 1159817-06-7 C9H7NOS
4-Hydroxy-2-(5-pyrimidyl)thiazole 4-Hydroxy-2-(5-pyrimidyl)thiazole 1159815-62-9 C7H5N3OS
4-Hydroxy-2-phenyl-6-(3-pyridyl)pyrimidine 4-Hydroxy-2-phenyl-6-(3-pyridyl)pyrimidine 263244-05-9 C15H11N3O
4-Hydroxy-2-phenyl-6-cyclopropylpyrimidine 4-Hydroxy-2-phenyl-6-cyclopropylpyrimidine 1159819-83-6 C13H12N2O
4-Hydroxy-6-(5-thiazolyl)-2-cyclopropylpyrimidine 4-Hydroxy-6-(5-thiazolyl)-2-cyclopropylpyrimidine 1159815-47-0 C10H9N3OS
4-Hydroxy-6-methyl-2-(2-furyl)pyrimidine 4-Hydroxy-6-methyl-2-(2-furyl)pyrimidine 27110-91-4 C9H8N2O2
5-(1H-imidazol-2-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 5-(1H-imidazol-2-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2256755-60-7 C14H18BN3O2
5-(2-METHYLPROPYL)PYRIDIN-2-AMINE 5-(2-METHYLPROPYL)PYRIDIN-2-AMINE 1341593-51-8 C9H14N2
5-(3-bromophenyl)-2-(methyl-d3)pyrimidine-4,6-d2 5-(3-bromophenyl)-2-(methyl-d3)pyrimidine-4,6-d2 2256712-04-4 C11H9BrN2
5-(4-bromophenyl)-1,3-dioxane 5-(4-bromophenyl)-1,3-dioxane 2241866-61-3 C10H11BrO2
5-(4-bromophenyl)-2-chloropyrimidine-4,6-d2 5-(4-bromophenyl)-2-chloropyrimidine-4,6-d2 2256712-10-2 C10H6BrClN2
5-(ethoxy-d5)pyridin-2-amine 5-(ethoxy-d5)pyridin-2-amine 1643537-53-4 C7H10N2O
5-(oxetan-3-yl)pyridin-2-amine 5-(oxetan-3-yl)pyridin-2-amine 2222934-17-8 C8H10N2O
5-(tetrahydro-2H-pyran-3-yl)pyridin-2-ol 5-(tetrahydro-2H-pyran-3-yl)pyridin-2-ol 2222934-58-7 C10H13NO2
5,5'-DI-TERT-BUTYL-2,2'-BIPYRIDINE 5,5'-DI-TERT-BUTYL-2,2'-BIPYRIDINE 1202019-92-8 C18H24N2
5-Amino-2-(2-chlorophenyl)thiazole 5-Amino-2-(2-chlorophenyl)thiazole 1353853-65-2 C9H7ClN2S
5-Amino-2-(3-methoxyphenyl)thiazole 5-Amino-2-(3-methoxyphenyl)thiazole 1159821-31-4 C10H10N2OS
5-Amino-2-(4-chlorophenyl)thiazole 5-Amino-2-(4-chlorophenyl)thiazole 1353853-61-8 C9H7ClN2S
5-Amino-2-(oxan-2-yl)thiazole 5-Amino-2-(oxan-2-yl)thiazole 1622834-70-1 C8H12N2OS
5-Bromo-2-(2-furyl)thiazole 5-Bromo-2-(2-furyl)thiazole 1142194-97-5 C7H4BrNOS
5-BROMO-2-(3-METHYL-1H-PYRAZOL-1-YL)PYRIDIN-4-AMINE 5-BROMO-2-(3-METHYL-1H-PYRAZOL-1-YL)PYRIDIN-4-AMINE 1381933-20-5 C9H9BrN4
5-BROMO-2-(4-METHYL-1H-IMIDAZOL-1-YL)PYRIDIN-4-AMINE 5-BROMO-2-(4-METHYL-1H-IMIDAZOL-1-YL)PYRIDIN-4-AMINE 1381933-30-7 C9H9BrN4
5-Bromo-2-(4-pyridyl)thiazole 5-Bromo-2-(4-pyridyl)thiazole 1159821-67-6 C8H5BrN2S
5-BROMO-2-(MORPHOLIN-4-YL)PYRIDIN-4-AMINE 5-BROMO-2-(MORPHOLIN-4-YL)PYRIDIN-4-AMINE 1354288-32-6 C9H12BrN3O
5-bromo-2-(tetrahydro-2H-pyran-2-yl)pyrimidine 5-bromo-2-(tetrahydro-2H-pyran-2-yl)pyrimidine 1622835-08-8 C9H11BrN2O
5-BROMO-2-(THIOPHEN-2-YL)PYRIDIN-4-AMINE 5-BROMO-2-(THIOPHEN-2-YL)PYRIDIN-4-AMINE 1381934-83-3 C9H7BrN2S
5-Bromo-2-methyl-4-ethylthiazole 5-Bromo-2-methyl-4-ethylthiazole 1508082-85-6 C6H8BrNS
5-Bromo-4-(n-propyl)-2-ethylthiazole 5-Bromo-4-(n-propyl)-2-ethylthiazole 1643562-62-2 C8H12BrNS
5-Bromo-4-cyclopropyl-2-tert-butylthiazole 5-Bromo-4-cyclopropyl-2-tert-butylthiazole 1314357-28-2 C10H14BrNS
5-Bromo-4-hydroxy-2-(iso-propyl)pyrimidine 5-Bromo-4-hydroxy-2-(iso-propyl)pyrimidine 1044767-88-5 C7H9BrN2O
5-bromopyrimidin-4,6-d2-2-ol 5-bromopyrimidin-4,6-d2-2-ol 2241865-60-9 C4HBrD2N2O
5-Hydroxy-2-(3-Furyl)thiazole 5-Hydroxy-2-(3-Furyl)thiazole 1159817-90-9 C7H5NO2S
4-(Thiazol-2-yl)pyridine-3-boronic acid pinacol ester 4-(Thiazol-2-yl)pyridine-3-boronic acid pinacol ester 2223036-93-7 C14H17BN2O2S
5-(4-Fluoro-2-methylphenyl)pyridine-2-boronic acid pinacol ester 5-(4-Fluoro-2-methylphenyl)pyridine-2-boronic acid pinacol ester 1402227-28-4 C18H21BFNO2
