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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
2-((1-methylazetidin-3-yl)oxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-((1-methylazetidin-3-yl)oxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2710293-97-1 C15H23BN2O3
2-(2-methoxyethoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(2-methoxyethoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 1352817-26-5 C14H22BNO4
2-(oxetan-2-ylmethoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(oxetan-2-ylmethoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2710294-14-5 C15H22BNO4
2-(bicyclo[1.1.1]pentan-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-(bicyclo[1.1.1]pentan-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2710295-64-8 C16H22BNO2
2-(3-methylbicyclo[1.1.1]pentan-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 2-(3-methylbicyclo[1.1.1]pentan-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 2710295-86-4 C15H22BNO2S
2-(pyridin-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazole 2-(pyridin-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazole 2710297-44-0 C14H17BN2O3
1-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole 1-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole 2710298-15-8 C11H18BN3O3
2-(sec-butyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole 2-(sec-butyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole 2710298-54-5 C12H22BN3O2
2-(3-methoxyphenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole 2-(3-methoxyphenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole 2710298-73-8 C15H20BN3O3
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazol-2-yl)pyrimidine 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazol-2-yl)pyrimidine 2710298-78-3 C12H16BN5O2
3-ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridazine 3-ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridazine 1350543-97-3 C12H19BN2O2
tert-butyl 3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-2-yl)pyrrolidine-1-carboxylate tert-butyl 3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-2-yl)pyrrolidine-1-carboxylate
tert-butyl 4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-2-yl)piperidine-1-carboxylate tert-butyl 4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-2-yl)piperidine-1-carboxylate
3-(1,4-dioxan-2-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine 3-(1,4-dioxan-2-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine
tert-butyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4H-1,4-oxazine-4-carboxylate tert-butyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4H-1,4-oxazine-4-carboxylate
4-cyclopropyl-2-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole 4-cyclopropyl-2-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole
tert-butyl 2-(4-cyclopropyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)morpholine-4-carboxylate tert-butyl 2-(4-cyclopropyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)morpholine-4-carboxylate
