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