Methyl 2-methyl-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-acetate
Methyl 3-methyl-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-acetate
Methyl 5-methyl-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-acetate
Methyl 2-methyl-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-acetate