Ethyl 4-chloro-3-(difluoromethyl)-6-nitropyridine-2-carboxylate
2-Amino-3-bromo-5-hydroxy-4-(trifluoromethoxy)pyridine
Methyl 3-(aminomethyl)-6-fluoro-4-(trifluoromethoxy)pyridine-2-acetate
4-Amino-5-(difluoromethyl)-2-methoxypyridine-3-carboxylic acid