Ethyl 3-amino-6-nitro-4-(trifluoromethoxy)pyridine-2-carboxylate
2-Amino-5-methyl-6-(trifluoromethoxy)pyridine-3-acetonitrile
Ethyl 4-amino-5-nitro-3-(trifluoromethoxy)pyridine-2-carboxylate
Ethyl 4-amino-3-nitro-2-(trifluoromethoxy)pyridine-5-carboxylate