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