Methyl 6-nitro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxylate
Methyl 2-nitro-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-carboxylate
3-Nitro-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-carboxylic acid
Methyl 2-nitro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-carboxylate