Ethyl 2-amino-5-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-amino-5-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
3-Bromo-6-chloro-2-(trifluoromethoxy)pyridine-5-carboxylic acid
Ethyl 2-amino-4-nitro-5-(trifluoromethoxy)pyridine-3-carboxylate