Methyl 3-amino-4-nitro-5-(trifluoromethoxy)pyridine-2-carboxylate
Methyl 2-amino-6-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-amino-5-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
3-Amino-4-nitro-5-(trifluoromethoxy)pyridine-2-acetic acid