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