4-cyclobutyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydro-2H-1,4-oxazine 4-cyclobutyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydro-2H-1,4-oxazine
tert-butyl 2,3-dimethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-4H-1,4-oxazine-4-carboxylate tert-butyl 2,3-dimethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-4H-1,4-oxazine-4-carboxylate
tert-butyl 2,3-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate tert-butyl 2,3-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate
6-methyl-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine 6-methyl-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine
8-ethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine 8-ethyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine
3-cyclobutyl-2-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 3-cyclobutyl-2-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2304818-09-3 C16H24BNO3
2-methoxy-3-(tetrahydrofuran-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2-methoxy-3-(tetrahydrofuran-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2304812-88-0 C16H24BNO4
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6,6'-bis(trifluoromethyl)-2,2'-bipyridine 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6,6'-bis(trifluoromethyl)-2,2'-bipyridine 2304817-11-4 C18H17BF6N2O2
5-bromo-1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole 5-bromo-1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole 2364587-04-0
5-bromo-1-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole 5-bromo-1-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole 2364585-59-9 C11H17BBrN3O2
(2-(methyl-d3)-6-(trifluoromethyl)pyridin-4-yl-3,5-d2)boronic acid (2-(methyl-d3)-6-(trifluoromethyl)pyridin-4-yl-3,5-d2)boronic acid 2368221-25-2 C7H2BD5F3NO2
(5-(morpholino-d8)pyridin-3-yl)boronic acid (5-(morpholino-d8)pyridin-3-yl)boronic acid 2368221-31-0 C9H5BD8N2O3
(3-(methyl-d3)pyridin-4-yl-2,5,6-d3)boronic acid (3-(methyl-d3)pyridin-4-yl-2,5,6-d3)boronic acid 2710289-63-5 C6H2BD6NO2
TRIAZOLOPYRIDAZINE TRIAZOLOPYRIDAZINE
4-Bromo-1-(2-fluorophenyl)-1H-pyrazole 4-Bromo-1-(2-fluorophenyl)-1H-pyrazole 957062-81-6 C9H6BrFN2
Gentioflavine Gentioflavine 18058-50-9 C10H11NO3
CIS-2,6-PIPERIDINE DICARBOXYLIC ACID CIS-2,6-PIPERIDINE DICARBOXYLIC ACID 59234-40-1 C7H11NO4
C-IMIDAZO[1,2-A]PYRIDIN-3-YL-METHYLAMINE C-IMIDAZO[1,2-A]PYRIDIN-3-YL-METHYLAMINE 160771-89-1 C8H9N3
5-IODO-1-METHYL-1H-PYRAZOLE 5-IODO-1-METHYL-1H-PYRAZOLE 34091-51-5 C4H5IN2
1,4,5-TRIPHENYL-1H-IMIDAZOLE-2-THIOL 1,4,5-TRIPHENYL-1H-IMIDAZOLE-2-THIOL 2349-59-9 C21H16N2S
6-Hydroxy-2-(methylsulfanyl)-4-pyrimidinecarboxylic acid 6-Hydroxy-2-(methylsulfanyl)-4-pyrimidinecarboxylic acid 6314-14-3 C6H6N2O3S
8-BROMO2-METHYL-[1,2,4]TRIAZOLO[1,5-A]PYRIDINE 8-BROMO2-METHYL-[1,2,4]TRIAZOLO[1,5-A]PYRIDINE 7169-96-2 C7H6BrN3
6-BROMO-4-IODO-1H-INDAZOLE 6-BROMO-4-IODO-1H-INDAZOLE 885519-41-5 C7H4BrIN2
4-METHYL-1H-IMIDAZOLE-2-CARBOXYLICACID 4-METHYL-1H-IMIDAZOLE-2-CARBOXYLICACID 70631-93-5 C5H6N2O2
3-BENZOYL-7-DIETHYLAMINOCOUMARIN 3-BENZOYL-7-DIETHYLAMINOCOUMARIN 77016-78-5 C20H19NO3
