Ethyl 2-amino-3-nitro-5-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 3-amino-2-iodo-4-(trifluoromethoxy)pyridine-5-carboxylate
Ethyl 2-amino-3-nitro-4-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 5-amino-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylate