 2-Amino-5-chloropyrazine | 2,5-Dichloropyrazine | 5-Chloro-2-hydroxypyrazine | 3,5-Dibromo-2-hydroxypyrazine |
| 2-Amino-5-chloro-3-cyanopyrazine | 2-Amino-5-bromo-3-cyanopyrazine | 2,5-Dibromo-3-chloropyrazine | 3,5-Dibromo-2-chloropyrazine |
| 2-Chloro-5-bromopyrazine | 2,5-dichloro-3-methylpyrazine | 2-Chloro-3-methylpyrazine | 2,4-Dibromopyridin-3-amine |
| 5-Bromo-2-hydroxynicotinonitrile | 2-Amino-5-nitropyridin-3-ol | 2-amino-6-bromopyridin-3-ol | 5-chloro-4-methoxypyridin-3-amine |
| 5-bromo-4-methoxypyridin-3-amine | 3-bromo-2-chloro-5-methoxypyridine | 2,3-dibromo-5-methoxypyridine | 2-bromo-3-chloro-5-methoxypyridine |
| 3-Amino-5-bromo-2-methoxypyridine | 2,3-Dichloro-5-methoxypyridine | 3-Bromo-2-methoxy-5-nitropyridine | 3-Bromo-2-hydroxy-5-nitropyridine |
| 3-Chloro-5-nitro-pyridin-2-ol | 3-Bromo-4-methoxy-5-nitropyridine | 5-Methylpyridine-3,4-diamine | 3-methyl-5-nitropyridin-4-amine |
| 4-Amino-3-methoxypyridine | 5-bromo-6-methylpyridine-2,3-diamine | 6-bromo-2-nitropyridin-3-amine | 6-Bromo-2-nitropyridin-3-ol |
| 6-bromopyridine-2,3-diamine | 3-amino-2-nitropyridine | 2-bromo-4-methoxypyridin-3-amine | 2-chloro-4-methoxypyridin-3-amine |
| 3-Amino-4,5-dichloropyridine | 3-chloro-5-methylpyridin-4-amine | 3-bromo-5-methylpyridin-4-amine | 5,6-dichloronicotinonitrile |
| 5-Methyl-3-nitropyridin-2-amine | 3-Amino-6-bromo-pyridin-2-ol | 6-bromo-2-methoxypyridin-3-amine | 4-bromo-2-chloropyridin-3-amine |
| 5-Amino-2,4-dichloropyridine | 2-BROMO-3-CHLORO-5-NITROPYRIDINE | 3-Amino-4-bromopyridine | 3-Amino-4-chloropyridine |
| 3-Amino-2-bromo-6-methylpyridine | 2-amino-4-chloro-3-hydroxypyridine | 2-Chloro-3,4-diaminopyridine | 6-Chloro-3,4-diaminepyridine |
| 4-Amino-2-chloro-3-nitropyridine | 4-Amino-2-chloro-5-nitropyridine | 2-amino-3-hydroxy-4-bromopyridine | 3,4-diamino-2-methylpyridine |
| 4-Amino-2-methyl-3-nitropyridine | 2-Amino-3,5-dibromo-4-methylpyridine | Methyl 5-cyano-2-pyridinecarboxylate | Ethyl 5-cyano-2-pyridinecarboxylate |
| 5-Cyano-2-pyridinecarboxylic acid | 3-Amino-4-hydrazinopyridine | 4-amino-3-chloropyridine | 2,3-Diamino-5-bromo-4-methylpyridine |
| 2-Amino-5-bromo-3-chloropyridine | 4-Amino-3-chloro-5-nitropyridine | 3-Amino-5-bromo-4-chloropyridine | 3-Bromo-5-nitropyridin-4-ol |
| 5-Chloro-3,4-diaminopyridine | 4-Methoxy-3-nitropyridine | 4-Hydroxy-3-nitropyridine | 3-Amino-4-methoxypyridine |
| 4-Amino-3-nitropyridine | 5-(Benzyloxy)-2-bromo-3-chloropyridine | 5-(Benzyloxy)-2,3-dichloropyridine | 4-Amino-3-bromo-5-chloropyridine |
| 4-Amino-3-bromopyridine | 4-Amino-3,5-dibromopyridine | 2-Bromo-3-chloro-5-hydroxypyridine | 2-Chloro-3-bromo-5-hydroxypyridine |
| 2-Amino-5-bromo-4-methyl-3-nitropyridine | 3-Bromo-4-chloro-5-nitropyridine | 2,3-Dichloro-5-hydroxypyridine | 5-Bromopyridine-3,4-diamine |
| 2,3-Dibromo-5-hydroxypyridine | 3-Amino-5,6-dibromopyridine | 5-Bromo-2-chloronicotinonitrile | 4-Amino-3-bromo-5-nitropyridine |
| 5-Amino-2,3-dichloropyridine | 7-Bromo-1,3-dihydroimidazo [4,5-c]pyridin-2-one | 4-Bromo-3-methyl-5-nitropyridine | 3-Methyl-5-nitropicolinonitrile |
| 5-Chloro-2-hydroxypyridine-3-carbonitrile | 3,4-dichloro-5-hydroxypyridine | 5-Bromo-4-chloropyridin-3-ol | 3-Bromo-2-chloro-6-methoxypyridine |
| 3-Hydroxy-4-methoxypyridine | 3,4-dimethoxypyridine | 6-Methoxycarbonyl-pyridine-2-carboxamide | 3-Bromo-4-chloro-5-fluoropyridine |
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