5-Methoxy-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylic acid
Ethyl 4-methoxy-5-nitro-3-(trifluoromethoxy)pyridine-2-carboxylate
4-Methoxy-5-nitro-3-(trifluoromethoxy)pyridine-2-carboxylic acid
Ethyl 4-methoxy-6-nitro-3-(trifluoromethoxy)pyridine-2-carboxylate