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