2,6-DIBROMOBENZALDEHYDE 2,6-DIBROMOBENZALDEHYDE 67713-23-9 C7H4Br2O
4-CHLORO-2-ISOPROPYLPYRIMIDINE 4-CHLORO-2-ISOPROPYLPYRIMIDINE 68210-26-4 C7H9ClN2
5-FLUORO-2-(1H-IMIDAZOL-2-YL)PYRIDINE 5-FLUORO-2-(1H-IMIDAZOL-2-YL)PYRIDINE 1256794-92-9 C8H6FN3
(4R)-4-FLUORO-L-PROLINE HCL (4R)-4-FLUORO-L-PROLINE HCL 60604-36-6 C5H9ClFNO2
2-(2-bromo-4-fluorophenyl)pyrrolidine 2-(2-bromo-4-fluorophenyl)pyrrolidine 1016499-98-1 C10H11BrFN
5-BROMO-2,3-DIHYDRO-ISOINDOL-1-ONE 5-BROMO-2,3-DIHYDRO-ISOINDOL-1-ONE 552330-86-6 C8H6BrNO
2-bromo-4-phenyl-1,3-oxazole 2-bromo-4-phenyl-1,3-oxazole 1060816-19-4 C9H6BrNO
2-(2-methyl-1H-imidazol-1-yl)pyridin-3-amine 2-(2-methyl-1H-imidazol-1-yl)pyridin-3-amine 937603-49-1 C9H10N4
N,N-di([1,1'-biphenyl]-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)dibenzo[b,d]furan-1-amine N,N-di([1,1'-biphenyl]-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)dibenzo[b,d]furan-1-amine 2761689-76-1 C42H36BNO3
(R,E)-5-(3-(4-benzyl-2-oxooxazolidin-3-yl)-3-oxoprop-1-en-1-yl)-N-methyl-N-phenyl-1H-indole-2-carboxamide (R,E)-5-(3-(4-benzyl-2-oxooxazolidin-3-yl)-3-oxoprop-1-en-1-yl)-N-methyl-N-phenyl-1H-indole-2-carboxamide 3047292-98-5 C29H25N3O4
1-(DIETHOXYMETHYL)IMIDAZOLE 1-(DIETHOXYMETHYL)IMIDAZOLE 61278-81-7 C8H14N2O2
(R)-2-AMINOMETHYL-1-N-CBZ-PYRROLIDINE (R)-2-AMINOMETHYL-1-N-CBZ-PYRROLIDINE 1187931-23-2 C13H18N2O2
7-chloro-5-(trifluoromethyl)[1,2,4]triazolo[1,5-a]pyrimidine 7-chloro-5-(trifluoromethyl)[1,2,4]triazolo[1,5-a]pyrimidine 926230-79-7 C6H2ClF3N4
7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid 7-methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid 1016505-59-1 C8H7N3O2
8-bromo-4-chloroquinazoline 8-bromo-4-chloroquinazoline 125096-72-2 C8H4BrClN2
4-chloro-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine 4-chloro-6,7-dihydro-5H-pyrrolo[2,3-d]pyrimidine 16372-08-0 C6H6ClN3
4,4'-dithiobis(5-amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-1H-pyrazole-3-carbonitrile) 4,4'-dithiobis(5-amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-1H-pyrazole-3-carbonitrile) 130755-46-3 C22H8Cl4F6N8S2
4-Thiazolepropanoic  acid 4-Thiazolepropanoic acid 933735-27-4 C6H7NO2S
3-PROPYLPYRIDIN-2-AMINE 3-PROPYLPYRIDIN-2-AMINE 92410-91-8 C8H12N2
4-[4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)BENZYL]MORPHOLINE 4-[4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)BENZYL]MORPHOLINE 364794-79-6 C17H26BNO3
1-Benzyl-4-iodo-1H-pyrazole 1-Benzyl-4-iodo-1H-pyrazole 50877-42-4 C10H9IN2
2-(4-bromophenyl)-4,6-diphenyl-1,3,5-triazine 2-(4-bromophenyl)-4,6-diphenyl-1,3,5-triazine 23449-08-3 C21H14BrN3
5-AMINO-3-METHYL-1-P-TOLYLPYRAZOLE 5-AMINO-3-METHYL-1-P-TOLYLPYRAZOLE 62535-60-8 C11H13N3
3-methyl-1H-indazol-6-amine 3-methyl-1H-indazol-6-amine 79173-62-9 C8H9N3
1,2,4-TRIAZOLE 1,2,4-TRIAZOLE 736917-78-5 C2H3N3
1,2-Dioxane 1,2-Dioxane 5703-46-8 C4H8O2
4-bromo-1,5-dimethyl-1H-pyrazole 4-bromo-1,5-dimethyl-1H-pyrazole 5775-86-0 C5H7BrN2
4,5-epoxytetrahydrophthalic acid diglycidylester 4,5-epoxytetrahydrophthalic acid diglycidylester 25293-64-5 C14H18O7