2-Amino-4-(sec-butyl)pyrimidine-5-boronic acid pinacol ester 2-Amino-4-(sec-butyl)pyrimidine-5-boronic acid pinacol ester 2223005-54-5 C14H24BN3O2
2-Amino-4-(3-furyl)pyrimidine-5-boronic acid pinacol ester 2-Amino-4-(3-furyl)pyrimidine-5-boronic acid pinacol ester 2223055-52-3 C14H18BN3O3
2-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223049-15-6 C14H20BNO3
4,4,5,5-tetramethyl-2-(5-(tetrahydrofuran-3-yl)thiophen-2-yl)-1,3,2-dioxaborolane 4,4,5,5-tetramethyl-2-(5-(tetrahydrofuran-3-yl)thiophen-2-yl)-1,3,2-dioxaborolane 2222996-66-7 C14H21BO3S
2-(oxetan-3-yl)-6-(tetrahydrofuran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(oxetan-3-yl)-6-(tetrahydrofuran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223005-63-6 C18H26BNO4
tert-butyl 2-(6-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)morpholine-4-carboxylate tert-butyl 2-(6-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)morpholine-4-carboxylate 2223006-14-0 C20H30BFN2O5
tert-butyl 2-(2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)morpholine-4-carboxylate tert-butyl 2-(2-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)morpholine-4-carboxylate 2223009-46-7 C21H31BFNO5
tert-butyl 2-(2-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)morpholine-4-carboxylate tert-butyl 2-(2-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)morpholine-4-carboxylate 2223005-31-8 C24H36BNO5
2-(2-cyclopropyl-5-(tetrahydrofuran-2-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(2-cyclopropyl-5-(tetrahydrofuran-2-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2223009-92-3 C19H27BO3
2-(3-cyclopropyl-5-(tetrahydrofuran-2-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(3-cyclopropyl-5-(tetrahydrofuran-2-yl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2222997-12-6 C19H27BO3
4-(1,3-dioxan-5-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 4-(1,3-dioxan-5-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2241866-36-2 C15H22BNO4
2-bromo-6-(1,3-dioxan-5-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-bromo-6-(1,3-dioxan-5-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2241866-41-9 C15H21BBrNO4
4-(Tetrahydro-2H-pyran-3-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 4-(Tetrahydro-2H-pyran-3-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine 2223006-45-7 C17H23BF3NO3
2-Fluoro-4-isopropyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-Fluoro-4-isopropyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2223054-03-1 C14H21BFNO2
6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bipyridine-3',4',5',6'-d4 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bipyridine-3',4',5',6'-d4 2241867-10-5 C16H15BD4N2O2
tert-Butyl 4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-4-yl)piperidine-1-carboxylate tert-Butyl 4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-4-yl)piperidine-1-carboxylate 2223044-90-2 C22H32BF3N2O4
1-(6-Chloro-3-pyridyl)-1H-pyrazole-4-boronic acid pinacol ester 1-(6-Chloro-3-pyridyl)-1H-pyrazole-4-boronic acid pinacol ester 1402174-46-2 C14H17BClN3O2
1-(5-Cyclopropyl-3-pyridyl)-1H-imidazole-4-boronic acid pinacol ester 1-(5-Cyclopropyl-3-pyridyl)-1H-imidazole-4-boronic acid pinacol ester 1402226-83-8 C17H22BN3O2
3-Methyl-1-(5-cyclopropylpyridin-3-yl)-1H-pyrazole-4-boronic acid pinacol ester 3-Methyl-1-(5-cyclopropylpyridin-3-yl)-1H-pyrazole-4-boronic acid pinacol ester 2223054-41-7 C18H24BN3O2
