Ethyl 5-nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-carboxylate
Ethyl 4-nitro-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-carboxylate
Ethyl 4-nitro-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxylate
2-Nitro-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-acetic acid