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