 4-Chloro-5-benzothiazolamine | 5-Nitro-benzothiazole | Benzothiazol-5-ylamine | 5-Methyl-2-mercaptobenzothiazole |
| 6-Bromo-2-ethylbenzothiazole | 2-Ethyl-benzothiazole | 6-Bromo-2-methylbenzoxazole | 5-Amino-2-methylbenzoxazole |
| 2-Methyl-5-nitro-benzooxazole | 5-Benzoxazolecarboxylic acid | 3-Bromobenzofuran | 2,3-Dibromo-benzofuran |
| 2-Cyano-5-furancarboxylic acid | 5-Formyl-furan-2-carboxylic acid | 5-Acetyl-2-furancarbonitrile | 5-Acetyl-2-methyl-2-furancarbonitrile |
| 2-Methyl-furan-3-carboxylic acid | 2-Methyl-furan-3-carboxylic acid amide | 2-Methyl-furan-3-carbonitrile | 3,5-Dibromo-3-furancarboxylic acid |
| 2-Acetyl-3,5-dimethylfuran | 5-Nitro-furan-2-carboxylic acid | 5-Nitro-furan-2-carbaldehyde | 3-Amino-4-chlorothiophen HCl |
| 5-Bromo-4-chloro-2-thiophenecarboxylic acid | 2-Bromo-3-chloro-thiophene | 5-Bromo-3-nitrothiophene-2-carboxylic acid | 3-Nitro-thiophene-2-carboxylic acid methyl ester |
| Methyl 5-broMo-3-nitrothiophene-2-carboxylate | thiophene-3,4-diamine HCl | 2,5-Dibromo-3,4-dinitro-thiophene | 2,5-Dichloro-thiophene-3-carbaldehyde |
| 4-Bromo-5-chloro-2-thiophenecarboxylic acid | 5-cyanothiophene-2-carboxylic acid | 5-FORMYL-2-THIOPHENECARBOXYLIC ACID | 3-Amino-2-cyanothiophene |
| 3-Nitro-thiophene-2-carbonitrile | 2-Amino-thiophene-3-carboxylic acid methyl ester | 5-Bromo-4-methylthiophene-2-carboxylic acid | 2-Nitro-3-aminothiophene |
| 3-Formyl-2-nitrothiophene | 2-Bromo-3-thiophenecarboxylic acid | 3-Formyl-2-thiophenecarboxylic acid | 5-Fluorothiophene-2-carboxylic acid |
| 5-Fluoro-thiophene-2-carbonitrile | 2-Methyl-thiophene-3-carboxylic acid | 3,5-Dibromo-1-methyl-1H-[1,2,4]triazole | 3,5-Dibromo-1H-[1,2,4]triazole |
| 2-Methyl-[1,3,4]oxadiazole | 3,5-Diamino-6-bromo-1,2,4-triazine | 6-Bromo-[1,2,4]triazin-3-ylamine | 3-Methyl-1,2,4-triazine |
| 6-Amino-1,2,4-triazine-3,5(2H,4H)-dione | [1,2,4]Triazine-3,5-diol | 6-Bromo-[1,2,4]triazine-3,5-diol | 2-Amino-5-nitro-1,3,4-thiadiazole |
| Furo[3,2-b]pyridin-3(2H)-one | 3-Hydroxy-benzofuran-2-carboxylic acid ethyl ester | 4-Chlorofuro[3,2-d]pyrimidine | Furo[3,2-d]pyrimidin-4(1H)-one (9CI) |
| Furo[2,3-b]pyridine-3-carboxaldehyde | 1H-Imidazo[4,5-b]pyridine-6-carboxylic acid | 1H-Imidazo[4,5-b]pyridine-6-carboxylic acid methyl ester | 7-Bromo-1,5-dihydro-4H-imidazo[4,5-c]pyridin-4-one |
| 5-Bromo-2-chloro-pyridin-4-ylamine | 5-Bromo-2-chloro-3-nitro-pyridin-4-ylamine | 5-Bromo-2-methoxy-3-nitro-pyridin-4-ylamine | 7-Bromo-4-methoxy-1H-imidazo[4,5-c]pyridine |
| 4,6-Dichloroimidazo[4,5-c]pyridine | 1H-Imidazo[4,5-c]pyridine | 6-Chloro-2-(trifluoromethyl)purine | 2-Trifluoromethyl-7H-purin-6-ol |
| 3-Bromo-4-chloro-1H-pyrazolo[3,4-d]pyrimidine | 3-Bromo-1H-pyrazolo[3,4-d]pyrimidin-4-ol | 6-Chloro-1H-pyrazolo[3,4-d]pyrimidine | 4-Amino-3-cyanopyrazolo[3,4-d]pyrimidine |
| 5-Amino-1H-pyrazole-3,4-dicarbonitrile | 3-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine | 4-Chloro-6-(trifluoromethyl)-1H-pyrazolo[3,4-d]pyrimidine | 3-Amino-1H-pyrazole-4-carboxylic acid amide |
| 6-Trifluoromethyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol | 5-Chloro-1H-pyrazolo[4,3-b]pyridine | 7-Chloro-1H-pyrazolo[4,3-b]pyridine | 1-Pyrazolo[4,3-b]pyridin-1-yl-ethanone |
| 1H-Pyrazolo[4,3-b]pyridine | 3-Bromo-1H-pyrazolo[4,3-c]pyridine | 1-Pyrazolo[4,3-c]pyridin-1-yl-ethanone | 1H-Pyrazolo[4,3-c]pyridine |
| 7-Chloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine | 1-Methyl-1H-pyrazolo[4,3-d]pyrimidin-7-ol | Pyrido[2,3-d]pyrimidin-4(1H)-one,2,3-dihydro-2-thioxo | 4-Chloropyrido[3,2-d]pyrimidine |
| Pyrido[3,2-d]pyrimidin-4-ol | 4-Chloro-pyrido[4,3-d]pyrimidine HCl | Pyrido[4,3-d]pyrimidin-4-ol | 1,6-Dihydro-7H-pyrrolo[2,3-c]pyridin-7-one |
| 7-Methoxy-1H-pyrrolo[2,3-c]pyridine | 5-Chloro-1H-pyrrolo[2,3-c]pyridine | 2,4-Dichloro-7-iodo-5H-pyrrolo[3,2-d]pyrimidine | 1,5-Dihydro-pyrrolo[3,2-d]pyrimidine-2,4-dione |
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