2-Amino-7-bromobenzothiazole 2-Amino-7-bromobenzothiazole 20358-05-8 C7H5BrN2S
Ethyl 3-bromoimidazo[1,2-a]pyridine-2-carboxylate Ethyl 3-bromoimidazo[1,2-a]pyridine-2-carboxylate 143982-54-1 C10H9BrN2O2
6-PYRROLIDINO-7-DEAZAPURINE 6-PYRROLIDINO-7-DEAZAPURINE 90870-68-1 C10H12N4
1-Methyl-1H-imidazo[4,5-c]pyridine 1-Methyl-1H-imidazo[4,5-c]pyridine 5028-32-0 C7H7N3
4-Acryloylmorpholine 4-Acryloylmorpholine 5117-12-4 C7H11NO2
2-Azabicyclo[3.2.1]octane 2-Azabicyclo[3.2.1]octane 279-79-8 C7H13N
1-Phenyl-1H-pyrazol-3(2H)-one 1-Phenyl-1H-pyrazol-3(2H)-one 1008-79-3 C9H8N2O
2,6-DIBROMOQUINAZOLINE 2,6-DIBROMOQUINAZOLINE 161425-75-8 C8H4Br2N2
5-(4-METHOXYPHENYL)-1H-IMIDAZOL-2-AMINE 5-(4-METHOXYPHENYL)-1H-IMIDAZOL-2-AMINE 60472-20-0 C10H11N3O
5-CHLOROPYRIMIDINE-2-CARBALDEHYDE 5-CHLOROPYRIMIDINE-2-CARBALDEHYDE 944900-20-3 C5H3ClN2O
4,6-DICHLORO-2-(3-FLUOROPHENYL)PYRIMIDINE 4,6-DICHLORO-2-(3-FLUOROPHENYL)PYRIMIDINE 83217-45-2 C10H5Cl2FN2
2,2'-BIPYRIDINE-3,3'-DICARBONITRILE 2,2'-BIPYRIDINE-3,3'-DICARBONITRILE 136869-49-3 C12H6N4
2-BROMO-4-(3-METHYLPHENYL)THIAZOLE 2-BROMO-4-(3-METHYLPHENYL)THIAZOLE 887625-76-5 C10H8BrNS
3-Bromo-1,5-dimethylpyrazole 3-Bromo-1,5-dimethylpyrazole 5744-80-9 C5H7BrN2
2-METHYL-3-(4-SULFOBUTYL)BENZOXAZOLIUM BETAINE 2-METHYL-3-(4-SULFOBUTYL)BENZOXAZOLIUM BETAINE 112339-60-3 C12H15NO4S
4-BROMO-1,5-DIMETHYL-1H-1,2,3-TRIAZOLE 4-BROMO-1,5-DIMETHYL-1H-1,2,3-TRIAZOLE 885877-41-8 C4H6BrN3
6-methyl-2-thiophen-3-yl-1H-pyrimidin-4-one 6-methyl-2-thiophen-3-yl-1H-pyrimidin-4-one 1154551-86-6 C9H8N2OS
5-PHENYLISOXAZOLE-3-CARBOXYLIC ACID 5-PHENYLISOXAZOLE-3-CARBOXYLIC ACID 14441-90-8 C10H7NO3
8-METHYL-IMIDAZO[1,2-A]PYRIDINE-2-CARBOXYLIC ACID ETHYL ESTER 8-METHYL-IMIDAZO[1,2-A]PYRIDINE-2-CARBOXYLIC ACID ETHYL ESTER 67625-40-5 C11H12N2O2
1-Ethylpyrazole 1-Ethylpyrazole 2817-71-2 C5H8N2
3-(3,5-di-pyridin-4-yl-(1,2,4)triazol-1-ylmethyl)-pyridine 3-(3,5-di-pyridin-4-yl-(1,2,4)triazol-1-ylmethyl)-pyridine 55391-41-8 C18H14N6
3,4,5-tribromopyridin-2-amine 3,4,5-tribromopyridin-2-amine 856848-75-4 C5H3Br3N2
5-fluoro-2-methoxy-3-(pyrrolidin-2-yl)pyridine 5-fluoro-2-methoxy-3-(pyrrolidin-2-yl)pyridine 1337444-35-5 C10H13FN2O
5-(Trifluoromethyl)-1H-1,2,3-triazole 5-(Trifluoromethyl)-1H-1,2,3-triazole 40964-54-3 C3H2F3N3
3-(4-Bromophenyl)-6-(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione 3-(4-Bromophenyl)-6-(thiophen-2-yl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione 1255381-85-1 C16H9BrN2O2S
Isoxazole, 3-chloro-4,5-dihydro-5,5-dimethyl- Isoxazole, 3-chloro-4,5-dihydro-5,5-dimethyl- 326829-08-7 C5H8ClNO
IDRA 21 IDRA 21 22503-72-6 C8H9ClN2O2S
7-bromo-9-methoxy-14-oxo-11-oxa-4-azatetracyclo[8.6.1.0^{1,12}.0^{6,17}]heptadeca-6(17),7,9,15-tetraene-4-carbaldehyde 7-bromo-9-methoxy-14-oxo-11-oxa-4-azatetracyclo[8.6.1.0^{1,12}.0^{6,17}]heptadeca-6(17),7,9,15-tetraene-4-carbaldehyde 252869-09-3 C17H16BrNO4
4-(oxetan-3-yloxy)pyridin-2-amine 4-(oxetan-3-yloxy)pyridin-2-amine 1600221-24-6 C8H10N2O2
(S)-5-AMINOMETHYL-PYRROLIDIN-2-ONE (S)-5-AMINOMETHYL-PYRROLIDIN-2-ONE 145414-31-9 C5H10N2O
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