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