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