1-(PYRIMIDIN-2-YL)-1H-PYRAZOL-3-YLBORONIC ACID PINACOL ESTER 1-(PYRIMIDIN-2-YL)-1H-PYRAZOL-3-YLBORONIC ACID PINACOL ESTER 2223037-62-3 C13H17BN4O2
5-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-1-yl)pyrimidine 5-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-1-yl)pyrimidine 2223045-28-9 C13H17BN4O2
1-(3-Bromo-4-pyridyl)pyrazole-4-boronic acid pinacol ester 1-(3-Bromo-4-pyridyl)pyrazole-4-boronic acid pinacol ester 1402233-79-7 C14H17BBrN3O2
1-(ISO-BUTYL)-4-(TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1H-1,2,3-TRIAZOLE 1-(ISO-BUTYL)-4-(TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1H-1,2,3-TRIAZOLE 2223039-03-8 C12H22BN3O2
1-(OXOLAN-2-YL)-4-(TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1H-1,2,3-TRIAZOLE 1-(OXOLAN-2-YL)-4-(TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1H-1,2,3-TRIAZOLE 2223005-95-4 C12H20BN3O3
2-(5-(1,4-dioxan-2-yl)thiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(5-(1,4-dioxan-2-yl)thiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2222995-75-5 C14H21BO4S
4-Chloro-2-(cyclopentyl)pyrimidine-5-boronic acid pinacol ester 4-Chloro-2-(cyclopentyl)pyrimidine-5-boronic acid pinacol ester 2223043-96-5 C15H22BClN2O2
4-Chloro-2-(2-methylpiperidin-1-yl)pyrimidine-5-boronic acid pinacol ester 4-Chloro-2-(2-methylpiperidin-1-yl)pyrimidine-5-boronic acid pinacol ester 2223006-04-8 C16H25BClN3O2
5-Hydroxy-2-(4-trifluoromethylphenyl)thiazole 5-Hydroxy-2-(4-trifluoromethylphenyl)thiazole 1159821-27-8 C10H6F3NOS
6-(2-AMINOPHENYL)PYRIDIN-3-AMINE 6-(2-AMINOPHENYL)PYRIDIN-3-AMINE 1563532-77-3 C11H11N3
6-(3-FLUOROPHENYL)PYRIDIN-2-AMINE 6-(3-FLUOROPHENYL)PYRIDIN-2-AMINE 882014-20-2 C11H9FN2
6-(BUTAN-2-YL)PYRIDIN-3-AMINE 6-(BUTAN-2-YL)PYRIDIN-3-AMINE 859064-55-4 C9H14N2
6-(ethoxy-d5)pyridin-2,4,5-d3-3-amine 6-(ethoxy-d5)pyridin-2,4,5-d3-3-amine 2259316-21-5 C7H10N2O
6-(SEC-BUTYL)PYRIDIN-2-AMINE 6-(SEC-BUTYL)PYRIDIN-2-AMINE 1372124-74-7 C9H14N2
6-(tetrahydro-2H-pyran-3-yl)pyrimidin-4-amine 6-(tetrahydro-2H-pyran-3-yl)pyrimidin-4-amine 2168574-49-8 C9H13N3O
6-(tetrahydrofuran-2-yl)pyridazin-3-amine 6-(tetrahydrofuran-2-yl)pyridazin-3-amine 1856161-91-5 C8H11N3O
6-chloropyrimidin-2,5-d2-4-ol 6-chloropyrimidin-2,5-d2-4-ol 2259315-71-2 C4HClD2N2O
Methyl 2,3-dibromo-4-pyridinecarboxylate Methyl 2,3-dibromo-4-pyridinecarboxylate 1214386-41-0 C7H5Br2NO2
pyrimidin-d3-5-ol pyrimidin-d3-5-ol 2241866-14-6 C4HD3N2O
tert-butyl 4-(2-chloropyrimidin-5-yl)piperidine-1-carboxylate tert-butyl 4-(2-chloropyrimidin-5-yl)piperidine-1-carboxylate 1563535-09-0 C14H20ClN3O2
tert-butyl 4-(2-hydroxypyrimidin-5-yl)piperidine-1-carboxylate tert-butyl 4-(2-hydroxypyrimidin-5-yl)piperidine-1-carboxylate 2222934-02-1 C14H21N3O3
Tris-2,4,6-(2-pyrimidyl)-1,3,5-triazine Tris-2,4,6-(2-pyrimidyl)-1,3,5-triazine 60681-68-7 C15H9N9
4,5-DIMETHYL-1H-IMIDAZOLE-2-THIOL 4,5-DIMETHYL-1H-IMIDAZOLE-2-THIOL 1192-72-9 C5H8N2S
(2S,5S)-5-methylpyrrolidine-2-carboxylic acid hydrochloride (2S,5S)-5-methylpyrrolidine-2-carboxylic acid hydrochloride 38228-14-7 C6H12ClNO2
[2-[(3R,4S)-4-ethyl-1-[(phenylmethoxy)carbonyl]-3-pyrrolidinyl]-2-oxoethyl]dimethyl-Sulfoxonium inner salt [2-[(3R,4S)-4-ethyl-1-[(phenylmethoxy)carbonyl]-3-pyrrolidinyl]-2-oxoethyl]dimethyl-Sulfoxonium inner salt 2050038-78-1 C18H25NO4S
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