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