Methyl 4-amino-2-(aminomethyl)-3-(difluoromethyl)pyridine-5-carboxylate
Methyl 4-(difluoromethyl)-2-hydroxy-3-methylpyridine-6-carboxylate
Ethyl 2-amino-3-methyl-6-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 3-(bromomethyl)-5-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylate