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