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