4-Nitro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-carboxylic acid
2-Nitro-6-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-carboxylic acid
2-(Chloromethyl)-6-methyl-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
2-Nitro-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-4-carboxylic acid