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