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