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