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