3-Amino-6-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine
3-Amino-2-(difluoromethyl)-5-nitro-4-(trifluoromethoxy)pyridine
Methyl 5-amino-2-hydroxy-3-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 4-amino-3-hydroxy-6-(trifluoromethoxy)pyridine-2-carboxylate